US3973953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging method including exposure of photoconductive imaging member through lenticular lens element
Assignee: Xerox Corp
•
Filing: 1973-12-28
•
Granted: 1976-08-10
•
Expires: 1993-12-28
Abstract
Abstract A method is set forth for extending the dynamic range of imagewise exposure systems by transmitting the electromagnetic radiation image through two angularly displaced cylindrical lens arrays and then to a photosensitive surface so that the image at the photosensitive surface is imperfect.
Inventors
- 👤 Anthony J. Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:38
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G15/04027; Y; Y10; Y10S; Y10S430/00; Y10S430/147
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A method for extending the dynamic range of an imagewise exposure system comprising the steps of: a. providing a photosensitive member; and b. imagewise exposing said photosensitive member to activating electromagnetic radiation through a lenticular lens element out of focus with said photosensitive member, said lenticular element comprising two angularly displaced layers of cylindrical lens arrays and providing on said photosensitive member during said imagewise exposure a soft dot pattern wherein about 75% of the photosensitive member area under each lenticule receives shadow information at a density of about 25% of the highlight information density received by the central about 25% of the photosensitive imaging member area under each lenticule.
Claim 2
Independent Claim
110 words
A method for extending the dynamic range of an imagewise exposure system comprising the steps of: a. providing a photosensitive member; and b. imagewise exposing said photosensitive member to activating electromagnetic radiation through a lenticular lens element out of focus with said photosensitive member, said lenticular element comprising two angularly displaced layers of cylindrical lens arrays and providing on said photosensitive member during said imagewise exposure a soft dot pattern wherein about 75% of the photosensitive member area under each lenticule receives shadow information at a density of about 25% of the highlight information density received by the central about 25% of the photosensitive imaging member area under each lenticule.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein said lens arrays are cylindrical.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein said angular displacement is in the range between above 0° and about 90°.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein said lenticular element is out of contact with said imaging member.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein said photosensitive imaging member is a xerographic photoreceptor.
Claim 7
Dependent Claim
13 words
The method of claim 1 wherein said photosensitive imaging member is also deformable.
Claim 8
Dependent Claim
16 words
The method of claim 1 wherein said photosensitive imaging member is a silver halide photographic film.
Claim 9
Dependent Claim
14 words
The method of claim 4 wherein said photosensitive imaging member is a xerographic photoreceptor.
References Cited (Backward Citations)
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US3764311A
Cited
US3543291A
Cited
US3542556A
Cited
US3663221A
Cited
US3817748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |