US Patent No. 9,285,765

DEVELOPER SUPPLY CARTRIDGE WITH SHUTTER PORTION FOR OPENING AND CLOSING A SUPPLY OPENING


Patent No. 9,285,765
Issue Date March 15, 2016
Title Developer Supply Cartridge With Shutter Portion For Opening And Closing A Supply Opening
Inventorship Osamu Anan, Susono (JP)
Teruhiko Sasaki, Mishima (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,285,765

1. A developer supply cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image
on a recording material by developer, said developer supply cartridge comprising:
an accommodating portion, provided with a supply opening for permitting discharge of developer, for accommodating the developer;
a shutter portion movable between a closed position where the supply opening is closed from an outside of said accommodating
portion and an open position where the supply opening is open to the outside; and

a movable portion for moving said shutter portion, wherein said movable portion is movable between a first position where
said shutter portion is positioned in the closed position and a second position where said shutter portion is positioned in
the open position, and

wherein said movable portion in the first position is engaged with an engaging portion so that said movable portion is moved
with the movement of said developer supply cartridge and then said movable portion is positioned in the second position when
said developer supply cartridge reaches a mounting position, the mounting position being a position where said developer supply
cartridge is mounted to the main assembly,

wherein said movable portion performs a preventing operation for preventing movement thereof to the first position when said
movable portion is positioned in the second position during mounting of said developer supply cartridge to the main assembly,
and

wherein, said movable portion is moved from the second position to a preventing position in the preventing operation, the
preventing position being a position where said shutter portion is positioned in the open position and said movable portion
is located at a position different from the second position.