US4014608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing apparatus for electrophotographic color copying apparatus
Assignee: Hitachi Ltd
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Filing: 1975-06-13
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Granted: 1977-03-29
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Expires: 1995-06-13
Abstract
Abstract A recording medium with electrostatic latent images thereon is developed in a developer. A pair of intermediate rollers are provided in the developer. The rollers act to temporarily remove squeezably the developer on the surface to be developed of the recording medium as the recording medium is processed in the developer.
Inventors
- 👤 Isamu Terashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:39
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
A developing apparatus for a color picture comprising a plurality of developing means each moving relative to a recording medium with electrostatic latent images thereon, each developing means being provided at the intake and the exit with rollers, means for reciprocately moving said recording medium, according to the order of the successively arranged colors to be developed, relative to said respective developing means and also for moving said recording medium in a unidirectional mode relative to said developing means corresponding to the last color to be developed; said developing means corresponding to the last color to be developed being provided therein with means for temporarily removing the degraded developer on the surface of said recording medium.
Claim 2
Dependent Claim
116 words
A developing apparatus for a color picture comprising a plurality of developing means each moving relative to a recording medium with electrostatic latent images thereon, each developing means being provided at the intake and the exit with rollers, means for reciprocately moving said recording medium, according to the order of the successively arranged colors to be developed, relative to said respective developing means and also for moving said recording medium in a unidirectional mode relative to said developing means corresponding to the last color to be developed; said developing means corresponding to the last color to be developed being provided therein with means for temporarily removing the degraded developer on the surface of said recording medium.
Claim 3
Dependent Claim
41 words
An apparatus according to claim 1, in which the relative speed of said recording medium to said developing means corresponding to the last colors to be developed is about one half those of said recording medium to said other developing means.
References Cited (Backward Citations)
US3799791A
Cited
US3808025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |