Canon Kabushiki Kaisha

Fujitsu Corporation

Tetsuya Takei

Ryuji Okamura

Yasuyoshi Takai

Hiroyuki Katagiri

Masahiro Kanai

Yasushi Fujioka

Junichiro Hashizume

Katsumi Nakagawa

Keishi Saitoh

Toshimitsu Kariya

Jinsho Matsuyama

Hiroshi Echizen

Takayoshi Arai

Hirokazu Otoshi

Shigehira Iida

Hirokazu Ohtoshi

Shigeru Shirai

Toshiyasu Shirasuna

Kiyoshi Taninaka

Hiroaki Niino

Morihisa Kawahara

Nobuo Kuwabara

Junji Wakihara

Michio Shimura

Keishi Saito

Tatsuyuki Aoike

Yoshiya Matsumoto

Hiroyuki Kawai

Shigeo Nonoyama

Minoru Takano

Yoshiki Nagasaki

Kunihiro Kitsu

Hiroshi Amada

Naoko Shirai

Minoru Kato

Satoshi Kojima

Teruo Misumi

Takehito Yoshino

Michio Ito

Hiroki Kisu

Yutaka Sato

Akira Nagahara

Yoshio Segi

Kazuhiro Kakuguchi

Nobuyuki Tanaka

Nobuyuki Kume

Takefumi Takahashi

Yoshio Yamaguchi

Hiroshi Kera

Kazuki Tanaka

Hideki Tada

Satoshi Seino

Hisashi Hanzawa

Hirokazu Ootoshi

It is an exemplified object of the present invention to provide an image-forming device that can form a high-quality multicolor image at relatively low cost. To achieve the above object, the inventive image-forming device includes an endless belt that conveys a recordable medium; plural image-forming units that form a toner layer on the recordable medium via the endless belt; and a fixer that fixes the toner layer on the recordable medium, and a first pressing force applicable to the recordable medium by a last image-forming unit at a downstream side along a direction in which the recordable medium is conveyed among the plural image-forming units is greater than a second pressing force applicable to the recordable medium by another image-forming unit adjacent to the last image-forming unit at the downstream side among the plural image-forming units.

Image-forming device having a plurality of image-forming units respectively apply the difference force to the recordable medium

An image forming device includes an image forming part which forms an image on a recording medium; a recording medium switchback portion which receives the recording medium on a first run, one side of which has been printed when passing the image forming part, and sends the recording medium for a second run; a recording medium path which communicates with the recording medium switchback portion so as to send the recording medium to and from the recording medium switchback portion; an inverted recording medium transfer path through which the recording medium is sent to the image forming part again with an upper surface and a lower surface of the recording medium reversed; and a recording medium transfer part which transfers the recording medium along the inverted recording medium transfer path. The image forming device is further provided with a first recording medium receiving portion which stores the recording medium one on another with a printed surface facing upwards; and a first recording medium ejection path which communicates with the recording medium receiving portion so as to send the recording medium to the first recording medium receiving portion.

Image forming device

An electrophotographic image forming apparatus includes an electrostatic latent image carrying body, an electric charger for uniformly electrifying the carrying body, an optical exposure unit to form an electrostatic latent image on the carrying body, a developer for developing the electrostatic latent image to form a toner image on the carrying body, a transfer unit for transferring the toner image from the carrying body onto a printing sheet, a fixing unit for fixing the toner image to the printing sheet, a cleaner for cleaning to remove residual toner from the carrying body and a toner returning mechanism for returning the residual toner removed by the cleaner to the developer. The developer includes a housing in which a toner chamber is defined, a developing roller rotatably mounted in the housing, an agitator rotatably mounted in the housing so as to be positioned in the toner chamber, a partitioning member provided in the housing for defining a carrier chamber adjacent to the developing roller. The toner returning mechanism includes a toner recirculator for recirculating the residual toner removed from the carrying body to the toner chamber.

Image forming apparatus having a toner cartridge

An image forming device includes an image forming part which forms an image on a recording medium; a stacker which stores the recording mediums one on another; a recording medium switchback portion which receives the recording medium on a first run, one side of which has been printed when passing the image forming part, and sends the recording medium for a second run; an inverted recording medium transfer path through which the recording medium is sent to the image forming part with an upper surface and a lower surface of the recording medium reversed; a recording medium transfer part which transfers the recording medium along the inverted recording medium transfer path; a recording medium position correcting part, located at the inverted recording medium transfer path, which corrects a position in a width direction of the recording medium, and a control means for controlling the recording medium position correcting part with a particular operation timing so that the recording medium position correcting part is operated while the printing means is transferred along the inverted recording medium transfer path by the recording medium transfer part.

Dual-sided image forming device with improved recording medium

An electrophotographic image forming apparatus includes an electrostatic latent image carrying body, an electric charger for uniformly electrifying, the carrying body, an optical exposure unit to form an electrostatic latent image on the carrying body, a developer for developing the electrostatic latent image to form a toner image on the carrying body, a transfer unit for transferring the toner image from the carrying body onto a printing sheet, a fixing unit for fixing the toner image to the printing sheet, a cleaner for cleaning to remove residual toner from the carrying body and a toner returning mechanism for returning the residual toner removed by the cleaner to the developer. The developer includes a housing in which a toner chamber is defined, a developing roller rotatably mounted in the housing, an agitator rotatably mounted in the housing so as to be positioned in the toner chamber, a partitioning member provided in the housing for defining a carrier chamber adjacent to the developing roller. The toner returning mechanism includes a toner recirculator for recirculating the residual toner removed from the carrying body to the toner chamber.

Electrophotographic image-forming

Image-forming apparatus comprising a process unit

A microwave plasma CVD method for continuously forming a large area and length functional deposited film, the method comprises: continuously moving a substrate web in the longitudinal direction by paying out it by a pay-out mechanism and taking up it by a take-up mechanism; establishing a substantially enclosed film-forming chamber by curving and projecting said moving substrate web to form a columnar portion to be the circumferential wall of said film forming chamber on the way moving from said pay-out mechanism toward said take-up mechanism; introducing a film-forming raw material gas through a gas feed means into said film-forming chamber; at the same time, radiating a microwave energy in said film-forming chamber by using a microwave applicator means, which is so designed that it can radiate a microwave energy in the direction parallel to the microwave propagating direction, to generate microwave plasma in said film-forming chamber, whereby continuously forming a deposited film on the inner wall face of said continuously moving circumferential wall to be exposed to said microwave plasma. A microwave plasma CVD apparatus suitable practicing said method.

Process for continuously forming a large area functional deposited film

An electrophotographic light receiving member having an outermost surface portion comprised of a non-single crystal material, characterized in that a region (a) containing at least a metal element selected from the group consisting of metal elements belonging to groups 13, 14, 15 and 16 of the periodic table and a region (b) substantially not containing said metal element are two-dimensionally distributed at said outermost surface of said light receiving layer. An electrophotographic apparatus provided with said electrophotographic light receiving member and an electrophotographic process using said electrophotographic light receiving member.

Electrophotographic light receiving member having an outermost surface

A light receiving member having a light receiving layer comprising a photoconductive layer and a surface layer disposed on a conductive substrate, wherein the photoconductive layer comprises, from the side of the substrate, a first photoconductive layer constituted by an amorphous material containing silicon atoms as a matrix, carbon atoms, hydrogen atoms and fluorine atoms, and a second photoconductive layer constituted by an amorphous material containing silicon atoms as a matrix, and at least one kind of atoms selected from hydrogen atoms and fluorine atoms, wherein the content of said fluorine atoms in the first photoconductive layer is from 1 to 95 atomic ppm based on the content of said silicon atoms.

Light receiving member with an amorphous silicon photoconductive layer

Electrophotographic photosensitive member provided with a light

An improved microwave plasma CVD process for forming a functional deposited film using a microwave transmissive window composed of a sintered alpha-alumina ceramics body containing alpha-alumina as a matrix comprised of fine particles with a mean particle size d satisfying the equation 0.5 .mu.m.ltoreq.d.ltoreq.50 .mu.m and with a ratio of .rho..sub.2 /.rho..sub.1 between the theoretical density .rho..sub.1 and the bulk density .rho..sub.2 satisfying the equation 0.800.ltoreq..rho..sub.2 /.rho..sub.1 .ltoreq.0.995.

Process for using microwave plasma CVD

A microwave plasma chemical vapor deposition apparatus for forming a functional deposited film on a plurality of Substrates which includes a substantially enclosed film-forming chamber comprising an outer wall having an end portion thereof provided with a microwave introducing window to which a waveguide extending from a microwave power source is connected, The film-forming chamber has a cylindrical discharge space encircled by a plurality of rotatable cylindrical substrate holders. Each of the cylindrical substrate holders has a substrate thereon. The cylindrical substrate holders are concentrically arranged in the film-forming chamber. The film forming chamber is provided with means for evacuating the film-forming chamber and means for supplying a raw material gas into the discharge space. The means for supplying the raw material gas comprises one or more gas feed pipes provided with a plurality of gas liberation holes capable of supplying a raw material gas radiately against each of the substrates. The gas feed pipes are longitudinally installed substantially at the center position of the discharge space.

Apparatus for preparing a functional deposited film by microwave plasma

An apparatus for continuously forming a functional deposited film with a large area according to a microwave plasma CVD process is described. The apparatus comprises the elements of a continuous traveling band-shaped member containing a conductive member along its length during which a pillar-shaped film-forming space capable of being kept substantially in vacuum therein is established by the use of the traveling band-shaped member as a side wall for the film-forming space, charging starting gases for film formation through a gas feed means into the film-forming space, and simultaneously radiating a microwave through a microwave antenna in all directions vertical to the direction of movement of the microwave so that microwave power is supplied to the film-forming space to initiate a plasma in the space whereby the film is deposited on the surface of the continuously traveling band-shaped member which constitutes the side wall exposed to the plasma.

Method and apparatus for continuously forming functional deposited films

A method for continuously forming a large area functional deposited film by a microwave plasma CVD process, said method comprises: continuously moving a substrate web in the longitudinal direction; establishing a substantially enclosed film-forming chamber having a film-forming space by curving and projecting said moving substrate web to form a columnar portion to be the circumferential wall of said film forming chamber on the way moving; introducing a film-forming raw material gas through a gas feed means into said film-forming space; at the same time, radiating or propagating microwave energy into said film-forming space by using a microwave applicator means capable of radiating or propagating said microwave energy with a directivity in one direction of microwave energy to propagate to generate microwave plasma in said film-forming space, whereby continuously forming a functional deposited film on the inner face of said continuously moving circumferential wall to be exposed to said microwave plasma. An apparatus suitable for practicing said method.

A light receiving member comprising a substrate and a light receiving layer disposed on said substrate, said light receiving layer having a stacked structure comprising a plurality of constituent layers each being composed of a non-single crystal material containing silicon atoms as a matrix and at least either hydrogen atoms or halogen atoms, characterized in that said light receiving layer has a region containing at least one kind of atoms selected from the group consisting of hydrogen atoms and halogen atoms at an enhanced concentration distribution in the thickness direction in the vicinity of at least one layer interface of the light receiving layer.

Light receiving member having a multi-layered light receiving layer with

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Nagahama, Japan

Tetsuya Takei