Brother Kogyo Kabushiki-Kaisha

Junichiro Sugimoto

Noriaki Satoh

Masaya Fujioka

Ryuji Kato

Shunichi Higashiyama

Narumi Koga

Kazuma Goto

Ayako Ohishi

Satoshi Okuda

Tatsunosuke Hoshi

Akihiko Taniguchi

Mitsunori Maeda

Masashi Tsuda

Narumi Kawai

Kenjiro Imai

Atsushi Nakamura

Eiji Kawamura

Hideo Ohira

Michiko Aoyama

Tomoyo Hamajima

Masahiro Nishizaki

Mayuko Okada

Masaya Fuijoka

A liquid discharge recording apparatus includes: a liquid containing first glycol ether; a liquid discharge head which discharges the liquid; an absorber which absorbs the liquid discharged from the liquid discharge head; and second glycol ether which is contained in the absorber and of which vapor pressure is lower than that of the first glycol ether.

Liquid discharge recording apparatus and method for recovering liquid

A liquid discharge recording apparatus includes: a liquid; a liquid discharge head configured to discharge the liquid; an absorber configured to absorb the liquid discharged from the liquid discharge head; and unsaturated fatty acid of which specific gravity is smaller than that of the liquid and which is contained in the absorber.

A liquid discharge recording apparatus includes: a first liquid containing a diol represented by the following formula (1):HOCHOH&#x2003;&#x2003;(1)wherein in the formula (1), 'n' represents an arbitrary integer; a liquid discharge head which discharges the first liquid; a second liquid containing a non-volatile humectant and a non-volatile 1,2-alkylenediol; and an absorber which contains the second liquid and which absorbs the first liquid exited from the liquid discharge head, wherein not less than 20% by weight to not more than 50% by weight of the non-volatile humectant is contained in the second liquid; not less than 2% by weight to not more than 10% by weight of the non-volatile 1,2-alkylenediol is contained in the second liquid; and a ratio of a blending amount (% by weight) of the non-volatile 1,2-alkylenediol in the second liquid to a blending amount (% by weight) of the diol represented by the formula (1) in the first liquid is not less than &#xbc;.

A liquid discharge recording apparatus includes: a first liquid containing trimethylolpropane; a liquid discharge head configured to discharge the first liquid; a second liquid containing a solvent of which freezing point is less than 20 degrees Celsius and of which specific gravity is not more than 1.12; and an absorber which is configured to contain the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head, wherein a blending amount (% by weight) of the solvent in the second liquid is not less than a blending amount (% by weight) of the trimethylolpropane in the first liquid.

A liquid discharge recording apparatus includes: a first liquid containing 2-pyrrolidone; a liquid discharge head configured to discharge the first liquid; a second liquid containing a solvent of which freezing point is less than 20 degrees Celsius and of which specific gravity is less than 1.12 g/cm; and an absorber which contains the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head.

There is provided a water-based ink for ink-jet recording including a self-dispersible carbon black modified by carboxylic acid group, a water, and a water-soluble organic solvent, wherein a weight concentration of phosphate ion in the water-based ink is not more than 35 ppm. The water-based ink for ink-jet recording has excellent water resistance and is capable of lowering or preventing corrosion of a metal member, in an ink-jet recording apparatus, contacting with the water-based ink for ink-jet recording.

Water-based ink for ink-jet recording, ink cartridge, ink-jet recording apparatus, ink-jet recording method, method for producing water-based ink for ink-jet recording, and method for preventing corrosion of metal member of ink-jet recording apparatus

An ink-jet recording apparatus performing recording on a recording medium includes: a water-based yellow ink containing a yellow dye, a water-based magenta ink containing a magenta dye and a water-based cyan ink containing a cyan dye of which hue angles &#x2220;H&#xb0; defined in a CIELAB color space are within the predetermined ranges; an ink-jet head configured to discharge the water-based yellow, magenta and cyan inks; and a controller configured to control the ink-jet head so as to satisfy the following conditions (A) and (B) to thereby form a composite black on the recording medium: (A) 0.66&#x2266;C/(Y+M) and (B) 530&#x2266;Y+M+C&#x2266;600, wherein in the conditions (A) and (B): Y, M and C are drop amounts (ng) of the yellow dye, the magenta dye and the cyan dye dropped in a 25.4 mm&#xd7;25.4 mm area of the recording medium, respectively.

Ink-jet recording apparatus, ink-jet recording method, recorded matter and composite black

A liquid discharge recording apparatus includes a first liquid containing first 1,2-alkanediol; a liquid discharge head configured to discharge the first liquid; a second liquid containing second 1,2-alkanediol of which vapor pressure is lower than that of the first 1,2-alkanediol; and an absorber which contains the second liquid and which is configured to absorb the first liquid exited from the liquid discharge head.

Disclosed is a treatment solution for ink jet recording, including: an aggregating agent; water; and tetraethylene glycol monobutyl ether and pentaethylene glycol monobutyl ether, wherein: tetraethylene glycol monobutyl ether and pentaethylene glycol monobutyl ether are contained by 1 % by weight to 10 % by weight in total in the treatment solution; and a weight ratio (X:Y) of tetraethylene glycol monobutyl ether (X) to pentaethylene glycol monobutyl ether (Y) is 50:50 to 90:10.

Treatment solution for ink-jet recording, water-based ink set for ink-jet recording, ink-jet recording method, and ink-jet recording apparatus

Disclosed is a water-based ink for ink jet recording, including: a colorant; water; and tetraethylene glycol monobutyl ether and pentaethylene glycol monobutyl ether, wherein: tetraethylene glycol monobutyl ether and pentaethylene glycol monobutyl ether are contained by 1% by weight to 10% by weight in total in the water-based ink for ink jet recording; and a weight ratio (X:Y) of tetraethylene glycol monobutyl ether (X) to pentaethylene glycol monobutyl ether (Y) is 50:50 to 90:10.

Water-based ink for ink-jet recording, ink cartridge, water-based ink set for ink-jet recording, ink-jet recording method, and ink-jet recording apparatus

There is provided a water-based ink for ink-jet recording including: a self-dispersible carbon black modified by carboxylic acid group; water; and a water-soluble organic solvent, wherein oxalate ion is contained in the water-based ink in a amount of not more than 45 ppm by weight.

Water-based ink for ink-jet recording, ink cartridge, ink-jet recording method, method for preventing corrosion of metal member, method for producing water-based ink for ink-jet recording, and ink-jet recording apparatus

A water-based ink for ink-jet recording includes a self-dispersible pigment modified by phosphate group; water; a water-soluble organic solvent; at least one of a cationic polymer and basic amino acid; and at least one selected from the group consisting of boric acids, a chelate agent, a reducing sugar and a sugar alcohol.

Water-based ink for ink-jet recording and cartridge

A water-based ink for ink jet recording includes a self-dispersible pigment modified by phosphate group; water; a water-soluble organic solvent; a cationic surfactant which is contained at 0.001% by weight to 0.05% by weight in the water-based ink for ink jet recording; and at least one selected from the group consisting of boric acids, a chelate agent, a reducing sugar and a sugar alcohol.

Water-based ink for ink-jet recording and ink cartridge

A treatment solution used for ink-jet recording, includes a quaternary alkylammonium salt represented by general formula (1) and water: 

There is provided a treatment solution used for ink-jet recording, including: quaternary alkylammonium hydroxide represented by general formula (1); an acid including at least one of dicarboxylic acid and tricarboxylic acid; and water; wherein the quaternary alkylammonium hydroxide is neutralized, to be a quaternary alkylammonium salt, by the at least one of the dicarboxylic acid and the tricarboxylic acid to have a degree of neutralization which is not less than 50% and not more than 110%; wherein each of R, R, Rand Ris an alkyl group having 1 to 4 carbon atoms; the alkyl group is a substituted alkyl group or an unsubstituted alkyl group, and is a straight chain alkyl group or a branched chain alkyl group; and the Rto Rare same with or different from one another.

Growing community of inventors

Nagoya, Japan

Junichiro Sugimoto