Liquid jet recording head stabilization

Claim 3

A method according to claim 1, wherein said aging step is performed after construction of said ink jet recording head and before mounting said head onto an ink jet recording device.

Claim 4

A method according to claim 2, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 5

A method according to claim 1, wherein said aging step is performed in the course of preparation of said ink jet recording head after the formation of said electro-thermal energy convertor.

Claim 6

A method according to claim 1, wherein said aging step is performed after constructing said ink jet recording head and after mounting said ink jet recording head onto an ink jet recording device.

Claim 7

A method according to claim 5, wherein said aging step is performed with said ink jet recording head filled with ink

Claim 8

An ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in the course of said aging step each having a different voltage from said electrical signals applied in the course of recording; the voltage V applied in the course of said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ration V/V 0 is within a range of 1.15 to 1.25; and said aging step being limited to between about two and about fifteen minutes in duration.

Claim 9

An ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in the course of said aging step each having a different voltage from said electrical signals applied in the course of recording; the voltage V applied in the course of said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ration V/V 0 is within a range of 1.15 to 1.25; and said aging step being limited to between about two and about fifteen minutes in duration.

Claim 10

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage from said electrical signals applied in the course of recording; the voltage V applied in the course of said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ration V/V 0 is within a range of 1.15 to 1.25; and a relative movement means for effecting relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 11

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage from said electrical signals applied in the course of recording; the voltage V applied in the course of said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ration V/V 0 is within a range of 1.15 to 1.25; and a relative movement means for effecting relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 12

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage from said electrical signals applied in the course of recording; the voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ratio V/V 0 is within a range of 1.15 to 1.15; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 13

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage from said electrical signals applied in the course of recording; the voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ratio V/V 0 is within a range of 1.15 to 1.15; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 16

A method according to claim 10, wherein said aging step is performed after construction of said ink jet recording head and before mounting said heat onto an ink jet recording device.

Claim 17

A method according to claim 11, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 18

A method according to claim 10, wherein said aging step is performed in the course of preparation of said ink jet recording head after the formation of said electro-thermal energy convertor.

Claim 19

A method according to claim 10, wherein said aging step is performed after constructing said ink jet recording head and after mounting of said ink jet recording head onto an ink jet recording device.

Claim 20

A method according to claim 14, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 21

An ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a pulse width P so as to heat said heat-generating resistor and stabilize the resistance value of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different pulse width from said electrical signals applied in the course of recording; the pulse width P applied in said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and said aging step being limited to between about two and about fifteen minutes in duration.

Claim 22

An ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a pulse width P so as to heat said heat-generating resistor and stabilize the resistance value of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different pulse width from said electrical signals applied in the course of recording; the pulse width P applied in said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and said aging step being limited to between about two and about fifteen minutes in duration.

Claim 23

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different pulse width from said electrical signals applied in the course of recording; said pulse width P applied in said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and a relative movement means for effecting relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 24

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different pulse width from said electrical signals applied in the course of recording; said pulse width P applied in said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and a relative movement means for effecting relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 25

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different pulse width from said electrical signals applied in the course of recording; said pulse width P applied in said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 26

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different pulse width from said electrical signals applied in the course of recording; said pulse width P applied in said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 29

A method according to claim 19, wherein said aging step is performed after construction of said ink jet recording head and before mounting said head onto an ink jet recording device.

Claim 30

A method according to claim 20, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 31

A method according to claim 19, wherein said aging step is performed in the course of preparation of said ink jet recording head after the formation of said electro-thermal energy convertor.

Claim 32

A method according to claim 19, wherein said aging step is performed after constructing said ink jet recording head and after mounting said ink jet recording head onto an ink jet recording device.

Claim 33

A method according to claim 23, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 34

A method for preparing an ink jet recording head as in claim 19 wherein said aging step is limited to between about two and about fifteen minutes in duration.

Claim 35

An ink jet recording head which records a plurality of electrical signals applied in a course of recording comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage and a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V and a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage and a different pulse width from said electrical signals applied in the course of recording; the voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ratio V/V 0 is within a range of 1.15 to 1.25 and the pulse width P applied in the course of said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55.

Claim 36

An ink jet recording head which records a plurality of electrical signals applied in a course of recording comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage and a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V and a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage and a different pulse width from said electrical signals applied in the course of recording; the voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ratio V/V 0 is within a range of 1.15 to 1.25 and the pulse width P applied in the course of said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55.

Claim 37

An ink jet recording head as in claim 26, wherein said electrical signals applied in said aging step are applied for between about two and about fifteen minutes.

Claim 38

An ink jet recording device which records using a plurality of electrical signals applied in a course of recording having an ink jet recording head comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage and a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V and a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage and a different pulse width from said electrical signal applied in the course of recording; the voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ration V/V 0 is within a range of 1.15 to 1.25 and the pulse width P applied in the course of said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; limiting said aging step to between about two and about fifteen minutes in duration; and a relative movement means for effecting relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 39

An ink jet recording device which records using a plurality of electrical signals applied in a course of recording having an ink jet recording head comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage and a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V and a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage and a different pulse width from said electrical signal applied in the course of recording; the voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ration V/V 0 is within a range of 1.15 to 1.25 and the pulse width P applied in the course of said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; limiting said aging step to between about two and about fifteen minutes in duration; and a relative movement means for effecting relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 40

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, and comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage and a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V and a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage and a different pulse width from said electrical signals applied in the course of recording; said voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ratio V/V 0 is within a range of 1.15 to 1.25 and the pulse width P applied in the course of said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 41

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, and comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals each having a voltage and a pulse width to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals each having a voltage V and a pulse width P so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step each having a different voltage and a different pulse width from said electrical signals applied in the course of recording; said voltage V applied in said aging step being selected in relation with a foaming initiating voltage V 0 so that a K-value representing a ratio V/V 0 is within a range of 1.15 to 1.25 and the pulse width P applied in the course of said aging step being selected in relation with a foaming initiating pulse width P 0 so that a P-value representing a ratio P/P 0 is within a range of 1.30 to 1.55; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 44

A method according to claim 30, wherein said aging step is performed after construction of said ink jet recording head and before mounting of said head onto an ink jet recording device.

Claim 45

A method according to claim 31, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 46

A method according to claim 30, wherein said aging step is performed in the course of preparation of said ink jet recording head after the formation of said electro-thermal energy convertor.

Claim 47

A method according to claim 30, wherein said aging step is performed after constructing said ink jet recording head and after mounting said ink jet recording head onto an ink jet recording device.

Claim 48

A method according to claim 34, wherein said aging step is performed with said ink jet recording head filled with ink.

Claim 49

An ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step being different from said electrical signals applied in the course of recording and each said aging electrical signal having a direct current of at least 30 mA; and said aging step being limited to between about two and about fifteen minutes in duration.

Claim 50

An ink jet recording head which records using a plurality of electrical signals applied in a course of recording, comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step being different from said electrical signals applied in the course of recording and each said aging electrical signal having a direct current of at least 30 mA; and said aging step being limited to between about two and about fifteen minutes in duration.

Claim 51

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, and comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step being different from said electrical signals applied in the course of recording and each said aging electrical signal having a direct current of at least 30 mA; and a relative movement means for effective relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 52

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording, and comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor through heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step being different from said electrical signals applied in the course of recording and each said aging electrical signal having a direct current of at least 30 mA; and a relative movement means for effective relative movement between said recording head and a receiving material, the receiving material being capable of receiving said ink discharged from said recording head for forming a predetermined image.

Claim 53

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor though heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step being different from said electrical signals applied in the course of recording and each said aging electrical signal having a direct current of at least 30 mA; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.

Claim 54

An ink jet recording device having an ink jet recording head which records using a plurality of electrical signals applied in a course of recording comprising: an opening formed in a surface; an ink pathway communicating with said opening; an electro-thermal energy convertor provided at a portion of said ink pathway and further comprising; a heat-generating resistor for generating heat energy for discharging an ink by an application of said electrical signals; a pair of electrodes for applying said electrical signals to said heat-generating resistor; said heat-generating resistor being prepared by aging said heat-generating resistor by applying sufficient aging electrical signals so as to heat said heat-generating resistor and stabilize a resistance value of said heat-generating resistor though heat treatment of said heat-generating resistor; said aging electrical signals applied in said aging step being different from said electrical signals applied in the course of recording and each said aging electrical signal having a direct current of at least 30 mA; and a capping means provided so that said capping means can be positioned contacting or away from said surface in which an opening of said recording head is formed.