Patent ID: 7440710

Claim:
An image forming apparatus comprising: a main body having a printer for printing images on paper sheets and a paper ejection port to eject printed paper sheets, wherein the printer is adapted to perform a copy function by printing an image read from a document and a printer function of printing an externally input image; a paper ejection unit which has first and second trays for receiving paper sheets ejected from the paper ejection port, the first tray for printing by the copy function and the second tray for printing by the printer function, wherein the paper ejection unit moves the trays selectively to a position corresponding to the paper ejection port; and a CPU to perform functions including: detecting which one of the trays of the paper ejection unit is set at the position coresponding to the paper ejection port; detecting that a copy job for printing by the copy function is entered; detecting a number of copies when the copy job is entered; when the CPU detects that the first tray is set at the position corresponding to the paper ejection port and the number of copies is more than one, starting printing by the copy function while holding the trays of the paper ejection unit at their current positions; and when the CPU detects that the number of copies is one, starting printing by the copy function while holding the trays of the paper ejection unit at their current positions.