Riso Kagaku Corporation

E.i. Dupont De Nemours and Company

Other

Nippon Paper Industries Co., Ltd.

Wetmaster Co., Ltd.

Nihon Cambridge Filter Kabushiki Kaisha

Yasuo Yamamoto

Toshihiro Endo

Hideyuki Kinoshita

Akira Inaba

Nagon Takita

Makoto Hasegawa

Hiroki Yamamoto

William J Borland

Yoshifumi Watanabe

Carl Baasun Wang

Akiko Hayashi

Keiichiro Hayakawa

Manami Shimizu

Naofumi Ezaki

Tadayuki Wakatabi

Shunsuke Uozumi

Osamu Matsumoto

Toru Takemura

Takashi Kitagaki

Hiroyuki Ogawa

Akinobu Chatani

Hideaki Kuno

Teruaki Ohkawa

Mitsuru Ujiie

Kuninori Okamoto

Jerome D Smith

Tomohiro Matsuzawa

Mitsuko Kitanohara

Takayuki Oba

Jun Koishikawa

Noriko Kumazawa

Tsutomu Nio

Noboru Nishii

Ryosuke Kuwada

Isamu Yaguchi

Toru Nakai

Yuichi Ogawa

Nobuo Nakanishi

Ryuta Ono

Teruaki Ookawa

An oil-based inkjet ink is disclosed that contains colored resin particles, an ionic dispersant and a non-aqueous solvent, wherein the colored resin particles contain a colorant and a urethane-urea resin. A method for producing an oil-based inkjet ink is also disclosed.

Oil-based inkjet ink and method for producing oil-based inkjet ink

A non-aqueous ink-jet ink composition contains at least a pigment, a solvent, and a dispersing agent. The non-aqueous ink-jet ink composition further contains a chelating agent, which is soluble in the solvent. The chelating agent may be a crown ether and/or a cryptand, which acts as a neutral carrier. Alternatively, the chelating agent may be at least one chelating agent acting as an ionic carrier, which is selected from the group consisting of GEDTA, BAPTA, and DTPA. The non-aqueous ink-jet ink composition has good storage stability and good jetting-out performance through suppression of occurrence of sediments due to a change with the passage of time.

Non-aqueous ink-jet ink composition

In a stencil printer, a diaphragm pump is used as an ink supply pump.

Stencil printer

To provide a non-aqueous ink composition which is small in generation of strike through or smear marks and free from the problem of clogging of the nozzle. A non-aqueous ink composition includes solvent, dispersant and coloring material of pigment or dye. The solvent contains therein at least not smaller than 10% by weight non-polar organic solvent which is not higher than 260&#xb0; C. in 50% running point and at least not smaller than 20% by weight polar organic solvent which is not lower than 300&#xb0; C. in 50% running point.

Non-aqueous ink composition

An inkjet printer for printing a print paper () by ejecting a UV-curing type ink through an inkjet print head () incorporates an ultraviolet irradiation device (A) for irradiating the ultraviolet light to a target ink position following the ejection of the UV-curing type ink. The device (A) has an ultraviolet light generator () for generating the ultraviolet light and optical fibers () through which the ultraviolet light is guided to a position close to the inkjet print head (). The ultraviolet light is irradiated through tips of the optical fibers () in order to cure the UV-curing type ink.

Ink jet printer and method of hardening ink for the printer

An inkjet printer performing printing a print paper () by ejecting an UV-curing type ink to the print paper () through an inkjet print head () includes an ultraviolet irradiation device (A) having an ultraviolet light generation section () for generating ultraviolet light and optical fibers () through which the ultraviolet light generated by the section () is guided to a position close to the inkjet print head (). In the inkjet printer, ink ejection and ink curing are repeated in order to form a thick film, where the inkjet print head () performs the ink ejection for ejecting the UV-curing type ink to the print paper (), and the ultraviolet irradiation device (A) performs the ink curing for curing the ink printed on the print paper () immediately following the ink ejection.

Ink jet printer and its thick film printing method

The invention relates a source sheet for stencil printing comprising: a porous support material; a porous resin film formed on a surface of the porous support material; According to the source sheet and plate manufacturing method of the present invention, the plate for the stencil printing can be obtained which is superior in the pore block property and in which the thermal deformation of the source sheet during the plate manufacturing is suppressed.

Source sheet for stencil printing, plate manufacturing method, and stencil printing method

A microporous stencil sheet for use in stencil printing and methods for making stencil master using this microporous stencil sheet are disclosed herein. The microporous stencil sheet is for use in stencil printing using a low-viscosity ink with a viscosity ranging from 0.001 to 1 Pa&middot;s, comprises an inelastic resin film and has an air permeability ranging from 1 to 600 seconds and a thickness ranging from 1 to 100 &mgr;m. The methods for making stencil master using this microporous stencil sheet comprise the step of closing the micropores of the stencil sheet in a non-printing portion of a desired printed image.

Microporous stencil sheet printing system and method of printing

A printing sheet which prevents setoff while transferring a sufficient quantity of ink and maintains necessary dot uniformity can be obtained by ensuring characteristics that the centerline average roughness showing the larger value is 1.0-3.5 &mgr;m and the ratio of centerline average obtained by dividing the larger value by the smaller value is less than 1.15 where said values are chosen at the point where the difference between the centerline average roughness in a certain direction and the centerline average roughness at right angles to said direction is maximal. Further, the abovementioned quality is further improved by appropriately ensuring that the oil absorbability is more than 4 mg/cm and less than 7 mg/cm when the contact time between the oil component having a surface tension of 27-30 mN/m at 20&deg; C. and the printing sheet is 5 seconds and/or that the median pore diameter is 1.7-3.5 &mgr;m, in addition to the abovementioned characteristics.

Printing sheet

A micro porous plastic sheet is stencil plate made by a method for stencil plate making of a stencil sheet for stencil printing under the following conditions: heat is provided to form a negative image with TPH at &minus;30&lE;Tp&minus;Tm&lE;300&deg; C. (Tp is heating peak temperature and Tm is melting temperature (melting point) of the sheet) and in 10&lE;To&times;100/Ts&lE;80% (To is current-carrying time period and Ts is current-carrying cycle), micro pores are closed by the pressure for stencil plate making of 0.1&lE;P&lE;1.0 MPa, and the thermal shrinkage rate of the sheet measured by TMA is set to 1&lE;S &lE;20% (S is a thermal shrinking rate of the sheet at a temperature 30&deg; C. lower than the melting point TM).

Method for stencil plate making of stencil sheet for stencil printing

An ink supply roll is disposed inside a printing drum of a stencil printer and supplies ink to the inner peripheral surface of the printing drum. At least the surface layer of the ink supply roll is formed of a nonmetal material which is not larger than 100&deg; in contact angle and not larger than &plusmn;5% in swelling ratio to an ultraviolet-curing monomer.

Stencil printing system using UV-curable ink and having ink supply roll comprised of nonmetallic material

A stencil printing machine is provided with a paper feed section feeding a print sheet, which is allowed to have paper dusts thereon, in a paper feed path, and a print section to which the print sheet is transferred, and including a printing drum carrying thereon a stencil sheet having a perforated image area formed on the basis of image data and a rotary printing press member located in close proximity to an outer circumferential periphery of the printing drum to impart printing pressure thereto to allow the print sheet to be transferred in press contact between the printing drum and the rotary printing press member such that printing ink is transferred onto the print sheet to generate a desired image thereon through the perforated image area. There is further provided that a liquid applying mechanism applying liquid, which is permeable to the paper dusts, onto a print surface of the print sheet to allow the paper dusts to be permeated with the liquid at an upper stream position than a position where the printing drum and the rotary printing press member are in press contact with each other in the paper feed path. A liquid applying mechanism may firstly apply the liquid onto the stencil sheet from which the liquid is transferred to a print surface of the print sheet.

Stencil printing machine having moistener mechanism

An air flow rate measuring apparatus includes a casing having opposite open ends, a flow rectifier mounted within the casing at an upstream-side portion thereof with respect to a direction of flow of fluid to be measured, and at least one fluid pressure detector which is mounted within the casing, and is disposed downstream of the flow rectifier, the fluid pressure detector including at least one differential pressure detector member. The differential pressure detector member includes a pair of tubular members of an identical configuration, and each of the tubular members has a flattened shape having opposed narrow side walls and opposed wide side walls, and at least one pressure-measuring port is formed through one of the opposed narrow side walls. The differential pressure detector member further includes a pair of plug members mounted on and closing opposite open ends of each of the tubular members, respectively, one of the pair of plug members having a pressure outlet port. The at least one pressure-measuring port in one of the pair of tubular members is directed toward an upstream side with respect to a direction of flow of fluid to be measured, thereby forming a total pressure-measuring port, while the at least one pressure-measuring port in the other tubular member is directed toward a downstream side, thereby forming a static pressure-measuring port.

Fluid pressure detector and air flow rate measuring apparatus using same

A container for a fluid is formed of a soft, inner container for containing the fluid and a rigid, outer container, the inner container being disposed within the outer container, both containers having a discharge port common to each other. Approximately half from the discharge port side of the inner container bonded to the outer container.

Container for fluid

The invention relates to an improved method for making a plasma display apparatus comprising a plurality of stripe-shaped electrodes arranged in a matrix, a dot-shaped discharge area or pixel area at each solid intersection between the stripe-shaped electrodes and a fluorescent film formed on each of the discharge areas and adapted to emit light when the fluorescent film is excited by ultraviolet rays from the corresponding discharge area wherein the improvement is fabricating a ridge on one of the substrates utilizing a negative-working or positive-working diffusion patterning process.

Process for making plasma display apparatus with pixel ridges made of

Growing community of inventors

Ibaraki-ken, Japan

Yasuo Yamamoto