US5046828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reading out a charge latent image
Assignee: Victor Company of Japan Ltd
•
Filing: 1989-11-22
•
Granted: 1991-09-10
•
Expires: 2009-11-22
Abstract
Abstract An apparatus for reading out a charge latent image from a recording medium includes a photo-modulation member exposed to an electric field from the recording medium and exposed to reading light. The photo-modulation member varies a condition of the reading light in accordance with the electric field. A photoconductive member is disposed between the recording medium and the photo-modulation member. Control light is applied to the photoconductive member. The control light has an intensity which varies with respect to time.
Inventors
- 👤 Itsuo Takanashi
- 👤 Shintaro Nakagaki
- 👤 Hirohiko Shinonaga
- 👤 Tsutou Asakura
- 👤 Masato Furuya
- 👤 Hiromichi Tai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:22
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/135
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
An apparatus for reading out a charge latent image from a recording medium, comprising: a photo-modulation member exposed to an electric field from the recording medium and exposed to reading light, the photo-modulation member varying a condition of the reading light in accordance with the electric field; a photoconductive member disposed between the recording medium and the photo-modulation member; and means for applying control light to the photoconductive member, wherein the control light has an intensity which varies with respect to time.
Claim 2
Independent Claim
82 words
An apparatus for reading out a charge latent image from a recording medium, comprising: a photo-modulation member exposed to an electric field from the recording medium and exposed to reading light, the photo-modulation member varying a condition of the reading light in accordance with the electric field; a photoconductive member disposed between the recording medium and the photo-modulation member; and means for applying control light to the photoconductive member, wherein the control light has an intensity which varies with respect to time.
Claim 3
Independent Claim
61 words
An apparatus for reading out a charge latent image from a recording medium, comprising: a liquid-crystal member exposed to an electric field from the recording medium exposed to an electric field into optical information; and means for selectively allowing and inhibiting said exposure of the liquid-crystal member to the electric field to subject the liquid-crystal member to an alternating electric field.
Claim 4
Independent Claim
61 words
An apparatus for reading out a charge latent image from a recording medium, comprising: a liquid-crystal member exposed to an electric field from the recording medium exposed to an electric field into optical information; and means for selectively allowing and inhibiting said exposure of the liquid-crystal member to the electric field to subject the liquid-crystal member to an alternating electric field.
Claim 5
Dependent Claim
31 words
The apparatus of claim 2 wherein said means comprises a photoconductive member disposed between the recording medium and the liquid-crystal member, and means for intermittently applying light to the photoconductive member.
References Cited (Backward Citations)
US3951519A
Cited
US4392719A
Cited
US4386836A
Cited
US4804994A
Cited
US4782348A
Cited
US4945423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |