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US 6,474,789 B1Granted
Recording apparatus, recording head and substrate therefor
AssigneeCanon Kabushiki Kaisha
InventorsHiroyuki Ishinaga, Masahiko Ogawa, Masami Ikeda, Asao Saito, Hideo Saikawa, Akihiro Yamanaka, Kimiyuki Hayasaki, Teruo Ozaki, Shuichi Murakami, Hiroto Matsuda
Life of this patent
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Abstract
A substrate having plural recording elements and electrical leads for supplying electric signals to the recording elements includes electrical contacts for external electrical connection for reception of image signals used for driving the recording elements; and a processing circuit for converting signals which are serially supplied to the connecting contact to parallel signals to be applied to the recording elements.
Claims36
An ink jet recording head comprising:
- a plurality of groups of recording elements each of which is capable of generating heat to eject ink, the groups of the recording elements corresponding to respective kinds of the ink and being disposed with a space from an adjacent group;
- a semiconductor substrate having a built-in integrated circuit for driving the recording elements;
- a plurality of groups of ejection outlets, disposed on said semiconductor substrate, the groups of the ejection outlets being spaced from an adjacent group, corresponding to the kinds of the ink and to the groups of the recording elements;
- wherein the integrated circuit on said substrate receives image data for the groups of the recording elements corresponding to respective kinds of ink, in which image data are serially arranged, and outputs the data as parallel signals to the respective groups of the recording elements.
1 more element
A semiconductor substrate for a recording head, comprising:
- a plurality of recording elements for reflecting recording;
- function elements arranged for selectively driving heat generating resistor elements electrically connected with respective ones of said recording elements;
- an integrated circuit connected to receive serial image data and to output such data to said function elements as parallel signals;
- wherein said recording elements, function elements and integrated circuit are built into said substrate;
- a signal input portion arranged to receive serial image data from outside said substrate and to output such data to said integrated circuit;
- and
- a signal output portion connected to output the serial image data from said integrated circuit to a location outside said substrate.
4 more elements
An ink jet recording head comprising:
- an array of semiconductor substrates for a recording head, which includes;
- a plurality of recording elements for reflecting recording;
- function elements arranged for selectively driving heat generating resistor elements electrically connected with respective ones of said recording elements;
- an integrated circuit connected to receive serial image data and to output such data to said function elements as parallel signals;
- wherein said recording elements, function elements and integrated circuit are built into said substrate;
- wherein said integrated circuit is constructed and arranged to output serial image data received thereby to said function elements as parallel signals and to output serially the image data to an adjacent ones of said semiconductor substrates;
- a signal input portion arranged to receive serial image data from outside said semiconductor substrate and to output such data to said integrated circuit;
- and
- a signal output portion connected to output the serial image data from said integrated circuit to a location outside said integrated circuit.
6 more elements
A substrate, comprising:
- a plurality of recording elements in the form of liquid ejection energy generating means which are integrally built into said substrate;
- a plurality of electrical leads, electrically connected to said recording elements, and connected in a circuit for supplying electric signals to said recording elements;
- an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are used for driving said recording elements:
- a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
- a logic circuit, integrally built into said substrate, and having a circuit, connected to said electrical contact, for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit, electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
- a first common lead electrically connected to said liquid ejection energy generating means to supply a driving voltage to said recording elements;
- and
- a second common lead electrically connected to said selector elements to electrically ground said selector elements;
- said liquid ejection energy generating means being disposed at an edge portion of said substrate closer to a position to which the ink is supplied.
6 more elements
A substrate, comprising:
- a plurality of recording elements in the form of liquid ejection energy generating means which are integrally built into said substrate;
- a plurality of electrical leads, electrically connected to said recording elements, and connected in a circuit for supplying electric signals to said recording elements;
- an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are used for driving said recording elements;
- a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
- a logic circuit, integrally built into said substrate, and having a circuit, connected to said electrical contact, for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit, electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
- a first common lead electrically connected to said liquid ejection energy generating means to supply a driving voltage to said recording elements;
- and
- a second common lead electrically connected to said selector elements to electrically ground said selector elements;
- said liquid ejection energy generating means being disposed at a position closer to one end portion of said substrate than said first common lead.
6 more elements
Dependencies are inferred from the claim text.