The present disclosure relates to methods and apparatuses for printing and drying inks on substrates. Printing systems may include a metering device positioned between a printing station and a light source. During operation, the printing station deposits ink onto a substrate to define a printed region. And the light source directs infrared light onto the substrate to define an illumination zone. The printed region is advanced from the printing station to the metering device and from the metering device through the illumination zone, wherein the ink is dried with infrared light traveling from the light source, which also heats the substrate and changes the modulus of elasticity of the substrate. In turn, the metering device isolates the printing station from the change in the modulus of elasticity to help reduce phase shifts caused by changes in the modulus of elasticity resulting from heat in the substrate.

A light irradiation device according to the disclosure comprises: a light source comprising a plurality of light-emitting elements; a heat-dissipating member thermally connected to the light source; an air blower section capable of blowing air on the heat-dissipating member; a drive section which drives the light source; and a housing which receives therein the light source, the heat-dissipating member, the air blower section, and the drive section, the housing comprising a plurality of ventilating slots serving as inlets and outlets for outside air, a lower face provided with an irradiation opening for external irradiation of light from the light source, a side face which is vertically oriented, and an inclined face which is located on an upper side of the housing and is opposed to the lower face, and the inclined face is provided with at least one ventilating slot.

Provided is an inkjet printing device including an ink storage unit configured to store an ink, an ejection head configured to eject the ink to form a print layer, and a heating unit configured to heat a material to be printed, wherein the ink is an aqueous clear ink including a resin and water, the inkjet printing device has a low gloss printing mode that is a printing mode for imparting low gloss, and a high gloss printing mode that is a printing mode for imparting high gloss, and the heating unit is configured to heat to satisfy the following formula T.sub.matte>T.sub.gloss, where T.sub.matte (degrees Celsius) is a temperature of a low gloss printing region of the material to be printed where the low gloss printing region is printed with the low gloss printing mode when the aqueous clear ink is deposited on the material to be printed, and T.sub.gloss (degrees Celsius) is a temperature of a high gloss printing region of the material to be printed where the high gloss printing region is printed with the high gloss printing mode when the aqueous clear ink is deposited on the material to be printed.

A printer includes at least a first printhead and a second printhead, each of which is operatively connected to a source of aqueous ink having a color that is different than the color of aqueous ink connected to the other printhead. A first source of infrared (IR) radiation is positioned between the first and second printheads and a second source of IR radiation follows the first and second printheads. The first source of IR radiation is tuned to heat color pigment particles in the aqueous ink connected to the first printhead only and the second source of IR radiation is tuned to heat color pigment particles in the aqueous ink connected to the second printhead only.

Provided is a recording method including: a first applying step of applying anionic first processing liquid on a medium; a second applying step of applying cationic second processing liquid on the medium, causing the first processing liquid and the second processing liquid to react with each other, and generating mixed liquid, subsequently to the first applying step; and a first drying step of drying the mixed liquid subsequently to the second applying step, in which the mixed liquid is cationic.

A processing device includes a first light source and a second light source configured to emit light having a peak wavelength from 900 nm to 2,100 nm, a first light receiving portion, a second light receiving portion, and a processing portion configured to subject a medium to processing of increasing or reducing an amount of moisture contained in the medium. the first light source and the first light receiving portion are positioned upstream of the processing portion in a transport direction of the medium, the first light source irradiates, with light, the medium, the first light receiving portion receives light reflected by the medium, the second light source and the second light receiving portion are positioned downstream of the processing portion in the transport direction, the second light source irradiates, with light, the medium, and the second light receiving portion receives light reflected by the medium.

Disclosed is a carriage for a direct to garment inkjet printing machine. The machine has a frame having a leading edge, a trailing edge, and a pair of opposed lateral edges. A first row of slots is positioned on the leading edge and a second row of slots is positioned on the trailing edge. The second row of slots is spaced from the first row of slots by a gelling gap. A shelf on the frame supports tanks of white ink and tanks of color ink and a first plurality of tubing connects a tank of white ink positioned on the shelf with a print head in the first row of slots. A second plurality of tubing is for connecting a tank of color ink positioned on the shelf with a print head in the second row of slots. A pair of side heaters attached to opposed lateral edges of the first frame.

A printing apparatus includes a conveyance unit, a printing unit, and a heating unit that heats a print medium. The conveyance unit conveys the print medium such that the printing unit can print an image onto a second print region at a printing position when the heating unit can heat a first print region at a heating position. If the ink amount applied to the first print region is a first amount, an image is printed onto the second print region in a first mode. If the applied ink amount is a second amount larger than the first amount, an image is printed onto the second print region in a second mode. A time for which the first print region passes through the heating position in the second mode is longer than a time for which the first print region passes through the heating position in the first mode.

A heating device includes a heat irradiator configured to heat a sheet on which a liquid is applied and is conveyed in a conveyance direction, an ultraviolet irradiator on a downstream of the heat irradiator in the conveyance direction, the ultraviolet irradiator configured to heat a portion of the sheet, and a circuitry configured to control an output of the heat irradiator and an output of the ultraviolet irradiator based on a thickness of the sheet.

Systems and methods for evenly heating a drum dryer of a print system. In one embodiment, the dryer is configured to rotate about an axis oriented in a lateral direction, to receive a radiant energy source disposed inside the drum that extends between each lateral end of the drum in the lateral direction, and to receive a reflective assembly inside the drum that includes an inner portion and an outer portion. The inner portion surrounds the radiant energy source and removably attaches the reflective assembly to a lateral end of the drum. The outer portion extends from the inner portion in a radial direction of the drum that is perpendicular to the lateral direction. The outer portion includes a reflective surface that reflects radiant energy from the lateral end to the central portion of the drum in contact with the web.