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Image forming apparatus having waste toner container commonly used for photosensitive drums and transfer belt

  • US 9,933,747 B2
  • Filed: 05/23/2017
  • Issued: 04/03/2018
  • Est. Priority Date: 11/26/2013
  • Status: Active Grant
First Claim
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1. An image forming apparatus comprising:

  • a casing including a first wall and a second wall facing the first wall in an array direction;

    a first process cartridge including a first photosensitive drum and a first drum-cleaning unit configured to collect waste toner on the first photosensitive drum;

    a second process cartridge including a second photosensitive drum and a second drum-cleaning unit configured to collect waste toner on the second photosensitive drum;

    a cartridge-supporting body including a third wall, a fourth wall arranged between the third wall and the second wall in the array direction, a first guide rail and a second guide rail and configured to support the first process cartridge and the second process cartridge, the cartridge-supporting body being movable between an internal position inside the casing and an external position outside of the casing, the first process cartridge being arranged between the third wall and the fourth wall, the second process cartridge being arranged between the third wall and the fourth wall;

    a waste toner cartridge arranged between the first wall and the second wall and configured to accommodate both the waste toner collected from the first photosensitive drum by the first drum-cleaning unit and the waste toner collected from the second photosensitive drum by the second drum-cleaning unit; and

    a conveying unit extending in a direction in which the first photosensitive drum and the second photosensitive drum are arranged, the conveying unit being configured to convey the waste toner collected by the first drum-cleaning unit and the waste toner collected by the second drum-cleaning unit,wherein the casing further includes;

    a first guiding wall arranged between the first wall and the third wall and configured to guide the first guide rail;

    a second guiding wall arranged between the fourth wall and the second wall and configured to guide the second guide rail;

    a first positioning plate receiving one end portion of the first process cartridge and the second process cartridge; and

    a second positioning plate receiving another end portion of the first process cartridge and the second process cartridge, the conveying unit being disposed between the first positioning plate and the second positioning plate in the array direction.

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