EP0260892A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Copier with accurately position-controllable sub-scanning unit
Assignee: Panasonic Holdings Corp
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Filing: 1987-09-11
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Granted: —
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Expires: 2007-09-11
Abstract
Abstract There is disclosed a copier comprising an original table for placing thereon an original sheet, a sub-scanning unit including an image reading sensor reading an image on the original sheet for scanning the original sheet on the original table, a printing unit which prints the image read by the image reading sensor on a printing sheet, and a control unit which controls the operation of the sub-scanning unit by selectively using a position profile control and a speed profile control. The operation start position and operation start timing control of the sub-scanning unit by the position profile control permits high-speed continuous repetitive copying and high-accuracy enlargement, reduction, and transfer copying.
Inventors
- 👤 Kazuyuki Murata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 16:01
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/047; H04N1/0473; H04N1/387; H04N1/3872; H04N1/3873; H04N1/3875; H04N1/10; H04N1/1013; H04N1/1017; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N2201/00; H04N2201/024; H04N2201/02406; H04N2201/02439; H04N2201/04; H04N2201/047; H04N2201/04701; H04N2201/04703; H04N2201/0471; H04N2201/04715; H04N2201/04724; H04N2201/04725; H04N2201/04732; H04N2201/04734; H04N2201/04737; H04N2201/04739; H04N2201/04753; H04N2201/04755; H04N2201/04794
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A copier comprising: an original table for placing thereon an original sheet; a sub-scanning unit including an image reading means for reading an image on the original sheet on the original table for scanning the original sheet on the original table; a printing means which prints the image read by the image reading means on a printing sheet; and a control means which controls the operation of the sub-scanning unit by selectively using a position profile control and a speed profile control.
Claim 2
Dependent Claim
82 words
A copier comprising: an original table for placing thereon an original sheet; a sub-scanning unit including an image reading means for reading an image on the original sheet on the original table for scanning the original sheet on the original table; a printing means which prints the image read by the image reading means on a printing sheet; and a control means which controls the operation of the sub-scanning unit by selectively using a position profile control and a speed profile control.
Claim 3
Dependent Claim
27 words
A copier as claimed in Claim 1, wherein said control means controls an operation start position of the sub-scanning unit according to an image reading start position.
Claim 4
Dependent Claim
59 words
A copier as claimed in Claim 1, further comprising a copy mode selection means for selecting a copy mode including at least one of enlargement, reduction and transfer, wherein said control means controls an operation start position and an operation start timing of the sub-scanning unit according to an original sheet reading start position and a selected copy mode.
Claim 5
Dependent Claim
63 words
A copier as claimed in Claim 1, wherein said control means is provided with a storage means for storing data for determining an operation start position and an operation start timing of the sub-scanning unit, and controls an operation start position and an operation start timing of the sub-scanning unit by reading out the stored data according to an image reading start position.
Claim 6
Dependent Claim
88 words
A copier as claimed in Claim 1, further comprising a copy mode selection means for selecting a copy mode including at least one of enlargement, reduction, and transfer of copying image, wherein said control means is provided with a storage means storing data for determining an operation start position and an operation start timing of the sub-scanning unit and controls the operation start position and start timing of the sub-scanning unit by reading the stored data according to an image reading start position and a selected copy mode.
Claim 7
Dependent Claim
132 words
A copier as claimed in Claim 1, wherein said control means comprises: a drive means for driving the sub-scanning unit; a status detecting means for detecting position and speed of the sub-scanning unit; a storage means for storing position reference data and speed reference data; a position control means constituting a position servo loop together with the drive means and the status detecting means; a speed control means constituting a speed servo loop together with the drive means and the status detecting means: a servo loop selecting means for selecting one of the position servo loop and the speed servo loop; and a central processing unit selectively controlling the position control means and the speed control means by using the position reference data and speed reference data stored in the storage means.
Claim 8
Dependent Claim
41 words
A copier as claimed in Claim 1, wherein said control means comprises: a position control means for controlling the sub-scanning unit by the position profile control; a speed control means for controlling the sub-scanning unit by the speed profile control; and
Claim 9
Dependent Claim
25 words
a control selection means for selectively changing over the position control means and speed control means according to an operating condition of the sub-scanning unit.
Claim 10
Dependent Claim
25 words
a control selection means for selectively changing over the position control means and speed control means according to an operating condition of the sub-scanning unit.
References Cited (Backward Citations)
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