Image processing device and method of acquiring amount of density deviation of light-emitting-element group

摘要

An image forming section includes a bearing member configured to bear an image, and a plurality of light-emitting-element groups each having a plurality of light emitting elements arranged linearly in an arrangement direction. The image forming section forms an image on the bearing member by using the light-emitting-element groups to transfer the image on a sheet. The reader reads an image on a sheet. When executed by the processor, the instructions cause the processor to perform: a pattern reading process of controlling the reader to read a pattern image, the pattern image being an image for detecting density deviation and formed on the sheet by using the light-emitting-element groups; and a calculating process of calculating an amount of density deviation of each of the light-emitting-element groups based on a reading result by the pattern reading process. Each light-emitting-element group is a unit of calculation of the amount of density deviation.

主权项

1. An image processing device comprising:
an image forming section comprising:
a bearing member configured to bear an image; anda plurality of light-emitting-element groups each having a plurality of light emitting elements arranged linearly in an arrangement direction, the image forming section being configured to form an image on the bearing member by using the plurality of light-emitting-element groups to transfer the image on a sheet; a reader configured to read an image on a sheet; a processor; and a memory storing instructions, the instructions, when executed by the processor, causing the processor to perform:
a pattern writing process of controlling the image forming section to form a pattern image on the sheet by using the plurality of light-emitting-element groups such that a length of the pattern image in the arrangement direction corresponds to an entire exposure range of the plurality of light-emitting-element groups, the pattern image being an image for detecting density deviation;a pattern reading process of controlling the reader to read the pattern image formed on the sheet by the pattern writing process; anda calculating process of calculating an amount of density deviation of each of the plurality of light-emitting-element groups based on a reading result by the pattern reading process, each of the plurality of light-emitting-element groups being a unit of calculation of the amount of density deviation.