Xerox 300x 用户手册

  When the printer is idle for more than 2 hours, it goes into a 

standby mode that keeps the printer ready to use and reduces energy 
consumption.

The printer exits standby mode when you send a file to the printer, press one 
of the front panel buttons, or open the rear cover.  For example, adding ink 
or changing the fuser wiper causes the printer to exit standby mode.  The 
printer does not purge ink when it exits standby mode after being idle for 
2 hours.  When the printer exits standby mode, it is ready to print in about 
5 minutes.

  When the printer is idle for 2 days or more, it cools down 

completely.  When the printer exits the cool-down mode after being idle for 
2 days, it purges ink as part of the warm-up cycle.  The printer is ready to 
print in about 20 minutes.