Abstract: A sheet transport apparatus includes: a transport portion that transports a sheet; a skew correction portion against which a leading edge of the sheet transported by the transport portion abuts for skew correction, the skew correction portion moving to a position where the skew correction portion does not hinder the transport of the sheet after the skew correction; and a plurality of sheet abutting portions that is provided in the skew correction portion and against that the leading edge of the sheet transported by the transport portion abuts, the plurality of sheet abutting portions respectively including a resin member, and an abutting portion which is provided in the resin member and having an abrasion resistance higher than that of the resin member, and against which the leading edge of the transported sheet abuts.

Abstract: To enable not only releasing pressurization by a pressurization mechanism for pressurizing a belt thereby preventing a deformation therein but also easily and securely releasing the pressurization mechanism held in the pressure release state, thereby facilitating the installation operation of an apparatus. A pressurization mechanism for pressurizing a belt is in a released state prior to the use of the main body of the apparatus. Prior to the initial use of the main body, the pressurization of the pressurizing mechanism for the belt is exerted in linkage with a user operation of placing a recording material in a feed tray.

Abstract: To enable not only releasing pressurization by a pressurization mechanism for pressurizing a belt thereby preventing a deformation therein but also easily and securely releasing the pressurization mechanism held in the pressure release state, thereby facilitating the installation operation of an apparatus. A pressurization mechanism for pressurizing a belt is in a released state prior to the use of the main body of the apparatus. Prior to the initial use of the main body, the pressurization of the pressurizing mechanism for the belt is exerted in linkage with a user operation of placing a recording material in a feed tray.

Abstract: To enable not only releasing pressurization by a pressurization mechanism for pressurizing a belt thereby preventing a deformation therein but also easily and securely releasing the pressurization mechanism held in the pressure release state, thereby facilitating the installation operation of an apparatus. A pressurization mechanism for pressurizing a belt is in a released state prior to the use of the main body of the apparatus. Prior to the initial use of the main body, the pressurization of the pressurizing mechanism for the belt is exerted in linkage with a user operation of placing a recording material in a feed tray.

Abstract: To enable not only releasing pressurization by a pressurization mechanism for pressurizing a belt thereby preventing a deformation therein but also easily and securely releasing the pressurization mechanism held in the pressure release state, thereby facilitating the installation operation of an apparatus. A pressurization mechanism for pressurizing a belt is in a released state prior to the use of the main body of the apparatus. Prior to the initial use of the main body, the pressurization of the pressurizing mechanism for the belt is exerted in linkage with a user operation of placing a recording material in a feed tray.

Abstract: To enable not only releasing pressurization by a pressurization mechanism for pressurizing a belt thereby preventing a deformation therein but also easily and securely releasing the pressurization mechanism held in the pressure release state, thereby facilitating the installation operation of an apparatus. A pressurization mechanism for pressurizing a belt is in a released state prior to the use of the main body of the apparatus. Prior to the initial use of the main body, the pressurization of the pressurizing mechanism for the belt is exerted in linkage with a user operation of placing a recording material in a feed tray.

Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus. The apparatus includes movable first and second engageable members. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a first force receiving portion for receiving, from the first engageable member, a force for separating the drum and roller, a second force receiving portion for keeping the drum and roller spaced from each other and for receiving a force, from the second engageable member, for separating the first engageable member and the first force receiving portion. When the cartridge is transported while being in a mounted state, the second force receiving portion receives a force for separating the first engageable member and the first force receiving portion from each other from the second engageable member.

Abstract: To enable not only releasing pressurization by a pressurization mechanism for pressurizing a belt thereby preventing a deformation therein but also easily and securely releasing the pressurization mechanism held in the pressure release state, thereby facilitating the installation operation of an apparatus. A pressurization mechanism for pressurizing a belt is in a released state prior to the use of the main body of the apparatus. Prior to the initial use of the main body, the pressurization of the pressurizing mechanism for the belt is exerted in linkage with a user operation of placing a recording material in a feed tray 21.

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus. The apparatus includes a movable first engageable member and a movable second engageable member. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a first frame supporting the drum, a second frame supporting the roller, a first force receiving portion for receiving, from the first engageable member, a force for separating the drum and roller a second force receiving portion for keeping the drum and roller spaced from each other and for receiving a force, from the second engageable member, for separating the first engageable member and the first force receiving portion. When the cartridge is transported while being in a mounted state, the second force receiving portion receives a force for separating the first engageable member and the first force receiving portion from each other from the second engageable member.

Abstract: The image forming apparatus includes an endless belt, a first tensing member having a first and second end portions, wherein the first and second end portions of said first tensing member are positioned in a direction orthogonal to a direction in which said first tensing member guides movement of said endless belt, a guide member, and a second tensing member positioned next to said first tensing member on a downstream side in a belt rotation direction to said first tensing member and for putting said endless belt on with tension from an internal surface of said endless belt, wherein when said endless belt deviates toward a second end portion side, the first end portion of the first tensing member moves by said endless belt in a direction from an external surface of the belt to an internal surface of said endless belt, and wherein when the first end portion moves in a direction from an external surface of the belt to an internal surface of said endless belt, the first end portion moves in a direction away from