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Electrophotographic image forming apparatus

An electrophotographic image forming apparatus with which a process cartridge having an electrophotographic photosensitive member is usable, the apparatus includes a transfer member contactable to the photosensitive member to transfer a toner image from the photosensitive member thereonto; a tray for carrying the cartridge, the tray being movable between a contact position in which the photosensitive member is contacted to the transfer member in a state that tray carries the cartridge and a spaced position in which the photosensitive member is spaced from the transfer member in the state that tray carries the cartridge; a supporting member for supporting the tray for movement in a tangent line direction which is parallel with a tangent line between the photosensitive member and the transfer member as seen in an axial direction of the photosensitive member between a first position for positioning the tray at the contact position and a second position which is retracted from the first position away from the transfer member in a perpendicular direction perpendicular to the axial direction and to the tangent line and in the tangent line direction to position the tray at the spaced position; a portion to be engaged; an engaging portion provided in the tray and engageable with the portion to be engaged to regulate movement of the tray in the tangent line direction when the tray is at the contact position, wherein the engaging portion is disengaged from the portion to be engaged after the electrophotographic photosensitive member is spaced from the transfer member by movement of the tray in the perpendicular direction in a state of engagement with the portion to be engaged, when the supporting member moves from the first position toward the second position.
Owner:CANON KK
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