Canon Kabushiki Kaisha

Kabushiki Kaisha Mochiro Kikaku

Kabushiki Kaisha Kyowa Seiko

Motoaki Sato

Takashi Watanabe

Akira Goto

Shigeo Toganoh

Tsuyoshi Santo

Kazuaki Masuda

Yuji Kondo

Keiichi Murai

Junichiro Iri

Manabu Sueoka

Kenichi Yamaguchi

Shigehira Iida

Makoto Inoue, Deceased

Hiroyuki Ishinaga

Seiichiro Karita

Masahiko Higuma

Teruo Arashima

Akihiro Yamanaka

Norio Ohkuma

Takahisa Kawamura

Akihiko Shimomura

Shozo Hattori

Megumi Saito

Makoto Watanabe

Satoshi Shimazu

Yusuke Hashimoto

Hiroshi Asakawa

Hitoshi Nagashima

Naruyuki Nojo

Naoya Tsukamoto

Muneyoshi Sunada

Satoko Kakumoto

Tsuneo Inoue, Heir

By Tsuneo Inoue, Heir

Tsuneo Inoue, Executor

A liquid discharge head includes i) a recording-element substrate configured to discharge a liquid, ii) a cuboid-like liquid tank configured to support the recording-element substrate and to store the liquid to be discharged from the recording-element substrate, and iii) an absorbent accommodated in a compressed state in the liquid tank and configured to absorb and hold the liquid. In the liquid discharge head, multiple projections are formed on a bottom of the liquid tank. In addition, as viewed in plan in a direction orthogonal to the bottom, the projections are disposed so as to surround or straddle an injection position at which the liquid is injected into the absorbent using an injection needle.

Liquid discharge head and method of manufacturing the liquid discharge head

A package or container contains a biodegradable resin and a microcapsule including therein a decomposition accelerator for the biodegradable resin. The microcapsule includes an outer shell containing a resin composition having photodegradability.

Package and container

A liquid ejection head includes an ejection-port formed member including liquid ejection ports, a substrate including liquid supply ports for supplying liquid to the ejection ports and a partition between the liquid supply ports, and a substrate supporting member. The liquid supply ports extend along the longitudinal direction of the substrate when viewed from a position facing the main surface of the substrate. The liquid supply ports are arrayed along the lateral direction of the substrate when viewed from the position facing the main surface. The partition includes a non-contact portion that is not in contact with the supporting member and a contact portion that is in contact with the supporting member. Of the liquid supply ports, adjacent liquid supply ports communicate with each other in the lateral direction through a gap between the non-contact portion and the supporting member, and liquid flows through the gap.

Liquid ejection head

A process for producing a liquid ejection head includes steps of providing an element substrate having an element for generating energy to be utilized for ejecting a liquid, a wiring substrate electrically connected to the element substrate through a lead wire, and a support member having a first support portion and a second support portion; applying a sealant to the second support portion; placing the element substrate on the first support portion and bringing the lead wire into contact with the sealant applied to the second support portion; and curing the sealant.

Process for producing liquid ejection head

The invention provides a recording medium for ink having an ink absorbing ability capable of absorbing ink of a large amount at a high speed, showing an excellent color forming ability and capable of suppressing an image deterioration by a dye displacement which tends to appear particularly in an image storage under a high humidity condition, and an image deterioration caused by light when a printed image is displayed, and showing an excellent stability with time of the printed image, and a method for producing such recording medium for ink. The invention also provides a recording medium for ink having at least one layer laminated on a substrate and including an ink receiving layer containing alumina hydrate as an outermost layer, in which a surface of the substrate at least on the side of the ink receiving layer is subjected to a cationizing treatment, further having an undercoat layer on the side of such cationizing treatment to obtain cations in a predetermined distribution, and having an outermost ink receiving layer laminated on said undercoat layer, and a producing method for such recording medium for ink.

Recording medium for ink and method for producing the same

The invention provides a recording medium providing an image storage property over a prolonged period and satisfactory recording properties at the same time, and a producing method for securely realizing such characteristics. In incorporating a colorant deterioration preventing agent in an ink-receiving layer, the colorant deterioration preventing agent is dissolved in a solvent and is applied on the ink-receiving layer thereby forming a high concentration region containing the colorant deterioration preventing agent at a high concentration and a low concentration region containing the colorant deterioration preventing agent at a low concentration, with the high concentration region positioned closer to the recording surface.

Ink recording medium and production method therefor

A recording medium for ink, capable of rapidly absorbing large amounts of ink, showing excellent color forming ability and capable of suppressing image deterioration caused by dye displacement that occurs when an image is stored in humid conditions and image deterioration caused by light when a printed image is displayed, and providing a printed image showing excellent long-term stability. The invention also provides a recording medium for ink having at least one layer provided on a substrate, and an ink receiving layer containing alumina hydrate as an outermost layer. A surface of the substrate at least on the side of the ink receiving layer is subjected to a cationizing treatment. An undercoat layer is provided on the same side as the cationizing treatment, to obtain cations in a predetermined distribution. The outermost ink receiving layer is provided on the undercoat layer.

A method of manufacturing a recording medium with an excellent productivity is provided. The method provides a recording medium having excellent ink absorbency and coloring property and includes an ink-receiving layer in which a binder is restricted and controlled. The present invention provides a method of manufacturing a recording medium including the steps of: performing a surface treatment on a substrate; and forming an ink-receiving layer using at least a pigment, polyvinyl alcohol, and a coating liquid that contains at least one selected from the group consisting of boric acid and borate. In this method, the surface-treatment step includes a first surface treatment and a second surface treatment. In the first surface treatment, a coating liquid that contains at least one selected from the group consisting of boric acid and borate is applied followed by being dried and solidified. In the second surface treatment, after the first surface treatment, a coating liquid that contains at least one selected from the group consisting of boric acid and borate is applied on the substrate. While the substrate is in a state of being wet by the coating liquid applied in the second surface treatment, the substrate is further coated with a coating liquid for forming the ink-receiving layer.

Recording medium having ink-receiving layer and method of manufacturing the same

An adhesive sheet-type sealing member is suitably used for protecting ink-ejecting nozzles or a communication hole of an ink-jet recording head during transportation or storage. The sealing member exhibits a yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min .+-.10% according to JIS-K-7113 and/or exhibits a folding load of not more than 0.10 g/cm for a specimen of 10 mm wide with a free length of 10 mm from the end of a specimen holder measured on the center of an electronic balance placed at a position 5 mm apart from the end of the specimen holder.

Sealing member for ink cartridge

An ink jet recording head wherein at least peripheral portions of discharge ports comprise a film which contains a polymer having a fluorine heterocyclic structure in the principal chain.

Manufacturing method for ink jet recording head and ink jet recording

An ink-jet recording head has ejection outlets formed by treating a face of a plate for the ejection outlets with a water-repellent and irradiating the plate with a laser beam from the backside of the plate. The head is provided with a sealing member for sealing the ejection outlets. The water-repellent has a hardness of higher than the pencil hardness 6B at room temperature. A decomposition product layer is formed on the layer of the water repellent at peripheral portions of the ejection outlets.

Ink-jet recording head

A method of manufacturing a recording head for use in an ink jet head involves providing a discharge port formation member having a surface in which orifices are to be formed, treating a discharge port face of the discharge port formation member with a water-repellent material, and forming orifices by applying radiation from a pulsed laser beam to the discharge port formation member which has been treated by the material having a water-repellent property, so that forming the orifices creates byproducts. The method also involves sticking at least once a tape having an adhesive layer against the discharge port face of the discharge port formation member against at least peripheral portions of the orifices having the byproducts created in the orifice forming step sticking thereto and deposited therein, and peeling the tape therefrom.

Method for manufacturing ink jet recording head having water-repellent

An ink jet head accomplishes high quality recording for a long term by an improved liquid repellency treatment. This liquid repellency treatment is applied to at least a peripheral portion of a discharge port on an ink discharge port forming surface of the ink jet head. A mixture of a fluorine-containing high polymer compound and a compound having fluorine substituted hydrocarbon group and a silazane group, alkoxysilane group or halogenized silane group is employed as a liquid repellent agent.

Ink jet head having an improved ink discharge surface and ink jet

Lamp cover

A method of manufacturing a recording head for use in an ink jet printer involves the steps of, after treating a surface of a discharge port formation member having plural discharge ports formed thereon, which formation member is formed with a material having a water-repellent property, forming the discharge ports by applying radiation from a pulsed laser beam, and then performing heat treatment for eliminating byproducts from the orifice forming sticking to and deposited in peripheries of the discharge ports, or if an orifice plate, byproducts sticking to peripheries of the discharge ports.

Growing community of inventors

Tokyo, Japan

Motoaki Sato