Abstract: 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.

Abstract: The composition of the present disclosure is a composition included in a pretreatment agent set to be applied to a fabric prior to ejection of a pigment ink by an ink-jet printer, wherein the composition contains at least one of an amino acid or a cross-linking agent, and the cross-linking agent contains an oxazoline group-containing compound.

Abstract: A platen is configured to define a contact surface which is a medium placement surface when being mounted on a printer. The platen includes: first and second members having first and second surfaces, respectively. The first member includes a plate having the first surface. A state of the platen is switchable between: a first state in which the contact surface is formed inside an outer edge of the plate by the first and second surfaces to have a first area; and a second state in which the contact surface is formed by the first surface to have a second area smaller than the first area. In the second state, the first surface forms the contact surface inside the outer edge and the second surface does not form the contact surface.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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° 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.

Abstract: 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.

Abstract: 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.

Abstract: 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° 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.

Abstract: 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.

Abstract: The present invention provides a discharge printing agent containing thiourea dioxide, wherein the discharge printing agent further contains at least one of the following components (i) and (ii): (i) at least one salt selected from the group consisting of a salt of monocarboxylic acid, a salt of ascorbic acid, and a salt of metasilicic acid; and (ii) ?-diketone.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.