Canon Kabushiki Kaisha

Hiromichi Noguchi

Tadayoshi Inamoto

Akihiko Shimomura

Megumi Munakata

Masako Shimomura

Isao Imamura

Yuko Suga

Akio Kashiwazaki

Yoshie Nakata

Yutaka Kurabayashi

Megumi Saito

Makiko Kimura

Tamaki Sato

Masami Ikeda

Masato Katayama

Tsuyoshi Kanke

Kiyomi Aono

Aya Takaide

Yuko Nishioka

Yasufumi Sato

Shoji Koike

Osamu Sato

Takahiro Mori

Masahiro Haruta

Hiroshi Sugitani

Kazuaki Masuda

Katsuhiro Shirota

Mariko Suzuki

Koromo Shirota

Tomoya Yamamoto

Shinichi Tochihara

Hiromitsu Kishi

Akira Nagashima

Yutaka Koizumi

Hirokazu Komuro

Aya Yoshihira

Shinichi Hakamada

Hiroshi Tomioka

Isao Kimura

Hiroyuki Maeda

Haruo Uehara

Eiko Moriyama

Hiroyuki Ishinaga

Tsutomu Abe

Masanori Takenouchi

Shinichi Sato

Kiyomitsu Kudo

Masahiko Higuma

Kenji Shinjo

Masashi Miyagawa

Mamoru Sakaki

Keisuke Matsuo

Hidemi Kubota

Ken Ikegame

Nobuhito Yamaguchi

Hirofumi Ichinose

Isao Ebisawa

Tokuya Ohta

Toshihiko Bekki

Takumi Kaneko

Naohito Asai

Yuko Sato

Eiichi Suzuki

Minako Kawabe

Kenichi Moriya

Hiroyuki Takuhara

Mifune Hirose

Shin-ichi Tochihara

An aspect of the present invention is a process for producing a liquid ejection head including an ejection orifice member provided with ejection orifices for ejecting liquid. The process includes supplying to a surface of a base material for forming the ejection orifice member a mixture of a first composite for imparting a hydrophobic characteristic to the surface and a second composite being able to exhibit a hydrophilic characteristic by being irradiated with light; imparting a hydrophobic characteristic to the entire or a part of the surface by utilizing the first composite; and then irradiating the second composite with light in a partial region of the surface for imparting a hydrophilic characteristic to the region irradiated with the light.

Liquid ejection head and process for producing the same

To provide an active energy ray curable aqueous ink composition exhibiting excellent curing performance by including a water-soluble polymerizable substance with high reactivity and a water-soluble polymerization initiator having high initiation efficiency; and an inkjet recording method, ink cartridge, recording unit, and inkjet recording apparatus all using the active energy ray curable aqueous ink composition. The active energy ray curable aqueous ink composition includes at least water; a polymerizable substance which undergoes radical polymerization by active energy rays; and a polymerization initiator which generates radicals by active energy rays, in which the polymerizable substance is a water-soluble compound having 2 to 6 (meth)acrylic groups; and the polymerization initiator is a water-soluble acylphosphine oxide compound.

Active energy ray curable aqueous ink composition, and inkjet recording method, ink cartridge, recording unit, and inkjet recording apparatus using the same

An embodiment of the invention relates to a novel epoxy resin composition. The epoxy resin composition comprises (i) a first epoxy resin having in the molecule thereof at least one water-repellency-imparting group and two or more cyclic aliphatic epoxy groups, and having a number average molecular weight ranging from 8,000 to 22,000 and a polydispersity ranging from 3.5 to 5.0, (ii) a second epoxy resin having in the molecule thereof at least one water-repellency-imparting group and two or more cyclic aliphatic epoxy groups, having a number average molecular weight ranging from 2,500 to 8,000 and a polydispersity ranging from 1.5 to 3.0, and (iii) a cationic polymerization catalyst.

Epoxy resin composition

An epoxy resin composition can be used for forming a film having excellent water-repellency on a substrate surface. The epoxy resin composition contains (a) an epoxy resin having at least two alicyclic epoxy groups, at least one perfluoroalkyl group having 6 to 12 carbon atoms, and at least one alkylsiloxane group and (b) a cationic polymerization catalyst. The alicyclic epoxy groups and the perfluoroalkyl group are present in branched chains of the epoxy resin, and the alkylsiloxane group is present in the main chain of the epoxy resin.

Composition of perfluoroalkyl group-containing alkylsiloxy cycloaliphatic epoxy resin

An active energy ray curable ink which is quickly polymerized by an active energy ray, high in crosslinking degree of a cured material formed, excellent in adhesive property, low in viscosity, excellent in long-term storability and also excellent in ejection stability, and an ink-jet recording process, an ink cartridge, a recording unit and an ink-jet recording apparatus using such an ink are provided. In the active energy ray curable aqueous ink comprising at least water and a polymerizable material which is radically polymerized by an active energy ray, the polymerizable material is a water-soluble polymerizable material represented by the following general formula (I). An ink-jet recording process, an ink cartridge, a recording unit and an ink-jet recording apparatus using such an ink 

Active energy ray curable aqueous ink, and ink-jet recording process, ink cartridge, recording unit and ink-jet recording apparatus using the same

Disclosed herein is an image-forming method, including performing image formation on the basis of pixel data by using at least a yellow recording agent, a magenta recording agent, and a third recording agent. A color represented on a recording medium by the third recording agent on a color space of CIE-L*a*b* has lightness higher than lightness of a color reproduction region represented on the recording medium by a combination of the yellow recording agent and the magenta recording agent, and has a hue angle in the color reproduction region. A difference in hue angle on the color space between a color represented by the yellow recording agent and a color represented by the magenta recording agent is in a range of 60 to 113&#xb0;.

Image-forming method, image-forming apparatus, ink set, and ink

Epoxy resin composition, surface treatment method, liquid ejection recording head, and liquid ejection recording apparatus

Epoxy resin composition, surface treatment method, liquid-jet recording head and liquid-jet recording apparatus

The present invention provides an anti-curl agent containing an amide compound of specific structure and molecular weight, an ink jet ink containing the amide compound, a method for ink jet recording to form images by ejecting the ink, and a method for reducing curl of recording media using the ink. The anti-curl agent of the present invention can reduce shape changes of a printed paper with a lapse of time, i.e., the curl phenomenon, tending to occur in particular with a plain paper printed over the entire surface, without deteriorating image quality.

Anticurling agent, ink jet ink, method for ink jet recording and method for reducing curling

An adsorbent for ink jet use arranged in a position to be in contact with ink, having the higher capability of adsorption with respect to hydrophobic substance contained in ink than colorant therein. Then, an ink retaining container comprises an ink retaining portion for retaining ink to be supplied to an ink jet head, an ink supply opening which becomes the ink supply portion from the ink retaining portion to the head, an atmospheric communication opening for communicating the ink retaining portion with the air outside. This ink retaining container is provided with the above-mentioned adsorption member arranged in a position to be in contact with ink in it. With the adsorbent and the ink retaining container thus arranged, it is made possible to perform ink jet recording with excellent print characteristics by effectively removing the hydrophobic substance eluted form the ink absorbent in the ink retaining container.

Adsorbent for ink jet use, an ink retaining container, an adsorption member using such an adsorbent, an ink supply system having such adsorption member, and an ink jet recording apparatus

An epoxy resin composition suitable for forming a film of excellent water repellency which comprises an epoxy resin having one or more water repellent groups and two or more cyclic aliphatic epoxy groups per molecule, a triazine-base catalyst for cationic polymerization and a non-polar solvent.

Epoxy resin composition, surface treating method, ink-jet recording head, and ink-jet recording apparatus

The invention relates to a process for producing a high-quality ink-jet recorded image. The process comprises the steps of (i) applying a first ink containing at least one colorant to an opaque printing medium by an ink-jet method to form a visible image; and (ii) applying a second ink, which does not change or substantially not change the hue of the printing medium, to a portion of the printing medium that is complementary to the visible image, thereby alleviating a difference in gloss between the visible image and the portion complementary to the visible image.

Ink-jet recording process, ink-jet recorded image and method of alleviating difference in gloss in the ink-jet recorded image

The present invention relates to an epoxy resin composition. The epoxy resin composition contains an epoxy resin and a cationic polymerization catalyst. The epoxy resin has at least two alicyclic epoxy groups, at least one perfluoroalkyl group having 6 to 12 carbon atoms, at least one alkylsiloxane group, and at least one cyclic group.

An useful aqueous photocurable resin composition is provided. The aqueous photocurable resin composition of the present invention comprises at least water, a polymerizable material polymerizable with radical initiation and a water-soluble photopolymerization initiator which generates a radical with light, wherein the polymerizable material has at least two polymerizable functional groups and one anionic functional group.

Photocurable aqueous resin composition, ink, recording unit, ink cartridge, ink-jet recording apparatus and photopolymerization initiator

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Tokyo, Japan

Hiromichi Noguchi