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US4635129A
Expired / Lapsed
US
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Image scanning apparatus
Assignee: Canon Inc
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Filing: 1984-03-26
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Granted: 1987-01-06
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Expires: 2004-03-26
Abstract
Abstract An image scanning apparatus comprises a scanner for scanning an original sheet, a measuring section for measuring a time required for the scanner to move from a first position, e.g. a home position of the scanner, to a second position, e.g. a leading edge position of a record paper, and a timing circuit for determining a start timing of a scan of the scanner in accordance with the time measured by the measuring section.
Inventors
- 👤 Ken Miyagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/387; H04N1/3872; H04N1/3873
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
54 words
An image scanning apparatus comprising: scan means for scanning an original sheet; measuring means for measuring a time required for said scan means to move from a first position to a second position; and timing means for determining a start timing of image processing in accordance with the time measured by said measuring means.
Claim 2
Dependent Claim
54 words
An image scanning apparatus comprising: scan means for scanning an original sheet; measuring means for measuring a time required for said scan means to move from a first position to a second position; and timing means for determining a start timing of image processing in accordance with the time measured by said measuring means.
Claim 3
Dependent Claim
33 words
An image scanning apparatus according to claim 1, wherein said timing means determines the start timing of the scan by said scan means in accordance with the time measured by said measuring means.
Claim 4
Dependent Claim
31 words
An image scanning apparatus according to claim 1, further comprising record means capable of recording on a record medium at a different timing from the scan timing of said scan means.
Claim 5
Dependent Claim
34 words
An image scanning apparatus according to claim 3, wherein said timing means determines a start timing of a record operation of said record means in accordance with the time measured by said measuring means.
Claim 6
Dependent Claim
58 words
An image scanning apparatus according to claim 2, further comprising record means capable of recording on a record medium at a different timing from the scan timing of said scan means, said timing means determining the start timing of the scan by said scan means based on the start timing of the record operation of said record means.
Claim 7
Dependent Claim
38 words
An image scanning apparatus according to claim 1, wherein said measuring means measures a time required for the scan means to move from the first position to the second position during a pre-scan operation of said scan means.
Claim 8
Dependent Claim
33 words
An image scanning apparatus according to claim 1, wherein said first position is a stop position of said scan means and said second position is a leading edge position of the original sheet.
Claim 9
Dependent Claim
59 words
An image scanning apparatus according to claim 5, wherein said timing means determines the start timing of the scan by said scan means in accordance with a shift distance of the image read by said scan means from the original sheet so that the image of the original sheet is shifted to a desired area on the record medium.
Claim 10
Dependent Claim
28 words
An image scanning apparatus according to claim 1, further comprising means for converting the image of the original sheet scanned by said scan means to an electrical signal.
Claim 11
Dependent Claim
62 words
An image forming apparatus comprising: scan means for scanning an original sheet; setting means for setting an image forming mode; pre-scan means for effecting pre-scan by said scan means; and timing means for determining a start timing of a scan by said scan means in accordance with the image forming mode set by said setting means and a result of said pre-scan.
Claim 12
Dependent Claim
62 words
An image forming apparatus comprising: scan means for scanning an original sheet; setting means for setting an image forming mode; pre-scan means for effecting pre-scan by said scan means; and timing means for determining a start timing of a scan by said scan means in accordance with the image forming mode set by said setting means and a result of said pre-scan.
Claim 13
Dependent Claim
34 words
An image forming apparatus according to claim 10, wherein said pre-scan means includes measuring means for measuring a time required for said scan means to move from a first position to a second position.
Claim 14
Dependent Claim
43 words
An image forming apparatus according to claim 11, wherein said timing means determines the start timing of the scan by said scan means in accordance with the time measured by said measuring means and the image forming mode set by said setting means.
Claim 15
Dependent Claim
54 words
An image forming apparatus according to claim 12, further comprising record means for recording the image of the original sheet read by said scan means on a record medium, said setting means being capable of setting a mode to shift the image of the original sheet to a desired area on the record medium.
Claim 16
Dependent Claim
33 words
An image forming apparatus according to claim 11, wherein said first position is a stop position of said scan means and said second position is a leading edge position of the original sheet.
Claim 17
Dependent Claim
36 words
An image forming apparatus according to claim 13, wherein said timing means determines the start timing of the scan of said scan means based on the start timing of the record operation of said record means.
References Cited (Backward Citations)
US4325086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |