Ricoh Company, Ltd.

Noritada Ohi

Masato Takahashi

Naoyuki Ishikawa

Katsuyuki Omura

Rie Nakamura

Masafumi Nagao

Akihiro Kakoi

Yoshinori Furuichi

Masanobu Yamagata

Hidemasa Morimoto

Miki Kouchi

Yoshiaki Oshima

Seiko Yamamoto

Reiji Yukumoto

A position detection device for detecting positions of a non-emitter and an emitter in a detection area includes one or more reflective members disposed around the detection area, illumination light sources to emit light toward the reflective member, light receiving sensors to receive light from the reflective member and light from the light emitter, and a control device to control the illumination light sources and the light emitter. Based on previous detection statuses of the non-light emitter and the light emitter, the control device sets a time ratio of a time of a non-light emitter detection mode to a time of a light emitter detection mode, and sets timings of the non-light emitter detection mode and the light emitter detection mode.

Position detection device, image display device and image display system

A coordinate detecting apparatus includes: a plurality of light-emitting and -receiving units arranged along an outer edge of the coordinate input area, the plurality of light-emitting and -receiving units each including a light-emitting part and a light-receiving part; at least one retroreflective member arranged along the outer edge of the coordinate input area; and a control unit to control the plurality of light-emitting and -receiving units to detect coordinates of a position of input made with a designation input unit in a first detection state or a second detection state.

Coordinate detecting apparatus, system, and coordinate detecting method

A projection system includes image projection apparatuses to project one image onto a projection face based on image information, a projection controller to divide the image information into a plurality of segment image data, and to instruct each of the image projection apparatuses to project corresponding segment image data, a positional deviation detector disposed at each of the image projection apparatuses to detect a positional deviation at the image projection apparatuses, an identification unit to identify which image projection apparatus requires a calibration processing; a projection unit to cause the identified image projection apparatus to project a calibration image information; an image capture apparatus to capture the calibration image information; and a calibration unit to calibrate the segment image data projected by the identified image projection apparatus based on the captured calibration image information.

Projection system, and information processing apparatus

An image forming apparatus includes a print-request information inputting unit, an image reading unit, a plurality of image forming units, a plurality of sheet feeding units, a memory unit and a control unit wherein the control unit reading out, when print-request information is inputted, ID information and device information from a memory unit and selects, based on the plural ID information, the device information and the print-request information, an optimum image forming unit that satisfies the print-request information. The control unit further causes the selected image forming unit to execute print processing.

Image forming apparatus including a print-request information inputting unit and image reading unit, and image forming method

An image forming apparatus includes two or more detachable components that are identical to each other and configured to perform at least part of a sequence of processes associated with forming of an image, a connection detection unit configured to detect attaching of the components, and a first control unit configured to control the sequence of processes, wherein a software-based controller for controlling one of the components is generated in response to detection by the connection detection unit of the attaching of the one of the components.

Image forming apparatus with a plurality of image forming units

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Saitama, Japan

Noritada Ohi