| US 7,536,125 B2 | ||
| Image forming apparatus capable of suppressing developer waste | ||
| Masanobu Yamamoto, Nara (Japan); Hidenobu Mandai, Nara (Japan); Masahiko Fujita, Nara (Japan); Takayuki Ohno, Nara (Japan); Masaki Saka, Mie (Japan); Kouzou Yamaguchi, Nara (Japan); Osamu Fujimoto, Nara (Japan); and Masaya Asakawa, Nara (Japan) | ||
| Assigned to Sharp Kabushiki Kaisha, Osaka (Japan) | ||
| Appl. No. 10/555,862 PCT Filed Apr. 30, 2004, PCT No. PCT/JP2004/006366 § 371(c)(1), (2), (4) Date Nov. 07, 2005, PCT Pub. No. WO2004/099883, PCT Pub. Date Nov. 18, 2004. |
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| Claims priority of application No. 2003-130453 (JP), filed on May 08, 2003; and application No. 2003-134609 (JP), filed on May 13, 2003. | ||
| Prior Publication US 2006/0216047 A1, Sep. 28, 2006 | ||
| Int. Cl. G03G 15/00 (2006.01) | ||
| U.S. Cl. 399—45 [399/196; 399/198; 399/200] | 20 Claims |
| 1. An image forming apparatus that forms an image on an image carrier based on input image data and transfers the image to
a transported sheet, forming an image on this sheet, the image forming apparatus comprising:
a detecting means for detecting the edge position of the sheet transported toward a transfer point where the image formed
on the image carrier is transferred to the sheet, the detecting means being provided upstream in the sheet transport direction
relative to the transfer point, and
wherein when the size of the image on the image carrier is larger than the size of the sheet transported toward the transfer
point, the size of the image on the image carrier to be transferred to the midstream of the sheet after detection of the sheet
edge position by the detecting means is changed, based on the detection results from the detecting means, and
subsequent image formation to the sheet continues to be performed according to this image on the image carrier whose size
has been changed.
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