Canon Kabushiki Kaisha

Satoru Koyama

Hidetoshi Hanamoto

Noriaki Sato

Akihiko Takeuchi

Mahito Yoshioka

Munehito Kurata

Daizo Fukuzawa

Takuya Mukaibara

Hiromitsu Kumada

Atsuhiko Yamaguchi

Kuniaki Kasuga

Atsunobu Mori

Toshifumi Kitamura

Shuhei Watanabe

Yoshimichi Ikeda

Toru Imaizumi

Keisuke Nakano

Tooru Imaizumi

Akiko Fukuhara

The present disclosure is a printed circuit board on which a connector to connect with a flexible flat cable or a flexible printed circuit board is mounted. The printed circuit board including a receiving port at which the connector receives the flexible flat cable or the flexible printed circuit board; and an opening that is disposed between an end of the printed circuit board facing the receiving port of the connector and a position corresponding to at least one of end portions of the receiving port.

Printed circuit board and image forming apparatus having printed circuit board

An image forming apparatus includes an image carrier, an image forming unit for forming a patch image on the image carrier, a light emitting unit, a plurality of light receiving units adjacently arranged so as to receive light reflected from the patch image when light is irradiated by the light emitting unit onto the patch image which moves with movement of the image carrier and each including one or more light receiving elements, and an output unit for outputting an output signal that depends on a difference between a received light quantity of a first light receiving unit and a received light quantity of a second light receiving unit that are respectively odd-numbered and even-numbered in the arrangement order of the light receiving units.

Image forming apparatus having two or more light receiving units

An image forming apparatus includes an image carrier, an image forming unit configured to form a patch image on the image carrier, and a light emitting unit. In addition, a light receiving unit receives light reflected by the patch image when the patch image that moves with movement of the image carrier is irradiated with light by the light emitting unit, and includes one or more light receiving elements. A setting unit sets a first subset of light receiving elements for receiving reflected light from a first patch image and sets a second subset of light receiving elements for receiving reflected light from a second patch image, with the number of light receiving elements in the first subset differing from that in the second subset.

Image forming apparatus capable of changing the number of light receiving elements of a light receiving unit

The image forming apparatus includes a fixing portion, a temperature detection element, and a power control portion. The power control portion is capable of setting a first power supply control mode for supplying power according to the detected temperature for each one control cycle, a second power supply control mode for supplying power according to the detected temperature for each one control cycle and a third power supply control mode for supplying predetermined power, and switches, immediately before a leading edge of the recording material enters the fixing portion, a state of supplying the power in the first power supply control mode to a state of supplying the power in the second power supply control mode, and then switches the state of supplying the power in the second power supply control mode to a state of supplying the power in the third power supply control mode.

Image forming apparatus

There are provided an image forming apparatus which can implement on-demand fusing with quick rise in temperature by using the upper current (power) limit of a commercial power supply more effectively and a control method for the apparatus. This image forming apparatus includes a rechargeable battery device capable of charging and discharging, and is designed such that a load other than heating element of a fusing device can receive power from the commercial power supply and/or the rechargeable battery device. When printing is to be executed, the temperature of the fusing device is detected by a temperature detection element provided for the fusing device, and the supply of power from the commercial power supply or rechargeable battery device to the load is controlled in accordance with the detected temperature. The power supplied from the commercial power supply to the fusing device is then limited to a limit level corresponding to the control result.

Image forming apparatus and control method with power controlled in accordance with remaining amount of rechargeable battery power

There are provided an image forming apparatus which can implement on-demand fusing with quick rise in temperature by using the upper current (power) limit of a commercial power supply more effectively and a control method for the apparatus. The image forming apparatus includes a rechargeable battery device capable of charging and discharging. A load other than a heating element of a fusing device is designed to be capable of receiving power from the commercial power supply and/or the rechargeable battery device. At turn-on or upon returning from the energy saving mode, the supply of power from the commercial power supply and rechargeable battery device to the load is controlled. The power supplied from the commercial power supply to the fusing device is limited to a limit level corresponding to the above control result.

Image forming apparatus with control of commercial and battery power supplies to fusing device

There is provided an image forming apparatus which can implement on-demand fusing with quick rise in temperature by using the upper current (power) limit of a commercial power supply more effectively. This image forming apparatus includes a rechargeable battery device capable of charging and discharging, and is designed such that a driven load other than a heating element of a fusing device can receive power a commercial power supply and/or the rechargeable battery device. When printing is to be executed, the commercial power supply and rechargeable battery device are controlled as power supply sources for the driven load. The power supplied from the commercial power supply to the fusing device is then limited to a limit level corresponding to the control result.

Image forming apparatus with power supply control for fusing control circuit

Image forming apparatus and method of controlling commercial power supply to fusing means

In a sheet processing apparatus, which is connected to an image forming apparatus, applies a predetermined process to a plurality of sheets that have undergone image formation as a unit, and has power storage means capable of storing electric power required to execute the process, the output voltage from the power storage means is detected, and when the detected voltage exceeds a predetermined value, the process is controlled to execute the process using the electric power stored in the power storage means in accordance with an instruction from the image forming apparatus. Since the process is executed using the electric power supplied from the power storage means, consumption power can be prevented from temporarily increasing upon execution of the process.

Sheet processing apparatus and control method thereof

A motor rotational speed control apparatus is constructed by a control unit for performing an instruction to accelerate a rotational speed of a motor, an instruction to decelerate, or an instruction to maintain a rotational speed, a driving unit for driving the motor in accordance with an instruction outputted from the control unit, and first and second wires for transferring the instruction of the control unit to the driving unit. The control unit shows the instruction by a combination of signal levels of a first signal and a second signal and transmits the first and second signals to the driving unit through the first and second wires, and the driving unit drives the motor in accordance with the combination of the signal levels of the first and second signals.

Growing community of inventors

Mishima, Japan

Satoru Koyama