Image forming apparatus and control method
AssigneeCanon Kabushiki Kaisha
InventorSEIJIRO IMAI
Life of this patent
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Abstract
Even in a case where a print job is interrupted, whether there is a periodic image defect over a plurality of scanned images is determined. An image forming apparatus according to the present disclosure acquires data on a scanned image obtained by reading a printing material on which a pattern image is formed, detects a periodic image defect from the data, identifies a component of an image forming apparatus that has caused the image defect based on a period of the detected image defect, and in a case where a job of forming the pattern image on a plurality of printing materials is interrupted, resumes forming the pattern image from the beginning of the job.
Claims14
An image forming apparatus comprising an image forming unit configured to form a pattern image on a printing material, the image forming apparatus comprising:
- one or more controllers including one or more processors;
- and
- one or more memories, the one or more controllers configured to:
- acquire data on a scanned image obtained by reading the printing material on which the pattern image is formed;
- detect a periodic image defect from the data;
- identify a component of the image forming apparatus that has caused the image defect based on a period of the detected image defect;
- and
- in a case where a job of forming the pattern image on a plurality of printing materials is interrupted, resume forming the pattern image from a beginning of the job.
An image forming apparatus comprising an image forming unit configured to form a pattern image for each color on a plurality of printing materials, the image forming apparatus comprising:
- one or more controllers including one or more processors;
- and
- one or more memories, the one or more controllers configured to:
- acquire data on a scanned image obtained by reading a printing material on which the pattern image is formed;
- detect a periodic image defect from the data;
- identify a component of the image forming apparatus that has caused the image defect based on a period of the detected image defect;
- and
- in a case where a job of forming the pattern image is interrupted, resume the job from the pattern image at a beginning in a color of the pattern image been reading at a time of interruption of the job.
A method of controlling an image forming apparatus comprising an image forming unit configured to form a pattern image on a printing material, the method comprising the steps of:
- acquiring data on a scanned image obtained by reading the printing material on which the pattern image is formed;
- detecting a periodic image defect from the data;
- identifying a component of the image forming apparatus that has caused the image defect based on a period of the detected image defect;
- and
- in a case where a job of forming the pattern image on a plurality of printing materials is interrupted, resuming forming the pattern image from a beginning of the job.
A method of controlling an image forming apparatus comprising an image forming unit configured to form a pattern image for each color on a plurality of printing materials, the method comprising the steps of:
- acquiring data on a scanned image obtained by reading a printing material on which the pattern image is formed;
- detecting a periodic image defect from the data;
- identifying a component of the image forming apparatus that has caused the image defect based on a period of the detected image defect;
- and
- in a case where a job of forming the pattern image is interrupted, resuming the job from the pattern image at a beginning in a color of the pattern image been reading at a time of interruption of the job.
Dependencies are inferred from the claim text.