A printer for electrophotographically forming an image on a condinuous-form recording paper (20). A fransfer unit (7) and a heat fixing roll pair (8) are brought into their withdrawn states, respectively, in a print stand-by state, whereby the recording paper (20) becomes out of contact with a photoconductive drum (1) and a heat roll (81A). A dust removing brush pair (40) is also brought into its withdrawn state in the print stand-by state so as to be out of contact with the recording paper (20).