| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that operation is stopped when paper sheets in all of the grouped paper feeding trays are used up although there is a method for preventing the stop of the operation by grouping a plurality of paper feeding trays and switching paper feed from one empty tray to grouped other cassette, in an image forming apparatus having a plurality of paper feeding trays. <P>SOLUTION: Since the image forming apparatus cautions a user to supply paper sheets when the only paper feeding tray storing the paper sheets is the last paper feeding tray, the paper sheets are supplied to other paper feeding trays while the paper sheets are fed from the last cassette to be printed, continuous printing can be kept up. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
