US5095321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid jet recording head joined by a biasing member
Assignee: Canon Inc
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Filing: 1989-10-30
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Granted: 1992-03-10
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Expires: 2009-10-30
Abstract
Abstract A liquid jet recording head comprises a first substrate provided with an energy-generating element that generates an energy for discharging a recording liquid, a second substrate joining to the first substrate, the second substrate having grooves that form passages for the recording liquid in accordance to the position of the energy-generating element at the joining and being integrated with a discharge port-forming member that forms discharge ports for the recording liquid on the front side of the grooves, and a force-endowing member that tightly fixes the first and second substrates to each other by a mechanically endowed force. The head has a high reliability and can be produced in a high productivity at a low cost with a smaller number of production steps.
Inventors
- 👤 Akio Saito
- 👤 Makiko Kimura
- 👤 Tsutomu Abe
- 👤 Hiroshi Nakagomi
- 👤 Takashi Watanabe
- 👤 Norihisa Saito
- 👤 Kunihiko Maeoka
- 👤 Kazuaki Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:10
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/045; B41J2/05; B41J2/135; B41J2/16; B41J2/1621; B41J2/1623; B41J2/14; B41J2/14016; B41J2/14024; B41J2/1601; B41J2/1604; B41J2/1632; B41J2/1634; B41J2/1637; B41J2002/14362
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
135 words
A liquid jet recording head comprising; a first substrate provided with a plurality of energy-generating elements that generate energy for discharging a recording liquid; a second substrate joined to said first substrate, said second substrate having a plurality of grooves that form passages for said recording liquid, each groove corresponding to one energy-generating element, said second substrate being integral with a discharge port-forming member, said discharge port-forming member forming discharge ports for said recording liquid at a discharge end of the grooves, each port corresponding to one groove; and a biasing member for joining said first and second substrates to each other by a mechanically biasing force, said biasing member being arranged so that a force applying portion of said biasing member is substantially disposed along a direction in which the discharge ports are arranged.
Claim 2
Dependent Claim
135 words
A liquid jet recording head comprising; a first substrate provided with a plurality of energy-generating elements that generate energy for discharging a recording liquid; a second substrate joined to said first substrate, said second substrate having a plurality of grooves that form passages for said recording liquid, each groove corresponding to one energy-generating element, said second substrate being integral with a discharge port-forming member, said discharge port-forming member forming discharge ports for said recording liquid at a discharge end of the grooves, each port corresponding to one groove; and a biasing member for joining said first and second substrates to each other by a mechanically biasing force, said biasing member being arranged so that a force applying portion of said biasing member is substantially disposed along a direction in which the discharge ports are arranged.
Claim 3
Dependent Claim
28 words
A liquid jet recording head according to claim 1, wherein said discharge port-forming member has a form of a planar member for positioning said first substrate by abutment.
Claim 4
Dependent Claim
30 words
A liquid jet recording head according to claim 1 or 2, wherein said discharge port-forming member is integral with said second substrate by simultaneous molding of a same resin material.
Claim 5
Dependent Claim
35 words
A liquid jet recording head according to claim 1 or 2, wherein said discharge port-forming member is integral with said second substrate by insert molding after said second substrate is molded from a resin material.
Claim 6
Dependent Claim
42 words
A liquid jet recording head according to claim 1, wherein an adhesive is provided only on the peripheral sides on a plurality of joining surfaces of said first and second substrates excluding the joining surface on which the discharge ports are located.
Claim 7
Dependent Claim
43 words
A liquid jet recording head according to claim 1, wherein a sealing agent is provided only on the peripheral sides on a plurality of joining surfaces of said first and second substrates excluding the joining surface on which the discharge ports are located.
Claim 8
Dependent Claim
62 words
A liquid jet recording head according to claim 5 or 6, wherein said first substrate is provided on a support, said support and said biasing member having an engagement part capable of engaging said support with said biasing member, and said biasing member having a spring member for providing a pressing force from the backside of said second substrate by the engagement.
Claim 9
Dependent Claim
35 words
A liquid jet recording head according to any one of claims 1, 2, 5, or 6, wherein said energy-generating element has a form of electro-thermal converter that generates thermal energy for discharging said recording liquid.
Claim 10
Dependent Claim
21 words
A liquid jet recording head according to claim 1, wherein said biasing member has a spring member having an M-shaped cross-section.
Claim 11
Dependent Claim
23 words
A liquid jet recording head according to claim 1, wherein said biasing member has a spring member linearly pressing an area of passages.
Claim 12
Dependent Claim
53 words
A liquid jet recording head according to claim 1, wherein the grooves are provided on said second substrate to form a plurality of passages and a common liquid chamber for storing said recording liquid to be supplied to said plurality of the passages and said second substrate is integrally formed by injection molding.
Claim 13
Dependent Claim
98 words
A liquid jet recording head comprising: a first substrate and a second substrate, said first and second substrates being joined to form passages for a recording liquid; a plurality of energy generating elements provided on one of said first and second substrates; discharge ports communicating with each of the passages; and a force-endowing member providing a force to said first and second substrates, thereby joining said first and second substrates, said force-endowing member being arranged so that a force applying portion of said force-endowing member is substantially disposed along a direction in which the discharge prots are arranged.
Claim 14
Dependent Claim
98 words
A liquid jet recording head comprising: a first substrate and a second substrate, said first and second substrates being joined to form passages for a recording liquid; a plurality of energy generating elements provided on one of said first and second substrates; discharge ports communicating with each of the passages; and a force-endowing member providing a force to said first and second substrates, thereby joining said first and second substrates, said force-endowing member being arranged so that a force applying portion of said force-endowing member is substantially disposed along a direction in which the discharge prots are arranged.
Claim 15
Dependent Claim
42 words
A liquid jet recording head according to claim 12, wherein an adhesive is provided only on the peripheral sides on a plurality of joining surfaces of said first and second substrates excluding the joining surface on which the discharge ports are located.
Claim 16
Dependent Claim
45 words
A liquid jet recording head according to claim 12, wherein a sealing agent is provided only on the peripheral sides on a plurality of joining surfaces of said first and second substrates excluding the joining surface the side on which the discharge ports are located.
Claim 17
Dependent Claim
66 words
A liquid jet recording head according to claim 12 or 14, wherein one of said first and second substrates is provided on a support, said support and said force-endowing member having an engagement part capable of engaging said support with said force-endowing member, and said force-endowing member having a spring member for providing a pressing force from the backside of the other substrate by the engagement.
Claim 18
Dependent Claim
32 words
A liquid jet recording head according to any one of claims 12, 13 or 14, wherein said plurality of energy-generating elements are electro-thermal converters for generating energy for discharging said recording liquid.
Claim 19
Dependent Claim
21 words
A liquid jet recording head according to claim 12, wherein said force-endowing member is a spring member having an M-shaped cross-section.
Claim 20
Dependent Claim
24 words
A liquid jet recording head according to claim 12, wherein said force-endowing member is a spring member linearly pressing the area of said passages.
Claim 21
Dependent Claim
86 words
A liquid jet recording head comprising: a first substrate provided with an energy-generating element for generating an energy for discharging a recording liquid; and a second substrate joined to said first substrate, said second substrate having grooves that form passages for said recording liquid at the joining and being integral with a discharge port-forming member that forms discharge ports at a discharge end of the grooves, wherein said discharge port-forming member is in the form of a planar member for positioning said first substrate by abutment.
Claim 22
Dependent Claim
86 words
A liquid jet recording head comprising: a first substrate provided with an energy-generating element for generating an energy for discharging a recording liquid; and a second substrate joined to said first substrate, said second substrate having grooves that form passages for said recording liquid at the joining and being integral with a discharge port-forming member that forms discharge ports at a discharge end of the grooves, wherein said discharge port-forming member is in the form of a planar member for positioning said first substrate by abutment.
Claim 23
Dependent Claim
28 words
A liquid jet recording head according to claim 19, wherein said discharge port-forming member is integrated with said second substrate by simultaneous molding of a same resin material.
Claim 24
Dependent Claim
33 words
A liquid jet recording head according to claim 19, wherein said discharge port-forming member is integrated with said second substrate by insert molding after said second substrate is molded from a resin material.
Claim 25
Dependent Claim
32 words
A liquid jet recording head according to any one of claims 19, 20 or 21, wherein said energy-generating element is an electro-thermal converter that generates thermal energy for discharging said recording liquid.
Claim 26
Dependent Claim
52 words
A liquid jet recording head according to claim 19, wherein the grooves are provided on said second substrate to form a plurality of passages and a common liquid chamber for storing said recording liquid to be supplied to said plurality of passages and said second substrate is integrally formed by injection molding.
Claim 27
Dependent Claim
37 words
A liquid jet recording head according to one of claims 1, 12 or 19, wherein said second substrate includes a recess forming a common liquid chamber for storing said recording liquid to be supplied to said passages.
Claim 28
Dependent Claim
28 words
A liquid jet recording head according to claim 24, wherein each energy-generating element is an electro-thermal converter element that generates a thermal energy for discharging said recording liquid.
Claim 29
Dependent Claim
18 words
A liquid jet recording head according to claim 24, wherein said second substrate is made of a resin.
Claim 30
Dependent Claim
18 words
A liquid jet recording head according to claim 25, wherein said second substrate is made of a resin.
Claim 31
Dependent Claim
158 words
An ink jet recording apparatus comprising: a recording head having a first substrate provided with a plurality of energy-generating elements that generate energy for discharging a recording liquid; a second substrate joined to said first substrate, said second substrate having a plurality of grooves that form passages for said recording liquid, each groove corresponding to one energy-generating element, said second substrate being integral with a discharge port-forming member, said discharge port-forming member forming discharge ports for said recording liquid at a discharge end of the grooves, each port corresponding to one groove; a biasing member for joining said first and second substrates to each other by a mechanically biasing force, said biasing member being arranged so that a force applying portion of said biasing member is substantially disposed along a direction in which the discharge ports are arranged; and conveying means for conveying a recording medium to be recorded by said recording liquid discharged from said recording head.
Claim 32
Dependent Claim
158 words
An ink jet recording apparatus comprising: a recording head having a first substrate provided with a plurality of energy-generating elements that generate energy for discharging a recording liquid; a second substrate joined to said first substrate, said second substrate having a plurality of grooves that form passages for said recording liquid, each groove corresponding to one energy-generating element, said second substrate being integral with a discharge port-forming member, said discharge port-forming member forming discharge ports for said recording liquid at a discharge end of the grooves, each port corresponding to one groove; a biasing member for joining said first and second substrates to each other by a mechanically biasing force, said biasing member being arranged so that a force applying portion of said biasing member is substantially disposed along a direction in which the discharge ports are arranged; and conveying means for conveying a recording medium to be recorded by said recording liquid discharged from said recording head.
Claim 33
Dependent Claim
121 words
An ink jet recording apparatus comprising: a recording head having a first substrate and a second substrate, said first and second substrates being joined to form passages for a recording liquid; a plurality of energy generating elements provided on one of said first and second substrates; discharge ports communicating with each of the passages; a force-endowing member providing a force to said first and second substrates, thereby joining said first and second substrates, said force-endowing member being arranged so that a force applying portion of said force-endowing member is substantially disposed along a direction in which the discharge ports are arranged; and conveying means for conveying a recording medium to be recorded by said recording liquid discharged from said recording head.
Claim 34
Dependent Claim
121 words
An ink jet recording apparatus comprising: a recording head having a first substrate and a second substrate, said first and second substrates being joined to form passages for a recording liquid; a plurality of energy generating elements provided on one of said first and second substrates; discharge ports communicating with each of the passages; a force-endowing member providing a force to said first and second substrates, thereby joining said first and second substrates, said force-endowing member being arranged so that a force applying portion of said force-endowing member is substantially disposed along a direction in which the discharge ports are arranged; and conveying means for conveying a recording medium to be recorded by said recording liquid discharged from said recording head.
Claim 35
Dependent Claim
109 words
An ink jet recording apparatus comprising: a recording head having a first substrate provided with an energy-generating element for generating an energy for discharging a recording liquid; a second substrate joined to said first substrate, said second substrate having grooves that form passages for said recording liquid at the joining and being integral with a discharge port-forming member that forms discharge ports at a discharge end of the grooves, wherein said discharge port-forming member is in the form of a planar member for positioning said first substrate by abutment; and conveying means for conveying a recording medium to be recorded by said recording liquid discharged from said recording head.
Claim 36
Dependent Claim
109 words
An ink jet recording apparatus comprising: a recording head having a first substrate provided with an energy-generating element for generating an energy for discharging a recording liquid; a second substrate joined to said first substrate, said second substrate having grooves that form passages for said recording liquid at the joining and being integral with a discharge port-forming member that forms discharge ports at a discharge end of the grooves, wherein said discharge port-forming member is in the form of a planar member for positioning said first substrate by abutment; and conveying means for conveying a recording medium to be recorded by said recording liquid discharged from said recording head.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |