US3640622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure-control device in copying machines
Assignee: Konica Minolta Inc
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Filing: 1970-05-07
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Granted: 1972-02-08
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Expires: 1990-05-07
Abstract
Abstract An improved exposure control device for a copying apparatus of the type having a movable optical system in said apparatus for scanning an original to be reproduced, the improved exposure control device having a pivotal shield movable with said optical system for varying the degree of exposure; a bar mounted in said copying apparatus and positioned substantially parallel to the direction of the movement of said optical system, said bar being mounted on said means for operating the exposure control device; and means movably mounted on said bar and mounted on said shield for transmitting motion of said bar to said shield whereby movement of said operating means will change the position of said shield.
Inventors
- 👤 Akira Shinozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526; G03B27/527; G03G; G03G15/00; G03G15/04; G03G15/043; G03G15/0435
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
In a copying apparatus of the type having a movably optical system in said apparatus for scanning an original to be reproduced, the improvement comprising an exposure control device having: a pivotal shield movable with said optical system for varying the degree of exposure; a bar mounted in said copying apparatus and positioned substantially parallel to the direction of movement of said optical system, said bar being mounted on said means for operating the exposure control device; and means movably mounted on said bar and mounted on said shield for transmitting motion of said bar to said shield whereby movement of said operating means will change the position of said shield.
Claim 2
Dependent Claim
111 words
In a copying apparatus of the type having a movably optical system in said apparatus for scanning an original to be reproduced, the improvement comprising an exposure control device having: a pivotal shield movable with said optical system for varying the degree of exposure; a bar mounted in said copying apparatus and positioned substantially parallel to the direction of movement of said optical system, said bar being mounted on said means for operating the exposure control device; and means movably mounted on said bar and mounted on said shield for transmitting motion of said bar to said shield whereby movement of said operating means will change the position of said shield.
Claim 3
Dependent Claim
27 words
An exposure control device as claimed in claim 1 wherein the means for transmitting motion of said bar to said shield are slideably mounted on said bar.
Claim 4
Dependent Claim
65 words
An exposure control device as claimed in claim 1 wherein the means for transmitting motion of said bar to said shield comprises: a contrOl knob fixedly mounted to the bar; a helical gear slideably mounted on the bar; means for transmitting rotation of the bar to said helical gear; and a second gear in engagement with the helical gear and integrally connected with the shield.
Claim 5
Dependent Claim
100 words
An exposure control device as claimed in claim 1 wherein the means for transmitting motion of said bar to said shield comprises: a shaft connected to a control knob; a first rotary plate fixedly connected at one end to the shaft and at the other end to the bar; a second rotary plate rotatably fixed at one end to the inside wall of the copying apparatus and fixedly connected at the other and to the bar; and a connection plate mounted on said shield, said connection plate having a pin on one end thereof in resilient contact with the bar.
Claim 6
Dependent Claim
103 words
An exposure control device as claimed in claim 1 wherein the means for transmitting motion of said bar to said shield comprises: a shaft, to which the shield is fixedly mounted; an arm and a rod connected to said arm, said arm being connected at one end to the shaft and at the other end to a spring; and a crank, rotatably mounted on a crankshaft which is fixedly mounted on the movable optical system, said connecting rod also being mounted on said crank whereby when said crank is rotated, said connecting rod will urge said arm to rotate to pivot said shield.
Claim 7
Dependent Claim
102 words
In an exposure control device as claimed in claim 5 wherein the means for rotating said crank comprises: a crank rod, in contact with said crank by a crank roller mounted at one end of the crank, said crank rod being supported by a crank rod shaft fixed to the machine body of the copying apparatus; a cam roller, mounted on the crank rod; a cam, in contact with the cam roller and mounted on a camshaft which extends to the operation panel of the copying apparatus; and a control knob, affixed to the end of the camshaft on the operation panel.
References Cited (Backward Citations)
US3124996A
Cited
US3504972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |