Image forming apparatus
AssigneeRiso Kagaku Corporation
InventorShigeru MASUDA
Life of this patent
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Abstract
A print-mode determination processor determines the print mode of a print job that is described in a page description language (PDL) and that has a print mode set to an automatic determination mode, using image data generated for a preflight check by a preflight checker that performs a preflight check of image data of a print job. The image data for a preflight check has a resolution lower than that of thumbnail image data and sufficient to determine whether to set a color print mode or a black-and-white print mode, such as presence or absence of a color part in the image data of the print job or the degree of the color part, so that the time required for generating and analyzing image data for print mode determination can be shortened.
Claims3
An image forming apparatus comprising:
- a preflight image generator that generates image data for a preflight check when a print job described in a page description language is input;
- a print mode determiner that determines whether to execute the print job in a color print mode or a black-and-white print mode by analyzing pixel information of the image data for a preflight check;
- a preflight checker that performs a preflight check of the print job using the image data for a preflight check;
- a raster image processor that performs raster image processing in a print mode determined by the print mode determiner to the print job having been subjected to the preflight check by the preflight checker so as to generate image data for printing;
- and
- a print unit that executes the print job using the image data for printing generated by the raster image processor, and performs printing processing in a print mode determined by the print mode determiner.
Dependencies are inferred from the claim text.