Ricoh Company, Ltd.

Midori Aida

Shinji Yamakawa

Takashi Saitoh

Hiroshi Takahashi

Yukio Sakano

Michiyoshi Tachikawa

Kazuo Murai

Takeshi Ukai

Yoshio Kaneko

Toshiya Hikita

Tadato Hashiguchi

Shigeo Kurotaka

Kyoji Omi

Hiromi Okubo

Kouji Ishigaki

Hiroyasu Sumida

Haruhiko Fukuda

Makoto Hidaka

Yutaka Hasegawa

Yasuyuki Nomizu

Kunio Hayakawa

Masayuki Hayashi

Masaaki Ito

Tomio Sasaki

Yoshimichi Kanda

Wataru Nara

Kouichi Noguchi

Yasushi Kamo

Keiichi Nomura

Hajime Ichimura

Hajime Hojo

Ouji Maruyama

Toshihiko Kuroi

An original image comprises a printed region on which a predetermined printed matter is realized and a background region on which no printed matter is realized. The shape of a peripheral zone in the original image comprises the shape of the background region, which shape exists particularly at the peripheral region of said original image. It is determined whether or not the original image comprises the special document by detecting the peripheral zone. Further, the original image has an outer-frame region, having a predetermined shape at the peripheral region of the original image. The determination is carried out using a result of measuring the width of the outer-frame region. Further, the width of the outer-frame region comprises a width along a direction substantially perpendicular to a direction extending along the outline of the original image.

Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system

An original image comprises a printed region on which a predetermined printed matter is realized and a background region on which no printed matter is realized. The shape of a peripheral zone in the original image comprises the shape of the background region, which shape exists particularly at the peripheral region of said original image. It is determined whether or not the original image comprises the special document by detecting the peripheral zone. Further, the original image has an outer-frame region, having a predetermined shape, at the peripheral region of the original image. The determination is carried out using a result of measuring the width of the outer-frame region. Further, the width of the outer-frame region comprises a width along a direction substantially perpendicular to a direction extending along the outline of the original image.

Original-discrimination system for discriminating special document, and

A remote-controlled copying apparatus includes a main copying part, a storage unit for storing image signals from the main copying part, a facsimile part connected to a first telephone line for receiving image signals from an external facsimile unit and for transmitting the image signals of the storage unit to an external facsimile unit, a facsimile control part connected to a second telephone line for receiving a first tone signal from an external telephone unit after a ringing signal is received from the external telephone unit, and for repeatedly transmitting a set of control signals to the external telephone unit in response to the first tone signal, a first conversion part for converting a tone signal into a control signal so that the control signal is transmitted to the external telephone unit, a second conversion part for converting a control signal into a tone signal, and a control part for carrying out a remote control operation of the copying apparatus by controlling the facsimile control part in accordance with a tone signal received from the external telephone unit.

Remote-controlled copying apparatus having facsimile interface unit

A color image input apparatus or scanner which has three color input devices which input three color images and then convert color image optical signals to analog electric signals. Three analog/digital convertors convert the analog signals to digital signals and three shading correction devices execute shading correction for the signals. Line correction devices execute line delays for the signals and then correct color difference of the three colors in the sub-scanning direction. There are three color dot or pixel correction devices which shift the position of each dot of each color within .+-.1 dot in the main scanning direction; that is each position of re-sampling or correction in the main scanning direction determines data values or correction information from correction coefficients of each position of the re-sampling. Three color output devices which output three color images. The color image apparatus can correct the color image difference in the main scanning direction.

Color image input apparatus

A composite image forming apparatus includes a scanning part for obtaining image data for each dot by scanning a document in a main scanning direction and scanning the same in a sub scanning direction, a character generating part for generating character data indicating either a character or a numeric character, an image composition part for obtaining composite image data by combining the character data with the image data of the scanned document, an image forming part for carrying out an image forming process based on the composite image data so that a composite image is formed for each copy of the document, and a character setting control part for changing the respective character data each time a composite image is formed to make a copy of the document when an image forming process is repeatedly carried out with respect to the same document to make a plurality of copies.

Composite image forming apparatus for automatically combining document

Image forming apparatus which adds identification information to

An image processing apparatus for image compression and decompression includes a smoothing part for smoothing image data of a reconstructed image by using a smoothing filter selected from among a plurality of smoothing filters having different smoothing effects, an averaging part for producing a set of values of averages of coefficients produced through discrete cosine transformation with respect to a plurality of blocks in the reconstructed image so that a distribution of the averages of the coefficients for a target block is generated, and a selection part for generating a signal to enable the smoothing part to select the smoothing filter by detecting whether or not peak values in the distribution of the averages of the coefficients, generated by the averaging part, appear substantially on a diagonal line of the target block passing a lowest-order position through a highest-order position of the target block.

Image processing apparatus for preventing occurrence of moire in a

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Yokohama, Japan

Midori Aida