Canon Kabushiki Kaisha

Takao Izaki

Hitoshi Furukawa

Haruki Ishibashi

Yasuhiro Shimura

Jun Agata

Eiji Uekawa

Yasuhiro Nakahara

A sheet processing apparatus includes a first conveyance rotary member, a second conveyance rotary member, a punch member, a sensor, a punch motor, a conveyance motor, a first drive transmission portion including a first number of drive transmission members configured to sequentially transmit driving force of the conveyance motor to the first conveyance rotary member, and a second drive transmission portion including a second number of drive transmission members configured to sequentially transmit driving force of the conveyance motor to the second conveyance rotary member, the second number being larger than the first number.

Sheet processing apparatus and image forming system

A sheet discharging apparatus includes a first discharge unit and a second discharge unit configured to discharge a sheet respectively, a first stacking unit configured to stack the sheet discharged by the first discharge unit, a second stacking unit disposed below the first stacking unit, and configured to stack the sheet discharged by the second discharge unit, a lifting unit configured to lift and lower the first and second stacking units, and a control unit configured to perform a separation process of moving at least one of the first and second stacking units so as to increase a distance between the first and second stacking units in a vertical direction in a case where a matter has come into contact with a lower surface of the first stacking unit.

Sheet discharging apparatus, sheet processing apparatus, and image forming system

A sheet discharging apparatus includes a first stacking unit to stack a sheet discharged by a first discharge unit, a second stacking unit disposed below the first stacking unit to stack the sheet discharged by a second discharge unit, and a lifting unit to lift and lower the first and second stacking units. A detection unit changes an output value based on contact of a matter with a lower surface of the first stacking unit, and a distance estimation unit estimates a distance between the first stacking unit and the second stacking unit. A separation process lifts the first stacking unit to increase a distance between the first and second stacking units in a vertical direction in a case where the output value changes based on contact of the matter with the lower surface of the first stacking unit and the estimated distance being smaller than a threshold value.

The image forming apparatus is characterized in that information about an input voltage detected on the primary side of a transformer is transmitted from a primary-side switching control unit to a secondary-side controller for controlling a heating device, and the controller controls the temperature of a heater of the heating device based on the transmitted information.

Image forming apparatus

An image forming apparatus includes an image forming portion configured to form an image on a recording material, and a fixing portion including a first rotatable member and a second rotatable member, rotatable by rotation of the first rotatable member, and in contact with the first rotatable member. The fixing portion fixes the image on the recording material by heating the image while nipping and feeding the recording material, on which the image is formed, at a nip formed between the first rotatable member and the second rotatable member. A motor drives the first rotatable member, and torque detecting means detects a driving torque of the motor. On the basis of the driving torque detected by the torque detecting means, a controller controls a degree of temperature rise of the first rotatable member immediately before the recording material enters the nip.

Growing community of inventors

Shizuoka, Japan

Takao Izaki