US4751553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reader-printer
Assignee: Canon Inc
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Filing: 1987-06-24
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Granted: 1988-06-14
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Expires: 2007-06-24
Abstract
Abstract In a reader-printer having a first optical device for directing a light from a projection lens to a screen and a second optical device for directing the light to a photosensitive medium, the first optical device includes a first mirror for reflecting the light from the projection lens, and the second optical device includes a second mirror movable toward and away from the reflection optical path of the first mirror and movable across the reflection optical path, and third mirror disposed outside the optical path of the first optical device and reflecting the light reflected by the second mirror toward the first mirror. The light reflected by the third mirror is again reflected by the first mirror and thereafter directed to a photosensitive surface.
Inventors
- 👤 Motomu Fukasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:53
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/221; G03G15/223; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/118
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
A reader-printer having first optical means for directing a light from a projection lens to a screen, and second optical means for directing the light to a photosensitive medium, said first optical means including a first mirror for reflecting the light from the projection lens, said second optical means including a second mirror movable toward and away from the reflection optical path of said first mirror and movable across said reflection optical path, and a third mirror disposed outside the optical path of said first optical means and reflecting the light reflected by said second mirror toward said first mirror, the light reflected by said third mirror being again reflected by said first mirror and thereafter directed to a photosensitive surface.
Claim 2
Dependent Claim
121 words
A reader-printer having first optical means for directing a light from a projection lens to a screen, and second optical means for directing the light to a photosensitive medium, said first optical means including a first mirror for reflecting the light from the projection lens, said second optical means including a second mirror movable toward and away from the reflection optical path of said first mirror and movable across said reflection optical path, and a third mirror disposed outside the optical path of said first optical means and reflecting the light reflected by said second mirror toward said first mirror, the light reflected by said third mirror being again reflected by said first mirror and thereafter directed to a photosensitive surface.
Claim 3
Dependent Claim
30 words
A reader-printer according to claim 1, wherein said second and third mirrors are disposed at one side of an optical path formed between said projection lens and said first mirror.
Claim 4
Dependent Claim
37 words
A reader-printer according to claim 1, wherein said second and third mirrors are disposed in opposed relationship with each other at the opposite sides of an optical path formed between said projection lens and said first mirror.
Claim 5
Dependent Claim
28 words
A reader-printer according to claim 1, wherein said second mirror has its angle of inclination varied while being moved across the reflection optical path of said first mirror.
Claim 6
Dependent Claim
44 words
A reader-printer according to claim 1, wherein said first and third mirrors are of a size capable of reflecting the effective light beam by said projection lens, and said second mirror is of a size capable of reflecting part of said effective light beam.
Claim 7
Dependent Claim
20 words
A reader-printer according to claim 1, wherein said second mirror is moved at the same speed as said photosensitive surface.
Claim 8
Dependent Claim
70 words
A reader-printer according to claim 1, wherein said first optical means includes a fourth mirror for directing the light reflected by said first mirror to said screen or said photosensitive surface, and during the reader mode, the light reflected by said first and fourth mirrors is directed to said screen, and during the printer mode, the light reflected to said first to fourth mirrors is directed to said photosensitive surface.
References Cited (Backward Citations)
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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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |