HP 4550 manual 3Optional duplex printing accessory

Using the optional duplex printing accessory for two-sided printing

	The optional duplex printing accessory (figure 3-3), enables you to
	print on both sides of a page. In two-sided printing, known as duplex
	printing or duplexing, the back side of the page is printed first. Then
	the page is sent through the duplex printing accessory, where it is
	flipped over and sent back through the printer for printing on the front.
Note	Although the printer detects the presence of the duplex printing
	accessory, you must still specify duplex options in your software
	application or in the printer driver in order to print on both sides of the
	page.

Figure 3-3Optional duplex printing accessory

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