Image forming apparatus, control method thereof, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorMASASHI OYA
Life of this patent
Estimating the term…
Abstract
Image data that is obtained by performing halftone processing for printing-target image data is obtained, a plurality of pieces of correction information corresponding to types of cause of variations of light amount for correcting the variations of light amount on a photosensitive body by light radiated from a plurality of light-emitting elements is generated, and the image data for which halftone processing has been performed is corrected by using the correction information, but the printing-target image data is not corrected.
Claims14
An electrophotographic image forming apparatus that utilizes a line head in which a plurality of light-emitting elements is arranged as a light source, the apparatus comprising:
- an obtaining unit configured to obtain image data that is obtained by performing halftone processing for printing-target image data;
- a generation unit configured to generate a plurality of pieces of correction information corresponding to types of cause of variations of light amount for correcting the variations of light amount on a photosensitive body by light radiated from the plurality of light-emitting elements;
- and
- a correction unit configured to correct the image data for which halftone processing has been performed by using the correction information, wherein
- the correction unit does not correct the printing-target image data.
A control method of an electrophotographic image forming apparatus that utilizes a line head in which a plurality of light-emitting elements is arranged as a light source, the control method comprising:
- an obtaining step of obtaining image data that is obtained by performing halftone processing for printing-target image data;
- a generation step of generating a plurality of pieces of correction information corresponding to types of cause of variations of light amount for correcting the variations of light amount on a photosensitive body by light radiated from the plurality of light-emitting elements;
- and
- a correction step of correcting the image data for which halftone processing has been performed by using the correction information, wherein
- at the correction step, the printing-target image data is not corrected.
A non-transitory computer readable storage medium storing a program for causing a computer to execute a control method of an electrophotographic image forming apparatus that utilizes a line head in which a plurality of light-emitting elements is arranged as a light source, the control method comprising:
- an obtaining step of obtaining image data that is obtained by performing halftone processing for printing-target image data;
- a generation step of generating a plurality of pieces of correction information corresponding to types of cause of variations of light amount for correcting the variations of light amount on a photosensitive body by light radiated from the plurality of light-emitting elements;
- and
- a correction step of correcting the image data for which halftone processing has been performed by using the correction information, wherein
- at the correction step, the printing-target image data is not corrected.
Dependencies are inferred from the claim text.