| 摘要 |
PROBLEM TO BE SOLVED: To provide an image-forming apparatus which enhances using efficiency of printing papers. SOLUTION: When a printing output based on a command from a host computer 16 is to be obtained, a control part 10 controls in a different manner from when the printing output is obtained on the basis of a command from an operation display part 13. For instance, if there are papers with one faces already used in either of paper feed trays 11, 12, the control part 10 controls an operation of supplying the papers with one faces used and a double face- printing function operation, or supplies the papers with one faces used and performs double face-printing when a double face-printing function is preliminarily set. In the case of a printer function for obtaining the printing output from the host computer 16, if papers with the rear faces used are present, the papers are supplied, so that papers not used can be prevented from being used and printed out. |
