Ricoh Company, Ltd.

Yuichi Sakurada

Nobuyuki Satoh

Daisaku Horikawa

Masato Kobayashi

Tatsuhiko Okada

Mamoru Yorimoto

Suguru Yokozawa

Yasuyuki Suzuki

Arata Suzuki

Yasuo Sakurai

Tomonori Kimura

Hiroshi Matsumoto

Kenji Morita

Masaya Kawarada

Tomohiro Sasa

Hiroshi Takahashi

Hideaki Suzuki

Makoto Moriwaki

Kazushi Takei

Tomokazu Kanzawa

Satoshi Iwanami

Ryo Honda

Masayuki Fujii

Akito Yoshimaru

Masahiro Shigemoto

Tatsuya Ishii

Daisuke Sawada

Norikazu Taki

Masahiro Hiranuma

Takayuki Shibata

Hiroshsi Takahashi

An information processing apparatus includes a central processing unit (CPU), a plurality of field-programmable gate arrays (FPGAs) connected to the CPU to communicate with the CPU, and a plurality of memories provided in a one-to-one relationship with the plurality of FPGAs. Each of the plurality of memories is configured to store configuration data of a corresponding one of the plurality of FPGAs. One of the plurality of FPGAs is configured to update the configuration data of each of the plurality of FPGAs stored in a corresponding one of the plurality of memories.

Information processing apparatus and configuration method

An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.

Image capturing unit, color measuring device, image forming apparatus, color measuring system and color measurement method for capturing a reference chart and a subject

Image capturing device and color measurement method for capturing a reference chart and a subject

An image capturing apparatus includes: a casing having an opening; a light source arranged inside the casing; a sensor arranged inside the casing and configured to capture, through the opening, an image of an object present outside the casing while the light source is on; and a distance calculator to calculate a distance between the casing and the object, based on an image that has been captured by the sensor and contains, within an image region of the object defined by the opening, a high-luminance region and low-luminance regions located more outside than the high-luminance region.

Image capturing apparatus, image forming apparatus, distance measuring method, and computer-readable recording medium

A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.

Distance measuring device, image forming apparatus, and distance measuring method

An image forming apparatus includes a recording head in which a plurality of nozzles for discharging liquid droplets; and a pattern forming unit configured to form a test pattern used for positional deviation adjustment including a first pattern serving as a reference pattern and a second pattern serving as an adjustment pattern. The first pattern and the second pattern each are a linear pattern that is parallel to a nozzle arrangement direction and has a disconnected portion. The disconnected portion of the first pattern and the disconnected portion of the second pattern are shifted from each other in the nozzle arrangement direction.

Image forming apparatus with improved visibility for a print test pattern

Image capturing apparatus, color measuring device, image forming apparatus, and color measuring system for capturing a reference chart and a subject

An image forming apparatus includes a recording-head carrier including a recording head for ejecting a liquid droplet onto a recording medium, a relative moving unit configured to relatively move the recording-head carrier and the recording medium; an image recording unit configured to drive the recording head by a driving signal having a driving waveform to eject liquid droplets toward the recording medium while relatively moving the recording-head carrier and the recording medium; a driving-waveform determining unit configured to determine the driving waveform of the driving signal based on a detected temperature near the recording head; a drive-timing determining unit configured to determine drive timing at which the recording head is driven by the driving signal, based on the detected temperature; and a drive control unit configured to set the driving waveform and the drive timing to the image recording unit to drive the recording head.

Image forming apparatus, image forming method, and computer-readable storage medium

Image capturing unit, color measuring device, image forming apparatus, color measuring system and color measurement method capturing a subject outside of the image capturing unit

A nozzle testing device includes: a two-dimensional image sensor to capture an image of a pattern formed on a recording object by discharging ink from a nozzle row while moving the nozzle row and the recording object relative to each other in a direction orthogonal to the nozzle row; a light source unit provided such that regularly reflected light by the pattern forms a regular reflection area in the image of the pattern captured by the two-dimensional image sensor; and a detection unit to analyze the image to detect discharge failure of the nozzles. The regular reflection area is formed in the image such that a dimension in a direction corresponding to the direction of relative movement between the nozzle row and the recording object is greater than a dimension in a direction orthogonal to the direction corresponding to the direction of relative movement in the image.

Nozzle testing device and image forming apparatus

An image forming apparatus includes a printing unit that prints at least one object image using a color material; a color information acquiring unit that acquires color information of the object image; and a control unit that starts one of colorimetry of the object image using the color information acquired by the color information acquiring unit and color adjustment of the printing unit after a variation amount of color information of the object image measured at different points of time is equal to or smaller than a predetermined threshold.

Image forming apparatus, calibration method, and drying determination method

An image capturing unit includes a sensor section that images a predetermined range including a subject; a reference chart section that is imaged by the sensor section with the subject; and an illumination light source that illuminates the subject and the reference chart section. The illumination light source is arranged at a position where a mirror reflection region that mirror reflects light entering from the illumination light source to the sensor section is outside a region of the subject and the reference chart section.

Image capturing device that images a region including a reference chart and a subject

Image forming apparatus, method for forming test pattern, and computer program product

An image capturing device includes a sensor unit that captures a predetermined range including a subject; a reference chart that is captured by the sensor unit together with the subject; an illumination light source that illuminates the subject and the reference chart; a lens member including one or more lenses arranged in an optical path of reflected light extending from the subject and the reference chart to the sensor unit; and a lens moving unit that moves at least one lens of the lens member so as to change a position thereof in a direction along the optical path.

Image capturing device, color measuring device, color measuring system, image forming apparatus, and color measuring method

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Tokyo, Japan

Yuichi Sakurada