Drum unit for supporting developer cartridge that includes developing roller
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United States of America Patent
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-
Apr 5, 2016
Grant Date -
Nov 12, 2015
app pub date -
Jul 20, 2015
filing date -
Dec 26, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image forming apparatus includes an apparatus body, a drum unit which holds photosensitive drums in parallel, a developing cartridge which is detachably mounted in the drum unit, a translation member which is provided in the apparatus body to be movable linearly, a shaft which is provided on the tandem photosensitive drum unit for each developing cartridge; and a pivoting member which is rotatably supported by the shaft. The pivoting member includes an abutting portion which is provided on one side to abut the translation member, a pressing portion which is provided on the other side, and is configured to press a predetermined portion of the developing cartridge in a direction in which the developing roller is separated from the photosensitive drum; and a spring portion which applies a biasing force in a direction in which the pressing portion is separated from the predetermined portion.
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