Canon Kabushiki Kaisha

Junichi Goda

Masanori Ichikawa

Minoru Kambegawa

Yosuke Obayashi

Toshihisa Okutsu

Daiki Ikari

Makoto Kikugawa

Yasushi Shinto

Takahiro Haraguchi

Hidetoshi Tanno

A first exposure head forms an image corresponding to a first color based on a first synchronization signal. A second exposure head forms the image corresponding to a second color based on a second synchronization signal. A period of the first synchronization signal in a case where the first exposure head is to form the image for a second surface of a sheet is shorter than a period of first synchronization signal in a case where the first exposure head is to form the image for a first surface of the sheet. A period of the second synchronization signal in a case where the second exposure head is to form the image for the second surface is shorter than a period of the second synchronization signal in a case where the second exposure head is to form the image for the first surface.

Image forming apparatus for forming image using plurality of exposure heads

An image printed on a recording sheet is read, and the read image is displayed on a display unit. An instruction to use the displayed image as a correct answer image is accepted, and an image generated from the image that the instruction to use is accepted is registered as the correct answer image. A printed image is verified by comparing the printed image with the registered correct answer image.

Image forming apparatus to verify printed image with master image, image forming method, and storage medium

A verification apparatus includes a controller to display a screen in which a reference image as a verification target image is user selectable, to set, based on user input and. on the displayed reference image, a feature point of the reference image, and a reference region of a predetermined pattern formed in advance on a recording medium on which the verification target image is to be formed, to extract the set feature point from a read image, to specify, based on a positional relationship between the feature point and the screen set reference region, from an image position of the extracted feature point, a first region on the read image, indicating a region where the predetermined pattern should have been formed, and a second region other than the first, and to perform verification for the first region by a first algorithm, and for the second region by a second algorithm.

Verification apparatus, control method therefor, and non-transitory computer-readable storage medium that perform verification for a first region by a first algorithm and for a second region by a second algorithm

An apparatus acquires a plurality of candidate correct answer images for generating a correct answer image that is used for image quality evaluation, and detects a candidate correct answer image to be excluded from the acquired plurality of candidate correct answer images, based on differences between the acquired plurality of candidate correct answer images.

Apparatus, method, and storage medium

An apparatus includes an output unit configured to output a printed material of a verification image in a case where a condition is satisfied, an obtainment unit configured to obtain a verification result based on a comparison between a read image of the printed material of the verification image and a correct answer image, and a control unit configured to control printing based on the verification result.

Apparatus and method for performing sheet discharge control of a printed material based on a determination result

A correct image and print settings are registered in association with each other, the registered correct image is selected based on print settings of a verification target image, and verification is performed by comparing the verification target image with the selected correct image.

Image forming apparatus and image forming method to verify target image using corrected image

A device according to at least one embodiment of the present disclosure is configured to: attach identification information to a correct image candidate, which is a candidate for a correct image to be used in image quality determination; instruct printing of the correct image candidate to which the identification information is attached; and display the identification information attached to the correct image candidate in association with a preview image of the correct image candidate.

Image forming apparatus, verification apparatus, information processing method, and storage medium

An information processing apparatus having at least a first controller and a second controller. The second controller includes a CPU and a first storage for storing, in a non-volatile manner, a first program to be executed by the CPU. When the information processing apparatus is started up, the first controller verifies a presence or absence of alteration of the first program stored in the first storage, and causes the CPU to start up after confirming by the verification that the first program has not been altered.

Information processing apparatus and method of controlling the same

An information processing apparatus includes a control unit to execute a program, a first storage unit, a second storage unit, and an output unit. The first storage unit stores a first program to be executed by the control unit. The second storage unit stores a second program to be executed by the control unit. The output unit receives, from the control unit, a read command for reading the second program from the second storage unit. The output unit output, to the second storage unit, a corresponding command corresponding to the received read command and corresponding to an operation mode having been set to the output unit. Before transmitting, to the output unit, the read command for reading the second program from the second storage unit, the control unit sets the operation mode of the output unit according to the first program stored in the first storage unit.

Information processing apparatus and control method thereof and program regarding reading a boot program

An image printed on a recording sheet is read, and read images excluding a defective image are displayed on a display unit. An instruction to use a displayed image as a correct answer image is accepted, and an image generated from the accepted image is registered as a correct answer image to be used for verification.

Image forming apparatus with registered correct answer image to verify printed image, image forming method, and storage medium

To accomplish this, this memory access system monitors a use-memory-bandwidth which indicates a total of memory bandwidths used between a memory and a plurality of masters, and determines whether the use-memory-bandwidth is equal to or larger than the first threshold. Based on the above-described determination result, this memory access system also restricts access to the memory by a master of low priority out of the plurality of masters.

Memory access system, method for controlling the same, computer-readable storage medium, and image forming apparatus

An information processing apparatus is configured to correctly detect a polygon face of a mirror being scanned even when noise occurs in a synchronization signal. The information processing apparatus is connected to an image forming apparatus including a laser light source configured to receive image data and output light; a photosensitive member; a polygon mirror, which has a plurality of reflection faces, and is configured to rotate to deflect a laser beam through use of the plurality of reflection faces, to thereby scan the photosensitive member; and a generator configured to generate a marking BD (beam detection) signal based on the deflected laser beam. The information processing apparatus receives a marking signal and determines whether or not the received marking signal is a signal corresponding to a specific reflection face among the reflection faces of the polygon mirror.

Information processing apparatus and image forming apparatus

An image reading apparatus, comprising a memory that can transition from a normal mode to a power saving mode based on an inputted control signal, and a control unit that controls the control signal based on a synchronization signal that indicates a timing at which an image processing module outputs image data to a reading unit or a print unit.

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Kawasaki, Japan

Junichi Goda