US4685793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus
Assignee: Canon Inc
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Filing: 1986-09-23
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Granted: 1987-08-11
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Expires: 2006-09-23
Abstract
Abstract In an image forming apparatus for forming images at an image forming section after conveying sheet materials by the one side reference method, sheet materials of sizes smaller than a predetermined size are conveyed in accordance with a one side reference position, and sheet materials of sizes larger than the predetermined size are guided in accordance with a position shifted from the one side reference position.
Inventors
- 👤 Takamasa Sawada
- 👤 Junji Ihikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:27
CPC Classifications
B; B65; B65H; B65H1/00; B65H1/26; B65H1/266; B65H1/04; B65H9/00; G; G03; G03G; G03G15/00; G03G15/65; G03G15/6502; G03G15/6508; G03G15/6514; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00379; G03G2215/00383; G03G2215/00392; G03G2215/00443; G03G2215/00447; G03G2215/00523; G03G2215/00535; G03G2215/00556; G03G2215/00594
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
An image forming apparatus comprising: image forming means for forming an image on a sheet material; means for conveying the sheet material to said image forming means; and guide means for guiding sheet materials with reference to one side reference position when sheet materials of sizes smaller than a predetermined size are to be conveyed and for guiding sheet materials with reference to a reference position shifted from the one side reference position when sheet materials of a size larger than the predetermined size are to be conveyed.
Claim 2
Dependent Claim
88 words
An image forming apparatus comprising: image forming means for forming an image on a sheet material; means for conveying the sheet material to said image forming means; and guide means for guiding sheet materials with reference to one side reference position when sheet materials of sizes smaller than a predetermined size are to be conveyed and for guiding sheet materials with reference to a reference position shifted from the one side reference position when sheet materials of a size larger than the predetermined size are to be conveyed.
Claim 3
Dependent Claim
38 words
An apparatus according to claim 1, wherein said image forming means has a width which corresponds to a width of a sheet material of a size smaller than that of a sheet material of a maximum size usable.
Claim 4
Independent Claim
28 words
An apparatus according to c1aim 1, wherein said image forming means has a width which corresponds to a width of a sheet material of a maximum size usable.
Claim 5
Independent Claim
28 words
An apparatus according to c1aim 1, wherein said image forming means has a width which corresponds to a width of a sheet material of a maximum size usable.
Claim 6
Independent Claim
23 words
An apparatus according to any one of claims 1 to 3, wherein said image forming means has transfer means adopting an electrophotographic method.
Claim 7
Dependent Claim
33 words
An apparatus according to claim 4, wherein sheet material separating means is fixed to oppose an end of said image forming means which is at the side of the one side reference position.
Claim 8
Dependent Claim
30 words
An apparatus according to claim 5, wherein image forming means comprises a process cartridge which has at least a photosensitive body and is detachably mounted on an apparatus main body.
Claim 9
Dependent Claim
103 words
An image forming apparatus comprising: image forming means for forming an image on a sheet material; means for conveying the sheet material to said image forming means; and guide means for guiding sheet materials with reference to one side reference position when sheet materials of sizes smaller than a predetermined size that corresponds to a maximum width of an image forming area of the image forming means are to be conveyed and for guiding sheet material with reference to a reference position shifted from the one side reference position when sheet materials of sizes larger than the predetermined size are to be conveyed.
Claim 10
Dependent Claim
103 words
An image forming apparatus comprising: image forming means for forming an image on a sheet material; means for conveying the sheet material to said image forming means; and guide means for guiding sheet materials with reference to one side reference position when sheet materials of sizes smaller than a predetermined size that corresponds to a maximum width of an image forming area of the image forming means are to be conveyed and for guiding sheet material with reference to a reference position shifted from the one side reference position when sheet materials of sizes larger than the predetermined size are to be conveyed.
References Cited (Backward Citations)
US4417801A
Cited
US4334759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |