Brother Kogyo Kabushiki-kaisha

Goro Okada

Takao Hyakudome

Ryohei Yagi

Katsunori Nishida

Haruo Kobayashi

Reiko Nishikawa

Ryuji Kato

Akira Nishio

Toshiaki Mizutani

Tomoyuki Fujita

Yugo Fukui

Atsushi Naruse

Ai Tahara

Kunihiro Fujita

An image forming apparatus includes a supplier and an inkjet head. The supplier supplies, to a medium to be printed, a dye-transfer suppression agent that suppresses a dye or a pigment dyeing chemical fibers constituting the medium to be printed from transferring to a print surface formed on the medium to be printed. At least one of a platen on which the medium to be printed is placed or the supplier is moved to supply the dye-transfer suppression agent to the medium to be printed. The inkjet head ejects ink for forming the print surface to an area to which the dye-transfer suppression agent is supplied.

Image forming apparatus and image forming method

An overcoat to be applied to an ink printed on fabric or fabric to be printed with an ink, includes: a carbodiimide group-containing compound.

Overcoat and image forming method

An overcoat to be applied to an ink printed on fabric or fabric to be printed with an ink, includes: an oxazoline group-containing compound.

A discharge printing device includes an application unit configured to apply a reducing agent to fabric and a contact heating unit configured to subject a reducing agent-applied area to contact heating and satisfies any of the conditions (a1)-(c1) and (d1)-(e1): the conditions (a1)-(c1): in the contact heating, a heating temperature is 100&#xb0; C. or more, and a heating time is 60 seconds or more; the conditions (d1)-(e1): the contact heating unit subjects the reducing agent-applied area to contact heating to accelerate a reduction reaction and subjects, after the acceleration of the reduction reaction, the reducing agent-applied area to contact heating to accelerate an oxidation reaction, or the discharge printing device further comprises a non-contact heating unit, and the non-contact heating unit subjects, after the acceleration of the reduction reaction, the reducing agent-applied area to non-contact heating to accelerate an oxidation reaction.

Discharge printing device and discharge printing method

The pretreatment agent is a pretreatment agent to be applied to fabric before application of an ink in formation of an image on the fabric and contains a water-based polymer virtually containing no carboxyl group and a crosslinking agent that is crosslinkable with a carboxyl group in a component contained in the ink.

Pretreatment agent, pretreatment agent applicator, and method for forming image

A print device includes a processor and a memory. The memory storing computer-readable instructions which, when executed by the processor, perform processes. The processes include covering processing controlling a cap into a covering state in which the cap covers a nozzle. The processes include first purge processing purging, in a state in which the cap is in the covering state and a supply valve is closed, an ink from the nozzle by operating a pump at a first rotation speed. The processes include injection processing injecting, after the first purge processing and in a state in which the cap is in the covering state and the supply valve is open, the cleaning liquid into the interior of the cap by operating the pump at a second rotation speed to cause the cleaning liquid to soak a nozzle face.

Print device

A print device includes a processor, and a memory. The processor performs processes. The processes include a covering control processing controlling the cap into a covering state in which the cap covers the nozzle. The processes include supply processing supplying, after the covering control processing, the cleaning liquid to the cap from the supply flow path. The processes include hold processing holding, after the supply processing and in a state in which the cleaning liquid has soaked the nozzle face, the cleaning liquid in the cap. The processes include first determination processing determining, after the hold processing, whether a print request has been received. The processes include discharge processing discharging, in a case where a power on signal has been detected or in a case where the first determination processing has determined that the print request has been received, the cleaning liquid that has been held in the cap.

The present invention relates to a reducing agent containing thiourea dioxide. The reducing agent contains thiourea. The reducing agent contains carboxylate. The carboxylate includes at least one of aliphatic monocarboxylate, an aliphatic monocarboxylic acid derivative salt, and malonate. Therefore, the reducing agent exerts a good reducing ability and a good long-term stability effect.

Reducing agent, ink-jet recording apparatus, discharge printing method, image forming method, reducing agent stabilizing method, and reducing agent enhancing method

Provided is a treatment agent used for forming an image on fabric, containing a resin emulsion and a metal salt. A pH of the treatment agent is in a range from 5.5 to 9. The pH may be adjusted using a pH adjuster. Examples of the pH adjuster include sodium bicarbonate, potassium carbonate, calcium carbonate, sodium hydroxide, sodium carbonate, triethanolamine, and N-butyl diethanolamine.

Treatment agent, method for forming image, method for producing treatment agent, method for producing fabric having image, and fabric having image

A discharge-printing treatment agent storage container includes: a first treatment agent-storage container; and a second treatment agent-storage container. The first treatment agent-storage container is provided with an introduction port for introducing a second treatment agent. The introduction port is sealed with a seal member. The second treatment agent-storage container is provided with a discharge port for discharging the second treatment agent. The discharge port is linked to a discharge tube. The tip of the discharge tube is capable of being placed in the first treatment agent-storage container by releasing the introduction port from being sealed with the seal member.

Discharge-printing treatment agent storage container

Provided is an image forming method for forming an image on fabric including a treatment step of applying a treatment agent on fabric, an image printing step of printing an image on a treatment agent-applied area with an ink, and a heat-fixing step of heat-fixing the ink on the fabric. The treatment agent used in the treatment step includes at least one of the following component A and the following component B: Component A: a diallyldimethylammonium chloride-sulfur dioxide copolymer Component B: a mixture of an allylamine-diallylamine copolymer and sodium chloride.

Method for forming image, method for producing fabric having image, and treatment agent

The present invention provides a method of ink-jet recording that includes the steps of pretreating by applying a pretreatment liquid onto a recording medium in advance of ink-jet recording, and recording by ejecting a pigment ink onto the recording medium by an ink-jet method. The pretreatment liquid includes the following components (i) and (ii), and water.

Method of ink-jet recording, pretreatment liquid, ink set, and ink-jet recording apparatus

The recording apparatus includes a conveyor and a recording head which records an image to a recording medium being conveyed by the conveyor. The conveyor includes a circumferential wall, and conveys a recording medium placed on an outer circumferential surface of the circumferential wall, by rotation of the circumferential wall. The recording head includes an ejection surface where a plurality of nozzles are open, which nozzles eject at least one liquid droplet. The circumferential wall includes a tube-shaped base, and one or more detachable plates detachably attached to an external surface of the base.

Inkjet recording apparatus

An ink refilling device including a supply portion to be connected to an ink cartridge and supply ink, an ink tank, a first connecting tube having one end connected to the ink tank, a three-way switching valve including an input end connected to the other end of the first connecting tube, a first output end and a second output end, and adapted to switch between a first flow path from the input end to the first output end and a second flow path from the input end to the second output end, a second connecting tube having one end connected to the first output end and the other end connected to the supply portion, a third connecting tube having one end connected to the second output end and the other end connected to the ink tank, and a feed pump provided along the first connecting tube to feed the ink.

Ink refilling device

A water-based ink for ink-jet recording includes a coloring agent, water, and a water-soluble organic solvent. In the water-based ink after drying, a phase (&#x3b4;) obtained by a tan &#x3b4; measured at about 25&#xb0; C. is constantly about 45 degrees or more. In other words, the phase (&#x3b4;) never becomes less than about 45 degrees at a strain amount of about 0.1% to about 100%.

Water based ink for ink-jet recording, ink cartridge, ink-jet recording apparatus, method of evaluating water-based ink for ink-jet recording, and method of producing water-based ink for ink-jet recording

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Nagoya, Japan

Goro Okada