Patent US4502064A successfully refreshed from Google Patents.
US4502064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Page printer
Assignee: AVMAT COMPUTERS Ltd AN ISRAELI CORP
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Filing: 1983-09-22
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Granted: 1985-02-26
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Expires: 2003-09-22
Abstract
Abstract A page printer for selectively printing on a paper, including means for selectively charging the paper by applying radiant energy to selected portions to cause electrons to be removed from the normal bond, applying a high voltage field to prevent the removed electrons from returning to the paper, thereby charging the paper, applying and then fixing the toner to obtain the desired printout. The means for selectively applying radiant energy can be a field of light emitting diodes or scanning circuit means for selecting the LEDs of the field to be energized. The means for selectively supplying radiant energy can operate responsive to input information from a computer, memory means, or responsive to keyboard input information.
Inventors
- 👤 Ben A. Shapir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:16
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1238; G06K15/1242; G06K15/1247; B; B41; B41J; B41J2/00; B41J2/435; B41J2/447; B41J2/45; G03; G03G; G03G15/00; G03G15/04; G03G15/04036; G03G15/04045; G03G15/04054; G03G15/22; G03G15/32; G03G15/326
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A page printer for selectively printing on a paper, said page printer comprising: means for selectively charging said paper, said selective charging means comprising means for selectively applying radiant energy to selected portions of said paper to cause electrons to be removed from the normal bond, means for generally applying a high voltage field proximate to said paper to prevent the removed electrons from returning to said paper, thereby charging said paper, means responsive to said selective charges for applying toner, and means for fixing said toner to obtain the desired printout.
Claim 2
Dependent Claim
92 words
A page printer for selectively printing on a paper, said page printer comprising: means for selectively charging said paper, said selective charging means comprising means for selectively applying radiant energy to selected portions of said paper to cause electrons to be removed from the normal bond, means for generally applying a high voltage field proximate to said paper to prevent the removed electrons from returning to said paper, thereby charging said paper, means responsive to said selective charges for applying toner, and means for fixing said toner to obtain the desired printout.
Claim 3
Dependent Claim
15 words
A page printer of claim 1 wherein said paper is coated with a semi-conductor material.
Claim 4
Dependent Claim
23 words
The page printer in accordance with claim 1 wherein said means for selectively applying radiant energy is a field of light emitting diodes.
Claim 5
Dependent Claim
28 words
The page printer of claim 3 wherein said field of light emitting diodes comprises LEDs arranged in a matrix configuration wherein the dots are in a single line.
Claim 6
Dependent Claim
31 words
The page printer of in accordance with claim 3 wherein said means for selectively supplying radiant energy comprises scanning circuit means for selecting the LED's of said field to be energized.
Claim 7
Dependent Claim
22 words
The page printer of claim 1 wherein said means for selectively supplying radiant energy operate responsive to input information from a computer.
Claim 8
Dependent Claim
22 words
The page printer of claim 1 wherein said means for selectively supplying radiant energy operates responsive to input information from memory means.
Claim 9
Dependent Claim
22 words
The page printer of claim 1 wherein said means for selectively supplying radiant energy means operates responsive to key board input information.
Claim 10
Dependent Claim
30 words
The page printer in accordance with claim 4, wherein said means for selectively supplying radiant energy comprises scanning circuit means for selecting the LED's of said field to be energized.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |