Canon Kabushiki Kaisha

Koichi Osumi

Shinya Mishina

Hisashi Teraoka

Sadayuki Sugama

Mikio Sanada

Yoshihisa Takizawa

Yoshifumi Hattori

Yoichi Takada

Shinichi Hakamada

Hiroshi Tomioka

Yasuhiro Nito

Katsuhiko Suzuki

Shinichi Tochihara

Junichi Sakai

Minako Kawabe

Hideki Yamakami

Tomonari Watanabe

Hiroyuki Takuhara

Itaru Tsuji

Yuko Yakushigawa

Masao Kato

Shinichi Sato

Nobuyuki Matsumoto

Daisaku Ide

Takumi Kaneko

Ryuji Katsuragi

Yuko Takada

To provide a waste ink absorbing tank, capable, even in the case of utilizing an ink of a high coagulating property, of causing a waste ink absorbent member to efficiently absorb such ink. A waste ink absorbent member has a hole portion corresponding to an introducing position of the waste ink, and the hole portion is opened on a lateral face of the absorbent member. The waste ink, introduced into the hole portion moves in one direction toward the waste ink absorbent member and absorbed therein.

Waste ink absorbent member, and waste ink container and ink jet recording apparatus equipped with waste ink absorbent member

An ink jet ink includes at least a coloring material. The coloring material is composed of at least one selected from the group consisting of C.I. Direct Yellow 86, C.I. Acid Yellow 23, C.I. Direct Yellow 173, C.I. Direct Yellow 132 and C.I. Direct Yellow 59, and a compound represented by the following the general formula (I) or a salt thereof. 

Ink jet ink, method for producing ink jet ink, ink jet recording method and ink cartridge

An ink jet ink includes at least a coloring material. The coloring material is composed of at least one selected from the group consisting of C.I. Acid Blue 9 and a compound having a copper phthalocyanine structure, and a compound represented by the following general formula (I) or a salt thereof 

An ink jet recording ink comprising at least a copper phthalocyanine dye represented by the following general formula (1) and a compound represented by the following general formula (2): 

Ink jet recording ink, ink jet recording method, ink cartridge, and ink jet recording apparatus

An ink comprising yellow colorants and a colorant having a phthalocyanine skeleton, in which the yellow colorants are at least a colorant represented by the following general formula I and C.I. Direct Yellow 132 

Ink, ink jet recording method, ink cartridge, and ink jet recording apparatus

An ink jet ink includes at least a coloring material. The coloring material is composed of at least one selected from the group consisting of C.I. Direct Violet 107, C.I. Acid Red 14, C.I. Acid Red 52, C.I. Acid Red 87 and C.I. Reactive Red 180, and a compound represented by the following general formula or a salt thereof 

An ink jet ink includes at least a coloring material. The coloring material is at least one of C.I. Food Black 2 and C.I. Direct Black 195, and a compound represented by the following general formula (I) or a salt thereof 

An ink contains a coloring material and an aqueous medium. The coloring material is composed of a self-dispersion-type carbon black. At least one hydrophilic group is bonded to the surface of the carbon black directly or through another atomic group. A K value of the ink determined by a Bristow's test method is less than 1.5, and the total amount of monovalent cations in the ink is in a range of 0.05 to 1 mole/liter. This ink exhibits superior ink-jet recording characteristics.

Ink, method for improving intermittent dischargeability of ink-jet recording apparatus, method for recording image, recording unit, ink cartridge, ink set, and image recording apparatus

An ink comprises a coloring material and an aqueous medium wherein the coloring material contains a self-dispersing type carbon black, in which self-dispersing carbon black a hydrophilic group combines with the surface of a carbon black directly or through another atomic group, and which ink contains potassium ion in an amount of 0.6% or more of the weight of the carbon black.

Ink, image recording process, ink cartridge, recording unit, ink set, crust-preventing method and image forming apparatus

A method of recording a multi-color image containing a plurality of image regions formed by applying an black ink and a color ink to overlap each other in different orders, where the black ink contains a salt, an aqueous medium and a pigment dispersed in the aqueous medium by the action of an ionic group, and the color ink contains a dye. Otherwise, the black ink contains a salt, an aqueous medium and a pigment dispersed in the aqueous medium by the action of an ionic group, and the color ink is reactive with the black ink. This method enables to obtain high quality images free from density unevenness or excellent in uniform feeling.

IMAGE RECORDING METHOD, METHOD FOR IMPROVING QUALITY OF MULTICOLOR IMAGE, IMAGE RECORDING APPARATUS, INK SET, RECORDING UNIT, IMAGE FORMING METHOD, METHOD FOR IMPROVING IMAGE QUALITY, AND METHOD FOR FORMING MONOTONE IMAGE

Ink, aqueous ink for ink-jet recording, ink set, ink cartridge, recording unit, image-recording apparatus, color-image-recording apparatus, ink-jet recording process and bleeding reducing method

An ink is provided which suppresses the influence of the kinds of recording media on the image quality, is excellent in image quality, effectively inhibits the occurrence of bleed upon the formation of color images, is excellent in long-term shelf stability and stably forms high quality images. The ink contains at least one salt selected from the group consisting of (M ) SO , CH COO(M ), Ph-COO(M ), (M )NO , (M )Cl, (M )Br, (M )I, (M ) SO and (M ) CO , wherein M represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (&mgr;mol/m ) on its surface.

Ink, ink set, ink cartridge, recording unit, color-image recording apparatus, image recording process, color-image forming process, and method for improving density of ink-jet recorded image

An ink is provided which is capable of giving higher density of the printed image and has improved color developability with the light fastness and image stability maintained, and suppressing occurrence of bleeding in color image formation. The ink contains a capsuled coloring material constituted of a water-insoluble coloring material and an organic polymer covering the coloring material, the capsuled coloring material containing the organic polymer at a content ranging from 1% by weight to 20% by weight.

Ink, ink set, ink cartridge, printing unit, image printing apparatus, ink-jet printing method, and coloring material

An ink set capable of reducing the influence of recording media on image quality and stably forming high-quality images is provided. The ink set includes a liquid composition containing at least one salt selected from the group consisting of (M1) SO , CH COO(M1), Ph&mdash;COO(M1), (M1)NO , (M1)Cl, (M1)Br, (M1)I, (M1) SO and (M1) CO , wherein M1 denotes an alkali metal, ammonium or organic ammonium, and Ph denotes a phenyl group, and at least one ink selected from the group consisting of yellow, magenta, cyan, black, red, blue and green inks.

LIQUID COMPOSITION, INK SET, RECORDING PROCESS, INK CARTRIDGE, RECORDING UNIT, PROCESS FOR FORMING MULTI-COLOR IMAGE, INK-JET APPARATUS, PROCESS FOR FACILITATING FIXING OF INK TO RECORDING MEDIUM, AND PROCESS FOR IMPROVING QUALITY OF MULTI-COLOR IMAGE

Growing community of inventors

Kawasaki, Japan

Koichi Osumi