Patent ID: 11878893
Assignee: TOSHIBA TEC KABUSHIKI KAISHA
Field: Handling (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 5:
6. An image forming apparatus, comprising:
a paper housing device that houses a sheet of paper;
a printer that forms an image on the paper;
a conveying device that conveys the paper housed in the paper housing device to the printer;
a paper-length detection device that detects a length of the paper housed in the paper housing device; and
a first controller that adjusts magnification of image data in accordance with a length of the paper detected by the paper-length detection device and causes the printer to form an image on a basis of the magnification-adjusted image data, wherein
the paper-length detection device includes
a bottom plate, a paper sheet being placed on the bottom plate, the paper sheet having a first edge and a second edge opposed to the first edge,
a first regulatory member that is provided to be capable of moving relative to the bottom plate in a direction in which the first edge and the second edge face each other, and is in contact with the first edge,
a second regulatory member that is in contact with the second edge,
a magnet that rotates while a direction from an S pole and an N pole are parallel to the bottom plate,
a moving mechanism that
supports the magnet,
and
causes the magnet to rotate in accordance with movement of the first regulatory member closer to or further from the second regulatory member, and

an angle sensor that faces the magnet, and outputs a signal of a voltage value corresponding to a magnetic field that periodically varies in accordance with the rotation of the magnet, the voltage value corresponding to an absolute angle of the magnet, an absolute value of a length of the paper sheet being output based on the absolute angle.