Seiko Epson Corporation

Seiko Instruments Co., Ltd.

Fuji Photo Film Company, Limited

Takashi Suzuki

Yoshinori Miyazawa

Masanao Matsuzawa

Atsushi Kobayashi

Satoshi Shinada

Seiji Mochizuki

Takao Kobayashi

Yasuhiko Kosugi

Nozomu Inoue

Kazuo Koshino

Hisashi Miyazawa

Nobumasa Abe

Yoshiro Koga

Hideki Okada

Takehiko Okamura

Takumi Sato

Kyu Takada

Yoshihiro Nakashima

Eiko Yanagida

Shoichi Hiraide

Kiyofumi Usui

Yujiro Nomura

Toru Fujita

Kazutoshi Fujisawa

Hisashi Koike

Eiji Kumai

Takeshi Sowa

Makoto Matsuzaki

Yukiharu Suda

Saburo Furukawa

Atushi Kobayashi

Yujirou Nomura

Hisako Katsuura

Yasuhiro Mita

Kiyoharu Mimose

At least one developing device applies toner onto a latent image formed on an image supporter to form a toner image thereon. A belt member is stretched and circulated by a plurality of roller members. The toner image, which is to be secondarily transferred onto a recording medium, is primarily transferred onto the belt member. A fixing device heats the recording medium to fix the secondary transferred toner image thereon. A casing accommodates the image supporter, the developing device, the roller members, the belt member and the fixing device, such that the developing device and the fixing device are partitioned by the belt member, and such that one of the roller members is located at a corner portion of the casing.

Image forming apparatus

An ink cartridge including: an ink chamber for retaining liquid ink; a foam chamber maintained in fluid communication with the ink chamber through a communication hole. An ink supply port for supplying ink from a porous body accommodated in the foam chamber to a recording head is provided. The portion of the foam body confronting the ink supply port is compressed by the ink supply port. The ratio between the amount of ink initially charged in the ink chamber and that of ink absorbed in the porous body is in the range from 1:1 to 1:3. When a cartridge uses more than one color of ink for printing in color, a plurality of foam and ink cartridges are used. The cartridge is filled under reduced pressure while the interior of the cartridge is further evacuated before filling with ink.

Ink cartridge for ink jet printer and method of charging ink into said cartridge

The present invention relates to a light deflective optical system without necessity of use of a plane mirror of which width is narrow, which can prevent variation in pitch of scan lines even with projecting or sinking of a deflective reflecting facet and can prevent a deflective light beam from twisting. The light deflective optical system has at least one deflective reflecting facet capable of being revolved or swiveled about the rotational axis and two stationary plane mirrors disposed to face the deflective reflecting facet wherein a light beam a incident on and thus reflected at the deflective reflecting facet is reflected successively at the stationary plane mirrors and this reflected light beam a is again incident on and reflected at the deflective reflecting facet Assuming as an incident plane as a face containing a light beam a to be first incident on the deflective reflecting facet and being parallel to the rotational axis the light beam a to be first incident on the deflective reflecting facet passes through a space between the stationary plane mirrors and the deflective light beam a after second reflection at the deflective reflecting facet passes through the space

Light deflective optical system

An ink tank cartridge for an ink-jet type recording apparatus is provided. The ink tank cartridge comprises a first chamber and a second chamber formed adjacent the first chamber. A porous member is housed in the second chamber. A partition wall separates the first chamber from second chamber, which communicate through a communication hole therethrough which extends along a portion of the width of the partition wall. An ink supply port extends through a wall of the first chamber and supplies ink to the exterior of the cartridge from the porous member. An air vent is spaced from the ink supply port provides ambient air to the second chamber. The pressure in the first chamber and the second chamber is at a value less than normal atmospheric pressure, and a pressure difference which retains the ink in the first chamber is also maintained between the first and second chambers by the surface tension of the porous member in the vicinity of the communicating hole. The first and second chambers, partition wall, communicating hole, air vent port and ink supply port are positioned and dimensioned so that a pressure difference between the chambers is not maintained as ink is transmitted through the ink supply port, and ink is supplied from the first chamber to the porous member in the second chamber as required until the pressure difference between the chambers is restored.

Ink supplied printer head and ink container

An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink dots thereon. The ink-supplied wire dot matrix printer head includes a wire guide member having a wire guide hole for guiding the tip end of the wire, and an ink tank containing an ink absorbing body therein and having an ink supply port in which a portion of the wire guide member is inserted. The wire guide member has a capillary ink path communicating with a side of the wire and supplied with ink from the ink absorbing body.

Ink supply tank for a printer

An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink dots thereon. The ink-supplied wire dot matrix printer head includes a wire guide member having a wire guide hole for guiding the tip end of the wire, and an Ink tank containing an ink absorbing body therein and having an ink supply port in which a portion of the wire guide member is inserted. The wire guide member has a capillary ink path communicating with a side of the wire and supplied with ink from the ink absorbing body.

Ink-supply tank for a printer

Ink-supply wire dot matrix printer head

The improved beam scanning apparatus has an optical element that is driven to rotate by means of a drive means so as to be capable of continuous angular displacement with respect to the beam from a light source. The optical element deflects the incident beam so that it is focused to form image on the image plane. It is provided with an entrance face, a reflecting face and an exit face which have their shape specified in such a way as to achieve effective correction of aberration, provide higher resolution, and reduce the size and cost of the apparatus.

Beam scanning apparatus, for providing tilt correction to a rotary

The present invention relates to a temperature control method for a fixing device of an image forming apparatus using an electrostatic photographing process, and it is an object of the present invention particularly to realize excellent temperature control performance without any addition of any complicated mechanism or device to a fixing device using a heater having a small heat capacity. The present invention is characterized by:

Temperature control method for fixing device and fixing device and image

A developing device including a supply member pressingly contacted with a toner carrier, wherein the supply member has a hardness which greater than that of the toner carrier. The supply member is rotated in the same direction as the toner carrier to conduct the peeling and supply of toner. A plate spring-like regulation member is pressed against the toner carrier to charge the toner to a predetermined polarity and thin the toner into one or two layers. The toner carrier is made of a foam material.

Developing device

Ink-supply tank for a dot matrix printer

Growing community of inventors

Shiojiri, Japan

Takashi Suzuki