US3843252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic copier of image transfer type
Assignee: Minolta Co Ltd
•
Filing: 1973-02-20
•
Granted: 1974-10-22
•
Expires: 1993-02-20
Abstract
Abstract A coppier includes a cassette comprising a magazine holding a roll of a photosensitive sheet and permitting the withdrawal of a required length of photosensitive sheet from its outlet, a takeup roller for securing the leader end of the photosensitive sheet and for taking up a worm portion of the sheet, a cassette case housing the magazine and the take-up roller, and the photosensitive sheet substantially forming a loop with the cassette case; a drive roller and a tension roller for supporting the loop of photosensitive sheet in the form of an effectively endless belt; and a cassette carrier removably supporting the cassette. The photosensitive sheet extending in effectively endless form is driven back and fourth for charging, exposure and image transfer to copy paper.
Inventors
- 👤 S Tanaka
- 👤 Y Enoguchi
- 👤 T Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:09
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/754
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
An electrophotographic copier of the transfer type comprising: a cassette containing a storage source of a photosensitive member defining web and winding means for winding photosensitive member withdrawn from said source, a drive roller, a tension roller longitudinally spaced from said drive roller, said photosensitive member extending from said source over said drive roller and said tension roller to said winding means to define with said cassette an endless loop, means for rotating said drive roller in opposite forward and reverse directions for reciprocating said cassette along a longitudinal path between said drive roller and said tension roller at a speed equal to the peripheral speed of of said drive roller, and means for forming an image on said photosensitive member and for transferring said image during the movement of said cassette along said path.
Claim 2
Dependent Claim
135 words
An electrophotographic copier of the transfer type comprising: a cassette containing a storage source of a photosensitive member defining web and winding means for winding photosensitive member withdrawn from said source, a drive roller, a tension roller longitudinally spaced from said drive roller, said photosensitive member extending from said source over said drive roller and said tension roller to said winding means to define with said cassette an endless loop, means for rotating said drive roller in opposite forward and reverse directions for reciprocating said cassette along a longitudinal path between said drive roller and said tension roller at a speed equal to the peripheral speed of of said drive roller, and means for forming an image on said photosensitive member and for transferring said image during the movement of said cassette along said path.
Claim 3
Dependent Claim
92 words
The copier as set forth in claim 1 including a shaft on which the tension roller is supported, a machine frame, parallel guide rails secured to said machine frame, the opposite ends of said shaft being movable in parallel along the guide rails, means for moving the shaft and tension roller, and a microswitch disposed along the path of travel of said tension roll, the moving means for the shaft being stopped when the position of the tension roller is detected by said microswitch to lock the shaft at a predetermined position.
Claim 4
Dependent Claim
72 words
The copier as set forth in claim 2 including a door providing access to the cassette, a separable section of one of the guide rails for the tension roller being fixed to said door for loading the cassette to free the front end of the tension roller shaft when the door is opened, the separated segment of the guide rail being engageable with the tension roller shaft when the door is closed.
Claim 5
Dependent Claim
69 words
The copier as set forth in claim 1, comprising a guide rail, said drive means including a drive screw, a carrier supporting the cassette, said carrier having a front end movably supported on said guide rail and the other end thereof supported on said drive screw so as to be driven at the same speed and in the same direction as the photosensitive member when the screw is driven.
Claim 6
Dependent Claim
50 words
The copier as set forth in claim 4 including a hanger supporting the cassette carrier, said carrier having a front end movably supported on the guide rail and a rear end supported on the drive screw, the front end of the carrier being engageable with and disengageable from the hanger.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |