An image forming apparatus includes a light emitting chip and at least one processor. The light emitting chip includes a plurality of light emitting elements, a DAC outputting a voltage corresponding to a setting value, and a circuit unit that supplies a current to the plurality of light emitting elements based on the voltage. At least one processor is configured to set the setting value such that one light emitting element included among the plurality of light emitting elements emits light of a predetermined amount, and correct image data pieces that respectively correspond to the plurality of light emitting elements based on first correction data for correcting amounts of light respectively emitted by the plurality of light emitting elements. The circuit unit supplies a current to each of the plurality of light emitting elements based on the corrected image data pieces.

An image forming apparatus includes an image former that forms a color image by superimposing images of respective colors formed on respective different photoconductors on an intermediate transfer body, the image former continuously forming color images of pages on one continuous paper, and the image forming apparatus includes: a first hardware processor that performs job management for each color and generates print job data in which a margin region having a first width is set on an upstream or a downstream in a sheet passing direction of an image forming region of each page; a second hardware processor that detects a color shift amount of each color of the image forming region; and a third hardware processor that corrects a formation position of the image forming region to be a print target page next on the print job data for a color in which a color shift has occurred.

An image forming apparatus includes a first image forming unit, a second image forming unit, and a generator. The first image forming unit forms a first image on a basis of first image data. The second image forming unit forms a light-emittable second image on a basis of second image data. The generator generates the first image data on a basis of print data, and generates the second image data to cause the second image to be overlaid on part or all of the first image.

An image forming apparatus includes a light emitting chip and at least one processor. The light emitting chip includes a plurality of light emitting elements, a DAC outputting a voltage corresponding to a setting value, and a circuit unit that supplies a current to the plurality of light emitting elements based on the voltage. At least one processor is configured to set the setting value such that one light emitting element included among the plurality of light emitting elements emits light of a predetermined amount, and correct image data pieces that respectively correspond to the plurality of light emitting elements based on first correction data for correcting amounts of light respectively emitted by the plurality of light emitting elements. The circuit unit supplies a current to each of the plurality of light emitting elements based on the corrected image data pieces.

An image forming apparatus includes a light emitting chip and at least one processor. The light emitting chip includes a plurality of light emitting elements, a DAC outputting a voltage corresponding to a setting value, and a circuit unit that supplies a current to the plurality of light emitting elements based on the voltage. At least one processor is configured to set the setting value such that one light emitting element included among the plurality of light emitting elements emits light of a predetermined amount, and correct image data pieces that respectively correspond to the plurality of light emitting elements based on first correction data for correcting amounts of light respectively emitted by the plurality of light emitting elements. The circuit unit supplies a current to each of the plurality of light emitting elements based on the corrected image data pieces.