Image forming apparatus, control method and computer-readable medium for stopping a print job during printing by a printer

An image forming apparatus including a drawing unit configured to generate pixel data based on print data and an image processing unit configured to perform image processing for the pixel data, the apparatus comprising:

• a first determination unit configured to determine, while said drawing unit and said image processing unit are performing processing, whether to stop the processing, when receiving a stop instruction for the processing from a control unit, in accordance with a state of process of the processing for the print data in said drawing unit at a time point when the stop instruction is received;
• a second determination unit configured to determine whether said image processing unit as an output destination of pixel data generated by said drawing unit is configured to be stopped, when said first determination unit determines to stop the processing;
• and
• a transmission unit configured to transmit pixel data of predetermined color values to said image processing unit for the number of pixels which have not been processed in processing of generating the pixel data by said drawing unit when said second determination unit determines that said image processing unit is not configured to be stopped,
• wherein said image processing unit performs image processing by using pixel data of the predetermined color values transmitted by said transmission unit.

An image forming apparatus including a drawing unit configured to generate pixel data based on print data and an image processing unit configured to perform image processing for the pixel data, the apparatus comprising:

• a holding unit configured to hold, while said drawing unit and said image processing unit are performing processing, pixel data processed immediately before reception of a pause instruction for the processing from a control unit and position information of pixels which have not been processed in processing of generating the pixel data by said drawing unit when receiving the pause instruction;
• a determination unit configured to determine whether said image processing unit as an output destination of pixel data generated by said drawing unit is configured to be stopped, when receiving the pause instruction;
• a first transmission unit configured to transmit pixel data of predetermined color values to said image processing unit by the number of pixels which have not been processed in processing of generating the pixel data by said drawing unit, when said determination unit determines that said image processing unit is not configured to be stopped;
• and
• a second transmission unit configured to transmit the predetermined color values to said image processing unit by the number of pixels included in print data held by said holding unit and have undergone drawing processing, after the image forming apparatus returns from a pause,
• wherein said drawing unit continues drawing processing based on the position information held by said holding unit after the image forming apparatus returns from the pause.

A control method for an image forming apparatus including a drawing unit configured to generate pixel data based on print data and an image processing unit configured to perform image processing for pixel data generated by the drawing unit, the method comprising:

• a determination step of determining, while the drawing unit and the image processing unit are performing processing, whether a stop instruction for the processing is received from a control unit;
• and
• a transmission step of transmitting pixel data of predetermined color values to the image processing unit for the number of pixels which have not been processed in process of generating pixel data by the drawing unit in case where it is determined in the determination step that the stop instruction for the processing received,
• wherein the image processing unit performs image processing by using pixel data of the predetermined color values transmitted in the transmission step.

A non-transitory computer-readable medium storing a program for causing a computer to function as

• a determination unit configured to determine, while a drawing unit and an image processing unit are performing processing, whether a stop instruction for the processing is received from a control unit;
• and
• a transmission unit configured to transmit pixel data of predetermined color values to the image processing unit for the number of pixels which have not been processed in process of generating pixel data by the drawing unit in a case where the determination unit determines that the stop instruction for the processing is received,
• wherein the image processing unit functions to perform image processing by using pixel data of the predetermined color values transmitted by the transmission unit.