Patent ID: 8111420

Claim:
A printer control apparatus that receives data of an image in an original from a reader, writes the data of the image in a memory, and transmits the written image data from the memory to a printer, the printer control apparatus comprising: a controller which controls transmission of the image data written in the memory to the printer while the image data received from the reader is being written to the memory, wherein said controller includes: a first determining portion which determines a size of the original; a second determining portion which determines a data size of the image data based on the determined size of the original; a third determining portion which determines a reader processing speed, at which the reader reads the image of the original; and a fourth determining portion which determines a printer processing speed, at which the printer prints an image, wherein said controller transmits, when a predetermined data amount of the image data from the reader, which is smaller than the data size determined by the second determining portion, has been written in the memory, the image data written in the memory to the printer, and wherein said controller determines the predetermined data amount according to the reader processing speed determined by the third determining portion, the printer processing speed determined by the fourth determining portion, and the image data size determined by the second determining portion.