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Image forming apparatus featuring a four-step image bearing member controller Grant 7,120,376 - Saito , et al. October 10, 2 | 2006-10-10 |
Image forming apparatus App 20060222400 - Matsuguma; Minoru ;   et al. | 2006-10-05 |
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Method of detecting life of image bearing member, image forming apparatus and cartridge Grant 6,961,527 - Matsuguma , et al. November 1, 2 | 2005-11-01 |
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Image forming apparatus having different modes for preventing defective cleaning Grant 6,771,924 - Matsuguma August 3, 2 | 2004-08-03 |
Method of detecting life of image bearing member, image forming apparatus and cartridge App 20040076441 - Matsuguma, Minoru ;   et al. | 2004-04-22 |
Method of detecting life of image bearing member, image forming apparatus and cartridge Grant 6,704,524 - Matsuguma , et al. March 9, 2 | 2004-03-09 |
Image forming apparatus, image bearing member life detecting method, and process cartridge detachably attachable to image forming apparatus Grant 6,654,568 - Matsuguma November 25, 2 | 2003-11-25 |
Image forming apparatus, image bearing member life detecting method, and process cartridge detachably attachable to image forming apparatus App 20030095805 - Matsuguma, Minoru | 2003-05-22 |
Method of detecting life of image bearing member, image forming apparatus and cartridge App 20030081958 - Matsuguma, Minoru ;   et al. | 2003-05-01 |
Image forming apparatus App 20030063928 - Matsuguma, Minoru | 2003-04-03 |
Method of detecting life of image bearing member, image forming apparatus and cartridge App 20030026621 - Matsuguma, Minoru ;   et al. | 2003-02-06 |
Sheet conveying apparatus and image forming apparatus Grant 6,493,534 - Sawanaka , et al. December 10, 2 | 2002-12-10 |
Image forming apparatus, image bearing member life detecting method, and process cartridge detachably attachable to image forming apparatus App 20020150401 - Matsuguma, Minoru | 2002-10-17 |
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