Pfu Limited

Satoshi Sakai

Hironaga Hongawa

Shigeharu Okano

Akihiko Inamoto

Yutaka Nakashima

Satoshi Miyamoto

Tadashi Nishikawa

Masanari Takabatake

Motoharu Ichida

Seiichi Takeda

Satoru Moto

Hitoshi Terashima

Shigeki Uesugi

Yasuhiro Matsue

Mitsuru Shimono

Masanobu Hongo

Masashi Matsumoto

Takumi Nakayama

Isao Nagata

Hitoshi Asai

Eri Yamanishi

Hirohito Mukaiyama

Norihiro Yamasaku

Kiyoto Kosaka

Satoshi Kubo

Jiyun Du

Hideaki Shibata

Yasuhiko Kishimoto

Tatsuo Nozaki

Yasunori Taniguchi

Takayuki Kawanaka

Koichi Kitagawa

An image processor comprising a control unit, wherein the control unit includes an obtaining unit that obtains image data generated as a result of reading a document by a reader in which a predetermined document reading condition is set; a selecting unit that allows a user to select an use of the image data obtained by the obtaining unit out of a plurality of the uses set in advance; a processing unit that processes the image data obtained by the obtaining unit according to an image processing condition suitable for the use selected by the selecting unit; and a transferring unit that transfers the image data after being processed by the processing unit to an application suitable for the use selected by the selecting unit.

Image processor, image processing method, and computer program product

A cleaning apparatus for a liquid-development electrophotographic apparatus in which, after a toner image formed on a surface of an intermediate transfer member by use of a liquid developer is transferred to a printing medium, the liquid developer remaining on the intermediate transfer is removed and collected. The cleaning apparatus includes a cleaning-liquid application device for applying a cleaning liquid to the intermediate transfer member which has transferred an image to the printing medium; a bias voltage application device for applying a bias voltage opposite in polarity to charged toner particles of the developer to the intermediate transfer member; and a collection device for removing the cleaning liquid which has been applied to and the residual developer which remains on the intermediate transfer member from the intermediate transfer member without transfer of an image to the printing medium, and collecting the removed cleaning liquid and residual developer.

Method and device for cleaning liquid development electrophotographic device

A liquid-development electrophotographic apparatus forms on a toner-image-bearing body a plurality of color images developed by a plurality of developing units, one for each color, that use liquid toner. One or more carrier-removing units for removing excessive carrier from a toner layer that forms a toner image are disposed downstream of each developing unit and upstream of the next developing unit disposed upstream of the former developing unit with respect to a process progress direction. Each carrier-removing unit includes two or more conductive collection rollers to which a bias voltage is applied in such a direction as to press toner against the toner-image-bearing body and which is brought into contact with the toner-image-bearing body. The upstream roller is rotated in the same direction as the direction of surface movement of the toner-image-bearing body, whereas the downstream roller is rotated in the opposite direction. The result is that influence of carrier on the already transferred image is suppressed, and hence occurrences of irregular transfer of the images and occurrences of disturbance of the already transferred image are minimized.

Liquid development electrophotographic device

In the present invention, a toner image produced through a development process of supplying a liquid toner onto an image bearing body bearing an electrostatic latent image is transferred from the image bearing body onto an intermediate transfer body and then transferred from the intermediate transfer body onto a printing medium by use of a backup roller in a transfer-and-fixation zone. The printing medium is preheated to a temperature required for transfer and fixation before the printing medium reaches the transfer-and-fixation zone. No heating means is provided in the transfer-and-fixation zone, and the intermediate transfer body and the backup roller are pressed against each other at a high pressure ranging from 10 kg/cm to 60 kg/cm . Alternatively, the intermediate transfer body is provided with heating means; resin for use in the liquid toner has a softening temperature not higher than withstand temperatures of members other than the intermediate transfer body such as a photosensitive drum; and the intermediate transfer body is heated to a temperature not lower than the softening temperature of the resin and not higher than the withstand temperatures of the other members.

Transfer-and-fixation system with preheated printing medium for creating images using liquid-development electrophotographic apparatus

A liquid-development electrophotographic apparatus utilizes a nonvolatile, high-viscosity, high-concentration liquid toner as a liquid developer. A developing section is in contact with photosensitive drums , on which an electrostatic latent image is formed, so that the liquid developer is supplied onto photosensitive drums - . Toner particles contained in the liquid developer adhere to the photosensitive drums - according to an electric field established between the developing section and the photosensitive drums - to form toner images. The toner images are transferred from the photosensitive drums - to an intermediate transfer section. A transfer-and-fixation section includes a heater to melt-transfer the toner images onto the printing medium. A development section is disposed at a lower portion of the apparatus to prevent smudging of the printing medium and the intermediate transfer section even when the liquid toner spills.

Liquid-development electrophotographic apparatus

A liquid-development full-color electrophotographic apparatus utilizes a development section having a liquid toner as a liquid developer to form a toner image according to an electric field established between the development section and a photosensitive drum. The toner image is transferred from the photosensitive drum onto an intermediate transfer roller according to an electric field established between the intermediate transfer roller and the photosensitive drum, from the intermediate transfer roller to an intermediate transfer belt, and then to a transfer-and-fixation section, which melt-transfers the toner image onto a printing medium. A voltage controlled according to electric characteristics of each color toner is applied to the corresponding photosensitive drums while the roller is grounded. A toner cohesion enhancement unit is provided for enhancing the degree of toner cohesion of a toner image transferred and reverse transfer is suppressed.

Liquid-development full-color electrophotographic device

Provided are an applicator roller for conveying and applying liquid toner onto a developing roller in the form of a level, thin layer, and a conductive blade which comes into contact with a liquid toner layer on the developing roller. A predetermined amount of liquid toner passes through a gap between the conductive blade and the developer roller; and voltage is applied to the conductive blade so as to establish a state such that toner particles contained in the liquid toner are sparsely scattered in a surface region of a level, thin toner layer on the developing roller. Subsequently, the liquid toner, whose surface region is in a state such that toner particles are sparsely scattered, is brought into contact with an image bearer body for performing development.

Liquid developing electrophotographic device

A toner image is transferred from a photosensitive member onto an intermediate transfer belt . Toner particles transferred onto the intermediate transfer belt are melted through application of heat, and the molten toner is transferred onto a printing medium. A carrier-removing roller is disposed downstream of a position where a toner layer on the intermediate transfer belt is melted through application of heat. Through utilization of a phenomenon that toner particles (resin component) are melted and integrated in a heating process and a phenomenon that the carrier solvent (liquid component) is isolated in the heating process, the carrier solvent is removed efficiently. Also, there is disposed at the position of the heating process a carrier-removing roller for removing the carrier solvent from the intermediate transfer belt while the toner layer on the intermediate transfer belt is being melted through application of heat.

Electrophotographic device of liquid toner developing type

It is an object of the present invention to prevent a sheet of continuous-form paper from slackening when it is fed back in a printer capable of feeding both sheets of continuous-form paper and cut-form paper. According to the method for feeding back a sheet of continuous-form paper (,) of the present invention, in a paper feed unit including a pin feed device (,) arranged in an upstream of the continuous-form paper feed passage and also including a friction feed device (,) in which both the pin feed device (,) and the friction feed device (,) feed the sheet of continuous-form paper (,) and a circumferential speed of the friction feed device (,) is a little higher than that of the pin feed device (,), a first amount of feed is set by which the sheet of continuous-form paper is not loosened between the friction feed device (,) and the pin feed device (,) and also a second amount of feed is set which is larger than a difference between an amount of feed of the friction feed device (,) and an amount of feed of the pin feed device (,) when the sheet of continuous-form paper is fed back by the first amount of feed, and the sheet of continuous-form paper is fed back by the first amount of feed when both the friction feed device (,) and the pin feed device (,) are simultaneously reversed, and the friction feed device (,) is normally rotated by the second feed amount under the condition that the pin feed device is stopped. The sheet of continuous-form paper (,) is fed back by repeating the above reverse and the normal rotation.

Paper feed method and apparatus

It is an object of the present invention to prevent a sheet of continuous-form paper from slackening when it is fed back in a printer capable of feeding both sheets of continuous-form paper and cut-form paper. According to the method for feeding back a sheet of continuous-form paper (6) of the present invention, in a paper feed unit including a pin feed device (7) arranged in an upstream of the continuous-form paper feed passage and also including a friction feed device (4, 5) in which both the pin feed device (7) and the friction feed device (4, 5) feed the sheet of continuous-form paper (6) and a circumferential speed of the friction feed device (4, 5) is a little higher than that of the pin feed device (7), a first amount of feed is set by which the sheet of continuous-form paper is not loosened between the friction feed device (4, 5) and the pin feed device (7) and also a second amount of feed is set which is larger than a difference between an amount of feed of the friction feed device (4, 5) and an amount of feed of the pin feed device (7) when the sheet of continuous-form paper is fed back by the first amount of feed, and the sheet of continuous-form paper is fed back by the first amount of feed when both the friction feed device (4, 5) and the pin feed device (7) are simultaneously reversed, and the friction feed device (4, 5) is normally rotated by the second feed amount under the condition that the pin feed device is stopped. The sheet of continuous-form paper (6) is fed back by repeating the above reverse and the normal rotation.

Paper feed method and apparatus for a printer using a main body flap and

Paper feed method and apparatus for a printer

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Kanazawa, Japan

Satoshi Sakai