Ink Problems And Pre And Post Processing In Inkjet Digital Printing

Ink jet digital printing ink raw materials include disperse / pigment ink, active / acidic ink, dispersant, surfactant and other auxiliaries.

Inkjet Printing ink There are certain principles in the formulation, one is guided by the customer's product needs, such as dye selection, concentration determination, and auxiliaries. Two, aim at the efficiency and compatibility of sprinklers, such as the ink path, aperture and frequency of sprinkler, and consider compatibility of sprinkler material. The three is to make full use of auxiliary equipment and devices of industrial machines, including white ink agitator, UV ink heat preservation device and filter device.

Characterization of ink jet printing ink: physical and chemical characterization, including particle size (particle size standard), high frequency rheology (2 thousand Hz to 600 thousand Hz), material wettability (surface tension).

Long term characterization should pay attention to shelf life, spanportation conditions and customer use suggestions. The droplet detector includes tube resistance, flow rate, nozzle interference and movement. Attention should not be given to the effective representation of ink on the machine.

stay Ink-jet printing ink dye In terms of R & D, disperse dyes should solve the blue color of sublimation dyes, the influence of disperse blue 359 on the gamut, the chromatic light problem of high-energy disperse dyes and the strength of black dyes.

　　 reactive dye Attention should be paid to the color and fastness of reactive green 14 and 72; the cost of active desalination and purification (30~40 times desalting wastewater); the N content of slurry, namely, the development of urea free low nitrogen slurry. In addition, the strength of dyes, the development of color light and the development of heterocyclic dyes have important influence on the development of dyes.

The development of inkjet printing paste is directed towards printing accuracy and penetration, color rate, quick drying and easy cleaning. However, there is also the feel and fastness of the size of the slurry, and the problem of N content of the active slurry, that is, the development of urea free and low nitrogen containing slurry.