US4436402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying machine
Assignee: Konica Minolta Inc
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Filing: 1980-11-10
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Granted: 1984-03-13
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Expires: 2000-11-10
Abstract
Abstract In a copying machine in which the distance of projection scanning is varied by relative movement between the copy board and the optical system in accordance with the size of the original, indices are provided on the copy board for positioning the original so that the shorter side of the original always corresponds to the direction of scanning. This unification of original placement results not only in a shortening in the distance of the projection scanning but an increase in copying speed.
Inventors
- 👤 Ryubun Seimiya
- 👤 Fumio Iwai
- 👤 Isao Nosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:22
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6214
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
In an electrophotographic copying machine of the type in which an original placed upon a copy board is scanned and its image projected upon a photosensitive surface, and in which the effective distance between said original and the photosensitive surface may be varied depending upon the size of the original to be scanned, the improvement comprising indexing means on said copy board indicating the placement of the original to be scanned relative to a central base line, said indexing means being so dimensioned that the shorter side of the original always corresponds to the direction of scanning.
Claim 2
Dependent Claim
97 words
In an electrophotographic copying machine of the type in which an original placed upon a copy board is scanned and its image projected upon a photosensitive surface, and in which the effective distance between said original and the photosensitive surface may be varied depending upon the size of the original to be scanned, the improvement comprising indexing means on said copy board indicating the placement of the original to be scanned relative to a central base line, said indexing means being so dimensioned that the shorter side of the original always corresponds to the direction of scanning.
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) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |