Patent US5365324A successfully refreshed from Google Patents.
US5365324A
Expired / Lapsed
US
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Multi-image forming apparatus
Assignee: Canon Inc
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Filing: 1993-07-22
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Granted: 1994-11-15
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Expires: 2013-07-22
Abstract
Abstract A multi-image forming apparatus for forming a multi-image by sequentially transferring images formed at a plurality of image forming stations including image bearing members onto a transfer sheet and aims to prevent the damage due to the friction thereof. The apparatus is so designed that, while a transfer sheet conveying means is being engaged by the image bearing members of the plural image forming stations arranged along a transfer sheet feeding direction, the transfer sheet conveying means and the image bearing members are driven without stopping one of these elements (i.e., image bearing members or transfer sheet conveying means) alone.
Inventors
- 👤 Sono Gu
- 👤 Yoshinori Nagao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0105; G03G15/0131; G03G15/0142; G03G15/0178; G03G15/0194; G03G2215/00; G03G2215/01; G03G2215/0103; G03G2215/0119; G03G2215/0151; G03G2215/0154; G03G2215/019; G03G2215/0193
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
154 words
An image forming apparatus comprising: an image bearing member for bearing an image to be transferred to a recording material at a transfer position, said image bearing member moving at a first peripheral speed during the image transfer; convey means for conveying the recording material to the transfer position, said convey means being moveable between a first position in contact with said image bearing member and conveying the recording material, and a second position apart from said image bearing member, said convey means moving at the first peripheral speed while in the first position during the image transfer, wherein as said convey means is moved from the second position to the first position, said image bearing member moves at a second peripheral speed slower than said first peripheral speed and the peripheral speed of said convey means as it moves from the second position to the first position is at the second peripheral speed.
Claim 2
Dependent Claim
154 words
An image forming apparatus comprising: an image bearing member for bearing an image to be transferred to a recording material at a transfer position, said image bearing member moving at a first peripheral speed during the image transfer; convey means for conveying the recording material to the transfer position, said convey means being moveable between a first position in contact with said image bearing member and conveying the recording material, and a second position apart from said image bearing member, said convey means moving at the first peripheral speed while in the first position during the image transfer, wherein as said convey means is moved from the second position to the first position, said image bearing member moves at a second peripheral speed slower than said first peripheral speed and the peripheral speed of said convey means as it moves from the second position to the first position is at the second peripheral speed.
Claim 3
Dependent Claim
46 words
An image forming apparatus according to claim 1, wherein said image forming apparatus starts an image forming process while said convey means is in the second position, and said convey means is moved to the first position from the second position during the image forming process.
Claim 4
Dependent Claim
22 words
An image forming apparatus according to claim 1, wherein said image bearing member and convey means start movement at different acceleration speeds.
Claim 5
Dependent Claim
64 words
An image forming apparatus according to claim 1, further comprising image forming means including charge means for electrically charging said image bearing member uniformly, exposure means for projecting a light beam corresponding to image information to said image bearing member to form a latent image thereon, and developing means for supplying the toner to said image bearing member to develop said latent image thereon.
Claim 6
Dependent Claim
35 words
An image forming apparatus according to claim 1, further comprising additional plural image bearing members wherein an image of each image bearing member is superimposedly transferred to the recording material conveyed by said convey means.
Claim 7
Dependent Claim
16 words
An image forming apparatus according to claim 1, wherein said convey means has a belt-like construction.
Claim 8
Dependent Claim
21 words
An image forming apparatus according to claim 1, wherein said convey means is positioned in the first position upon image transferring.
References Cited (Backward Citations)
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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) | 1997-11-14 | 1998-05-16 | 1998-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-14 | 2002-05-16 | 2002-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-14 | 2006-05-16 | 2006-11-15 | $7700.00 | Window Closed / Lapsed |