Image forming apparatus and method of controlling image forming apparatus
AssigneeKYOCERA Document Solutions Inc.
InventorHiroshi Yokota
Life of this patent
Estimating the term…
Abstract
A sheet reader reads the entire sheet which is transported. Based on the reading, a controller generates region classification image data for distinguishing between a region of the sheet and a region other than the sheet. The controller performs comparison processing in which reference image data that is the region classification image data of a first sheet in a print job and comparison target image data that is the region classification image data for another sheet are compared. The controller determines whether or not a sheet corresponding to the comparison target image data is abnormal.
Claims8
An image forming apparatus comprising:
- a paper feeder which feeds a sheet;
- a sheet transporter which transports the sheet supplied from the paper feeder;
- an image former which prints the transported sheet;
- a sheet reader which is provided on an upstream side in a sheet transport direction with respect to the image former so as to read the transported sheet;
- a storage medium which stores data;
- and
- a controller,
- wherein the sheet reader reads the entire sheet transported, and
- the controller
- generates, based on read image data which is image data of the sheet obtained by the reading of the sheet reader, region classification image data for distinguishing between a region of the sheet and a region other than the sheet in the read image data,
- stores, in the storage medium, the generated region classification image data,
- performs comparison processing in which reference image data that is the region classification image data of a first sheet in a print job and comparison target image data that is the region classification image data for comparison with the reference image data are compared,
- sets the region classification image data of each of a second and subsequent sheets in the print job to the comparison target image data,
- determines, based on the comparison processing, whether or not the sheet corresponding to the comparison target image data is abnormal for the first sheet in the print job and
- makes the sheet transporter stop the transport of the sheet such that the image former is made to stop image formation when determining that the sheet corresponding to the comparison target image data is abnormal.
A method of controlling an image forming apparatus, the method comprising:
- feeding a sheet;
- transporting the fed sheet;
- using an image former so as to print the transported sheet;
- providing a sheet reader which reads the transported sheet on an upstream side in a sheet transport direction with respect to the image former;
- using the sheet reader so as to read the entire sheet transported;
- generating, based on read image data which is image data of the sheet obtained by the reading of the sheet reader, region classification image data for distinguishing between a region of the sheet and a region other than the sheet in the read image data;
- storing the generated region classification image data;
- performing comparison processing in which reference image data that is the region classification image data of a first sheet in a print job and comparison target image data that is the region classification image data for comparison with the reference image data are compared;
- setting the region classification image data of each of a second and subsequent sheets in the print job to the comparison target image data;
- determining, based on the comparison processing, whether or not the sheet corresponding to the comparison target image data is abnormal for the first sheet in the print job;
- and
- stopping the transport of the sheet and image formation when it is determined that the sheet corresponding to the comparison target image data is abnormal.
Dependencies are inferred from the claim text.