PROCESS CARTRIDGE, IMAGE FORMATION APPARATUS AND ELECTRIFICATION UNIT

• Main Authors: MIURA HIROYUKI, ROKUTAN MINORU
• Format: Patent
• Language: English; Japanese
• Published: 25.01.2018
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a process cartridge which suppresses the occurrence of stripe-shaped image defects that occur at the initial stage of use.SOLUTION: A process cartridge includes: a photoreceptor (image holding body) 12; an electrification member 14 which electrifies the surface of the photoreceptor 12 by being in contact with the photoreceptor 12; and a cleaning member 100 which cleans the surface of the electrification member 14 by being in contact with the electrification member 14. The electrification member 14 is the roll-shaped electrification member in which an elastic layer 14B is formed around a conductive core body 14A. The cleaning member 100 is the roll-shaped cleaning member in which an elastic layer 104 is provided on the outer peripheral surface of a core body 102. The cleaning member having particles on the surface is used as the cleaning member 100. The existence ratio of the particles on the surface of the cleaning member 100 is preferably within a range in which the area ratio existing on the surface of the cleaning member 100 is equal to or greater than 5%.SELECTED DRAWING: Figure 3 【課題】使用初期に生じる筋状の画像欠陥の発生が抑制されるプロセスカートリッジの提供。【解決手段】プロセスカートリッジは、感光体（像保持体）１２、感光体１２に接触して感光体１２の表面を帯電させる帯電部材１４、および帯電部材１４に接触して帯電部材１４の表面を清掃する清掃部材１００を備える。帯電部材１４は、導電性芯体１４Ａの周囲に弾性層１４Ｂが形成されたロール状の帯電部材である。清掃部材１００は、芯体１０２の外周面に弾性層１０４が設けられたロール状の清掃部材である。この清掃部材１００として、表面に粒子を有する清掃部材が用いられる。清掃部材１００の表面に有する粒子の存在割合は、清掃部材１００の表面に存在する面積率で５％以上の範囲であることがよい。【選択図】図３