Abstract: An image forming apparatus includes a fixing unit having a first shielding member configured to change an opening width of a first opening with respect to a longitudinal direction, a second shielding member configured to change an opening width of a second opening with respect to the longitudinal direction, and a controller that controls, on the basis of an output of a detector and size information of the recording material, the opening widths of the first opening and the second opening, so as to correspond to widths of non-passing portions of the recording material in the nip, by moving the first shielding member and the second shielding member in the longitudinal direction, respectively, when the recording material, having a size other than the maximum size, is inserted into the fixing unit.

Abstract: An image forming apparatus including a facing portion provided at a position facing a surface of an image bearing member that corresponds to a portion between a transfer unit and a cleaning unit, wherein a first space for conveying the recording material from the transfer unit to the fixing unit, and a second space between the surface of the image bearing member and the facing portion are formed in the image forming apparatus, and wherein the image forming apparatus includes a block member positioned in the second space and having one end side fixed to the facing portion on a side closer to the first space, the block member being configured to block a flow of an air current, the block member having the other end side in contact with the image bearing member.

Abstract: An image forming apparatus includes an LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out with the LED unit in the retracted position.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

Abstract: An image forming apparatus includes a fixing unit including a heater, an air blowing portion, a first opening, a first shielding member changing an opening width of the first opening with respect to a longitudinal direction, a second opening, a second shielding member changing an opening width of the second opening with respect to the longitudinal direction, a detecting portion detecting a deviation amount of the recording material with respect to a widthwise direction, and a controller controlling, on the basis of an output of the detecting portion and size information of the recording material, the opening widths of the first and second openings so as to be different from each other by moving the first and second shielding members, respectively.

Abstract: A detection unit includes a first contact member that comes into contact with a surface of a recording material and a second contact member that comes into contact with the other surface of the recording material, and the first contact member and the second contact member face each other and are capable of nipping the recording material. The first contact member and the second contact member are movable in a direction in which the first contact member and the second contact member nip the recording material. The first contact member and the second contact member are rotatable about an axial line that extends in a direction in which the recording material is conveyed.

Abstract: The detection unit includes a first contact member, which comes into contact with a first surface of a recording material and a second contact member, which comes into contact with a second surface of the recording material, the first contact member and the second contact member being disposed so as to oppose each other thus being capable of nipping the recording material, and the first contact member and the second contact member are movable in a direction in which the first contact member and the second contact member nip the recording material, and is rotatable about an axis line extending in a predetermined direction, the predetermined direction being orthogonal to the direction in which the first contact member and the second contact member are movable and being orthogonal to a conveyance direction of the recording material.

Abstract: An image forming apparatus includes an LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out with the LED unit in the retracted position.

Abstract: A biasing member is configured to provide a pressing member with a biasing force acting to bias the pressing member against a detecting portion before the pressing member receives a reaction force from the detecting portion when an opening/closing member is closed. A support portion receives the reaction force acting on the pressing member from the detecting portion while the opening/closing member is closed, and the pressing member maintains an operation state independently with respect to the detecting portion while the opening/closing member is closed.

Abstract: An image forming apparatus includes an LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out with the LED unit in the retracted position.

Abstract: An image forming apparatus includes an LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out with the LED unit in the retracted position.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

Abstract: An image forming apparatus includes an LED unit capable of being in an exposing position or a retracted position, and a cartridge capable of being inserted into or pulled out with the LED unit in the retracted position.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

Abstract: A biasing member 214 is configured to provide a pressing member 113 with biasing force acting to bias the pressing member 113 against a detecting portion 111 before the pressing member 113 receives reaction force from the detecting portion 111 when an opening/closing member 101 is closed. The support portion 113a receives reaction force acting to the pressing member 113 from the detecting portion 111, while the opening/closing member 101 is closed, and the pressing member 113 maintains an operation state independently with respect to the detecting portion 111, while the opening/closing member 101 is closed.

Abstract: A stacking device includes: a first stacking portion having a stacking surface on which a sheet is stacked; a widthwise direction regulating unit, provided movably relative to the first stacking portion in a widthwise direction of the sheet, for regulating a widthwise position of the sheet stacked on the stacking surface; a second stacking portion provided rotatably relative to the first stacking portion between a first position and a second position. The second stacking portion is overlaid on the first stacking portion at the first position and supports, at the second position, an upstream portion of the sheet with respect to a feeding direction of the sheet fed by a sheet feeding unit. The second stacking portion is provided with a cut-away portion to avoid interference with the widthwise direction regulating unit when rotates between the first position and the second position.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

Abstract: The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.