US 9,811,039 B2
Image forming apparatus using pressing plate and computer-readable medium storing instructions to control movement of pressing plate
Takashi Suzuki, Aichi (JP); and Masahito Saeki, Aichi (JP)
Assigned to Brother Kogyo Kabushiki Kaisha, Nagoya, Aichi (JP)
Filed on Mar. 25, 2016, as Appl. No. 15/80,665.
Claims priority of application No. 2015-067106 (JP), filed on Mar. 27, 2015.
Prior Publication US 2016/0282778 A1, Sep. 29, 2016
Int. Cl. G03G 15/00 (2006.01); G03G 15/20 (2006.01)
CPC G03G 15/6502 (2013.01) [G03G 15/65 (2013.01); G03G 15/2039 (2013.01); G03G 2215/00383 (2013.01); G03G 2215/00603 (2013.01)] 12 Claims
OG exemplary drawing
1. An electrophotographic image forming apparatus comprising:
a motor;
an image forming device configured to form an image on a printing sheet, the image forming device using a driving force transmitted from the motor;
a fixing device configure to fix the image formed on the printing sheet;
a tray configured to accommodate multiple printing sheets to be conveyed toward the image forming device, the tray being detachably attached to a main body of the image forming apparatus;
a pressing plate configured to move up, with use of a driving force of the motor, the printing sheets accommodated in the tray to a conveying position;
a storage device; and
a controller,
wherein the motor is configured to operable in a first mode in which the motor rotates at a first speed and a second mode in which the motor rotate at a second speed which is slower than the first speed,
wherein the controller is configured to execute:
a storing process in which the controller stores a rotation amount of the motor since the tray is attached to the main body as a stored rotation amount;
a moving process in which the controller moves, in response to receipt of a print instruction, the pressing plate by driving the motor such that:
the controller drives the motor in the first mode when a remaining rotation amount is equal to or larger than a particular threshold rotation amount, the remaining rotation amount being a difference between a target rotation amount, which is a rotation amount necessary to move the pressing plate from a position when the tray is attached to the main body to the conveying position, and the stored rotation amount, which is stored in the storage device; and
the controller drives the motor in the second mode when the remaining rotation amount is less than the particular threshold rotation amount.