An image formation apparatus includes an image bearing member on which an electrostatic latent image is formed and a developing agent bearing member configured to carry a developer used to develop the electrostatic latent image formed on the image bearing member. The image formation apparatus forms an image by using the electrostatic latent image formed on the image bearing member. The image formation apparatus further includes an obtaining unit configured to obtain the information about a rotation speed of the image bearing member and a rotation speed of the developing agent bearing member; a determination unit configured to determine, according to the obtained information, a color conversion table used to transfer and record the input image data; and an image formation unit configured to convert a signal of the input image data according to the determined color conversion table and form an image with the converted signal value.

An image forming apparatus include an operation mode determination section, a display section, an image determination section and a display controller. The operation mode determination section determines a current operation mode among a plurality of operation modes for executing an image forming processing. The display section displays an image. The image determination section determines an image indicating the operation mode determined by the operation mode determination section. The display controller displays an image determined by the image determination section and information for supporting an operation by a user relating to the image forming processing on the display section.

An image forming apparatus include an operation mode determination section, a display section, an image determination section and a display controller. The operation mode determination section determines a current operation mode among a plurality of operation modes for executing an image forming processing. The display section displays an image. The image determination section determines an image indicating the operation mode determined by the operation mode determination section. The display controller displays an image determined by the image determination section and information for supporting an operation by a user relating to the image forming processing on the display section.

An image forming apparatus, including: a light source including a plurality of light emitting points and configured to emit light beams; a photosensitive member configured to rotate in a rotation direction so that a latent image is formed thereon with the light beams; a rotary polygon mirror configured to rotate around a rotation axis and having a plurality of mirror faces each configured to deflect the light beams so that the photosensitive member is scanned with the light beams; a detector configured to detect temperature; and a correction unit configured to correct image data of an input image by using a deviation amount, in the rotation direction of the photosensitive member, of the light beams deflected by each of the plurality of mirror faces, wherein the correction unit obtains the deviation amount according to the temperature detected by the detector.

A light scanning apparatus including: a first holder attached to a housing and configured to hold a first laser light source; a second holder attached to the housing and configured to hold a second laser light source; and a lens to which the laser lights are first incident, wherein the first holder and the second holder are attached to the housing in mutually different positions in a rotation axis direction of a rotary polygon mirror and in an optical axis direction of the lens, so that a first incident light path from the first laser light source to the rotary polygon mirror is placed between a second incident light path from the second laser light source to the rotary polygon mirror and the lens, and the first holder and the second holder overlap one another in the rotation axis direction.

A light scanning apparatus including: a first holder attached to a housing and configured to hold a first laser light source; a second holder attached to the housing and configured to hold a second laser light source; and a lens to which the laser lights are first incident, wherein the first holder and the second holder are attached to the housing in mutually different positions in a rotation axis direction of a rotary polygon mirror and in an optical axis direction of the lens, so that a first incident light path from the first laser light source to the rotary polygon mirror is placed between a second incident light path from the second laser light source to the rotary polygon mirror and the lens, and the first holder and the second holder overlap one another in the rotation axis direction.

A lens unit according to one or more embodiments includes a lens plate member including a plurality of lenses arranged in a first direction; and a light block member provided facing the lens plate member and including a plurality of opening portions arranged in the first direction, the opening portions being provided in one-to-one correspondence with the lenses. A first positioning portion is formed at a first position in first direction of each of the lens plate member and the light block member. The first positioning portion of the lens plate member and the first positioning portion of the light block member align with each other and continuously extend in a second direction along an optical axis direction of the lenses.

A lens unit according to one or more embodiments includes a lens plate member including a plurality of lenses arranged in a first direction; and a light block member provided facing the lens plate member and including a plurality of opening portions arranged in the first direction, the opening portions being provided in one-to-one correspondence with the lenses. A first positioning portion is formed at a first position in first direction of each of the lens plate member and the light block member. The first positioning portion of the lens plate member and the first positioning portion of the light block member align with each other and continuously extend in a second direction along an optical axis direction of the lenses.

A light emitting device includes a light-guide member that extends in one direction, a light emitting element that radiates light onto an end surface of the light-guide member, a reflective member that extends in the one direction and reflects, while holding the light-guide member, light that is emitted from a surface of the light-guide member, and a housing that accommodates the reflective member and includes a holding unit, the holding unit being configured to hold the reflective member at an accommodating position of the reflective member and configured to allow the reflective member to be released from a state of being held when the reflective member is bent in a crossing direction that crosses the one direction.

An image forming apparatus includes (a) a plurality of image forming unit arranged along a transfer medium, each of which is arranged movable between a lower position and an upper position; (b) an estrangement controller to move each of the image forming units between these positions; (c) a print mode management part to determine a designated print mode; (d) an image forming part to select one or more of the image forming units corresponding to the designated print mode, and to form an image to be transferred to the transfer medium by using the selected image forming units; and (e) a correction process part that performs a correction process. Wherein (f) the correction process part regularly judges whether or not a correction process execution condition is satisfied, and performs a regular correction process when the correction process execution condition is satisfied, and (g) the print mode management part judges whether or not another print process in the designated print mode has been performed after a previous regular correction process, and sets a print mode based on a judgment result by the print mode management part.