US4873622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid jet recording head
Assignee: Canon Inc
•
Filing: 1988-08-10
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Granted: 1989-10-10
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Expires: 2008-08-10
Abstract
Abstract A liquid jet recording head comprises a recording head unit for discharging liquid from an orifice by applying an energy to the liquid from an energy generator mounted on a substrate in order to form flying droplets, and a substrate member having an external wiring unit for supplying an electrical signal to said energy generator; wherein the electrical connection area for electrically connecting said energy generator and said external wiring unit is integrally molded by an insulative sealing material.
Inventors
- 👤 Hirokazu Komuro
- 👤 Masami Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:19
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1601; B41J2/1603; B41J2/14; B41J2/14016; B41J2/14072; B41J2/1621; B41J2/1623; B41J2/1625; B41J2/1626; B41J2/1631; B41J2/1637; B41J2/164; B41J2/1642; B41J2/1643; B41J2/1645; B41J2/1646; H; H10; H10W; H10W72/00; H10W72/01; H10W72/015; H10W72/01515; H10W72/071; H10W72/075; H10W72/50; H10W72/531; H10W72/536
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
135 words
A liquid jet recording head comprising: a recording head unit including a support having an energy generator thereon and a cover attached to said support to form therewith a liquid chamber, wherein said cover has an orifice therein opposed to said energy generator for discharging liquid in said liquid chamber as flying droplets from said orifice by operating said energy generator; a substrate member comprising a frame having an external wiring unit including at least one connector for supplying an electrical signal to said energy generator; and an electrical connection area, electrically connecting said energy generator and said external wiring unit, sealed by an insulative sealing material, wherein said recording head unit and said substrate member are molded into an integral unit by said sealing material and said connector extends externally of said integral unit.
Claim 2
Dependent Claim
135 words
A liquid jet recording head comprising: a recording head unit including a support having an energy generator thereon and a cover attached to said support to form therewith a liquid chamber, wherein said cover has an orifice therein opposed to said energy generator for discharging liquid in said liquid chamber as flying droplets from said orifice by operating said energy generator; a substrate member comprising a frame having an external wiring unit including at least one connector for supplying an electrical signal to said energy generator; and an electrical connection area, electrically connecting said energy generator and said external wiring unit, sealed by an insulative sealing material, wherein said recording head unit and said substrate member are molded into an integral unit by said sealing material and said connector extends externally of said integral unit.
Claim 3
Dependent Claim
18 words
A liquid jet recording head according to claim 1 wherein said energy generator is an electro-thermal conversion device.
Claim 4
Dependent Claim
16 words
A liquid jet recording head according to claim 1 wherein said insulative sealing material is resin.
Claim 5
Dependent Claim
18 words
A liquid jet recording head according to claim 3 wherein said resin is epoxy resin or silicone resin.
Claim 6
Dependent Claim
19 words
A liquid jet recording head according to claim 1 wherein said electrical connection is done by a wire-bonding method.
Claim 7
Dependent Claim
21 words
A liquid jet recording head according to claim 5 wherein a gold or aluminum wire is used in said wire-bonding method.
Claim 8
Dependent Claim
17 words
A liquid jet recording head according to claim 1 wherein said substrate member is a lead frame.
Claim 9
Dependent Claim
17 words
A liquid jet recording head according to claim 7 wherein said lead frame is made of metal.
Claim 10
Dependent Claim
24 words
A liquid jet recording head according to claim 1 wherein said sealing material has a plane substantially parallel to a plane of the orifice.
Claim 11
Dependent Claim
20 words
A liquid jet recording head according to claim 1 wherein said energy generator generates thermal energy for forming liquid droplets.
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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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |