An image forming apparatus including a frame and a cartridge attachable thereto. The cartridge includes a casing, a storage medium including an electrical contact surface, and a holder positioned at one side of the casing in a first direction. The holder includes a first outer surface holding the electrical contact surface. The first outer surface is movable relative to the casing in a second direction. The frame includes first and second guide surfaces, an electrical contact configured to contact the electrical contact surface, and a support surface. A gap distance between the first and second guide surfaces in the second direction is reduced from a first distance to a second distance in an inserting direction. The electrical contact is positioned farther from an insertion opening of the frame than the first guide surface. A gap distance between the electrical contact and the support surface is greater than the second distance.

An image forming apparatus includes feeding, conveying, and separating members, and detecting, image forming, and control units. The feeding member feeds a recording material placed on a tray. The separating member and the conveying member separate recording materials at a nip. The detecting unit detects that the recording materials have been fed to the nip. The image forming unit forms an image on fed recording material. The control unit switches between a first and second control. Under the first control, the feeding member starts feeding a recording material placed on the tray, and ends feeding before a recording material trailing end passes through the feeding member. Under the second control, the feeding member starts feeding a recording material placed on the tray, and ends feeding after a recording material trailing end passes through the feeding member when the detection unit detects that the recording materials are fed to the nip.

An image forming apparatus includes: a reconveying unit including a reconveying roller; and a second transmission mechanism. The second transmission mechanism transmits a drive force to the reconveying roller and includes: an input gear; an output gear; an intermediate gear including first and second gears; and first and second swinging gears. The first toothless part of the first gear and the second toothless part of the second gear are provided at such a position that, when the intermediate gear is rotated by a drive force transmitted from the input gear through the second swinging gear while the second swinging gear meshes with the second toothed part of the second gear and the output gear meshes with the first toothed part of the first gear, the first toothless part reaches a position confronting the output gear and then the second toothless part reaches a position confronting the second swinging gear.

An image forming apparatus is configured such that in a case where images are to be formed on a first surface of a preceding sheet, on a first surface of a succeeding sheet fed to the first conveyance path succeeding to the preceding sheet and on a second surface of the preceding sheet, a first conveyance member is stopped without reversing the preceding sheet to a second conveyance path in a case where the image has been formed on the first surface of the preceding sheet and permission of preparing the image to be formed on the first surface of the succeeding sheet is not issued yet. The first conveyance member restarts conveyance of the preceding sheet to the second conveyance path based on timing when an image forming unit starts preparing the image to be formed on the first surface of the succeeding sheet.

The present sheet conveying apparatus includes: a resist roller pair that corrects skew of a sheet conveyed from a sheet supplying unit; and a guide portion disposed at an upstream side relative to the resist roller pair in a sheet conveying direction, the guide portion including a first guide and a second guide disposed opposite to the first guide with a sheet conveying path therebetween, the second guide being located at a projection side of a curved portion formed in the sheet when a tip of the sheet is conveyed to a nip portion of the resist roller pair that is stopped, the second guide being divided into a plurality of divided guides in an axial direction of the resist roller pair, a flexible film being disposed to cover at least a portion of a space between the plurality of divided guides.

A sheet conveyance apparatus including an openable member, a first conveyance roller, a second conveyance roller, a holding member, an urging member, and a reduction portion is provided. The first conveyance roller is provided in an apparatus body, and the second conveyance roller is provided in the openable member. The holding member rotatably holds the second conveyance roller, and the urging member urges the holding member in a pressing direction. The reduction portion includes a swingable member provided in the openable member and an abut portion provided in the apparatus body, and reduces a force applied to the openable member by the urging member when opening or closing the openable member.

An image forming apparatus includes: a transfer unit configured to transfer a toner image to a recording medium at a transfer nip; a fuser unit configured to heat and pressurize at a fuser nip the recording medium to which the toner image has been transferred by the transfer unit, to fuse the toner image to the recording medium; and a pressing unit configured to press both edge portions of the recording medium in a width direction between the transfer nip and the fuser nip so that a central portion of the recording medium in the width direction becomes lower than the both edge portions of the recording medium in the width direction.

An image forming apparatus includes an image forming device, an image density detector, and an output change device configured to cause the image forming device to form a test toner image while cyclically changing a charging power based on a charging change pattern and a developing bias based on a developing change pattern, generate an image density fluctuation pattern of the test toner image in a rotation direction of the latent image bearer, generate a writing change pattern to cyclically change a power of latent image writing based on the image density fluctuation pattern of the test toner image and one of the charging change pattern and a correlative pattern correlated with the charging change pattern. The output change device is configured to cyclically change the power of latent image writing based on the writing change pattern during image formation according to a user command.

An image forming apparatus includes a first removable member that includes an image carrying member and that is removably supported with respect to a body of the image forming apparatus; a first guide portion that is provided at a lower surface of the first removable member; a second guide portion that is provided at the first removable member; a first guiding portion that is provided at the body of the image forming apparatus and supports the first guide portion when the first removable member is placed on the first guiding portion; and a second guiding portion that is provided at the body of the image forming apparatus, in which, when the first removable member moves in a mounting direction from a state in which the first guide portion is supported by the first guiding portion, the second guiding portion contacts the second guide portion and guides the second guide portion.

An image forming apparatus includes an image carrier that holds an image, which is formed by developing a latent image and which is transferred onto a recording medium, a developing device that is disposed adjacent to the image carrier and that develops the latent image, a light-reflection-type sensing unit that is disposed below the developing device in a vertical direction and that detects the image on the image carrier, and a guiding member that guides the recording medium, which is transported between the developing device and the sensing unit, and that covers an upper side of the sensing unit in the vertical direction in a state where a space is ensured on an optical path of the sensing unit.