| 摘要 |
A developer having a sharp amount-of-charge distribution, not contaminating the charger, developing unit, photosensitive body, and intermediate transfer body, capable of producing a high-definition image, especially an image almost free from ground stain and having an adequate image density even after the developer is used for producing many electrophotographs. An electrophotographic image forming apparatus is also disclosed. |
| 申请人 |
RICOH COMPANY, LTD.;NAKAYAMA, SHINYA;MOCHIZUKI, SATOSHI;IWAMOTO, YASUAKI;ASAHINA, YASUO;UMEMURA, KAZUHIKO;SUGIURA, HIDEKI;NAKAJIMA, HISASHI;ICHIKAWA, TOMOYUKI;UTSUMI, TOMOKO;SAKATA, KOICHI;KOTSUGAI, AKIHIRO;UCHINOKURA, OSAMU;ISHII, MASAYUKI |
发明人 |
NAKAYAMA, SHINYA;MOCHIZUKI, SATOSHI;IWAMOTO, YASUAKI;ASAHINA, YASUO;UMEMURA, KAZUHIKO;SUGIURA, HIDEKI;NAKAJIMA, HISASHI;ICHIKAWA, TOMOYUKI;UTSUMI, TOMOKO;SAKATA, KOICHI;KOTSUGAI, AKIHIRO;UCHINOKURA, OSAMU;ISHII, MASAYUKI |
