Canon Kabushiki Kaisha

Ryosuke Nanai

Mitsuhiro Sugeta

Hiroki Hirata

Shinya Suzuki

Toshifumi Kakutani

Tetsuhiro Yoshimoto

An image forming apparatus which includes a motor, a first power supply unit that supplies a first voltage to the motor, and a second power supply unit that supplies a second voltage, which is higher than the first voltage, to the motor, and a central processing unit (CPU) that controls supply of the second voltage from the second power supply unit to the motor while maintaining supply of the first voltage from the first power supply unit to the motor.

Electronic apparatus which controls power to a motor from two different power supplies

A board includes a first motor driver control circuit, a first connector, and a second connector. The first motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector includes at least the following: a first pin to which a first output of the first H-bridge is input, a second pin to which a second output of the first H-bridge is input, and a third pin. The second connector is disposed apart from the first connector and includes at least the following: a first pin to which a first output of the second H-bridge is input, a second pin to which a second output of the second H-bridge is input, and a third pin of the second connector.

Board and electronic apparatus including board

A board a motor driver control circuit, a first connector, a first wire, a second wire, a third wire, a fourth wire, a fifth wire, and a sixth wire. The motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector is a connector to which an output from the first H-bridge and an output from the second H-bridge are input. The first wire and the second wire input the output from the first H-bridge to the first connector. The third wire and the fourth wire input the output from the second H-bridge to the first connector. The fifth wire is connected to the first wire and outputs the first H-bridge output to another connector. The sixth wire is connected to the second wire and outputs the first H-bridge output to the other connector.

Board and electronic device including board

An image forming apparatus comprises a fixing device comprising a heater for heating a sheet on which an image is formed and a non-volatile memory in which characteristic information of the heater is stored. The fixing device is replaceable. In a case where the fixing device is replaced, the image forming apparatus starts to supply power to the heater before completing to read the characteristic information from the fixing device replaced. Due to this, the image forming apparatus can promptly heat the heater of the fixing device than before.

Image forming apparatus with fixing device detachably mounted thereto

An image forming apparatus includes: an image carrier on which images formed by a plurality of image forming units are transferred; a sensor configured to irradiate the image carrier with light, and detect reflected light; a detection unit configured to detect, based on an output value of the sensor, a feature value of an edge of a patch image which has been formed by the image forming unit and transferred to the image carrier; a determination unit configured to determine a position of the patch image using the output value of the sensor corresponding to the patch image and the feature value of the edge; and a color registration control unit configured to perform color registration control based on the determined position of the patch image.

Image forming apparatus for performing color registration control based on detection result of patch image

An image forming apparatus, including: an image forming unit configured to form toner images on an image bearing member and toner patterns for detecting a relative position of the toner images; a detection unit having a light emission unit and a light receiving unit configured to receive reflection light from the image bearing member and the toner patterns to output an analog signal; a conversion unit configured to convert the analog signal into a digital signal based on a threshold value; a correction unit configured to correct a misregistration between the toner images on a recording medium based on the digital signal; and a control unit configured to control, when values of the analog signal includes a value lower than the threshold value, light intensity of the light emission unit so that the values of the analog signal become higher than the threshold value.

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Tokyo, Japan

Ryosuke Nanai