Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHidehiro Ushiozu, Yuji Mitsui, Keita Nakajima, Koji Miwa
Life of this patent
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Abstract
The image forming apparatus having LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out along the LED unit in the retracted position.
Claims17
An image forming apparatus that forms an image on a recording medium in a state where a cartridge having a photosensitive drum is detachably mounted to a main body of said image forming apparatus, comprising:
- a light emitting device unit having a light emitting device and a lens, the light emitting device having a plurality of light emitting elements provided in a longitudinal direction of the photosensitive drum for emitting in accordance with image information to expose the photosensitive drum in accordance with the image information, and the lens condensing light emitted from the light emitting elements for exposing the photosensitive drum;
- and
- a light emitting unit supporting member that supports the light emitting unit so that the light emitting unit that is movable between an exposing position and a retracted position, the exposing position being a position for exposing the photosensitive drum via the lens as the light emitting elements emit and that the retracted position being a position at which the light emitting unit is retracted from the exposing position,
- wherein the cartridge is capable of being inserted into or pulled out from the main body in the longitudinal direction of the photosensitive drum along the light emitting unit in the retracted position.
An image forming apparatus for forming an image on a recording medium comprising a mounted portion that can mount a cartridge to a main body of the image forming apparatus by inserting the cartridge in the direction substantially parallel to the axis of a photosensitive drum, the cartridge having the photosensitive drum and an integrated set of a first frame member and a second frame member facing the photosensitive drum;
- an exposure device having light emitting elements arrayed in a longitudinal direction of the photosensitive drum for exposing the photosensitive drum between the first frame member and the second frame member;
- and
- an exposure device supporting member for supporting the exposure device, the exposure device supporting member protruding from the mounted portion toward a space between the first frame member and the second frame member from the viewpoint of the axis of the photosensitive drum, wherein
- the exposure device supporting member has a first contacting portion that can be in contact with the first frame member and a second contacting portion that can be in contact with the second frame member when the cartridge is mounted to the mounted portion.
An image forming apparatus for forming an image on a recording medium comprising:
- a mounted portion that can mount a cartridge to the main body of the image forming apparatus by inserting the cartridge in a direction substantially parallel to the axis of a photosensitive drum, the cartridge having the photosensitive drum and an integrated set of a first frame member and a second frame member disposed across the photosensitive drum;
- an exposure device for exposing the photosensitive drum from beneath between the first frame member and the second frame member;
- and
- a guiding member protruding from the mounted portion toward a space between the first frame member and the second frame member from the viewpoint of the axis of the photosensitive drum, and having a first contacting portion that can be in contact with the first frame member and a second contacting portion that can be in contact with the second frame member when the cartridge is mounted to the mounted portion,
- wherein the first contacting portion and the second contacting portion are disposed between the first frame member and the second frame member, and have a part that can be in contact with the cartridge at a position below the center of gravity of the cartridge and a part that can be in contact with the cartridge at a position above the center of gravity of the cartridge when the cartridge is mounted to the mounted portion.
Dependencies are inferred from the claim text.