US3597075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing device for use with photocopying machine
Assignee: Ricoh Co Ltd
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Filing: 1968-12-11
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Granted: 1971-08-03
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Expires: 1988-12-11
Abstract
Abstract A processing device for a photocopying machine, wherein a plurality of detecting resistors in a capacitor charging circuit detect the width as well as the length of a photosensitive paper. The charging velocity of the capacitor is controlled in response to the number of detecting resistors actuated by the photosensitive paper. The quantity of processing solution is controlled in response to the charging velocity.
Inventors
- 👤 Yugoro Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:11
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A processing device for use with a photocopying machine comprising: means for detecting the width as well as the length of a photosensitive paper transported through the machine; means operatively connected to said detecting means for controlling the quantity of a processing solution in response to the size of the paper; said detecting means comprising a plurality of detection switches which are spaced apart from each other by a suitable distance in the direction of the width of the photosensitive paper and which are connected in series with each other; resistor means connected in parallel with each of said detection switches; said control means comprising a capacitor operatively connected for charging through said detecting means; means for controlling the discharge of said capacitor; and means for actuating a processing solution supply pump in response to the discharge of said capacitor.
Claim 2
Dependent Claim
140 words
A processing device for use with a photocopying machine comprising: means for detecting the width as well as the length of a photosensitive paper transported through the machine; means operatively connected to said detecting means for controlling the quantity of a processing solution in response to the size of the paper; said detecting means comprising a plurality of detection switches which are spaced apart from each other by a suitable distance in the direction of the width of the photosensitive paper and which are connected in series with each other; resistor means connected in parallel with each of said detection switches; said control means comprising a capacitor operatively connected for charging through said detecting means; means for controlling the discharge of said capacitor; and means for actuating a processing solution supply pump in response to the discharge of said capacitor.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |