US3858975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying apparatus
Assignee: Canon Inc
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Filing: 1972-07-13
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Granted: 1975-01-07
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Expires: 1992-07-13
Abstract
Abstract This specification discloses improvements in a copying apparatus of the type wherein an original to be copied is moved on a glass plate or the like while being pressed against the plate with the aid of a rotatable roller. The improvements consist in that the pressure roller is covered with a fur and spaced apart from the glass plate by such a distance that the covering fur imparts a light pressure to the original.
Inventors
- 👤 Wilhelm Knechtel
- 👤 Gerhard Petersdorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:19
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6257
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
63 words
A copying machine comprising a flat glass plate, means for transporting an original on said flat glass plate, and a rotatable pressure roller having thereon a white fur covering, said pressure roller being disposed above said flat glass plate at a predetermined position to input a light pressure on said original while being transported between said flat glass plate and said pressure roller.
Claim 2
Dependent Claim
63 words
A copying machine comprising a flat glass plate, means for transporting an original on said flat glass plate, and a rotatable pressure roller having thereon a white fur covering, said pressure roller being disposed above said flat glass plate at a predetermined position to input a light pressure on said original while being transported between said flat glass plate and said pressure roller.
Claim 3
Dependent Claim
16 words
A copying machine according to claim 1, wherein said fur covering is made of rabbit fur.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |