Canon Kabushiki Kaisha

Optrex Corporation

Yuji Soda

An information processing apparatus includes a first unit and a second unit supplied with power that can be interrupted individually, a power supply switch configured to be operated by a user, to turn off a power supply of the information processing apparatus, a controller configured to perform shutdown processing of the information processing apparatus thereby interrupting supply of power to the first unit and the second unit, upon turning off of the power supply switch, a first timer unit configured to interrupt the supply of the power to the first unit, after a lapse of a first predetermined time after turning off the power supply switch, and a second timer unit configured to interrupt the supply of power to the second unit, after a lapse of a second predetermined time after turning off the power supply switch. The second predetermined time is longer than the first predetermined time.

Information processing apparatus and power-supply control method for information processing apparatus that interrupt power supply to a printing unit based on elapsing of a first time period and that interrupt power supply to a control unit based on elapsing of a second time period

An image forming apparatus which is capable of obtaining stable and satisfactory cleaning performance and fixing performance without holding, in an image forming unit which forms an image on a recording material based on a video signal, data for performing maintenance of the image forming unit. A synchronization signal output from the image forming unit and indicative of timing with which the video signal is output is detected. It is determined whether the synchronization signal is a normal synchronization signal for outputting a video signal for use in forming an image on the recording material or a pattern synchronization signal for outputting a pattern signal that is a video signal for use in performing maintenance of the image forming unit. When the synchronization signal is the normal synchronization signal, the video signal is output. When the synchronization signal is the pattern synchronization signal, the pattern signal is output.

Image forming apparatus that controls jetting of toner, image processing apparatus, control method therefor, and storage medium

A technique which enables reduction of time required for continuous printing performed by an image forming apparatus in a temperature rise suppression mode. A printer prints a plurality of pages based on print data received from a host computer. A temperature sensor detects internal temperature of the printer. A control unit controls the printer such that the printing is suspended when the internal temperature has risen to a shifting temperature, and the printing is restarted when the internal temperature has fallen to a normal restart threshold value during the suspension of the printing. The control unit calculates the number of remaining pages left unprinted when the printing is suspended, and sets the normal restart threshold value according to the calculated number of the remaining pages.

Printing apparatus capable of reducing time required for continuous printing and printing control method

The present invention provides an image processing apparatus for performing a process of transiting to a power-off state or sleep state in accordance with the connected state of an interface, a control method thereof, and a storage medium. To accomplish this, if a condition for changing the power state of this image processing apparatus is satisfied, the image processing apparatus confirms an interface which is able to communicate with an external apparatus, and determines whether the image processing apparatus can transit to the sleep state based on the confirmation result. If it is determined that the image processing apparatus transits to the sleep state, the image processing apparatus is transited to the sleep state. If it is determined that the image processing apparatus does not transit to the sleep state, the image processing apparatus is turned off.

Image processing apparatus, control method thereof, and storage medium

An image forming apparatus which makes it possible to save energy during the operation of a temperature rise control mode, and is capable of realizing energy saving without degrading performance by making the image forming apparatus ready for printing when returning from the temperature rise control mode. A temperature sensor detects internal temperature of the image forming apparatus. When the internal temperature of the image forming apparatus has reached a temperature at which the apparatus should shift to the temperature rise control mode during execution of printing, the printing operation is stopped. In stopping the printing operation, the image forming apparatus is shifted to an energy saving mode.

Image forming apparatus capable of saving energy, method of controlling the same, and storage medium

An image forming apparatus which makes it possible to prevent interruption of printing due to shift to a temperature rise control mode and interruption of printing for execution of a cartridge replacement operation due to running-out of toner from occurring separately during execution of continuous printing. A temperature sensor detects that the internal temperature of the image forming apparatus has become equal to or higher than a predetermined temperature. The image forming apparatus also detects execution of toner cartridge replacement. When the temperature sensor detects, during execution of printing, that the internal temperature has become equal to or higher than the predetermined temperature, the image forming apparatus stops the printing being executed. Further, when execution of toner cartridge replacement is detected during suspension of the printing, the image forming apparatus resumes the printing being suspended.

Image forming apparatus capable of controlling printing interruption, method of controlling the same, and storage medium

The object is to make alignment of liquid crystals more uniform by reducing alignment disorder when a voltage is applied and to improve the display quality. A liquid crystal display element comprises a first electrode (), a second electrode () opposed to the first electrode, and a liquid crystal layer provided between the first electrode and the second electrode and having alignment of liquid crystal in the voltage-off state being vertical alignment, wherein either one of the first electrode and the second electrode is provided with a plurality of regularly disposed L-shaped slits, and the L-shaped slits () are formed so that at least within an area where the first electrode and the second electrode overlap each other, the electrode provided with the slits, is divided into a plurality of rectangular sub-pixel electrodes each having connection portions at three corners for connection to adjacent sub-pixel electrodes.

Liquid crystal display element

If an image is shifted in increments of pixels according to scan line changing points, the printed image suffers from jaggies or boundaries at positions corresponding to the scan line changing points. The jaggies or boundaries are also produced when a 1/2 speed or a 1/3 speed obtained by varying the process speed is used. Consequently, it has been impossible to obtain high-quality output images. An image forming apparatus is offered which has a printing unit operating to print at different process speeds and a control unit for controlling the output range of output image data for each line according to the process speeds. When the process speed in use is lower than a normal process speed, a part of 1 line of image data is outputted divisionally at timings at which lines from which image is not usually outputted at this low process speed are scanned.

Image forming apparatus, method of controlling same, and storage medium

An image processing apparatus includes a decompression unit () that is configurable by dynamic reconfigurable logic into either a first decompression circuit () or a second decompression circuit () that has a slower decompression speed and a lower power consumption than the first decompression circuit (), a buffer unit () that temporarily stores image data decompressed by the decompression unit () to be supplied to an engine unit, and a detection unit () that detects a data amount accumulated in the buffer unit (). In accordance with the data amount detected by the detection unit (), the decompression unit () carries out reconfiguration into the first or second decompression circuit ().

Growing community of inventors

Kawasaki, Japan

Yuji Soda