Ink jet recording head, driving method for same and ink jet recording apparatus

Claim 2

A recording method wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the method comprising the steps of: supplying electric power to all of the heat generating elements in accordance with first data upon actuation of a power source for the recording head or before the initiation of a recording operation, so that all of the heat generating elements produce heat; selectively supplying electric power to particular heat generating elements, in accordance with recording data, to eject ink and record on the recording material; and supplying, after completion of a recording operation for recording a predetermined amount of recording data and before the initiation of another recording operation, electric power insufficient to cause ink ejection to the heat generating elements which have not been used in the recording operation, in accordance with second data.

Claim 3

A method according to claim 1, wherein the recording heat includes plural ink ejection outlets corresponding to the heat generating elements, and the ejection outlets are arranged in a line covering an entire width of a record area of the recording material so that recording on the recording material is effected line by line in accordance with the recording data.

Claim 4

A method according to claim 2, wherein the second data is provided by reversing a previous line of recording data.

Claim 5

A method according to claim 2 or 3, wherein the predetermined amount of recording data corresponds to one or more lines thereof.

Claim 6

A method according to claim 1, wherein in the step of supplying electric power to all of the heat generating elements in accordance with first data, the electric power is insufficient to eject ink.

Claim 7

A recording apparatus wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the apparatus comprising: driving means for supplying electric power to actuate the heat generating elements in accordance with data; and supply means for supplying data to said driving means, wherein said supply means supplies to said driving means first data for actuating all of the heat generating elements upon actuation of a power source for the recording head or before the initiation of a recording operation, recording data for selectively actuating particular heating elements to eject ink and record on the recording material, and second data for providing, after completion of a recording operation for recording a predetermined amount of recording data and before the initiation of another recording operation, electric power insufficient to cause ink ejection to the heat generating elements which are not used in the recording operation.

Claim 8

A recording apparatus wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the apparatus comprising: driving means for supplying electric power to actuate the heat generating elements in accordance with data; and supply means for supplying data to said driving means, wherein said supply means supplies to said driving means first data for actuating all of the heat generating elements upon actuation of a power source for the recording head or before the initiation of a recording operation, recording data for selectively actuating particular heating elements to eject ink and record on the recording material, and second data for providing, after completion of a recording operation for recording a predetermined amount of recording data and before the initiation of another recording operation, electric power insufficient to cause ink ejection to the heat generating elements which are not used in the recording operation.

Claim 9

An apparatus according to claim 6, wherein the recording head includes plural ink ejection outlets corresponding to the heat generating elements, and the ejection outlets are arranged in a line covering an entire width of a record area of the recording material so that recording on the recording material is effected line by line in accordance with the recording data.

Claim 10

An apparatus according to claim 7, wherein the second data is provided by reversing a previous line of recording data.

Claim 11

An apparatus according to claim 7 or 8, wherein the predetermined amount of recording data corresponds to one or more lines thereof.

Claim 12

An apparatus according to claim 6, wherein the electric power supplied in accordance with the first data is insufficient to eject ink.

Claim 13

A recording method wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the method comprising the steps of: providing storing means having a memory area corresponding to the plural heat generating elements for storing driving data; storing in a portion of said memory area first data for those heat generating elements by which ink is to be ejected; storing in another portion of said memory area second data for those heat generating elements by which ink is not to be ejected; simultaneously supplying electric power to the heat generating elements in accordance with the first and the second data stored in the storing means, wherein the electric power supplied in accordance with the second data is insufficient to cause ink ejection.

Claim 14

A recording method wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the method comprising the steps of: providing storing means having a memory area corresponding to the plural heat generating elements for storing driving data; storing in a portion of said memory area first data for those heat generating elements by which ink is to be ejected; storing in another portion of said memory area second data for those heat generating elements by which ink is not to be ejected; simultaneously supplying electric power to the heat generating elements in accordance with the first and the second data stored in the storing means, wherein the electric power supplied in accordance with the second data is insufficient to cause ink ejection.

Claim 15

A method according to claim 11, wherein the electric power supplied to the heat generating elements is selected in accordance with the first and the second data.

Claim 16

A method according to claim 12, wherein the heat generating elements are electrically connected with plural current limiting elements and in accordance with the first and the second data particular limiting elements are selected to control the electric power supplied to the heat generating elements.

Claim 17

A method according to claim 11, wherein the recording head includes plural ink ejection outlets corresponding to the heat generating elements, and the ejection outlets are arranged in a line covering an entire width of a recording area of the recording material, so that recording on the recording material is effected line by line in accordance with the first data.

Claim 18

A recording apparatus wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the apparatus comprising: storing means having a memory area corresponding to the plural heat generating elements for storing driving data; data generating means for supplying to said storing means, in accordance with the image to be recorded, first data for those heat generating elements by which ink is to be ejected and second data for heat generating elements by which ink is not to be ejected; and driving means for simultaneously supplying electric power to the heat generating elements in accordance with the first and the second data stored in said storing means, wherein the electric power supplied in accordance with the second data is insufficient to cause ink ejection.

Claim 19

A recording apparatus wherein an image is recorded on a recording material using a recording head including a plurality of heat generating elements, the heat generating elements being capable of causing a state change in ink to eject the ink upon the supply of sufficient electric power to the heat generating elements, the apparatus comprising: storing means having a memory area corresponding to the plural heat generating elements for storing driving data; data generating means for supplying to said storing means, in accordance with the image to be recorded, first data for those heat generating elements by which ink is to be ejected and second data for heat generating elements by which ink is not to be ejected; and driving means for simultaneously supplying electric power to the heat generating elements in accordance with the first and the second data stored in said storing means, wherein the electric power supplied in accordance with the second data is insufficient to cause ink ejection.

Claim 20

An apparatus according to claim 15, wherein said driving means includes selecting means for selecting the amount of electric power supplied to the heat generating elements in accordance with the first and the second data.

Claim 21

An apparatus according to claim 16, wherein said selecting mean includes plural current limiting elements electrically connected with the heat generating elements and selects particular limiting elements in accordance with the first and the second data to control the electric power supplied to the heat generating elements.

Claim 22

An apparatus according to claim 15, wherein the recording head includes plural ink ejection outlets corresponding to the heat generating elements, and the ejection outlets are arranged in a line covering an entire width of a record area of the recording material, so that recording on the recording material is effected line by line in accordance with the first data.