Patent US3679301A successfully refreshed from Google Patents.
US3679301A
Expired / Lapsed
US
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Multicolor electrophotographic device
Assignee: Canon Inc
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Filing: 1970-05-28
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Granted: 1972-07-25
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Expires: 1990-05-28
Abstract
Abstract An electrophotographic multicolor image reproducing device comprises a rotating type color separation means having a plural number of color separation filter, a means projecting a light image to the color separation filter, a means for fixing a photosensitive member to which a separated color image from the color separation filter is projected, a rotary disc having a plural set of a charging means and a developing means, and a means for synchronizing the change of the color separation filter with the change of the set on the rotary disc and rotating discontinuously the rotary disc and the rotating type color separation means.
Inventors
- 👤 Shozo Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:50
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
An electrophotographic multicolor image reproducing device which comprises means for charging a photosensitive member uniformly, means provided with a plurality of different color separation filters for positioning one of said filters selectively at an exposure position, means for projecting an original image to the photosensitive member through a positioned color separation filter, means for developing an image formed on the photosensitive member only on one side thereof, means provided with developing means of the same number as that of the kinds of color separation filter for positioning one of the developing means selectively corresponding to the kind of the filter, through which the original image has been projected, at a developing position, and means for fixing said photosensitive member at a predetermined position until process of color reproduction is completed.
Claim 2
Dependent Claim
130 words
An electrophotographic multicolor image reproducing device which comprises means for charging a photosensitive member uniformly, means provided with a plurality of different color separation filters for positioning one of said filters selectively at an exposure position, means for projecting an original image to the photosensitive member through a positioned color separation filter, means for developing an image formed on the photosensitive member only on one side thereof, means provided with developing means of the same number as that of the kinds of color separation filter for positioning one of the developing means selectively corresponding to the kind of the filter, through which the original image has been projected, at a developing position, and means for fixing said photosensitive member at a predetermined position until process of color reproduction is completed.
Claim 3
Dependent Claim
27 words
An electrophotographic multicolor image reproducing device according to claim 1, wherein said projecting means and said developing means are disposed oppositely with respect to said photosensitive member.
Claim 4
Dependent Claim
29 words
An electrophotographic multicolor image reproducing device according to claim 1, wherein said positioning means of the developing means is provided with as many charging means as the developing means.
Claim 5
Dependent Claim
32 words
An electrophotographic multicolor image reproducing device according to claim 3, wherein said positioning means of the developing means is provided with as many means for cleaning residual developer as the developing means.
Claim 6
Dependent Claim
29 words
An electrophotographic multicolor image reproducing device according to claim 4, wherein said positioning means of the developing means is provided with as many drying means as the developing means.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |