Patent ID: 8737905

Claim:
An image forming apparatus comprising: a first receiving section configured to receive first print data; a second receiving section configured to receive second print data; a printing section configured to perform a duplex printing including printing N sheets on first sides thereof and subsequently printing M sheets on second sides thereof, wherein M is equal to or smaller than N; a processor; and memory including instructions which, when executed by the processor, cause the processor to perform: determining a value of N for performing a duplex printing of the second print data as a first value when the second print data is received via the second receiving section while the printing section is not performing printing, and determining the value of N for performing a duplex printing of the second print data as a second value, which is larger than the first value, when the second print data is received via the second receiving section while the printing section is performing printing of the first print data received via the first receiving section.