Patent US4595281A successfully refreshed from Google Patents.
US4595281A
Expired / Lapsed
US
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Original document scanning device
Assignee: Toshiba Corp
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Filing: 1985-01-03
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Granted: 1986-06-17
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Expires: 2005-01-03
Abstract
Abstract An original scanning device includes a scanner for exposing an original and guiding light reflected from the original, and control means for moving the scanning means along the original at a preselected speed. The control means stores only speed data corresponding to the maximum rate of scanning and uses the data to scan at other preselected speeds.
Inventors
- 👤 Hideshi Oushiden
- 👤 Akihiro Nishijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
An original document scanning device comprising: scanning means for exposing an original document and directing light reflected from the original, driving means for moving said scanning means along said original document of a preselected speed, memory means for storing data relative to an acceleration to bring said scanning means to a maximum scanning speed, and control means for reading data, required to bring said scanning means to a preselected speed, from among the data stored in said memory means and for controlling said driving means according to the read data.
Claim 2
Dependent Claim
90 words
An original document scanning device comprising: scanning means for exposing an original document and directing light reflected from the original, driving means for moving said scanning means along said original document of a preselected speed, memory means for storing data relative to an acceleration to bring said scanning means to a maximum scanning speed, and control means for reading data, required to bring said scanning means to a preselected speed, from among the data stored in said memory means and for controlling said driving means according to the read data.
Claim 3
Dependent Claim
47 words
The original scanning device according to claim 1, wherein: said control means includes a subprocessor for controlling driving of said scanning means and producing output status signals showing operating conditions of driving, and a main processor which receives status signals from said subprocessor and controls said subprocessor.
Claim 4
Dependent Claim
19 words
The original scanning device according to claim 2, wherein: said subprocessor controls the scanning speed of said scanning means.
References Cited (Backward Citations)
US4343036A
Cited
US4436416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |