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US 6,634,736 B2Granted
Ink-jet recording head, circuit board for ink-jet recording head, ink-jet recording head cartridge, and ink-jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsToshimori Miyakoshi, Hirokazu Komuro
Life of this patent
Estimating the term…
Abstract
A circuit board for an ink-jet recording head which ejects ink includes a plurality of electrothermal transducers for generating thermal energy which is used for ejecting ink; and a plurality of wiring electrodes for supplying electric power to the plurality of electrothermal transducers, the plurality of wiring electrodes each having a thickness of one of at least two values according to the length of each wiring electrode, whereby the resistance of the wiring electrodes are made uniform between each wiring electrode without significantly increasing the width of the wiring electrodes.
Claims44
A circuit board for an ink-jet recording head that ejects ink, the circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements,
- wherein the thickness of at least two of the plurality of wiring electrodes differs according to the lengths of the at least two wiring electrodes.
1 more element
A circuit board for an ink-jet recording head that ejects ink, the circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements, each of the plurality of wiring electrodes having a plurality of layers that are successively formed by using wiring-electrode-forming patterns, the thickness of each of the plurality of wiring electrodes differing from that of the other wiring electrodes by differing each of the wiring-electrode-forming patterns from the others.
A circuit board for an ink-jet recording head that ejects ink, the circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a wiring unit for applying electric power supplied from the outside to the plurality of energy generating elements, the wiring unit being divided into a plurality of wires each formed with a plurality of layers and provided with an electrode pad for receiving the electric power,
- wherein the resistance of the plurality of wires between the electrode pads and the energy generating elements is substantially the same for each wire.
1 more element
An ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements,
- wherein the thickness of at least two of the plurality of wiring electrodes differs according to the lengths of the at least two wiring electrodes.
2 more elements
An ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements, each of the plurality of wiring electrodes having a plurality of layers that are successively formed by using wiring-electrode-forming patterns, the thickness of each of the plurality of wiring electrodes differing from that of the other wiring electrodes by differing each of the wiring-electrode-forming patterns from the others.
1 more element
An ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a wiring unit for applying electric power supplied from the outside to the plurality of energy generating elements, the wiring unit being divided into a plurality of wires each formed with a plurality of layers and provided with an electrode pad for receiving the electric power,
- wherein the resistance of the plurality of wires between the electrode pads and the energy generating elements is substantially the same for each wire.
2 more elements
An ink-jet recording head cartridge comprising:
- an ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements;
- and
- an ink tank for receiving the ink to be supplied to the ink-jet recording head,
- wherein the thickness of at least two of the plurality of wiring electrodes differs according to the lengths of the at least two wiring electrodes.
5 more elements
An ink-jet recording head cartridge comprising:
- an ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements, each of the plurality of wiring electrodes having a plurality of layers that are successively formed by using wiring-electrode-forming patterns, the thickness of each of the plurality of wiring electrodes differing from that of the other wiring electrodes by differing each of the wiring-electrode-forming patterns from the others;
- and
- an ink tank for receiving the ink to be supplied to the ink-jet recording head.
4 more elements
An ink-jet recording head cartridge comprising:
- an ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a wiring unit for applying electric power supplied from the outside to the plurality of energy generating elements, the wiring unit being divided into a plurality of wires each formed with a plurality of layers and provided with an electrode pad for receiving the electric power;
- and
- an ink tank for receiving the ink to be supplied to the ink-jet recording head,
- wherein the resistance of the plurality of wires between the electrode pads and the energy generating elements is substantially the same for each wire.
5 more elements
An ink-jet recording apparatus comprising:
- an ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements,
- wherein the thickness of at least two of the plurality of wiring electrodes differs according to the lengths of the at least two wiring electrodes.
3 more elements
An ink-jet recording apparatus comprising:
- an ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a plurality of wiring electrodes for supplying electric power to the plurality of energy generating elements, each of the plurality of wiring electrodes having a plurality of layers that are successively formed by using wiring-electrode-forming patterns, the thickness of each of the plurality of wiring electrodes differing from that of the other wiring electrodes by differing each of the wiring-electrode-forming patterns from the others.
2 more elements
An ink-jet recording apparatus comprising:
- an ink-jet recording head for ejecting ink comprising:
- a circuit board comprising:
- a plurality of energy generating elements for generating energy used for ejecting ink;
- and
- a wiring unit for applying electric power supplied from the outside to the plurality of energy generating elements, the wiring unit being divided into a plurality of wires each formed with a plurality of layers and provided with an electrode pad for receiving the electric power,
- wherein the resistance of the plurality of wires between the electrode pads and the energy generating elements is substantially the same for each wire.
3 more elements
Dependencies are inferred from the claim text.