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Image forming apparatus, control method, and storage medium for improving throughput in an electrophotographic image forming apparatus

專利號
US11178312B2
公開日期
2021-11-16
申請人
CANON KABUSHIKI KAISHA(JP Tokyo)
發(fā)明人
Yuichiro Shibuya; Jun Itoh
IPC分類
H04N1/64; G03G15/20; H04N1/00
技術領域
image,toner,page,processing,printer,in,fixing,data,pages,printing
地域: Tokyo

摘要

An object is to appropriately control a fixing process while making an attempt to increase speed by improving the PPM in an electrophotographic image forming apparatus. In the electrophotographic image forming apparatus, the control unit decompresses compressed quantized raster image data in units of pages. Then, the control unit derives an image feature quantity from decompressed raster image data in units of pages and notifies the printing unit of the derived image feature quantity. Then, the control unit transfers the decompressed raster image data to the printing unit in units of pages in response to an image transfer request from the printing unit. The printing unit sets a parameter relating to a fixing process in the printing processing based on the notified image feature quantity. Then, the printing unit performs the printing processing in accordance with the set parameter for the decompressed raster image data received from the control unit.

說明書

As above, according to the present embodiment, a notification of the toner application amount is given immediately after image analysis without performing decompression processing separately for image analysis and for image transfer. Due to this, in an electrophotographic image forming apparatus, it is possible to appropriately control the fixing temperature while implementing an increase in speed due to improvement of the PPM. Further, the image analysis is performed for the image data after the page layout is changed in accordance with printing information, and therefore, it is made possible to perform control of the fixing temperature and the like based on an accurate image feature quantity.

OTHER EMBODIMENTS

權利要求

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