Abstract: A holding member includes a first side wall portion and a second side wall portion, and a part of a surface of a substrate on a side opposite from a mounting surface and a holding member are fixed to each other by an adhesive. In the first side wall portion, an inserting hole is disposed opposing a corner portion as of the substrate in a widthwise direction of the substrate and also, in the second side wall portion, another inserting hole is disposed opposing another corner portion of the substrate.

Abstract: An exposure head configured to expose a photoreceptor includes a substrate having a plurality of light emitting portions, a lens array having a plurality of lenses that condense light emitted from the light emitting portions onto the photoreceptor, and a holder that holds the substrate and the lens array. The holder has an opposing surface including an opening into which the lens array is inserted and facing the photoreceptor in an optical axis direction of the lens. The opposing surface has a contacting surface on which a cleaning rod cleaning a light exit surface of the lens array abuts. The holder includes a sealing agent that seals a gap between a side wall of the lens array and an edge of the opening along a longitudinal direction of the holder, and a groove formed in the opposing surface between the opening and the contacting surface. The sealing agent is applied between the groove and the side wall.

Abstract: A cleaning rod includes a rod-like member, a slidable portion which is provided on a free end side of the rod-like member with respect to a direction in which the cleaning rod is inserted and which is slidable on a light emergent surface of a lens of an image forming apparatus, and a restricting portion configured to restrict movement of the slidable portion in a direction away from the light emergent surface with respect to an optical axis direction by contacting the holder at each of free ends of opposing wall portions of a holder of the image forming apparatus from a side opposite from a side where a photosensitive member of the image forming apparatus is provided with respect to the optical axis direction in a state in which the slidable portion contacts the light emergent surface.

Abstract: A holding member includes a first opposing portion (first inner wall surface) and a second opposing portion (second inner wall surface) which oppose side wall surfaces of a lens array. Side wall surfaces of the lens array on opposite end sides with respect to a longitudinal direction of the lens array are exposed from opposite ends of the first opposing portion and opposite ends of the second opposing portion.

Abstract: In a configuration in which a metal holder is supported by a resin member, the metal holder cannot be grounded, so that electricity may be discharged from the charged holder to a substrate held by the holder. The holder is provided with a pin to determine a position of the holder with respect to a photosensitive member. A conductive member that is made of metal and is grounded, is brought into contact with the pin to thereby enable the holder to be grounded through the pin.

Abstract: A cleaning rod includes a rod-like member, a slidable portion which is provided on a free end side of the rod-like member with respect to a direction in which the cleaning rod is inserted and which is slidable on a light emergent surface of a lens of an image forming apparatus, and a restricting portion configured to restrict movement of the slidable portion in a direction away from the light emergent surface with respect to an optical axis direction by contacting the holder at each of free ends of opposing wall portions of a holder of the image forming apparatus from a side opposite from a side where a photosensitive member of the image forming apparatus is provided with respect to the optical axis direction in a state in which the slidable portion contacts the light emergent surface.

Abstract: A holding member 505 includes a first side wall portion 505a and a second side wall portion 505b, and a part of a surface 803b of a substrate 502 on a side opposite from a mounting surface 803 and a holding member 505 are fixed to each other by an adhesive. In the first side wall portion 505a, an inserting hole 801 opposing a corner portion 502 as of the substrate 502 in a widthwise direction of the substrate 502, and also, in the second side wall portion 505b, an inserting hole 801 opposing a corner portion 502bs of the substrate 502.

Abstract: In an image forming apparatus including an optical print head, a length of a cable from a regulating portion to a connecting portion in a state where the connecting portion is connected to a connector is set to a length that enables the connector to be located on a front side of an opening when the optical print head moves to a pull-out position in the state where the connecting portion is connected to the connector.

Abstract: An optical scanning apparatus includes a light source, a light deflecting unit, an optical member, a casing, a cover member, and a detecting unit. The cover member is provided with a first opening permitting passage of a light beam emitted from the light source, a second opening permitting passage of the light beam deflected by the deflecting unit, and third and fourth openings which are provided in positions on a side opposite from the first and second openings with respect to the deflecting unit. Through the third opening, an outflow of the air from the cover member by rotation of said deflecting unit is relatively high. Through the fourth opening, an inflow of the air into the cover member by rotation of said deflecting unit is relatively high. The detecting unit is provided at a position where the air flow blowing through the third opening hits the detecting unit.

Abstract: An image forming apparatus includes a print head to expose a drum to light, a first supporting unit supporting the print head and to move to mounting and extraction positions, a cable to supply a print head driving signal, an abutting portion, and a second supporting unit having a holding unit to hold the cable and to support the first supporting member. When the print head moves to the mounting position from the extraction position in a state where the cable is connected to the print head, the abutting portion abuts on the cable in one area between a holding unit held portion and a print head connected portion and moves the one area in a direction in which the first supporting unit moves to the mounting position to form in the one area a curved area that is warped and curved toward the mounting position from the extraction position.

Abstract: A cleaning member that is used in an image forming apparatus and that is inserted from outside the image forming apparatus, the apparatus including a holding body that holds a substrate on which light emitting elements that expose a photosensitive drum are aligned and that holds lenses, the cleaning member including a rod-shaped rhabdoid formed of resin, a cleaning portion provided in the rhabdoid to clean a light emission surface of each lens, the cleaning portion moving together with the rhabdoid inserted in the image forming apparatus and opposing the light emission surface in an optical axis direction of the lens, and a magnet provided on the rhabdoid, the magnet emitting magnetic force that generates force drawing the holding body thereto so that the cleaning portion continues to contact the light emission surface.

Abstract: An image forming apparatus includes a photosensitive drum to rotate as to an apparatus main body, a print head having a connector and a light emitting element, a movement mechanism to move the print head between an exposing position and a retracted position, a support part rotatable and to support the movement mechanism, a cable, and an abutting portion. The cable supplies drive signals for driving the light emitting element to the print head. The cable extends toward an opposite side of the connector and is bent toward one direction or another direction of the support part. The abutting portion is provided to the support part, and abuts the cable bent portion in a direction from the retracted position toward the exposing position to cause the cable to flex between a connected portion to the connector and the bent portion, when the print head is at the retracted position.

Abstract: A cleaning rod includes a rod-like member, a slidable portion which is provided on a free end side of the rod-like member with respect to a direction in which the cleaning rod is inserted and which is slidable on a light emergent surface of a lens of an image forming apparatus, and a restricting portion configured to restrict movement of the slidable portion in a direction away from the light emergent surface with respect to an optical axis direction by contacting the holder at each of free ends of opposing wall portions of a holder of the image forming apparatus from a side opposite from a side where a photosensitive member of the image forming apparatus is provided with respect to the optical axis direction in a state in which the slidable portion contacts the light emergent surface.

Abstract: In a configuration in which a metal holder is supported by a resin member, the metal holder cannot be grounded, so that electricity may be discharged from the charged holder to a substrate held by the holder. The holder is provided with a pin to determine a position of the holder with respect to a photosensitive member. A conductive member that is made of metal and is grounded, is brought into contact with the pin to thereby enable the holder to be grounded through the pin.

Abstract: An image forming apparatus includes a drum unit, an optical print head, a moving mechanism, a moving mechanism supporting member, a main assembly, a flexible flat cable, a first cover portion made of a resin material and provided in the supporting member so as to cover a first portion of a cutting plane of the opening, the first portion opposing one surface of the flexible flat cable, and a second cover portion made of a resin material and provided in the supporting member so as to cover a second portion of the cutting plane of the opening, the second portion opposing the other surface of the flexible flat cable.

Abstract: An image forming apparatus that includes a cover. By rotation of the cover from a closed position toward an open position, a pressing portion urges a portion-to-be-urged, and a slidable portion is slid (moved) from one end side toward the other end side with respect to a rotational axis direction of a photosensitive drum by the urging, so that an optical print head moves from an exposure position toward a retracted position.

Abstract: Disclosed is an image forming apparatus, including an optical scanning device, wherein the optical scanning device includes: a holding member configured to integrally hold a first cleaning member and a second cleaning member; a first guide member configured to guide a movement of the holding member; a second guide member configured to guide a movement of the holding member; a first groove portion; a second groove portion, and wherein when the holding member moves from end portions of the first guide portion and the second guide portion to an opposite side with respect to a central portion side and a first engaging portion and a second engaging portion of the holding member respectively pass in the first groove portion and the second groove portion, engagements of the first engaging portion and the second engaging portion with the first guide portion and the second guide portion are released.

Abstract: An image forming apparatus includes a third link portion which is rotatably connected to said first link portion at a position between said first connecting portion and said first moving portion so that said first moving portion and said second moving portion are moved toward said drum unit by rotation of said first link portion about said first connecting portion as a rotation shaft and by rotation of said second link portion about said second connecting portion as a rotation shaft in interrelation with slide of said slidable portion, and which is rotatable relative to the apparatus main assembly. The third link portion is out of contact with the optical print head at a portion corresponding to an end portion on the optical print head side.

Abstract: An image forming apparatus which includes an optical scanning device, wherein the optical scanning device includes: a holding member configured to integrally hold a first cleaning member and a second cleaning member; a first guide member configured to guide a movement of the holding member; and a second guide member configured to guide a movement of the holding member. A first protruding portion protrudes upward from an upper surface of the holding member and is provided at a position closer to an end portion of the holding member than the first cleaning member, and a second protruding portion protrudes upward from the upper surface of the holding member and is provided at a position closer to an end portion of the holding member than the second cleaning member. The first protruding portion and second protruding portion are provided for bending the holding member.

Abstract: An image forming apparatus includes a cover pivotable on a body to close an opening at a closed position and open the opening at an open position, first and second replacement units having photosensitive drums, an optical print head pivotable in one direction, a spring, and a stopper. The spring applies, to the optical print head, a force for allowing the optical print head to pivot toward the one direction so that a movement of the optical print head with a pivotal movement of the cover from the open position to the closed position is prevented from being inhibited by the first developing cartridge. The optical print head, having the force applied the optical print head by the spring, so that movement of the optical print head with pivotal movement of the cover from the open to the closed position is prevented from being inhibited by the second developing cartridge.