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US4857965A
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Reader-printer having an image rotation device
Assignee: Minolta Co Ltd
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Filing: 1987-07-01
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Granted: 1989-08-15
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Expires: 2007-07-01
Abstract
Abstract Disclosed is a reader printer having an image rotation prism for adapting the direction of a microfilm image to suitable direction. The reader-printer has an image direction detecting means for forming the microfilm image successfully onto a copy paper without consideration of the direction of the image. The reader-printer also has a prism orientation detecting means for automatically eliminating difference between a location of the image and a location of the fed paper.
Inventors
- 👤 Kenjiro Ishii
- 👤 Yutaka Satoh
- 👤 Fumio Fukumoto
- 👤 Hajime Otsuki
- 👤 Yasuhide Kokura
- 👤 Shuichi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:35
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/118; G03G; G03G15/00; G03G15/22; G03G15/221; G03G15/223
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A reader-printer comprising: projection means for projecting an image of a microfilm to a screen and onto a photosensitive medium; copy forming means for forming the image projected onto the photosensitive medium into copies; feed means for feeding copy papers toward the photosensitive medium; an image rotation prism disposed in a light path of said projection means and having aberration between light axes incident thereto and emitted therefrom; and elimination means for eliminating a difference between a location of the projected image and a location of the fed paper so as to form the image coincidentally onto the copy paper irrespective of aberration of the light axes.
Claim 2
Dependent Claim
107 words
A reader-printer comprising: projection means for projecting an image of a microfilm to a screen and onto a photosensitive medium; copy forming means for forming the image projected onto the photosensitive medium into copies; feed means for feeding copy papers toward the photosensitive medium; an image rotation prism disposed in a light path of said projection means and having aberration between light axes incident thereto and emitted therefrom; and elimination means for eliminating a difference between a location of the projected image and a location of the fed paper so as to form the image coincidentally onto the copy paper irrespective of aberration of the light axes.
Claim 3
Dependent Claim
12 words
A reader-printer of claim 1, wherein said prism has a trapezoidal shape.
Claim 4
Dependent Claim
14 words
A reader-printer of claim 1, wherein said prism is disposed adjacent a projection lens.
Claim 5
Dependent Claim
133 words
A reader-printer with a reader mode and print mode comprising: projection means for projecting an image of a microfilm to a screen and onto a photosensitive medium; copy forming means for forming the image projected onto the photosensitive medium; feed means for feeding copy papers toward the photosensitive medium; an image rotation means disposed in a light path of said projection means for optically rotating the image; drive means for driving siad image rotation means; discrimination means for detecting whether or not the orientation of the projected image agrees with the orientation of the fed paper; and control means, in response to disagreement detected by said discrimination means, for controlling said drive means so as to be driven at the time of a mode change from the reader mode to the print mode.
Claim 6
Dependent Claim
133 words
A reader-printer with a reader mode and print mode comprising: projection means for projecting an image of a microfilm to a screen and onto a photosensitive medium; copy forming means for forming the image projected onto the photosensitive medium; feed means for feeding copy papers toward the photosensitive medium; an image rotation means disposed in a light path of said projection means for optically rotating the image; drive means for driving siad image rotation means; discrimination means for detecting whether or not the orientation of the projected image agrees with the orientation of the fed paper; and control means, in response to disagreement detected by said discrimination means, for controlling said drive means so as to be driven at the time of a mode change from the reader mode to the print mode.
Claim 7
Dependent Claim
21 words
A reader-printer of claim 4, wherein said discrimination means includes a detection means for detecting the orientation of the projected image.
Claim 8
Dependent Claim
23 words
A reader-printer of claim 4, wherein said control means controls the drive means so as to rotate the projected image through right angles.
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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) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |