Patent EP0132960A2 successfully refreshed from Google Patents.
Patent US4059353A successfully refreshed from Google Patents.
US4059353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoreceptor belt system
Assignee: Xerox Corp
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Filing: 1976-04-28
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Granted: 1977-11-22
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Expires: 1996-04-28
Abstract
Abstract A photoreceptor belt system in which the belt is drawn by vacuum against a flat surface as the belt moves around a closed path has an improved platen cloth or mesh extending over the surface for preventing the belt from contacting the surface, the open area of the mesh being between 20% and 80% of the total area of the mesh. Nylon netting having an open area equal to approximately 40% of its total area has been found to be particularly satisfactory.
Inventors
- 👤 Louis W. W. Shaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/754
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
117 words
An improved photoreceptor belt system having an endless flexible photoreceptor belt, means for mounting the belt for movement around a closed path which includes a flat run, means defining a planar surface along the run, and means for drawing the belt toward the surface as the belt moves around the closed path, wherein the improvement comprises: a mesh extending across the surface for preventing the belt from contacting the surface as the belt moves around the closed path, the open area of the mesh being approximately 40% of the total area of the mesh to minimize the rate of contamination of the mesh and consequently minimize the coefficient of friction between the photoreceptor belt and the mesh.
Claim 2
Dependent Claim
117 words
An improved photoreceptor belt system having an endless flexible photoreceptor belt, means for mounting the belt for movement around a closed path which includes a flat run, means defining a planar surface along the run, and means for drawing the belt toward the surface as the belt moves around the closed path, wherein the improvement comprises: a mesh extending across the surface for preventing the belt from contacting the surface as the belt moves around the closed path, the open area of the mesh being approximately 40% of the total area of the mesh to minimize the rate of contamination of the mesh and consequently minimize the coefficient of friction between the photoreceptor belt and the mesh.
Claim 3
Dependent Claim
17 words
An improved photoreceptor belt system as set forth in claim 1, wherein the mesh is nylon netting.
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) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |