Title:
IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2023048677
Kind Code:
A
Abstract:
To provide an image forming apparatus that can easily adjust the deviation of dots in a main scanning direction.SOLUTION: An image forming apparatus comprises an optical scanner, a developing unit, a control unit, and a storage unit. The optical scanner includes a light source that has light emitting units, and a polygon mirror. The developing unit forms a toner image. The storage unit stores an evaluation chart. The evaluation chart has a first evaluation pattern, a second evaluation pattern, a third evaluation pattern, and a fourth evaluation pattern. The first evaluation pattern has a plurality of first evaluation patches arranged in a main scanning direction and a sub scanning direction. The first evaluation patch has a first dot row, and a second dot row that is adjacent to the first dot row in the sub scanning direction and arranged to be deviated from the first dot row in the main scanning direction. The second evaluation pattern has a second evaluation patch having a symmetrical shape to the first evaluation patch in the main scanning direction. The third evaluation pattern has a plurality of third evaluation patches. The fourth evaluation pattern has a plurality of fourth evaluation patches.SELECTED DRAWING: Figure 15
Inventors:
ISHIDA HIDEKI
Application Number:
JP2021158122A
Publication Date:
April 07, 2023
Filing Date:
September 28, 2021
Export Citation:
Assignee:
KYOCERA DOCUMENT SOLUTIONS INC
International Classes:
G03G21/00; B41J2/47; B41J29/393; G03G15/00; G03G15/043
Attorney, Agent or Firm:
Patent Attorney Corporation Sano Patent Office