Patent US4772898A successfully refreshed from Google Patents.
US4772898A
Expired / Lapsed
US
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Recording apparatus
Assignee: Canon Inc
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Filing: 1987-10-01
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Granted: 1988-09-20
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Expires: 2007-10-01
Abstract
Abstract This specification discloses a recording apparatus for recording an image corresponding to image information on a sheet. More particularly, the specification discloses a recording apparatus for recording an image corresponding to image information on a sheet which apparatus has a head for effecting recording in the form of a dot matrix, a support device for movably supporting the head, a conveying device for conveying the sheet, and a drive source for imparting a drive force for causing the head to scan a plurality of times each time one line is recorded and a drive force for driving the conveying device.
Inventors
- 👤 Atsushi Noda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:11
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/485; B41J2/505; B41J2/5056; B41J19/00; B41J19/76; B41J19/78; B41J19/94
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
200 words
A recording apparatus comprising: a recording head for recording an image on a sheet; moving means providing a drive force for reciprocally scanning said recording head along successive recording lines across the sheet; conveyance means for conveying the sheet; transmission means including a rotatable member having a plurality of first engaging portions angularly displaced from each other at predetermined locations; transfer means having a plurality of second engaging portions, said transfer means being displaceable in response to the movement of said recording head so as to cause the first and second engaging portions to engage, wherein said transfer means is arranged for transferring the drive force provided by said moving means to said transmission means to transmit the drive force to said conveyance means; and control means for controlling said transfer means so that after a first recording scan across the sheet by said recording head, said transfer means performs a first rotation by an angle less than that formed by the first engaging portions, then said record head effects a second recording scan, and thereafter said transfer means effects a second rotation by an angle corresponding to a predetermined pitch between recording lines irrespective of said first rotation angle.
Claim 2
Dependent Claim
200 words
A recording apparatus comprising: a recording head for recording an image on a sheet; moving means providing a drive force for reciprocally scanning said recording head along successive recording lines across the sheet; conveyance means for conveying the sheet; transmission means including a rotatable member having a plurality of first engaging portions angularly displaced from each other at predetermined locations; transfer means having a plurality of second engaging portions, said transfer means being displaceable in response to the movement of said recording head so as to cause the first and second engaging portions to engage, wherein said transfer means is arranged for transferring the drive force provided by said moving means to said transmission means to transmit the drive force to said conveyance means; and control means for controlling said transfer means so that after a first recording scan across the sheet by said recording head, said transfer means performs a first rotation by an angle less than that formed by the first engaging portions, then said record head effects a second recording scan, and thereafter said transfer means effects a second rotation by an angle corresponding to a predetermined pitch between recording lines irrespective of said first rotation angle.
Claim 3
Dependent Claim
43 words
A recording apparatus according to claim 1, wherein said recording head records a matrix of dots on the sheet and the angle that said control means rotates said transfer means after the first recording scan corresponds to one half the pitch between dots.
Claim 4
Dependent Claim
30 words
A recording apparatus according to claim 1, further comprising a rotatable member which supports the sheet and which retracts the sheet when the first and second engaging portions are engaged.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |