PROCESS CARTRIDGE

• Main Authors: MAEDA NAOKI, KOMATSU NORIYUKI, MORI TOMONORI, SASAKI TERUHIKO, HAYASHIDA MAKOTO, HARADA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 09.01.2024
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide a technique that can increase the capacity of a space for storing toner in a process cartridge.SOLUTION: A developing unit 270 removably attached to a photoreceptor unit 260 has: a developing roller 71 that supplies toner to a photoreceptor drum 61 and recovers a toner remaining on a surface of the photoreceptor drum 61; a housing 250 that is formed with a storage space for storing toner; and a pressing receiving part that receives a pressing force exerted by a pressing member 200. The housing 250 has, in an attitude during use, an arcuate first bottom part projecting toward the outside of the storage space, and an arcuate second bottom part projecting toward the outside of the storage space. When seen from a direction along the axis of rotation of the developing roller 71, at least part of the pressing receiving part is arranged in a space surrounded by a tangent line in contact with an outer wall of the first bottom part and an outer wall of the second bottom part, the first bottom part, and the second bottom part.SELECTED DRAWING: Figure 18 【課題】プロセスカートリッジにおけるトナーを収容する空間の容量の増大を図ることができる技術を提供する。【解決手段】感光体ユニット２６０に着脱可能な現像ユニット２７０は、感光体ドラム６１へのトナーの供給及び感光体ドラム６１の表面に残ったトナーの回収を行う現像ローラ７１と、トナーを収容する収容空間が形成されている筐体２５０と、押圧部材２００による押圧力を受ける押圧受け部と、を有する。筐体２５０は、使用時の姿勢において、収容空間の外側に向けて突出する円弧状の第１の底部と、収容空間の外側に向けて突出する円弧状の第２の底部と、を有する。現像ローラ７１の回転軸に沿った方向から見たとき、第１の底部の外壁及び第２の底部の外壁と接する接線と、第１の底部と、第２の底部とで囲まれる空間に、押圧受け部の少なくとも一部が配置されるように構成されている。【選択図】図１８