A printing apparatus comprises a housing (26), a paper receiving member (19) disposed within the housing for receiving printed copy sheets, a paper cassette (1) for holding copy sheets to be printed, disposed on the back of the paper receiving member (19) so that the copy sheets are covered with the paper receiving member, and a paper conveyer (25) disposed below the paper cassette (1) for transporting copy sheets from the paper cassette (1) to the paper receiving member (19). An image forming means is located between the paper cassette (1) and the paper conveyer (25) so that the toner image is transferred onto a copy sheet passing through the paper conveyer (25).