EP0380366A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Substrate for recording head and recording head
Assignee: Canon Inc
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Filing: 1990-01-26
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Granted: —
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Expires: 2010-01-26
Abstract
Abstract An electricity-heat converter can be provided by a substrate (11) for recording head, a recording head and a recording device equipped with an electricity-heat converter capable of generating heat energy for discharging liquid by causing the state change of liquid for recording by heat to occur and a wiring (6, 7, 8) which is sandwiched on both sides between insulating layers (9) comprising an organic material and connected electrically to said electricity-heat converter through at least one contact portion formed at said insulating layer (9).
Inventors
- 👤 Hideo Canon Tamagawaryo Tamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 05:44
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14088; B41J2/14112; B41J2/14129; B41J2/16; B41J2/1601; B41J2/1603; B41J2/1604; B41J2/1621; B41J2/1623; B41J2/1631; B41J2/164; B41J2/1643; B41J2/1646
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
59 words
A substrate for a recording head, said substrate comprising: an electricity-heat converter capable of generating heat for discharging recording liquid by causing a change of state in said liquid; and wiring sandwiched on both its sides by insulating material, which wiring is electrically connected to said electricity-heat converter by at least one contact portion formed in said insulating material.
Claim 2
Dependent Claim
59 words
A substrate for a recording head, said substrate comprising: an electricity-heat converter capable of generating heat for discharging recording liquid by causing a change of state in said liquid; and wiring sandwiched on both its sides by insulating material, which wiring is electrically connected to said electricity-heat converter by at least one contact portion formed in said insulating material.
Claim 3
Dependent Claim
27 words
A substrate as claimed in claim 1 wherein said iring comprises a layer of first electroconductive material, which layer is sandwiched between layers of second electroconductive material.
Claim 4
Dependent Claim
25 words
A substrate as claimed in claim 2 wherein said second electroconductive material exhibits a better adhesion, than said first electroconductive material, to said insulating material.
Claim 5
Dependent Claim
27 words
A substrate as claimed in either one of claims 2 or 3 wherein said first electroconductive material is of lower electrical resistivity than said second electroconductive material.
Claim 6
Dependent Claim
26 words
A substrate as claimed in any one of claims 2 to 4 wherein said second electroconductive material is of titanium (Ti) or chromium (Cr) or both.
Claim 7
Dependent Claim
36 words
A substrate as claimed in any one of claims 2 to 5 wherein said first electroconductive material is of any one of the materials: copper (Cu) nickel (Ni), gold (Au), tin (Sn) or any combination thereof.
Claim 8
Dependent Claim
19 words
A substrate as claimed in any one of the preceding claims wherein said insulating material comprises an organic material.
Claim 9
Dependent Claim
14 words
A substrate as claimed in claim 7 wherein said organic material is of polyimide.
Claim 10
Dependent Claim
24 words
A substrate as claimed in any one of the preceding claims wherein said insulating material is formed from a layer of light sensitive material.
Claim 11
Dependent Claim
31 words
A substrate as claimed in any one of the preceding claims wherein said wiring has a width and/or a layer thickness greater than that of an electrode of said electricity-heat converter.
Claim 12
Dependent Claim
27 words
A substrate as claimed in any one of the preceding claims wherein said electricity-heat converter comprises a heat-generating resistance layer and a pair of electrodes connected thereto.
Claim 13
Dependent Claim
21 words
A substrate as claimed in claim 11 wherein said wiring is provided on at least one of said pair of electrodes.
Claim 14
Dependent Claim
29 words
A substrate as claimed in any one of the preceding claims wherein said electricity-heat converter is provided in plural number at a density of at least eight per millimetre.
Claim 15
Dependent Claim
51 words
A recording head including a substrate as claimed in any one of the preceding claims, said recording head further comprising: a liquid discharging portion having a discharging port for discharging liquid, which portion is arranged relative to said substrate so that said change of state of said liquid shall occur therein.
Claim 16
Dependent Claim
32 words
A recording head as claimed in claim 14, wherein said liquid discharging portion has a plurality of discharging ports, which ports are included at a density of at least eight per millimetre.
Claim 17
Dependent Claim
26 words
A recording head according to claim 14, wherein said liquid discharge portion comprises a wall portion for sectionalizing said discharge port and heat energy acting portion.
Claim 18
Dependent Claim
25 words
A recording head according to claim 14, wherein said liquid discharge portion comprises a member for sectionalizing said discharge port and heat energy action portion.
Claim 19
Dependent Claim
22 words
A recording head according to claim 14, wherein liquid may be discharged substantially parallel to a heat-generating surface of said electricity-heat converter.
Claim 20
Dependent Claim
24 words
A recording head according to claim 14, wherein said liquid discharging portion is bonded to said substrate to form a space for supplying liquid.
Claim 21
Dependent Claim
27 words
A recording head according to claim 19, wherein said contact portion is provided within the space formed by bonding of said liquid discharging portion and said substrate.
Claim 22
Dependent Claim
14 words
A recording head according to claim 14, wherein said recording head is full-line type.
Claim 23
Dependent Claim
17 words
A recording head according to claim 14, wherein said recording head has a liquid vessel integral therewith.
Claim 24
Dependent Claim
19 words
A recording head according to claim 14, wherein said liquid discharging portion includes a member having said discharging port.
Claim 25
Dependent Claim
49 words
A recording device having recording means including at least one recording head as claimed in any one of the preceding claims 14 to 23, said device further comprising: a signal supplying means for supplying recording signals to said electricity-heat converter; and a conveying means for conveying a recording medium.
Claim 26
Dependent Claim
25 words
A recording device according to claim 24, wherein said recording means has a liquid vessel integrally equipped therewith, and is mounted detachably onto a carriage.
Claim 27
Dependent Claim
21 words
A recording device according to claim 24, wherein said recording means comprises an ink jet recording head of the on-demand type.
Claim 28
Dependent Claim
16 words
A recording device according to claim 24, wherein said signal supplying means is an electrical circuit.
Claim 29
Dependent Claim
17 words
A recording device according to claim 24, wherein said conveying means includes a platen and a roller.
Claim 30
Dependent Claim
57 words
A recording head comprising a substrate including an integrated heating element with electrodes; wiring means which is insulated and is integrated with said heating element making electrical contact with said electrodes; and a discharge chamber having a port for discharging recording ink, which chamber contains said heating element and at least a portion of said wiring means.
Claim 31
Dependent Claim
57 words
A recording head comprising a substrate including an integrated heating element with electrodes; wiring means which is insulated and is integrated with said heating element making electrical contact with said electrodes; and a discharge chamber having a port for discharging recording ink, which chamber contains said heating element and at least a portion of said wiring means.
Claim 32
Dependent Claim
72 words
A substrate, for use in a recording head as claimed in claim 29, comprising: an integrated heating element having electrodes; and wiring means, which is insulated and integrated with said heating element maaking electrical contact with said electrodes, wherein at least one of said electrodes is foreshortened so that said heating element and at least a portion of said wiring means shall be contained within a discharge chamber of said recording head.
References Cited (Backward Citations)
No citation records indexed.
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