Canon Kabushiki Kaisha

Tadayoshi Inamoto

Hiromichi Noguchi

Hiroshi Sugitani

Megumi Munakata

Isao Imamura

Yoshie Nakata

Hiroyuki Saito

Mariko Suzuki

Akihiko Shimomura

Hiroshi Yoshino

Megumi Saito

Yoshiaki Kaburagi

Akira Kuribayashi

Ako Takemura

Masami Yokota

Masami Ikeda

Makiko Kimura

Hiroki Kihara

Seiichi Aoki

Kiyomitsu Kudo

Akio Saito

Shuji Koyama

Aya Yoshihira

Katsuyuki Yokoi

Masako Shimomura

Kazunari Ishizuka

Kiyomi Aono

Hideaki Mashio

Toshio Kashino

Yutaka Koizumi

Hirokazu Komuro

Keiichi Murakami

Toshio Suzuki

Takeshi Okazaki

Yohei Sato

Minoru Nozawa

Toshihiro Mori

Shinichi Tochihara

Yoshihiro Hamada

Yoshiaki Kurihara

Ryoichiro Kurobe

Haruo Uehara

Eiko Moriyama

Shoji Koike

Takahiro Mori

Hiroyuki Yamamoto

Kenji Shinjo

Akira Goto

Masashi Miyagawa

Isao Kimura

Masami Kasamoto

Junji Shimoda

Mitsutoshi Noguchi

Tokuya Ohta

Kenji Yabe

Shin Ishimatsu

Haruhiko Terai

Satoshi Shimazu

Akira Tsujimoto

Yoshiyuki Toge

Nobuyuki Hosoi

Kouji Harada

Akane Hisanaga

Koji Tomita

Kazuto Takashima

Ikumi Sakata

Akihiko Shimimura

Tooru Suzuki

A sealant contains a dicyclopentadiene type epoxy resin represented by formula 1 below, a hydrogenated bisphenol A epoxy resin, and a photo-induced cationic polymerization initiator, in which the content of the dicyclopentadiene type epoxy resin is 15 to 40 parts by mass relative to 100 parts by mass of the total mass of epoxy resins contained in the sealant. where n represents an integer of 0 to 2.

Sealant, inkjet recording head using sealant, and method for manufacturing the same

A liquid ejection head includes: a chip including a substrate having an energy generating element, an ejection orifice member, and an electrode terminal; an electric wiring board; a support member for supporting the wiring board, the support member having an opening surrounding the chip; a chip periphery sealing member which fills a gap between the chip and the opening; and an electrically connecting portion sealing member disposed in contact with the chip periphery sealing member and which covers an electrically connecting portion between the chip and the electric wiring board. The electrically connecting portion sealing member is a cured product of a material containing filler. The chip periphery sealing member is a cured product of a material containing at least one of specific siloxanes. The chip periphery sealing member and the electrically connecting portion sealing member has a difference in coefficient of linear expansion of 50 ppm/&#xb0; C. or more.

Liquid ejection head and method of manufacturing the same

A sealing tape for an ink jet recording head, detachably adhered to the surface of a chip which is provided on an ink jet recording head and on which a discharge port for discharging ink is formed, includes: a base layer; and an adhesive layer on the base layer, the adhesive layer consisting of: (1) 70 to 100 wt % of (A)-(B)-(A) block copolymers which have no unsaturated carbon bond and consist of (a) vinyl aromatic compound units and (b) olefinic hydrocarbon units where (A) is a polymer block consisting of the (a) units and (B) is a polymer block consisting of the (b) units; and (2) 0 to 30 wt % of polyolefin, wherein the content of the (a) vinyl aromatic compound units in the (1) (A)-(B)-(A) block copolymers is 10 to 30 wt %.

Sealing tape for ink jet recording head and ink jet recording head using the same

A liquid ejection head includes a chip having a liquid ejection pressure generating element and an electrode terminal for electrically connecting the liquid ejection pressure generating element to an external source, an electrical wiring board having a lead wiring to be electrically connected to the electrode terminal, and a lead sealing material for covering an electrical connection portion between the electrode terminal and the lead wiring. The lead sealing material contains an epoxy resin which has an average number of functional groups per molecule of more than two and is solid at 25&#xb0; C., an acid anhydride curing agent having a polybutadiene backbone, a curing accelerator, and an inorganic filler.

Liquid ejection head and method of producing the same

A liquid discharge head includes a substrate having, on one side thereof, energy generating elements for generating energy used for discharging liquid, and a sealing member arranged in contact with at least a part of one or more end faces of the substrate, the sealing member being a cured product of a composition having an epoxy resin having a butadiene skeleton and an epoxy resin curing agent having a butadiene skeleton.

Liquid discharge head and method for manufacturing the same

An ink jet recording head comprising a discharge port for discharging an ink; and a sealing tape for sealing the discharge port; wherein the sealing tape includes a pressure-sensitive adhesive layer constituted of an acrylic crosslinked polymer formed by crosslinking an alkyl(meth)acrylate ester copolymer with a metal chelate compound, and is peelably adhered, through the pressure-sensitive adhesive layer, to a part where the discharge port is formed.

Ink jet recording head and ink jet recording head cartridge

An ink jet recording head has an array of ink ejection outlets in an ejection outlet forming surface, to which a protection tape is adhered during transportation. The ejection outlet forming surface has an outside area which is outside of each of opposite ends of the array with respect to a direction of the array, and the outside area has a peel resistance, provided by surface modification, which resistance is higher than in another portion of the ejection outlet forming surface.

Ink jet recording head, ink jet cartridge, and method for manufacturing ink jet recording head

An ink jet head has a head substrate including discharge elements for discharging ink, with an electric wiring board being electrically connected to the head substrate, in which the periphery of the head substrate is sealed with a first sealant, and an electric splice between the head substrate and the electric wiring board is sealed with a second sealant. The first and second sealants contain the same base resin and curing agent, and the second sealant shows higher hardness than the first sealant after curing. This ink jet head is free from problems such as cavities and fissures at the boundary of the two sealants caused by a difference in linear expansion coefficients.

Method of manufacturing ink jet head and apparatus using sealants

A liquid discharge head includes a discharge element substrate including an energy generating element that generates energy for discharging liquid, a discharge port provided so as to correspond to the energy generating element, and a supply path for supplying the liquid to the discharge port. The discharge element substrate has an open face to which the discharge port is open, a back face of the open face, and side faces formed between the open face and the back face, and at least a part of the side faces is sealed by a sealing agent, which contains a filler made of fluororesin.

Liquid discharge head

A method for producing an ink-jet recording head having a discharge port configured to discharge ink, a passage-forming member configured to form an ink passage communicating with the discharge port, and a substrate provided with an energy-generating element configured to generate energy utilized for discharging ink includes the steps of forming a pattern for the passage on the substrate, the pattern being composed of a positive photosensitive resin that is insensitive to light having a wavelength of 300 nm to 470 nm, forming a coating resin layer to be the passage-forming member on the substrate having the pattern, exposing the coating resin layer to only light having a wavelength of 300 nm or more to form the discharge port, and removing the pattern to form the passage.

Ink-jet recording head and method for producing same

An ink media pack integrally formed with an ink receptacle portion receiving ink and a printing medium receptacle portion receiving a printing medium to be used in an ink-jet printing system is disclosed. In the pack, an optimal combination of ink and a printing medium to obtain a high quality image is housed. In an embodiment the printing medium is cloth and the ink contains dye which can dye the cloth. In another embodiment, the ink has a coloring agent content in a range of 2.0 Wt % to 15.0 Wt % and the printing medium has a bleeding ratio in a range of 2.0 times to 4.0 times.

Inks-and-printing-media-integrated pack, ink-jet printing apparatus and method

The present invention provides a liquid discharge recording head comprising a substrate on which an energy generating element for generating liquid discharging energy is provided, and an orifice plate which is laminated with the substrate and in which a discharge port corresponding to the energy generating element is provided, and wherein a liquid droplet is discharged in a direction substantially perpendicular to surfaces of the substrate and the orifice plate, and further wherein a flow path is formed between the substrate and the orifice plate, a groove encircling the flow path is formed in the orifice plate, and edge portions of the orifice plate contacted with the groove are formed as saw-shaped portions having a number of minute indentations.

Liquid discharge recording head and method for manufacturing the same

A pack integrally housing inks and printing media has an ink housing section arranged so as to overlap part of a printing media housing section . The ink housing section is configured to rotationally move around a rotational moving shaft so as to be opened and closed relative to the printing media housing section . On the other hand, the printing media housing section has an opening formed in a lower part thereof and in which part of housed printing media appears, thereby enabling the pack to come into contact with a sheet feeding roller of the printer when the pack is installed in a printer. Additionally, while not installed in the printer, the pack is covered with the opening and closing ink housing section , thereby enabling the printing media to be protected from dusts or the like.

Inks-and-printing-media-integral-type pack, printing liquid and sheets container, sheet supplying device, and printing apparatus comprising the same

Provided is a recording medium provided with an ink-receiving layer on at least one surface of a substrate, wherein said ink-receiving layer is composed of a porous layer comprising pigment particles and mutually fused thermoplastic resin particles.

Recording medium, image forming process using the same, and process for the preparation of the same

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Hachioji, Japan

Tadayoshi Inamoto