Patent US4263601A successfully refreshed from Google Patents.
US4263601A
Expired / Lapsed
US
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Image forming process
Assignee: Canon Inc
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Filing: 1978-09-25
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Granted: 1981-04-21
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Expires: 1998-09-25
Abstract
Abstract The present invention relates to an image forming process and an apparatus therefor for forming an image with liquid ink in response to output information from a facsimile or a computer, or optical information. In the present invention there is employed a screen member provided with a plurality of through holes and control electrodes respectively provided in the vicinity of said through holes, and voltages corresponding to the image information signals are applied to said control electrodes to selectively introduce electroconductive liquid ink into said through holes thereby forming an image, said image then being transferred onto or made to fly toward a recording material such as paper.
Inventors
- 👤 Yukuo Nishimura
- 👤 Masahiro Haruta
- 👤 Yasushi Takatori
- 👤 Katsuhiko Nishide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:07
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/06; B41J2002/061; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
An image forming process comprising: providing a screen member having plural through holes and provided with control electrodes in the vicinity of the respective through holes; providing a counter electrode opposite said screen member; maintaining the screen member in contact with conductive liquid ink; applying a predetermined voltage between the liquid ink and the counter electrode; and applying a voltage to the control electrodes in accordance with information signals to introduce the conductive liquid selectively into said holes thereby forming an image on said screen member.
Claim 2
Dependent Claim
86 words
An image forming process comprising: providing a screen member having plural through holes and provided with control electrodes in the vicinity of the respective through holes; providing a counter electrode opposite said screen member; maintaining the screen member in contact with conductive liquid ink; applying a predetermined voltage between the liquid ink and the counter electrode; and applying a voltage to the control electrodes in accordance with information signals to introduce the conductive liquid selectively into said holes thereby forming an image on said screen member.
Claim 3
Dependent Claim
17 words
A process according to claim 1, including arranging said electrodes in rows and controlling each row independently.
Claim 4
Dependent Claim
22 words
A process according to claim 1, including providing said screen member with an ink-repellant layer at the face thereof contacting the ink.
Claim 5
Dependent Claim
13 words
A process according to claim 1, wherein said through holes are capillary holes.
Claim 6
Dependent Claim
28 words
A process according to claim 1, including bringing said image formed on the screen member into contact with a recording medium to transfer said image to said medium.
Claim 7
Dependent Claim
25 words
A process according to claim 1, including forming said screen member of a plastic material selected from the group consisting of polyamid, polyester or polyethylene.
Claim 8
Dependent Claim
13 words
A process according to claim 3, including forming said ink-repellant layer of tetrafluoroethylene.
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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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |