US4751549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color copying machine
Assignee: Ricoh Co Ltd
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Filing: 1986-12-19
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Granted: 1988-06-14
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Expires: 2006-12-19
Abstract
Abstract A full-color copying machine copying color originals in colors as they are. A full-color copying machine in which a photosensitive member carrying multi-colored visible images obtained based on a color original is formed into belt, and the photosensitive belt is looped over between copying process stations.
Inventors
- 👤 Yutaka Koizumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:48
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
193 words
A color copying machine comprising: a photosensitive belt movable along a path; latent image forming means for sequentially forming a plurality of adjacent partial color latent images; separate developing means for each of said partial color latent images and disposed along said path, each of said developing means including means for developing a corresponding one of said partial color latent images to form a partial color visible image; a plurality of image transfer stations, one of said stations being defined along said path for each of said partial color visible images and being positioned downstream of a corresponding one of said means for developing said partial color latent images in a moving direction of said belt; transfer printing material carrying means for sequentially moving a sheet of transfer printing material through each of said image transfer stations; and transfer printing means disposed at each of said image transfer stages for transferring one of said partial color visible images into a sheet of transfer printing material carried by said transfer printing material carrying means, whereby said partial color visible images are superimposed on said sheet of transfer printing material to form a color image.
Claim 2
Dependent Claim
193 words
A color copying machine comprising: a photosensitive belt movable along a path; latent image forming means for sequentially forming a plurality of adjacent partial color latent images; separate developing means for each of said partial color latent images and disposed along said path, each of said developing means including means for developing a corresponding one of said partial color latent images to form a partial color visible image; a plurality of image transfer stations, one of said stations being defined along said path for each of said partial color visible images and being positioned downstream of a corresponding one of said means for developing said partial color latent images in a moving direction of said belt; transfer printing material carrying means for sequentially moving a sheet of transfer printing material through each of said image transfer stations; and transfer printing means disposed at each of said image transfer stages for transferring one of said partial color visible images into a sheet of transfer printing material carried by said transfer printing material carrying means, whereby said partial color visible images are superimposed on said sheet of transfer printing material to form a color image.
Claim 3
Dependent Claim
36 words
A color copying machine as claimed in claim 1, including means for changing a loop length of the photosensitive belt between two image transfer stations placed one after another to match the size of an original.
Claim 4
Dependent Claim
38 words
A color copying machine as claimed in claim 1, including means for changing a loop length of the photosensitive belt between two image transfer stations placed one after another to match the length of the partial-color visible image.
Claim 5
Dependent Claim
71 words
A color copying machine as claimed in claim 1, wherein a loop length of said photosensitive belt between two image transfer stations placed one after another amounts to (b+l+a), b being a distance between the two partial-color visible images, l a length of the partial-color visible image and a being a length of a transport path of said transfer printing material between said two image transfer stages placed one after another.
Claim 6
Dependent Claim
40 words
A color copying machine as claimed in claim 1, wherein said image transfer stations are aligned substantially on a flat plane, and said transfer printing material carrying means carries the sheet of transfer printing material substantially on a flat plane.
Claim 7
Dependent Claim
26 words
A color copying machine as claimed in claim 5, wherein said transfer printing material carrying means comprises a transfer belt looped over a plurality of rollers.
Claim 8
Dependent Claim
31 words
A color copying machine as claimed in claim 5, wherein said path forms concavities between said transfer stations and at least one of said developing means is positioned in said concavities.
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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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |