| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of preventing paper sheets from being deficient by estimating the occurrence there. <P>SOLUTION: Each time sheets are supplied to the sheet feed part of a printer engine 4, a printer 1 stores the number of the supplied sheets into a memory 12. Also, each time a print job is performed, the printer 1 stores the number of sheets used in the print job into the memory 12. Based on the number of the supplied sheets and the number of sheets used in each job, the printer 1 determines whether or not paper insufficiency would occur during a paper insufficiency determination period set in advance. When the determination is made that the paper insufficiency would occur, the printer 1 informs a user of it by outputting information about the estimation of the occurrence of paper insufficiency onto the display of an operation panel 3, by outputting voice, or by other method. Accordingly, the paper insufficiency is estimated in advance, thereby preventing the occurrence thereof. <P>COPYRIGHT: (C)2007,JPO&INPIT |
