| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent misoperation due to that detection similar to a full condition is even performed temporarily such as in the case that paper is discharged to a discharge tray in a curled condition, surely control a full condition of the paper, and attain reduction of the number of write times relating to a memory for this control. SOLUTION: Paper 14 passing through a photosensitive body drum 21, detecting its rear end by a discharge sensor 26 and by a full stack sensor 31, is discharged onto a discharge tray 15. The full stack sensor 31 is turned on when the paper 14 passes and in a condition stacking the paper 14 in a prescribed height or more. In the point of time this on-condition is continued, a full stack counter starts a count for control, in the point of time leading to a prescribed count value, the paper 14 is discriminated in a full condition. Even when the curled paper 14 is temporarily discharged, before leading to this value, by resetting the count, the full condition is prevented from being discriminated.</p> |
