US4383753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image formation apparatus
Assignee: Canon Inc
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Filing: 1980-07-08
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Granted: 1983-05-17
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Expires: 2000-07-08
Abstract
Abstract An image formation apparatus has a reciprocally movable member for scanning an original document, a device for forming an image on the basis of the scanned image by the reciprocally movable member, a driver for driving the reciprocally movable member to move the member in a predetermined direction, and a controller for controlling the driving means to drive the reciprocally movable member in the opposite direction near a predetermined position to stop the member at the predetermined position.
Inventors
- 👤 Tsuneki Inuzuka
- 👤 Masato Ishida
- 👤 Yoshihiro Kawatsura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:46
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/528
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
Image formation apparatus comprising: a reciprocally movable member for scanning an original document; means for forming an image on the basis of the scanned image by said reciprocally movable member; first drive means for moving said reciprocally movable member in one direction; second drive means for moving said reciprocally movable member in the opposite direction; and control means for energizing said second driving means to stop said reciprocally movable member at a predetermined position when said reciprocally movable member is moving in said one direction.
Claim 2
Dependent Claim
85 words
Image formation apparatus comprising: a reciprocally movable member for scanning an original document; means for forming an image on the basis of the scanned image by said reciprocally movable member; first drive means for moving said reciprocally movable member in one direction; second drive means for moving said reciprocally movable member in the opposite direction; and control means for energizing said second driving means to stop said reciprocally movable member at a predetermined position when said reciprocally movable member is moving in said one direction.
Claim 3
Dependent Claim
33 words
Image formation apparatus according to claim 1, further comprising means for detecting the stop position of said reciprocally movable member, wherein said control means controls said second drive means by said detecting means.
Claim 4
Dependent Claim
48 words
Image formation apparatus according to claim 1, wherein said second drive means includes a clutch for transmitting a drive force to said member, and said control means temporarily operates said clutch for movement in the opposite direction to stop the movement of said member in the one direction.
Claim 5
Dependent Claim
43 words
Image formation apparatus according to claim 2, wherein said control means operates a first clutch for movement in the one direction and a second clutch for movement in the opposite direction simultaneously to stop the movement of said member in the one direction.
Claim 6
Dependent Claim
79 words
Image formation apparatus comprising: a reciprocally movable member for scanning an original document; means for forming an image on the basis of the scanned image by said reciprocally movable member; drive means for applying drive force to said reciprocally movable member in opposite directions to reciprocate said member; and means for controlling said drive means so as to apply the drive force instantaneously to said reciprocally movable member in one direction when it is moving in the opposite direction.
Claim 7
Dependent Claim
79 words
Image formation apparatus comprising: a reciprocally movable member for scanning an original document; means for forming an image on the basis of the scanned image by said reciprocally movable member; drive means for applying drive force to said reciprocally movable member in opposite directions to reciprocate said member; and means for controlling said drive means so as to apply the drive force instantaneously to said reciprocally movable member in one direction when it is moving in the opposite direction.
Claim 8
Dependent Claim
41 words
Image formation apparatus according to claim 5, wherein said control means is adapted to control said drive means such that the drive force in the one direction is applied to said reciprocally movable member at least near the home position thereof.
Claim 9
Dependent Claim
52 words
Image formation apparatus according to claim 5, wherein said control means is adapted to control said drive means such that the drive force in the one direction is applied to said reciprocally movable member to stop it after the drive force in the opposite direction is applied to said reciprocally movable member.
Claim 10
Dependent Claim
86 words
Image formation apparatus comprising: a reciprocally movable member for scanning an original document; means for forming an image on the basis of the scanned image by said reciprocally movable member; means for applying drive force to said reciprocally movable member to reciprocate it; and means for controlling said drive force applying means such that a drive force is instantaneously applied to said reciprocally movable member in one direction at least near the home position thereof when said reciprocally movable member is moving in the opposite direction.
Claim 11
Dependent Claim
86 words
Image formation apparatus comprising: a reciprocally movable member for scanning an original document; means for forming an image on the basis of the scanned image by said reciprocally movable member; means for applying drive force to said reciprocally movable member to reciprocate it; and means for controlling said drive force applying means such that a drive force is instantaneously applied to said reciprocally movable member in one direction at least near the home position thereof when said reciprocally movable member is moving in the opposite direction.
Claim 12
Dependent Claim
58 words
Image formation apparatus comprising: a reciprocally movable member for image formation; means for detecting the position of said reciprocally movable member, said means including a magnetically biased magnet switch which is a normally closed contact switch; and means for effecting the control for image formation in response to the change of the switch condition of said magnet switch.
Claim 13
Dependent Claim
58 words
Image formation apparatus comprising: a reciprocally movable member for image formation; means for detecting the position of said reciprocally movable member, said means including a magnetically biased magnet switch which is a normally closed contact switch; and means for effecting the control for image formation in response to the change of the switch condition of said magnet switch.
Claim 14
Dependent Claim
33 words
Image formation apparatus according to claim 9, wherein said control means stops the movement of said reciprocally movable member by the signal from said magnet switch and a repetitive image formation termination signal.
Claim 15
Dependent Claim
39 words
Image formation apparatus according to claim 9, wherein said control means moves said reciprocally movable member in a forward direction in response to the signal from said magnet switch and an image formation starting signal to start document exposure.
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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) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |