Patent US4597663A successfully refreshed from Google Patents.
US4597663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic copying machine of automatic magnification/reduction-controllable type
Assignee: Sharp Corp
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Filing: 1985-04-04
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Granted: 1986-07-01
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Expires: 2005-04-04
Abstract
Abstract An electrophotographic copying machine of an automatic magnification/reduction-controllable type comprises a measurement circuit, a comparison circuit, and a display. The measurement circuit is provided for measuring the lengths of a copy document along its horizontal side and a vertical side. The comparison circuit compares the length of the horizontal side with that of the vertical side. The display displays either a first type of copy paper suitable for longitudinal feed when the length of the horizontal side is longer than that of the vertical side or a second type of copy paper when the length of the horizontal side is shorter than that of the vertical side.
Inventors
- 👤 Shoichiro Yoshiura
- 👤 Haruyoshi Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:16
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/50; G03G15/5095; G03G15/04; G03G15/041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
An electrophotographic copying machine of an automatic magnification/reduction-controllable type comprising: measurement means for measuring the lengths of a horizontal side and a vertical side of a copy document; comparison means responsive to said measurement means for comparing the length of the horizontal side with that of the vertical side; and display means responsive to said comparison means for displaying either a first type of copy paper suitable for longitudinal feed when the length of the horizontal side is longer than that of the vertical side or a second type of copy paper when the length of the horizontal side is shorter than that of the vertical side.
Claim 2
Dependent Claim
107 words
An electrophotographic copying machine of an automatic magnification/reduction-controllable type comprising: measurement means for measuring the lengths of a horizontal side and a vertical side of a copy document; comparison means responsive to said measurement means for comparing the length of the horizontal side with that of the vertical side; and display means responsive to said comparison means for displaying either a first type of copy paper suitable for longitudinal feed when the length of the horizontal side is longer than that of the vertical side or a second type of copy paper when the length of the horizontal side is shorter than that of the vertical side.
Claim 3
Dependent Claim
30 words
The machine of claim 1, further comprising detection means for detecting the lengths of the horizontal side and the vertical side of a sheet of copy paper to be used.
Claim 4
Dependent Claim
54 words
The machine of claim 2, wherein said comparison means is adopted to calculate a first ratio of the length of the horizontal side of the copy paper to that of the copy document and a second ratio of the length of the vertical side of the copy paper to that of the copy document.
Claim 5
Dependent Claim
49 words
The machine of claim 3, wherein said comparison means selects a smaller ratio from the two ratios as the whole ratio when the copy document is to be magnified and a larger ratio from the two ratios as the whole ratio when the copy document is to be reduced.
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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |