| 摘要 |
In an image recording apparatus with excellent quality which can prevent image degradation and the like due to stacking too much recording material on a discharge tray, when the recording operation is carried out, a sensor measures the distance from the upper surface of a flapper to the stacked object. The output obtained here is taken in by a distance detecting circuit. After a calculation circuit carries out comparison and calculation, the distance is calculated and is transmitted to a control circuit. By comparing the calculated distance with thickness data with regard to the recording material and the like stored in advance in a memory device in the control circuit, the allowable residual amount of stack and the allowable residual number of sheets of stack are further presumed.
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