Printer has a standby state in which the motor driving the laser scanning
mirror is turned off immediately after a print job when another page is
not ready. To increase operating speed, a signal to the printer starts a
timer (Ready timer). When a page is printed, the timer is started and
only when it reaches zero is the motor turned off. When data of a page is
received by the printer and the Ready timer is non-zero, a sheet is
immediately picked for printing.