US5555082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus that releases sheet conveying force after the sheet reaches a recording material carrying member
Assignee: Canon Inc
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Filing: 1993-10-12
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Granted: 1996-09-10
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Expires: 2013-10-12
Abstract
Abstract An image forming apparatus includes an image bearing member; a recording material carrying member for carrying a recording material, wherein an image is transferred from the image bearing member to the recording material carried on the recording material carrying member; a conveyor means for conveying the recording material to the recording material carrying member; and a releasing device for for releasing the recording material from the a conveyor after a leading edge of the recording material is supported on the recording material carrying member.
Inventors
- 👤 Kiyoharu Tanaka
- 👤 Hajime Suzuki
- 👤 Koji Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:12
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/16; G03G15/163; G03G15/1635; G03G15/165; G03G15/65; G03G15/6555; G03G15/6558; G03G15/6561; G03G15/6564; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00405; G03G2215/00409
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
111 words
An image forming apparatus, comprising: an image bearing member; a recording material carrying member for carrying a recording material to an image transfer station where an image is transferred from said image bearing member to the recording material carried on said recording material carrying member; conveying means for applying conveying force to the recording material at a conveying position to convey the recording material to said recording material carrying member; and releasing means for releasing the conveying force of said conveying means at the conveying position after a leading edge of the recording material is carried on said recording material carrying member and before the leading edge reaches a transfer position.
Claim 2
Dependent Claim
111 words
An image forming apparatus, comprising: an image bearing member; a recording material carrying member for carrying a recording material to an image transfer station where an image is transferred from said image bearing member to the recording material carried on said recording material carrying member; conveying means for applying conveying force to the recording material at a conveying position to convey the recording material to said recording material carrying member; and releasing means for releasing the conveying force of said conveying means at the conveying position after a leading edge of the recording material is carried on said recording material carrying member and before the leading edge reaches a transfer position.
Claim 3
Dependent Claim
37 words
An apparatus according to claim 1, wherein said conveying means includes a pair of rotatable members press-contacted to each other to form a nip for conveying the recording material, and said releasing means separates the rotatable members.
Claim 4
Dependent Claim
39 words
An apparatus according to claim 1, wherein said conveying means includes a pair of rotatable members press-contacted to each other to form a nip for conveying the recording material, and said releasing means reduces pressure between the rotatable members.
Claim 5
Dependent Claim
39 words
An apparatus according to claim 1, wherein said conveying means includes a pair of rotatable members press-contacted to each other to form a nip for conveying the recording material, and said releasing means makes the rotatable members freely rotatable.
Claim 6
Dependent Claim
35 words
An apparatus according to claim 1, wherein said recording material carrying member attracts the recording material thereon, and when a predetermined length of the recording material is attracted, said releasing means releases the recording material.
Claim 7
Dependent Claim
42 words
An apparatus according to claim 1, wherein said conveying means includes a pair of registration rollers for feeding the recording material to said recording material carrying member at predetermined timing, and said releasing means releases the recording material from said registration rollers.
Claim 8
Dependent Claim
29 words
An apparatus according to claim 1, different color toner images are sequentially formed on said image bearing member, and the toner images are sequentially overlaid on the recording material.
Claim 9
Dependent Claim
18 words
An apparatus according to claim 7, further comprising means for fixing overlapped toner images into a full-color image.
Claim 10
Dependent Claim
109 words
An image forming apparatus, comprising: an image bearing member; a recording material carrying member for carrying a recording material to an image transfer station where an image is transferred from said image bearing member to the recording material carried on said recording material carrying member; conveying means for applying conveying force to the recording material at a conveying position to convey the recording material to said recording material carrying member; wherein the conveying force of said conveying means at the conveying position is released after a leading edge of the recording material is carried on said recording material carrying member and before the leading edge reaches a transfer position.
Claim 11
Dependent Claim
109 words
An image forming apparatus, comprising: an image bearing member; a recording material carrying member for carrying a recording material to an image transfer station where an image is transferred from said image bearing member to the recording material carried on said recording material carrying member; conveying means for applying conveying force to the recording material at a conveying position to convey the recording material to said recording material carrying member; wherein the conveying force of said conveying means at the conveying position is released after a leading edge of the recording material is carried on said recording material carrying member and before the leading edge reaches a transfer position.
Claim 12
Dependent Claim
40 words
An apparatus according to claim 9, wherein said conveying means includes a pair of rotatable members press-contacted to each other to form a nip for conveying the recording material, and the recording material is released by separating the rotatable members.
Claim 13
Dependent Claim
42 words
An apparatus according to claim 9, wherein said conveying means includes a pair of rotatable members press-contacted to each other to form a nip for conveying the recording material, and the recording material is released by reducing pressure between the rotatable members.
Claim 14
Dependent Claim
42 words
An apparatus according to claim 9, wherein said conveying means includes a pair of rotatable members press-contacted to each other to form a nip for conveying the recording material, and the recording material is released by making the rotatable members freely rotatable.
Claim 15
Dependent Claim
33 words
An apparatus according to claim 9, wherein said recording material carrying member attracts the recording material thereon, and when a predetermined length of the recording material is attracted, the recording material is released.
Claim 16
Dependent Claim
17 words
An apparatus according to claim 13, wherein said recording material carrying member electrostatically attracts the recording material.
Claim 17
Dependent Claim
48 words
An apparatus according to claim 9, wherein said conveying means includes a pair of registration rollers press-contacted to each other to form a nip for conveying the recording material to said recording material carrying member at predetermined timing, and the recording material is released from the registration rollers.
Claim 18
Dependent Claim
29 words
An apparatus according to claim 9, different color toner images are sequentially formed on said image bearing member, and the toner images are sequentially overlaid on the recording material.
Claim 19
Dependent Claim
18 words
An apparatus according to claim 16, further comprising means for fixing overlapped toner images into a full-color image.
Claim 20
Dependent Claim
22 words
An apparatus according to claim 1 or 17, wherein said recording material carrying member comprises a sheet for carrying the recording material.
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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) | 1999-09-10 | 2000-03-11 | 2000-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-10 | 2004-03-11 | 2004-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-10 | 2008-03-11 | 2008-09-10 | $7700.00 | Window Closed / Lapsed |