Patent ID: 9031453
Filing Date: 2015-05-12
Classification: G03G

Abstract:
1. A retainer device included in an image forming apparatus, the image forming apparatus comprising a unit detachably attached to the image forming apparatus, wherein the retainer device prevents the unit from dropping when detached from the image forming apparatus, comprising: a guide member disposed at a proximal side inside the apparatus to supportably guide the unit with respect to the image forming apparatus when the unit is detached from the image forming apparatus; and a stopper, disposed on the guide member, configured to contact the unit when the unit is moving in a direction separating from the image forming apparatus and to stop the unit from dropping from the image forming apparatus, wherein the guide member is switchable between a first separation regulating state, in which the guide member prevents the unit from detaching from the image forming apparatus, and a second guidable state, in which the guide member supports the unit, while guiding the unit, in the direction separating from the image forming apparatus when the unit is detached from the image forming apparatus.