US4761670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color image reproduction device
Assignee: Sharp Corp
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Filing: 1987-08-21
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Granted: 1988-08-02
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Expires: 2007-08-21
Abstract
Abstract A color image reproduction device such as a color copier includes a single light source surrounded by a cylindrical unistructural filter with red, green and blue sections such that red, green and blue beams of light are sequentially transmitted to a colored document as the filter is rotated around the source. Reflected color beams are sequentially made incident on a photosensitive film coated with yellow, magenta and cyanic ink particles which harden by exposure to red, green and blue beams of light, respectively, such that a colored image can be formed by a single scan of the document.
Inventors
- 👤 Hironori Tanaka
- 👤 Matahira Kotani
- 👤 Masafumi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:01
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B2227/00; G03B2227/32; G03B2227/325
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
A color image reproduction device comprising an exposure means for exposing a colored document sequentially with red, green and blue beams of light, a photosensitive film having an ink layer containing ink particles of a plurality of color types, each of said color types reacting with incident light thereon according to the color or wavelength characteristic of said incident light to form colored image on said film, imaging means for receiving light reflected from said document and forming an image thereof on said photosensitive film, transferring-fixing means for transferring image data formed on said film onto a recording sheet and fixing said transferred image data on said recording sheet, and separating means for separating said recording sheet and said photosensitive film after said image data are transferred onto and fixed on said recording sheet.
Claim 2
Dependent Claim
134 words
A color image reproduction device comprising an exposure means for exposing a colored document sequentially with red, green and blue beams of light, a photosensitive film having an ink layer containing ink particles of a plurality of color types, each of said color types reacting with incident light thereon according to the color or wavelength characteristic of said incident light to form colored image on said film, imaging means for receiving light reflected from said document and forming an image thereof on said photosensitive film, transferring-fixing means for transferring image data formed on said film onto a recording sheet and fixing said transferred image data on said recording sheet, and separating means for separating said recording sheet and said photosensitive film after said image data are transferred onto and fixed on said recording sheet.
Claim 3
Dependent Claim
44 words
The device of claim 1 wherein said exposure means includes a light source, screening means disposed coveringly around said light source and having an opening on its periphery, and a filter means with red, green and blue sections rotatably supported around said screening means.
Claim 4
Dependent Claim
40 words
The device of claim 2 wherein said opening is adapted to define a light path to said document and said filter means is cylindrical and adapted to cause red, green and blue beams of light sequentially transmitted to said document.
Claim 5
Dependent Claim
21 words
The device of claim 2 wherein the areas of said red, green and blue sections are differentiated according to optical characteristics.
Claim 6
Dependent Claim
35 words
The device of claim 1 wherein said transferringfixing means include a rotatable drum for advancing said photosensitive film on its cylindrical surface and a fixing roller for pressing said photosensitive film against said recording sheet.
Claim 7
Dependent Claim
30 words
The device of claim 5 wherein said drum is adapted to be rotated and said document is adapted to be advanced in synchronism with the rotation of said filter means.
Claim 8
Dependent Claim
17 words
The device of claim 1 further comprising a photodetector for detecting the revolution of said filter means.
Claim 9
Dependent Claim
15 words
The device of claim 1 wherein said ink particles include yellow, magenta and cyanic particles.
Claim 10
Dependent Claim
22 words
The device of claim 1 wherein said ink particles are hardenable selectively by exposure to red, green and blue beams of light.
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) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |