Canon Kabushiki Kaisha

Tadao Saito

Satoshi Wada

Makoto Akahira

Hiroshi Fujiike

Yoshitomo Marumoto

Nobuhito Yamaguchi

Hideto Yokoi

This invention is directed to reducing power consumption even when there is a great amount of power consumed by a root complex in a printing apparatus that employs a PCI Express architecture. To accomplish this, a printing apparatus that includes a controller capable of switching between a root complex and an endpoint and an accelerator controller serving as a root complex performs the following processing. More specifically, in the power saving mode, the power source of the accelerator controller is turned off and the controller is set as a root complex. Power consumption in the power saving mode can be greatly reduced, and a return sequence from the power saving mode can be executed.

Image processing apparatus, printing apparatus and controlling method in image processing apparatus

This invention is directed to enhancement of flexibility when connecting an add-in card conforming to the PCI-Express specification. More specifically, the operation mode of the system board of a printing apparatus is configured to cope with both a root-complex and end-point. When an add-in card is inserted into an extension slot, the type of add-in card is discriminated by confirming the ON state of a detection pin. When the inserted add-in card operates as a root-complex, the system board is set to operate as an end-point. When the inserted add-in card operates as an end-point, the system board is set to operate as a root-complex.

Printing apparatus and operation setting method thereof

An apparatus includes a determining unit configured to determine whether a malfunction of relative movement between a document and an image reading unit reading an image of the document occurs when the document is read by the image reading unit while at least one of the document and the image reading unit is moved, a specifying unit configured to specify a position in image data of the image read by the image reading unit corresponding to a position where the malfunction occurs if the determining unit determines that the malfunction of relative movement occurs, and a control unit configured to cause an image display unit to display an image based on the image data to enable a user to discriminate the position specified by the specifying unit.

Image display control apparatus and image display control method

A method of instantly measuring the amount of ink discharged from a nozzle of an ink-jet type printhead in a single discharging operation comprises: a density measuring step of measuring the density of an ink dot formed by ink discharged from the printhead onto a glass plate,and a determining step of determining the amount of the discharged ink on the basis of the density of the ink dot measured in the measuring step.

Method and apparatus for measuring the amount of discharged ink, printing apparatus, and method of measuring the amount of ink discharged in the printing apparatus

The color filter manufacturing method for improving precision in correcting color unevenness of a screen surface by eliminating the influence of measurement errors and variance in the ink discharge amount, includes the steps of: coloring a coloring-target medium, using at least two different ink discharge densities, and measuring color densities of colored portions of the coloring-target medium; obtaining a relationship between the color density and ink discharge density based on the respective color densities of the colored portions colored by the at least two different ink discharge densities and corresponding ink discharge densities; and determining an ink discharge density which attains a desired color density based on the obtained relationship between the color density and ink discharge density, and discharging ink onto the color filter substrate at the determined ink discharge density, thereby coloring the color filter substrate.

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Kawasaki, Japan

Tadao Saito