Image forming device

Japan Patent

APP PUB NO JP-2021011369-A
SERIAL NO

2019127063

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Abstract

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To prevent erroneous detection of the paper width of paper stacked on a paper feeding tray.SOLUTION: An image forming device includes a paper feeding tray 83 on which paper P is stacked, a side regulating plate 82 that regulates a position of an end portion of the paper P stacked on the paper feeding tray 83, a paper width sensor 101 that detects the position of the end portion of the paper P regulated by the side regulating plate 82, and outputs a detection signal according to the position of the end portion, a paper presence/absence sensor 107 that detects the presence/absence of the paper P stacked on the paper feeding tray 83, and a CPU 106 that calculates the paper width of the paper P stacked on the paper feeding tray 83 on the basis of the detection signal output from the paper width sensor 101. The CPU 106 makes the calculated paper width of the paper P on the basis of the detection signal as the defined paper width of the paper P stacked on the paper feeding tray 83, after a predetermined time TA has passed since the paper presence/absence sensor 107 detects that the paper P is stacked on the paper feeding tray 83.SELECTED DRAWING: Figure 8

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