Fuji Xerox Co., Ltd.

Yosuke Takebe

Hirofumi Ishii

Hirotaka Mori

Mitsugu Kamio

Kazuaki Shintani

Shigekazu Yamagishi

Akihiko Tanaka

Tohru Yamano

Hiroshi Yoshihara

Yoshito Ashihara

Shinichi Gono

Masanori Konno

Mayumi Tada

The present invention provides an image reading apparatus that includes: a photoelectric sensor including plural reading pixels aligned in one direction and output an electric signal depending on the amount of light from an image on the document; a read control section that reads a document image with the photoelectric sensor in accordance with a read instruction, and obtains image data; a black correction section that performs a black correction to adjust an output under dark condition of each reading pixel to a value within a predetermined range, the output under dark condition being an electric signal output when the amount of light input is zero; and a black correction execution determining section that determines whether to perform the black correction, when the read interval between each two document sheets of the multi-page document is equal to or shorter than a predetermined period of time.

Image reading apparatus, black correction executing method, and a computer-readable medium storing black correction executing program

There is provided a data processing device that includes an obtaining unit that obtains a first image data set, a second image data set generated by reading an image formed using the first image data set, and a property data set indicating the properties of a recording medium on which the image is to be reproduced. The data processing device also includes a specifying unit that determines a threshold for a density difference between the first image data set and the second image data set, wherein the threshold depends on the property data set. The specifying unit also determines an error area where the density difference between images expressed by the first and second image data sets is equal to or greater than the threshold.

Data processing device, image forming device, system, and a computer-readable recording medium for determining whether or not image is properly formed on recording medium

An image forming apparatus, such as a copier or a printer, in which recyclable components to be discarded are recycled in newly producing an image forming apparatus. The image forming apparatus includes a first image forming section for forming an image of first type, a control board and a first drive circuit. The first drive circuit drives the first image forming section. The first drive circuit is connected to the control board. The control board has a connection section to be connected to a second board on which a second drive circuit for driving a second image forming section is mounted. The second image forming section forms an image of second type.

Image forming apparatus and control board thereof, method for recycling the image forming apparatus, and method for recycling the control board

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Kanagawa, Japan

Yosuke Takebe