Loosely mounted outer sleeve member with biasing means
AssigneeMinolta Camera Kabushiki Kaisha
InventorsYuji Enoguchi, Masashi Yamamoto, Toshiya Natsuhara
Life of this patent
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Abstract
A developing device adjoins a rotatably arranged electrostatic latent image support member, and is internally provided with a rotatably disposed developing roller confronting the electrostatic latent image support member, a cylindrically formed flexible filmy or outer sleeve member having a peripheral length longer than that of the developing roller and loosely mounted around it, a couple of first members for biasing the filmy member against the developing roller to form a slack of the filmy member at a location confronting the electrostatic latent image support member, and a second member for forming a toner layer on entire external surface of the filmy member.
Claims12
A developing device disposed adjacently to a rotatably arranged electrostatic latent image support member, which comprises:
- a rotatably disposed developing roller confronting said electrostatic latent image support member;
- a cylindrically formed flexible outer sleeve member having a peripheral length longer than that of said developing roller and loosely mounted therearound;
- first means for biasing said outer sleeve member against said developing roller to form a slack of said outer sleeve member at a location confronting said electrostatic latent image support member;
- and
- second means for forming a toner layer on external surface of said outer sleeve member.
A developing device disposed adjacently to a rotatably arranged electrostatic latent image support member, which comprises:
- a rotatably disposed developing roller confronting said electrostatic latent image support member;
- a cylindrically formed flexible outer sleeve member having a peripheral length longer than that of said developing roller and loosely mounted therearound;
- first means for bringing said outer sleeve member partly into contact with said developing roller to define a space between said developing roller and said outer sleeve member at a location confronting said electrostatic latent image support member so that an external peripheral surface of the outer sleeve member covering said space may be brought into contact with said electrostatic latent image support member;
- and
- second means for forming a thin layer of charged toner on external surface of said outer sleeve member through contact therewith, said outer sleeve member being caused to rotate together with rotation of said developing roller.
Dependencies are inferred from the claim text.