JP2015105175A5 - - Google Patents

Description

In order to solve the above-described problems, an image forming apparatus according to the present application includes: a storage unit that stores a recording material; a supply unit that supplies the recording material from the storage unit toward a conveyance path; The rear end of the recording material on the downstream side in the feeding direction is regulated, and a regulating means that can move to a position corresponding to the size in the conveyance direction of the recording material, and supply of the recording material is started by the feeding means Between a first threshold value and a second threshold value that is greater than the first threshold value, the detection means for detecting the time from when the recording material reaches the predetermined position of the conveyance path to the recording material And a control means for outputting information indicating that the position of the restricting means is deviated from the position corresponding to the size of the recording material.

Claims (10)

Storage means for storing the recording material;
Supply means for supplying a recording material from the housing means toward the conveyance path;
A restricting means for restricting a rear end of the recording material on the downstream side in the direction in which the recording material is supplied in the housing means, and capable of moving to a position corresponding to the size in the conveying direction of the recording material ;
Detection means for detecting a time from when the supply of recording material is started by the supply means until the recording material reaches a predetermined position in the transport path;
When the time detected by the detecting means is a value between the first threshold value and a second threshold value that is larger than the first threshold value, the position of the restricting means is shifted from the position corresponding to the size of the recording material. Control means for outputting information indicating that,
An image forming apparatus comprising:   The control means counts the number of times the detected value is between the first threshold and the second threshold, and outputs the information when the counted value exceeds the threshold. The image forming apparatus according to claim 1.   The restricting means is movable to a reference position corresponding to the size in the direction in which the recording material is supplied, and the information includes information indicating that the information is shifted from the reference position in a direction opposite to the direction in which the recording material is supplied. The image forming apparatus according to claim 1, further comprising an image forming apparatus.   The image forming apparatus according to claim 1, further comprising an operation unit for designating a size of the recording material.   5. The image formation according to claim 1, wherein the control unit determines that a conveyance failure has occurred when the detected value is larger than the second threshold value. 6. apparatus.   The image forming apparatus according to claim 1, wherein the first threshold value is set according to a supply variation when a plurality of recording materials are supplied by the supply unit. .   7. The control unit according to claim 1, wherein the control unit counts the number of recording materials on which an image is formed and corrects the time detected by the detection unit according to the counted value. The image forming apparatus described in 1.   The image forming apparatus according to claim 7, wherein the value for correcting the detected time is larger as the counted value is larger.   The image forming apparatus according to claim 1, wherein the control unit outputs the information and stops an image forming operation.   The image forming apparatus according to claim 1, further comprising a display unit configured to display the information.