US3848989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicolor electrophotographic reproduction device
Assignee: Canon Inc
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Filing: 1973-01-15
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Granted: 1974-11-19
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Expires: 1993-01-15
Abstract
Abstract An electrophotographic multicolor reproducing device comprises a table for supporting an object to be copied, sources of light for illuminating said object, color separation optical means for separating the image of said object into a number of colors and having exposure positions for said respective colors, electrically charging means and visualizing means both corresponding in number to said exposure positions, a photosensitive member, and means for carrying said photosensitive member along said electrically charging means, said exposure positions and said visualizing means. A detection marking means for registration may be additionally provided thereto.
Inventors
- 👤 K Yamaji
- 👤 A Kurahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:09
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/08; E02B15/085; E02B15/0814; E02B15/0857; E02B15/0864; G; G03; G03G; G03G15/00; G03G15/01; G03G15/0105; G03G15/011; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
An electrophotographic reproduction apparatus capable of continuously producing a polychromatic reproduction of a color original comprising: light means for forming a light image of the color original, a single photoconductive surface movable linearly at its exposing position, optical means for separating the color image formed by said light means into at least two color separation images, means for conducting said color separation images along different optical paths of equal length to said photoconductive surface, means for separately forming on said photoconductive surface electrostatic latent images of each of said color separation images, means for separately developing each of said color separation images with different marking material, the color of which corresponds to the separation image being developed by said marking material, and means for transferring and affixing the developed images in superimposed relationship onto a copying material, and cleaning means for said photoconductive surface for repetitive use.
Claim 2
Dependent Claim
147 words
An electrophotographic reproduction apparatus capable of continuously producing a polychromatic reproduction of a color original comprising: light means for forming a light image of the color original, a single photoconductive surface movable linearly at its exposing position, optical means for separating the color image formed by said light means into at least two color separation images, means for conducting said color separation images along different optical paths of equal length to said photoconductive surface, means for separately forming on said photoconductive surface electrostatic latent images of each of said color separation images, means for separately developing each of said color separation images with different marking material, the color of which corresponds to the separation image being developed by said marking material, and means for transferring and affixing the developed images in superimposed relationship onto a copying material, and cleaning means for said photoconductive surface for repetitive use.
References Cited (Backward Citations)
US2986466A
Cited
US3495903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |