Canon Kabushiki Kaisha

Masato Oshima

Mitsuhiro Ono

Tetsuya Suwa

Fumihiro Goto

Takao Aichi

Kazuyuki Masumoto

Tetsuya Kawanabe

Akihiko Hamamoto

Makoto Hibi

An image printing apparatus and its control method for printing an image based on image data from an image data source. In a case where a correction condition is set for the image data, if the image data is a new format file image data including predetermined information, correction processing is performed in accordance with the set correction condition. If the image data is not a new format file image data, the correction processing in accordance with the correction condition is not performed.

Image printing apparatus, image printing system and control method

A print-direct printer for receiving and printing JPEG data from a DSC divides the area of a memory into a plurality of blocks, stores the received JPEG data in the memory on a block-by-block basis and decompresses the compressed JPEG data that has been stored in the memory, thereby expanding the JPEG data into image data. If it is determined that JPEG data to be expanded next has not been stored in the memory, then the DSC is requested for JPEG data corresponding to at least one block, in an amount that is less than the maximum amount of data transferable from the DSC, in addition to the JPEG data to be expanded.

Image printing apparatus and image printing control method

An information processing apparatus comprising a power unit, a first control unit and a second control unit in which power supply is controlled based on a control signal from the first control unit, wherein when electric power supply from the power supply unit has been stopped and then the electric power supply from the power supply unit has been started, if update of a memory of the first control unit has been instructed, the first control unit transfers the content of a flash ROM in the first control unit into the memory thus updates the content of the memory. At this time, the second control unit is kept in a power-off status by a control signal line until the update of the memory is completed. After the completion of the update, power-on is notified by the control signal line, and the reset status of the second control unit is released.

Information processing apparatus and memory update method in the apparatus

Printing apparatus and printhead characteristic data selection method, which can appropriately handle printhead characteristic data under various environments. Judgment is made as to whether or not characteristic data of a printhead mounted to a printing apparatus is stored in an EEPROM of the printhead, an EEPROM of the printing apparatus, or a host computer. Based on the judgment result, the printhead characteristic data is inputted from the memory or host in accordance with a predetermined priority order. Validity of the characteristic data is determined each time the printhead characteristic data is inputted in accordance with the predetermined priority order. Based on the judgment result or determination result, the printhead characteristic data or average printhead characteristic data stored in another storage medium provided in the printing apparatus is selected.

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Kanagawa, Japan

Masato Oshima