CARTRIDGE, UNIT, AND METHOD FOR MANUFACTURING THE SAME

摘要

A cartridge and unit removably attachable to an image forming apparatus, allowing a member for securing a sheet member to be easily mounted with high precision, and capable of preventing leakage of a developing agent and a method for manufacturing the same are provided.;A cleaning unit 2a includes a frame 24 including a waste-toner chamber 30 storing a developing agent eliminated from the image bearing member 21, an end-portion seal member 26a disposed on the frame 24 and being in contact with the image bearing member 21, a scooping sheet 15 including an end arranged on the end-portion seal member 26a and used for preventing the developing agent in the waste-toner chamber 30 from leaking through an area between the frame 24 and the image bearing member 21, and a resin member 10 for securing the scooping sheet 15 to the frame and being injection-molded to the frame 24. The resin forming the resin member 10 is made to enter the end-portion seal member 26a, and the end-portion seal member 26a and the resin member 10 are integrated.

主权项

1. A unit manufacturing method for manufacturing a unit, the unit including
a frame including a developing-agent containing portion, a rotary member rotatably disposed on the frame, an end-portion seal member disposed on the frame and being in contact with an end portion in a lengthwise direction of the rotary member, a thin plate member disposed along the lengthwise direction and including an end in a direction that crosses the lengthwise direction, the end being arranged on the rotary member, and a resin member that secures the thin plate member to the frame and that is injection-molded to the frame, the unit manufacturing method comprising: a first step of arranging the end-portion seal member on the frame; a second step of making a mold come into contact with the frame, injection-molding resin into a space defined by the frame, the end-portion seal member, and the mold, and forming the resin member; a third step of placing the thin plate member on the resin member and bonding the thin plate member to the frame by melting the resin member; and a fourth step of securing the rotary member to the frame, wherein in the second step, resin forming the resin member is made to enter the end-portion seal member, and the end-portion seal member and the resin member are integrated.