Patent US4570167A successfully refreshed from Google Patents.
US4570167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet recording head
Assignee: Canon Inc
•
Filing: 1984-04-13
•
Granted: 1986-02-11
•
Expires: 2004-04-13
Abstract
Abstract In an ink jet head comprising an orifice provided on a substrate for discharging an ink to form flying droplets, an ink channel provided on the substrate and communicating with the orifice, energy generating elements provided on the substrate for generating energy to be applied for discharging the droplets, and an intermediate ink chamber provided on the substrate for holding the ink to be supplied to the ink channel, the ink jet recording head has positioning guides for aligning side and rear wall members constituting the intermediate ink chamber at predetermined positions on the substrate, respectively.
Inventors
- 👤 Hiroshi Sugitani
- 👤 Susumu Ito
- 👤 Junichi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:04
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14024
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
An ink jet recording head comprising: a substrate; an orifice for discharging an ink droplet therethrough; an energy generating element on said substrate for generating energy to discharge the ink droplet; an ink supply area on said substrate in communicating with said orifice for supplying ink to said energy generating element; an ink tank provided for supplying ink to said ink supply area, said ink tank being formed by wall members mounted on said substrate; and a position guide of a cured film of photosensitive resin provided on said substrate by utilizing a photoresist layer, said position guide having ridges for cooperating with said wall members to align said ink tank at a predetermined position on said substrate.
Claim 2
Dependent Claim
118 words
An ink jet recording head comprising: a substrate; an orifice for discharging an ink droplet therethrough; an energy generating element on said substrate for generating energy to discharge the ink droplet; an ink supply area on said substrate in communicating with said orifice for supplying ink to said energy generating element; an ink tank provided for supplying ink to said ink supply area, said ink tank being formed by wall members mounted on said substrate; and a position guide of a cured film of photosensitive resin provided on said substrate by utilizing a photoresist layer, said position guide having ridges for cooperating with said wall members to align said ink tank at a predetermined position on said substrate.
Claim 3
Dependent Claim
24 words
An ink jet recording head according to claim 1, wherein said position guide is integrally formed with a member defining said ink supply area.
Claim 4
Dependent Claim
27 words
An ink jet recording head according to claim 1, wherein said position guide is made of the same material as a member defining said ink supply area.
Claim 5
Dependent Claim
25 words
An ink jet recording head according to claim 1, wherein said position guide has the same height as a member defining said ink supply area.
Claim 6
Dependent Claim
27 words
An ink jet recording head according to claim 1, wherein said position guide is formed in the same step in which said ink supply area is formed.
Claim 7
Dependent Claim
21 words
An ink jet recording head according to claim 1, wherein said ink supply area and said position guide are simultaneously formed.
References Cited (Backward Citations)
US4338610A
Cited
US4334234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |