Image forming apparatus having heat dissipation
AssigneeCanon Kabushiki Kaisha
InventorYoshiro Nishino
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image bearing member, a developing device including a developer container and a developer carrying member, a mounting portion, a moving mechanism, a cover member, a wall member, a first seal member, a second seal member, and a fan. When the developing device is in a separated position, neither the first seal member or the second seal member contacts the wall member. When the developing device is in a developing position, both the first seal member and the second seal member contact the wall member. When the developing device is in the developing position, a space for permitting passing of an airflow by the fan is formed along a mounting direction by the cover member, the wall member, the first seal member, and the second seal member.
Claims20
An image forming apparatus comprising:
- an image bearing member;
- a developing device which includes a developer container configured to accommodate a developer containing toner and a carrier and which includes a developer carrying member configured to carry the developer for developing an electrostatic image formed on said image bearing member;
- a mounting portion configured to mount said developing device in said image forming apparatus;
- a moving mechanism configured to move said developing device mounted in said mounting portion from a separated position where said developing device is separated from said image bearing member to a developing position where the electrostatic image formed on said image is developed;
- a cover member provided in said mounting portion along a mounting direction in which said developing device is mounted in said mounting portion and configured to cover said developer container by being mounted on said developer container;
- a wall member provided along the mounting direction, wherein when said developing device is moved from the separated position to the developing position by said moving mechanism, said wall member is not moved together with said developing device;
- a first seal member;
- a second seal member provided downstream of said first seal member with respect to a movement direction in which said developing device is moved from the separated position to the developing position by said moving mechanism;
- and
- a fan configured to generate an airflow for cooling said developing device,
- wherein when said developing device is in the separated position, neither said first seal member nor said second seal member contacts said wall member, and
- when said developing device is in the developing position, both said first seal member and said second seal member contact said wall member, and
- wherein when said developing device is in the developing position, a space for permitting passing of the airflow by said fan is formed along the mounting direction by said cover member, said wall member, said first seal member, and said second seal member.
An image forming apparatus comprising:
- an image bearing member;
- a developing device which includes a developer container configured to accommodate a developer containing toner and a carrier and which includes a developer carrying member configured to carry the developer for developing an electrostatic image formed on said image bearing member;
- a mounting portion configured to mount said developing device in said image forming apparatus;
- a moving mechanism configured to move said developing device mounted in said mounting portion from a separated position where said developing device is separated from said image bearing member to a developing position where the electrostatic image formed on said image is developed;
- a cover member provided in said mounting portion along a mounting direction in which said developing device is mounted in said mounting portion and configured to cover said developer container by being mounted on said developer container;
- a wall member provided along the mounting direction, wherein when said developing device is moved from the separated position to the developing position by said moving mechanism, said wall member is not moved together with said developing device;
- a seal member provided on said cover member;
- and
- a fan configured to generate an airflow for cooling said developing device,
- wherein when said developing device is in the developing position, a space for permitting passing of the airflow by said fan is formed along the mounting direction by said cover member, said wall member, and said seal member.
Dependencies are inferred from the claim text.