Ricoh Company, Ltd.

Sony Corporation

Toho Rayon Co., Ltd.

Nissho Co., Ltd.

Nissan Shoji Co., Ltd.

Tatsuya Ishii

Satoshi Nakayama

Kimiharu Yamazaki

Kohta Aoyagi

Tohru Matsumoto

Ryosuke Ebinuma

Ryoh Ishitsuka

Daisuke Nikaku

Rie Suzuki

Masamoto Nakazawa

Hideyo Makino

Satoshi Iwanami

Osamu Inage

Yoshio Konno

Ryohma Ikemoto

Takayuki Shibata

Hideki Hashimoto

Susumu Mikajiri

Shinichiroh Wada

Tetsujiro Kondo

Satoshi Inoue

Yasushi Tatehira

Yuichi Sakurada

Nobuyuki Asakura

Tomoaki Suga

Wataru Niitsuma

Yukifumi Kobayashi

Yutaka Ohmiya

Tetsuya Ofuchi

Yuji Karikusa

Takahide Ayata

Yoshihisa Ashikawa

Takashi Toyama

Takayuki Kawamoto

Toshihiro Hamano

Noboru Hirano

Kohtaroh Oda

Takehiro Chiba

Nozomu Takahashi

Masanori Yamanaka

Taiichi Katoh

Haruyoshi Narita

Kohtaro Nemoto

Ryoh Ishizuka

Yoshiko Niki

An image reading device includes a reader, a transparent member, an opposing member, first and second conveyance rotators, and circuitry. The reader reads a sheet. The transparent member is disposed between the reader and the sheet. The opposing member is disposed facing the reader via the transparent member. The first conveyance rotator is disposed upstream from the reader in a conveyance direction of the sheet. The second conveyance rotator is disposed downstream from the reader in the conveyance direction. The circuitry cause the first conveyance rotator and the second conveyance rotator to convey a cleaning sheet at respective conveying speeds different from each other and bring the cleaning sheet into contact with at least one of the transparent member or the opposing member.

Image reading device and image forming apparatus incorporating the image reading device

An image reading device includes a sensor and circuitry. The sensor reads an image on a recording medium. The circuitry inspects the image and outputs an inspection result. The circuitry excludes an area of the recording medium as a first area from an area to be inspected, based on a type of the recording medium or a position of the recording medium with respect to a reading position at which the sensor reads the image, to determine a second area to be inspected. The circuitry outputs the inspection result based on the second area.

Image reading device and image forming apparatus incorporating same

An image inspector includes a recording device and circuitry. The reading device is configured to read an image on a recording medium. The circuitry is configured to determine whether the recording medium has a wrinkle and an edge folding based on a plurality of positions on the image on the recording medium read by the reading device satisfying a predetermined relation. The circuitry is configured to determine whether the recording medium has the wrinkle based on the predetermined relation, and then determine whether the recording medium has the edge folding based on the predetermined relation.

Image inspector for detecting at least one abnormality of a recorded medium and image forming system incorporating the image inspector

A colorimetric device includes: a white reference portion having: a first irradiation area; and a second irradiation area different from the first irradiation area; a light emitter including: a first light source configured to emit visible light to the first irradiation area; and a second light source configured to emit ultraviolet light to the second irradiation area; a sensor configured to detect the visible light reflected from the first irradiation area and the ultraviolet light reflected from the second irradiation area; and a processor configured to: measure colorimetric information of an object; and calibrate the colorimetric information of the object based on the visible light and the ultraviolet light detected by the sensor.

Colorimetric device, image forming apparatus, and calibration method

An image reading device includes an image reader and circuitry. The image reader is configured to read an image on a recording medium. The circuitry is configured to obtain defective image information and defect type information based on the image on the recording medium read by the image reader, and determine an abnormality of the image on the recording medium based on the defective image information and the defect type information.

A reading apparatus includes a reading device and processing circuitry. The reading device reads a recording medium. The processing circuitry outputs maintenance information based on read information read by the reading device.

Reading apparatus and image forming system for outputting maintenance information

A reading apparatus includes a reading device and circuitry. The reading device reads a recording medium in a direction intersecting a conveyance direction of the recording medium. The circuitry detects a reference image for cutting processing of the recording medium, based on read information read by the reading device.

Reading apparatus, processing apparatus, and image forming system configured to correct a reference image detection position

An image inspecting device includes an abnormality detector and circuitry. The abnormality detector is configured to detect an abnormality of an inspection object image. The circuitry is configured to set a non-detection area to be excluded from a detection object area within which the abnormality detector detects an image abnormality and set an area including an abnormality detection portion as the non-detection area when a detection result obtained by the abnormality detector satisfies a non-detection condition.

Image inspecting device and image forming apparatus incorporating the image inspecting device

A reading device and an image forming apparatus are provided. The reading device includes an image reading device configured to read an image on a recording medium being conveyed, a background device serving as a background image when the image is read by the image reading device, and a foreign-object detector configured to compare a first read image obtained as the background device is read by the image reading device with a second read image obtained as the background device and the recording medium are read by the image reading device to detect an attached foreign object. The image forming apparatus includes the reading device and an image forming device.

Reading device and image forming apparatus with foreign-object detection by comparing image from reading background with image from reading background and recording medium

An image abnormality detecting device includes an image reader, an abnormality detector, a pattern holder, and circuitry. The image reader is configured to read an image on a recording medium. The abnormality detector is configured to detect abnormality of the image based on read information of the image on the recording medium, read by the image reader. The pattern holder has a check pattern and is disposed within a reading area of the image reader. The circuitry is configured to inspect a detecting operation of the abnormality detector based on read information of the check pattern read by the image reader.

Image abnormality detecting device and image forming apparatus incorporating the image abnormality detecting device

An image reading device includes a background unit, a reading unit, and circuitry. The background unit is configured to be a background in reading of a recording medium and includes a first region that is black and a second region that is different from the first region. The reading unit is configured to read an image with the background unit as the background, and generate a read value based on a result of reading the image with the background unit. The circuitry is configured to correct the read value based on a reference value generated by the reading unit by reading the second region of the background unit.

An edge position detecting apparatus includes a light emitting device, a detecting device, and a calculating circuit. The light emitting device includes a plurality of light sources with different emission wavelengths. The light emitting device irradiates a conveyed object with linear light along a width direction of the conveyed object, the width direction being perpendicular to a conveying direction of the conveyed object. The detecting device detects, at a plurality of positions in the width direction of the conveyed object, intensity of reflected light of light emitted by the light emitting device. The calculating circuit calculates, based on a detection result of the detecting device, a position of an edge of the conveyed object in the width direction.

Edge position detecting apparatus and image forming apparatus

A color chart includes a first portion and a second portion. The first portion includes no patch. The second portion includes a plurality of patches having different densities or luminances. The plurality of patches includes a reference patch indicating a color having a reference density or luminance. The reference patch is adjacent to the first portion. The plurality of patches is located in order of increasing density from the density of the color indicated by the reference patch, decreasing density from the density of the color indicated by the reference patch, increasing luminance from the luminance of the color indicated by the reference patch, or decreasing luminance from the luminance of the color indicated by the reference patch.

Color chart, image forming apparatus, and reading device

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 reading device includes a first scanner, a second scanner, and circuitry. The first scanner is configured to read a first side of a recording medium. The second scanner is configured to read a second side of the recording medium. The circuitry is configured to generate a first correction value to correct misalignment between the first side and the second side. The circuitry is configured to input a second correction value. The circuitry is configured to correct an image based on the first correction value and the second correction value.

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Kanagawa, Japan

Tatsuya Ishii