DEVELOPING ASSEMBLY AND PROCESS CARTRIDGE USING THE SAME, AND IMAGE FORMING APPARATUS

• Main Authors: KUGE HIDEKI, AWANO TOYOHIKO
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2015
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To suppress, in employing a mechanism to contact and separate an image holding body assembly and a developing assembly on one end in the longitudinal direction, stress distortion to the developing assembly compared with the case not including a reinforced frame.SOLUTION: A developing assembly includes: an urging member 3 that presses a developer holding body 2a against both ends in the longitudinal direction of an image holding body 1a of an image holding body assembly 1; a contact/separation mechanism 4 that is provided at one end in the longitudinal direction of the developer holding body 2a to move the image holding body 1a and the developer holding body 2a at one end in a direction to be widely separated from the other end against the urging force of the urging member 3; and a reinforced frame 6 that includes a plurality of first frame bodies 7 that are provided integrally with one face extending in the longitudinal direction of a development container 5 and extend at least in the longitudinal direction of the development container 5, and a plurality of second frame bodies 8 that connect the plurality of first frame bodies 7. 【課題】像保持体組立体と現像組立体とを長手方向一端側で接離する機構を採用するに当たり、補強枠体を備えない場合に比べて、現像組立体への応力歪みを抑える。【解決手段】像保持体組立体１の像保持体１ａの長手方向両端に対し、現像剤保持体２ａを押し付ける付勢部材３と、現像剤保持体２ａの長手方向の一端に設けられ、像保持体１ａと現像剤保持体２ａとを付勢部材３による付勢力に抗して一端側で他端側より大きく離れる方向に移動させる接離機構４と、現像容器５の長手方向に延びる一側面に一体的に設けられ、少なくとも現像容器５の長手方向に延びる複数の第１枠体７と、複数の第１枠体７間を連結する第２枠体８とを含む補強枠体６と、を備えている。【選択図】図１