EP1090758A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink jet head substrate having heat generating resistor and ink jet head and recording method using same
Assignee: Canon Inc
•
Filing: 2000-10-04
•
Granted: —
•
Expires: 2020-10-04
Abstract
Abstract An ink jet recording method of ejecting ink using an ink jet head substrate provided with a heat generating resistor which is coated with a protecting film, wherein the ink is ejected by a pressure produced by generation of a bubble created by film boiling of the ink caused by application of thermal energy to the ink through the protecting film, the thermal energy being generated by driving of the heat generating resistor, the improvement residing in that: there is provided a recording mode in which the ink is ejected with a maximum temperature at the surface of the protecting film which is contacted to the ink not higher than 560°C.
Inventors
- 👤 Koromo Shirota
- 👤 Teruo Ozaki
- 👤 Masahiko Kubota
- 👤 Ryuji Katsuragi
- 👤 Hidehiko Kanda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 05:47
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/015; B41J2/04; B41J2/045; B41J2/04501; B41J2/04528; B41J2/04563; B41J2/0458; B41J2/04588; B41J2/04598; B41J2/135; B41J2/14; B41J2/14016; B41J2/14088; B41J2/14112; B41J2/14129; C; C09; C09D; C09D11/00; C09D11/30; C09D11/38; B41J2202/00; B41J2202/01; B41J2202/03; B41J2202/13
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
111 words
An ink jet recording method of ejecting ink
using an ink jet head substrate provided with a heat
generating resistor which is coated with a protecting
film, wherein the ink is ejected by a pressure
produced by generation of a bubble created by film
boiling of the ink caused by application of thermal
energy to the ink through the protecting film, the
thermal energy being generated by driving of said heat
generating resistor, the improvement residing in that: there is provided a recording mode in which
the ink is ejected with a maximum temperature at the
surface of said protecting film which is contacted to
the ink not higher than 560°C.
Claim 2
Dependent Claim
27 words
A method according to Claim 1, wherein the
maximum temperature is controlled by controlling a
pulse width of a driving signal applied to the heat
generating resistor.
Claim 3
Dependent Claim
50 words
A method according to Claim 1, wherein a
temperature of the substrate is measured, driving of
heat generating resistor is stopped when a
discrimination is made that control is not possible to
make the maximum temperature not higher than 560°C, on
the basis of the temperature and a driving signal.
Claim 4
Dependent Claim
12 words
A method according to Claim 1, wherein the
ink contains chelate agent.
Claim 5
Dependent Claim
27 words
A method according to Claim 4, wherein the
content of the chelate agent is not less than 50
weight ppm and not more than 20 weight %.
Claim 6
Dependent Claim
32 words
A method according to Claim 1, wherein said
protecting film comprises a plurality of layer, and a
layer contactable to the ink is an anti-cavitation
film made of amorphous alloy comprising Ta.
Claim 7
Dependent Claim
27 words
A method according to Claim 6, wherein the
amorphous alloy comprises one or more metal materials
selected from a group of Fe, Cr, Re, Ge and Ni.
Claim 8
Dependent Claim
39 words
A method according to Claim 7, wherein the
amorphous alloy comprises Ta, Fe, Cr and Ni, and a
content of Ta is not more than 30 weight % on the
basis of the total weight of the amorphous alloy.
Claim 9
Dependent Claim
72 words
An ink jet head substrate comprising a heat
generating resistor, a protecting film with which said
heat generating resistor is coated, wherein heat
generated by said heat generating resistor is applied
to ink through said protecting film to eject the ink,
the improvement residing in that: a maximum temperature at a surface of said
protecting film contacted to the ink is not higher
than 560°C during driving of said heat generating
resistor.
Claim 10
Dependent Claim
32 words
A substrate according to Claim 9, wherein
said protecting film comprises a plurality of layer,
and a layer contactable to the ink is an anti-cavitation
film made of amorphous alloy comprising Ta.
Claim 11
Dependent Claim
27 words
A substrate according to Claim 10, wherein
the amorphous alloy comprises one or more metal
materials selected from a group of Fe, Cr, Re, Ge and
Ni.
Claim 12
Dependent Claim
39 words
A substrate according to Claim 11, wherein
the amorphous alloy comprises Ta, Fe, Cr and Ni, and a
content of Ta is not more than 30 weight % on the
basis of the total weight of the amorphous alloy.
Claim 13
Dependent Claim
94 words
An ink jet head comprising an ink jet head
substrate including a heat generating resistor, a
protecting film with which said heat generating
resistor is coated, wherein heat generated by said
heat generating resistor is applied to ink through
said protecting film to create a bubble in the ink,
thereby to eject the ink by a pressure by the creation
of the bubble, the improvement residing in that: a maximum temperature at a surface of said
protecting film contacted to the ink is not higher
than 560°C during driving of said heat generating
resistor.
Claim 14
Dependent Claim
14 words
An ink jet head according to Claim 13,
wherein the ink contains chelate agent.
Claim 15
Dependent Claim
29 words
An ink jet head according to Claim 14,
wherein the content of the chelate agent is not less
than 50 weight ppm and not more than 20 weight %.
Claim 16
Dependent Claim
34 words
An ink jet head according to Claim 13,
wherein said protecting film comprises a plurality of
layer, and a layer contactable to the ink is an anti-cavitation
film made of amorphous alloy comprising Ta.
Claim 17
Dependent Claim
29 words
An ink jet head according to Claim 16,
wherein the amorphous alloy comprises one or more
metal materials selected from a group of Fe, Cr, Re,
Ge and Ni.
Claim 18
Dependent Claim
41 words
An ink jet head according to Claim 17,
wherein the amorphous alloy comprises Ta, Fe, Cr and
Ni, and a content of Ta is not more than 30 weight %
on the basis of the total weight of the amorphous
alloy.
Claim 19
Dependent Claim
108 words
An ink jet apparatus which includes an ink
jet head comprising an ink jet head substrate
including a heat generating resistor, a protecting
film with which said heat generating resistor is
coated, wherein heat generated by said heat generating
resistor is applied to ink through said protecting
film to create a bubble in the ink, thereby to eject
the ink by a pressure by the creation of the bubble,
the improvement residing in that: there is provided driving signal control
means for making a maximum temperature at a surface of
said protecting film contacted to the ink not higher
than 560°C during driving of said heat generating
resistor.
Claim 20
Dependent Claim
31 words
An apparatus according to Claim 19, wherein
said driving signal control means controls a pulse
width of a driving signal applied to said heat
generating resistor to control the maximum
temperature.
Claim 21
Dependent Claim
62 words
An apparatus according to Claim 19, wherein
said ink jet head substrate includes a temperature
detecting element for measuring a temperature of said
substrate, and wherein driving of heat generating
resistor is stopped when a discrimination is made that
control is not possible to make the maximum
temperature not higher than 560°C, on the basis of the
temperature and a driving signal.
Claim 22
Dependent Claim
12 words
An apparatus according to Claim 21, wherein
the ink contains chelate agent.
Claim 23
Dependent Claim
27 words
An apparatus according to Claim 22, wherein
the content of the chelate agent is not less than 50
weight ppm and not more than 20 weight %.
Claim 24
Dependent Claim
32 words
An apparatus according to Claim 21, wherein
said protecting film comprises a plurality of layer,
and a layer contactable to the ink is an anti-cavitation
film made of amorphous alloy comprising Ta.
Claim 25
Dependent Claim
27 words
An apparatus according to Claim 24, wherein
the amorphous alloy comprises one or more metal
materials selected from a group of Fe, Cr, Re, Ge and
Ni.
Claim 26
Dependent Claim
39 words
An apparatus according to Claim 25, wherein
the amorphous alloy comprises Ta, Fe, Cr and Ni, and a
content of Ta is not more than 30 weight % on the
basis of the total weight of the amorphous alloy.
Claim 27
Dependent Claim
58 words
A control device for controlling driving of an ink
ejection head for ejecting liquid from an ejection
orifice by causing a heat generating element to generate
heat to create a bubble, wherein the control device is
arranged to control the driving such that the temperature
of liquid in contact with the heat generating element
does not exceed 560°C.
References Cited (Backward Citations)
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