US3743274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for copying machine
Assignee: Canon Inc
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Filing: 1971-04-15
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Granted: 1973-07-03
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Expires: 1991-04-15
Abstract
Abstract The present invention relates to a drive mechanism for a copying machine provided with a reciprocating feed board which comprises a continuous drive mechanism and an intermittent drive mechanism which is only driven during the copying operation and means for interlocking both drive mechanisms for preventing the occurrence of an error in paper and original feed speed between these drive mechanisms.
Inventors
- 👤 S Komori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:11
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6235; G03G; G03G15/00; G03G15/22; G03G15/28; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19014
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A drive mechanism for a copying machine having a reciprocating feed board for carrying an original to be copied, said mechanism comprising a continuous paper drive mechanism, an intermittent drive mechanism, a one way clutch having a first assembly for driving said continuous paper drive mechanism, first motor means for driving said first assembly, said clutch having a second assembly for driving said intermittent drive mechanism, second motor means for driving said second assembly, said first assembly being driveable by said first motor means independently of said second assembly, and said first assembly receiving driving power from said second assembly when the rotational speed of said second assembly in a selected direction exceeds the rotational speed of said first assembly in the same direction to drive said continuous paper drive mechanism and said intermittent drive mechanism at synchronous speed by said two motor means.
Claim 2
Dependent Claim
144 words
A drive mechanism for a copying machine having a reciprocating feed board for carrying an original to be copied, said mechanism comprising a continuous paper drive mechanism, an intermittent drive mechanism, a one way clutch having a first assembly for driving said continuous paper drive mechanism, first motor means for driving said first assembly, said clutch having a second assembly for driving said intermittent drive mechanism, second motor means for driving said second assembly, said first assembly being driveable by said first motor means independently of said second assembly, and said first assembly receiving driving power from said second assembly when the rotational speed of said second assembly in a selected direction exceeds the rotational speed of said first assembly in the same direction to drive said continuous paper drive mechanism and said intermittent drive mechanism at synchronous speed by said two motor means.
Claim 3
Dependent Claim
74 words
A drive mechanism for a copying machine having a reciprocating feed board for carrying an original to be copied according to claim 1 wherein said first assembly includes a clutch disk fixedly mounted on a shaft, and said second assembly includes a friction sprocket loosely mounted on said shaft and carrying a cam ring on the periphery thereof adjacent said clutch disk, and rollers being interposed between said clutch disk and said cam ring.
Claim 4
Dependent Claim
90 words
A drive mechanism for a copying machine having a reciprocating feed board for carrying an original to be copied according to claim 1 wherein said continuous paper drive mechanism drives a paper delivery roller in a development section and a delivery roller for delivering sensitive paper out to a tray in said copying machine, and wherein said intermittent drive mechanism drives said reciprocating feed board and a series of paper feed rollers in a paper feed section, in a charged section and in an exposure section in said copying machine.
Claim 5
Dependent Claim
42 words
A drive mechanism for a copying machine having a reciprocating feed board for carrying an original to be copied according to claim 1 wherein said second motor means is a reversibly rotatable motor for driving said intermittent drive mechanism in both directions.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |