Image forming apparatus and cartridge mountable on the same

1. A cartridge detachably mountable to a main body of an image forming apparatus, the main body including: a fixing portion that includes a heating rotation member and that heat-fixes a toner image on a sheet; and a mounting portion on which the cartridge is mounted, the fixing portion including a fixing shutter configured to be movable between a first position where a part of the heating rotation member is covered and a second position where the part of the heating rotation member is exposed, the fixing shutter including a force receiving portion configured to receive a force for causing the fixing shutter to move from the first position to the second position,

the cartridge comprising:

a photosensitive member;

a frame configured to support the photosensitive member so that the photosensitive member is rotatable;

a photosensitive member shutter connected to the frame so as to be movable between a covering position where a part of the photosensitive member is covered and an exposure position where the part of the photosensitive member is exposed; and

a pressing portion configured to press the force receiving portion of the fixing shutter while the cartridge is being mounted on the mounting portion to move the fixing shutter from the first position to the second position, the pressing portion being provided in the photosensitive member shutter.

2. The cartridge according to claim 1 , wherein in a case where the photosensitive member shutter is located at the exposure position, the pressing portion is disposed on a downstream side of the frame in a mounting direction in which the cartridge is mounted on the mounting portion.

3. The cartridge according to claim 2 ,

wherein the main body further includes a regulating member configured to be movable between a regulating position where a movement of the fixing shutter from the first position to the second position is regulated and a non-regulating position where the movement of the fixing shutter from the first position to the second position is not regulated,

in a case where the force receiving portion is a first force receiving portion, the regulating member includes a second force receiving portion that receives a force for the regulating member to move from the regulating position to the non-regulating position, and

in a case where the pressing portion is a first pressing portion, the photosensitive member shutter includes a second pressing portion that presses the second force receiving portion of the regulating member while the cartridge is being mounted on the mounting portion.

4. The cartridge according to claim 1 , wherein in a case where the force receiving portion of the fixing shutter is a first force receiving portion, the cartridge includes a second force receiving portion configured to receive a force for causing the photosensitive member shutter to move from the covering position to the exposure position by contacting with a contact portion of the main body while the cartridge is being mounted on the mounting portion.

5. An image forming apparatus comprising:

a cartridge including a photosensitive member, a frame configured to support the photosensitive member so that the photosensitive member is rotatable, a photosensitive member shutter connected to the frame so as to be movable between a covering position where a part of the photosensitive member is covered and an exposure position where the part of the photosensitive member is exposed, and a pressing portion provided in the photosensitive member shutter; and

a main body including a fixing portion that includes a heating rotation member and that heat-fixes a toner image on a sheet, and a mounting portion on which the cartridge is detachably mounted,

the fixing portion including a fixing shutter configured to be movable between a first position where a part of the heating rotation member is covered and a second position where the part of the heating rotation member is exposed,

the fixing shutter including a force receiving portion configured to receive a force for causing the fixing shutter to move from the first position to the second position,

wherein while the cartridge is being mounted on the mounting portion, the pressing portion of the cartridge presses the force receiving portion of the fixing shutter to move the fixing shutter from the first position to the second position.

6. The image forming apparatus according to claim 5 , wherein in a case where the photosensitive member shutter is located at the exposure position, the pressing portion is disposed on a downstream side of the frame in a mounting direction in which the cartridge is mounted on the mounting portion.

7. The image forming apparatus according to claim 6 ,

wherein in a case where the force receiving portion is a first force receiving portion, the main body includes a regulating member configured to be movable between a regulating position where a movement of the fixing shutter from the first position to the second position is regulated and a non-regulating position where the movement of the fixing shutter from the first position to the second position is not regulated, the regulating member including a second force receiving portion configured to receive a force for the regulating member to move from the regulating position to the non-regulating position, and

in a case where the pressing portion is a first pressing portion, the photosensitive member shutter includes a second pressing portion configured to press the second force receiving portion of the regulating member to move the regulating member from the regulating position to the non-regulating position while the cartridge is being mounted on the mounting portion.

8. The image forming apparatus according to claim 5 , wherein in a case where the force receiving portion of the fixing shutter is a first force receiving portion, the cartridge includes a second force receiving portion configured to receive a force for causing the photosensitive member shutter to move from the covering position to the exposure position, and

wherein the main body includes a contact portion configured to contact with the second force receiving portion of the cartridge for applying the force to the second force receiving portion while the cartridge is being mounted on the mounting portion, so that the photosensitive member shutter is moved from the covering position to the exposure position.