US3910232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color reproduction device
Assignee: Canon Inc
•
Filing: 1974-06-11
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Granted: 1975-10-07
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Expires: 1994-06-11
Abstract
Abstract In a color reproduction device using multi-color developing agents, the developing agents which have been mixed in the course of the development are re-used as a black color developing agent, for which purpose the device is provide with a plurality of developing with, a mixed developing agent recoverying unit, and a conveying unit for the mixed developing agents to be transported from the recovering unit to the developing unit.
Inventors
- 👤 Eiichi Kondo
- 👤 Shozo Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:46
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0105; G03G15/0121
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A device for color reproduction of an original color image wherein an electrostatic latent image formed on an electrostatic latent image carrying member is developed with multi-color developing agents, which comprise in combination: a. a plurality of developing means, at least one of said developing means containing therein a black color developing agent; b. means for recovering said multi-color developing agents which have been intermingled during the image developing process; and c. means for transferring said intermingled multi-color developing agents from said recovering means to one of said developing means containing therein the black color developing agent.
Claim 2
Independent Claim
97 words
A device for color reproduction of an original color image wherein an electrostatic latent image formed on an electrostatic latent image carrying member is developed with multi-color developing agents, which comprise in combination: a. a plurality of developing means, at least one of said developing means containing therein a black color developing agent; b. means for recovering said multi-color developing agents which have been intermingled during the image developing process; and c. means for transferring said intermingled multi-color developing agents from said recovering means to one of said developing means containing therein the black color developing agent.
Claim 3
Dependent Claim
38 words
The color reproduction device as definEd in claim 1, wherein said means for transferring the intermingled multi-color developing agents includes means to detect a transfer quantity of said intermingled developing agents, and means to control the transfer operation.
Claim 4
Dependent Claim
38 words
The color reproduction device as defined in claim 1, wherein said developing agent recovering means includes means for storing said recovered developing agents, and means to detect the color phase of said intermingled multi-color developing agents in storage.
Claim 5
Dependent Claim
42 words
The color reproduction device as defined in claim 3, wherein said developing agent storing means further includes means for feeding and mixing an additional quantity of black color developing agent in accordance with a detection signal from said color phase detecting means.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |