Provided is an electrophotographic apparatus which uses a light emitting diode array as an exposure unit and exposes a photosensitive member to a quantity of light from the LED array whose average light quantity satisfies 0.8×Emin or more and 1.1×Emin or less on condition that a normalized radius of curvature R of a normalized graph derived from the E-V curve of the photosensitive member has a minimum value of 0.24 or less, and a light quantity at the minimum value of the normalized radius of curvature R is Emin [μJ/cm.sup.2]. This electrophotographic apparatus prevents both the occurrence of image unevenness due to light quantity variation among the elements of the LED array and the generation of ghost images due to a rest potential.

A sheet conveyance apparatus includes a conveyance unit and first and second moving members respectively including first and second projection portions. When the first projection portion contacts a sheet, the first moving member is moved from a first projection position, where the first projection portion projects to a conveyance path, to a first retraction position, where the first projection portion is retracted from the first projection position. When the first moving member moves to the first retraction position, the second moving member moves from a second retraction position, where the second projection portion is retracted from the second projection position, to a second projection position, where the second projection portion projects to the conveyance path. When a sheet pushes the second projection portion, the second moving member is moved from the second projection position to the second retraction position with the first moving member located at the first retraction position.

An image forming apparatus includes a placing portion onto which a recording medium having an image formed is to be placed, and an opening-closing member that covers an opening provided at least at one side face of the placing portion and automatically opens the opening with a predetermined timing.

An image forming apparatus includes a transfer device to transfer an unfixed toner image to a print medium, a fixing device located along a conveyance path of the print medium, and a gloss applying device. The unfixed toner image includes clear toner that is associated with a gloss image to be formed. The gloss applying device receives the print medium including the unfixed toner image, to fix the unfixed toner image to the print medium by applying heat and pressure, and to cool the heated toner image to form the gloss image.

According to some examples, a skew detection device comprises a first roller rotatable around a first axis, a second roller rotatable around a second axis, a first sensor, and a second sensor. The first sensor measures a first rotation parameter from the first roller and the second sensor measures a second rotation parameter from the second roller. A movement of a print media over the device rotates the first contact roller and the second roller, and a controller determines a skew of the print media based on the first and second rotation parameters captured by the first sensor and the second sensor.

An example device includes: a print engine including a fuser; an ambient temperature sensor; a memory storing a plurality of curves that relate, for given respective ambient temperatures, respective time periods for the fuser to heat to a fusing temperature, to respective factors associated with cooling of the fuser; and a processor The processor is to: detect a current ambient temperature using the ambient temperature sensor; select a curve, from the plurality of curves, using the current ambient temperature; determine a current factor associated with cooling of the fuser; and control the fuser to heat to the fusing temperature based on a respective time period determined from the curve and the current factor associated with cooling of the fuser.

A container member includes a container body that contains a recording medium and that tilts with respect to a horizontal direction such that a position of a leading edge and a position of a trailing edge of the contained recording medium in a vertical direction differ from each other, and a curving unit that curves the recording medium that is contained in the container body when viewed in a front-rear direction of the recording medium.

An image forming apparatus includes: an image forming section that forms an image on a document; a first ejection section that ejects the document on which the image has been formed by the image forming section; an exterior portion which is movable and at least a part of which constitutes an exterior of the apparatus; an entrance portion that is exposed by movement of the exterior portion and that constitutes an entrance for the document to be transported to an image reading section that reads the image formed on the document; the image reading section that reads the image formed on the document transported after the entrance portion is exposed; and a second ejection section that ejects the document which has been read by the image reading section. An ejecting direction of the first ejection section, an ejecting direction of the second ejection section, and a moving direction of the exterior portion coincide with each other.

An image forming apparatus includes a main body including a display, a drum cartridge configured to be mounted to the main bod, a toner cartridge configured to be mounted to the drum cartridge, and a controller. The drum cartridge includes a photosensitive drum, a developing chamber configured to accommodate toner, and a drum memory. The toner cartridge includes a housing configured to accommodate the toner. The controller is configured to store, in the drum memory, a cumulative toner receiving amount which is a cumulative amount of the toner supplied from the toner cartridge and received in the developing chamber, a cumulative toner consumption amount which is a cumulative amount of the consumed toner, and a cumulative drum printing sheet number which is a number of sheets on which an image is formed.

A control device includes a memory configured to store variable data including a plurality of page images each including a variable region where an image is variable for each page and a non-variable region including the same image irrespective of the page and a display processing section configured to cause a display device to display a printing preview screen for the variable data. The display processing section causes the display device to display the printing preview screen that displays one or a plurality of row images in which the plurality of page images are arranged in a row in a first direction corresponding to the width direction of a printing medium.