Matsushita Electric Industrial Co., Ltd.

Ricoh Company, Ltd.

Other

Panasonic Corporation

Masaichiro Tatekawa

Hiroyuki Matsuo

Mamoru Soga

Koji Ikeda

Hidekazu Arase

Tetsuroh Nakamura

Takanori Nakano

Masahiko Hashimoto

Masakazu Tanahashi

Atsushi Sogami

Tsutomu Matsuda

Masayoshi Miura

Hideaki Horio

Kazuyuki Nakashima

Kazuo Nishimura

Koichi Baba

Shogo Matsubara

Yosuke Toyofuku

Keishi Taniguchi

Keisuke Fujimoto

Yoshitaka Kitaoka

Koji Matsuo

Takamichi Enomoto

Shigeru Kusakata

Akira Kumon

Katsutoshi Ogawa

Masashi Ito

Masashi Itoh

Masaharu Oyama

Yoshihito Urata

Toshiharu Sasaki

Kiyohide Amemiya

Masashi Tomita

Noboru Katakabe

Emiko Igaki

Hidetomo Nagahara

Kouji Ikeda

Toru Ishida

Masahiro Aizawa

Akira Fukano

Yoshiyuki Sugiyama

Shintaro Hara

Junichi Nawama

Hitoshi Hisada

Akira Ryoji

Takahiro Tsujimoto

Taichi Ito

Takatoshi Minoda

Takuya Kitahara

Hidenori Tomachi

An image reader for reading an image drawn on a paper or a sheet-like recording medium, an image processor provided with the image reader, such as a copying machine, a scanner and the like, and a fiber lens to be applied to those devices. The image processor has to be large in the whole size of device to read both sides of an original. Therefore, the image processor of the present invention comprises an image reader () on the upper side of transport path and an image reader () on the lower side of that respectively. In order to downsize the device, it is necessary to shorten the diameter of optical fiber () of the fiber lens () installed in the imager reader as light receiving means. In this case, the optical fiber () is provided with a light-absorbing layer() around of the optical fiber () in order to restrain the crosstalk and the flare phenomenon. The illuminance of light source means () installed in the image reader gets smaller as the device is downsized. In case where the illuminance is small, the image quality is deteriorated by the floating of the original. Accordingly, the image reader should be provided with the light source means so as to uniform the illuminance over a specific width of the main and sub scanning directions. Therefore, it is possible to avoid the deterioration of the image quality.

Image reader and image processor having a light source forming trapezoid-shaped illuminance distribution in sub-scanning direction

The invention provides a method for preparing an ink having constituents of a water-soluble dye having a water-soluble solubilizing group of at least one of a sulfonic group and a carboxyl group, water, a water-soluble substance that is condensation-polymerized in the absence of the water, a water-soluble medium and an additive including at least one of an organic acid salt and an inorganic acid salt. This method includes a first mixing step of mixing at least the dye and the water-soluble substance out of the constituents of the ink excluding the additive; a second mixing step of mixing a mixture obtained in the first mixing step and the additive; and a pH adjusting step, performed before the second mixing step, of preparing a solution including the mixture or a solution including the additive while adjusting the solution to a given pH range by using a pH adjuster.

Method for preparing ink, ink cartridge and ink-jet recording apparatus

An ink-jet recording ink contains at least a colorant, a moisturizer, water and a water-soluble substance capable of undergoing polycondensation along with vaporization of the water, in which the colorant is a chelate azo dye.

Ink-jet recording ink, image forming method, ink-jet recording apparatus and imaged article

A piezoelectric actuator is constructed by forming a common electrodeof Cr, a piezoelectric layerof Pb(Zr,Ti)O, a cover layerof BaTiO, and an individual electrodeof Pt in this order into a laminate. The thickness of the piezoelectric layerin the lamination direction (T) and the thickness of the cover layerin the lamination direction (T) satisfy the relationship of 0.08&#x2266;T/T&#x2266;1. The relative dielectric constant of the piezoelectric layer(&#x3b5;r) and the relative dielectric constant of the cover layer(&#x3b5;r) satisfy the relationship of &#x3b5;r/&#x3b5;r

Piezoelectric actuator and ink-jet head, and ink-jet recorder

An electronic paper file with an advantage like a book or a notebook can settle a conventional problem regarding the displaying that appears at a time of communicating by a portable information terminal. And the electronic paper file is provided with a receiving electronic paper displaying data sent from the other electronic paper and a sending electronic paper sending the display content to the other electronic paper.

Electronic paper file

In ink containing a colorant, a humectant, a penetrant, water, and a water-soluble substance that is condensation-polymerized in the absence of the water (e.g., hydrolyzable silane compound), the surface tension of the ink at 25&#xb0; C. before the water-soluble substance is condensation-polymerized is set to 20&#x2013;50 mN/m, or the ink further contains a fluoroalkyl monoalcohol whose boiling point is lower than 100&#xb0; C.

Inkjet recording ink, solvent for use in said ink and cartridge and recording device having said ink

A piezoelectric actuatorhas: a piezoelectric actuator partmade up of a common electrode, a piezoelectric element, and an individual electrode; an electrical interconnection joint partformed on the individual electrode; an electrical interconnectionformed on the electrical interconnection joint part; a head blockfixed to a nozzle platethrough the electrical interconnection; and a PI tapedisposed within the head block. A closed spaceis defined between the head blockand the nozzle plate. The closed spaceis divided by the PI tapeinto two sections. Of these two sections of the closed space, the one on the side of the head blockconstitutes a first closed space. A moisture absorbentis sealed within the first closed space. Relative humidity within the closed spaceof the ink jet headis not less than 0% nor more than 20%.

Piezoelectric actuator and method of manufacture therefor, and ink jet head and ink jet type recording device

A printer includes: a recording section for recording information on a recording medium; a medium carrying mechanism provided in an apparatus casing having an eject port that is opened in an upward direction or in a slanted upward direction; a medium accommodating section extending in a vertical or slanted vertical direction that defines a medium accommodating space that is continuous with the eject port; and an upward medium carrying mechanism that carries the recording medium upward by an amount according to the size of the recording medium stored in a size memory device, so that the re cording medium projects from the eject port by a predetermined constant length.

Recording apparatus with mechanism for ejecting recording medium

Ink for ink-jet recording contains an oil soluble dye, a humectant, a penetrant, water, and an amphiphilic star block polymer of which the outer portion is hydrophilic. The surface tension of the ink at 25&#xb0; C. is in the range of 20 to 50 mN/m.

Ink for ink-jet recording, and ink cartridge and recording apparatus including the same

The invention has an object to provide the electronic paper file, which an electronic paper can be attached to or detached from by providing a connecting terminal including the physical or electrical connecting function to both the electronic paper and the main unit. Since the display data is to be displayed on the nonvolatile display medium fitted to the display of the electronic paper, the electronic paper detached from the main unit can retain the display content. Since the connecting terminal fitted to the main unit is fixed to the rotatable rotatable axis, it is possible to retain the desired page with keeping double-pages spread.

Electronic paper, electronic paperfile and electronic pen

An ink composition containing a colorant, a humectant, water, and a water-soluble substance that begins to be condensation-polymerized as the water evaporates is ejected such that drops of the ink composition are adhered onto a print materialwhose surface is acidic, whereby an image is formed on the print material

Image formation method

A printer includes: a recording section for recording information on a recording medium; a medium carrying mechanism for carrying the recording medium on which information has been recorded by the recording section; a medium accommodating section extending in a vertical direction or in a slanted vertical direction for accommodating the recording medium carried by the medium carrying mechanism; and pusher means for pushing the recording medium carried by the medium carrying mechanism into the medium accommodating section.

Recording apparatus

In an ink for ink jet recording use including a water-soluble dye, a humectant, a penetrant, water and a hydrolyzable organic silicon compound, silicon atoms () are contained in the ink at a ratio of 3.3 or more with respect to one hydrophilic group () in the water-soluble dye molecules () so that at least the whole hydrophilic groups () in the water-soluble dye molecules () are surrounded by silicon atoms () as a result of a condensation and polymerization reaction of said organic silicon compound.

Inkjet recording ink, method for producing said ink, and ink cartridge and recording device having said ink

A first line headand a second line headare arranged in a scanning direction X. In each of the line headsand, actuator blocksare arranged at a constant interval in a head longitudinal direction Y so as to be spaced apart from one another. The actuator blockof the second line headis located between the actuator blocksandof the first line headwith respect to the head longitudinal direction Y. The actuator blockof the first line headand the actuator blockof the second line headpartially overlap with each other with respect to the head longitudinal direction Y.

Ink jet head, method for inspecting actuator, method for manufacturing ink jet head, and ink jet recording apparatus

An ink jet recording apparatus includes an ink jet head, a reference pulse generation circuit, and switch circuits. The reference pulse generation circuit is a circuit for generating, at a predetermined cycle, a first reference pulse Pbased on which a driving pulse is produced. A preliminary pulse Pis for vibrating an ink meniscus in the tip portion of a nozzle. A discharge pulse Pis for discharging an ink droplet through the nozzle. The switch circuits selectively input, to piezoelectric actuators, the preliminary pulse Pand the discharge pulse Pgenerated by the reference pulse generation circuit.

Ink jet recording apparatus

Growing community of inventors

Osaka, Japan

Masaichiro Tatekawa