Image forming apparatus, control method, and storage medium storing program
AssigneeCanon Kabushiki Kaisha
InventorKanako Kaneda
Life of this patent
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Abstract
An image forming apparatus, based on print target image data, obtains a video count of a developer unit that forms an image on a photoconductor for each of regions divided in a scanning direction of a laser that exposes the photoconductor. Also after obtaining the video count, halftone processing is performed on the image data. Based on the obtained video count, patch data for cleaning the photoconductor corresponding to each region is generated. The developer unit is controlled to execute image formation based on image data for which the halftone processing is performed, and to execute image formation based on the generated patch data.
Claims10
An image forming apparatus having a first controller and a second controller, the apparatus comprising:
- an obtainment unit configured to, based on print target image data, obtain a video count of a developer unit that forms an image on a photoconductor for each of regions divided in a scanning direction of a laser that exposes the photoconductor;
- a halftone processing unit configured to, after the video count is obtained by the obtainment unit, execute halftone processing on the image data;
- a generation unit configured to, based on the video count obtained by the obtainment unit, generate patch data for cleaning the photoconductor corresponding to each region;
- and
- a control unit configured to control the developer unit to execute image formation based on image data for which the halftone processing is executed by the halftone processing unit, and to execute image formation based on the patch data generated by the generation unit, wherein
- the video count obtained by the obtainment unit is communicated between the first controller which includes the obtainment unit and the second controller which includes the generation unit.
A control method executed in an image forming apparatus, the method comprising:
- based on print target image data, obtaining a video count of a developer unit that forms an image on a photoconductor for each of regions divided in a scanning direction of a laser that exposes the photoconductor;
- after the video count is obtained, executing halftone processing on the image data;
- based on the obtained video count, generating patch data for cleaning the photoconductor corresponding to each region;
- and
- controlling the developer unit to execute image formation based on image data for which the halftone processing is executed, and to execute image formation based on the generated patch data.
A non-transitory computer-readable storage medium storing a program for causing a computer to function to
- based on print target image data, obtain a video count of a developer unit that forms an image on a photoconductor for each of regions divided in a scanning direction of a laser that exposes the photoconductor;
- after the video count is obtained, execute halftone processing on the image data;
- based on the obtained video count, generate patch data for cleaning the photoconductor corresponding to each region;
- and
- control the developer unit to execute image formation based on image data for which the halftone processing is executed, and to execute image formation based on the generated patch data.
Dependencies are inferred from the claim text.