The principle of digital inkjet printing process - digital ink jet printing, principle - Printing In

Digital inkjet printing, also known as color ink-jet printing, it is from scanner or digital camera and other input devices, the necessary input to the computer graphics, editing by electronic color system, then computer-controlled spray ink jet directly to the dye or pigment to the fabric on the printing, inkjet printing can be divided according to principle of continuous ink-jet ink-jet type and on-demand inkjet two.



Print Network HC Digital Ink jet Print Also known as color ink-jet printing, it is through Scanners Or input devices such as digital cameras, the necessary input to the computer graphics by Electronic Separation System of editing, then controlled by the computer system directly to the dye ink or pigment to the fabric on jet printing, inkjet printing can be divided according to principle of continuous ink jet inkjet and Demand Inkjet two.



1. Continuous jet CIJ (Continuous lnk Jet)

Continuous jet principle is to impose high-frequency vibration through the pressure of the ink, the ink ejected from the nozzle in the continuous formation of droplets of uniform flow. The nozzle has a photoelectric conversion signal synchronized with the graphical changes in the electric field. Droplets emitted electric field in the charging zone power to choose, when droplet flow to continue through the deflection field, the charged droplets in the electric field under the influence of deflection, is not charged droplets to maintain straight flight. Droplets flying straight



Inaccessible substrates was set liquid recovery device. Charged droplets sprayed into the substrates and the completion of printing.



2. Demand jet DOD (Drop On Demand)

On-demand jet printing system works is when you need Printing , The system of the ink within the nozzle by high frequency mechanical force, electromagnetic thermal shock, so that the formation of tiny droplets from the nozzle is controlled by computer to set spray pattern Office. On-demand jet is the most widely used thermal inkjet technology, which relies on heat pulse generated droplets is controlled by computer to the provisions of a resistance wire heating temperature, resulting in ink gas (fog) from the nozzle of the future. Another DOD Injection System technology is the voltage, that is controlled by computer in the conductive material on the imposition of a potential to produce conductive material compression in the electric field in the vertical direction of the swelling, so that ink ejected.



Requires not only high-precision ink-jet printing nozzle technology, high-precision control technology, also requires a high purity, high density, high fastness and high stability of the ink (ink) with match, only value .



3. Digital ink-jet printing process Ink-jet printing process with the ink used may be generally used for carpet printing acid dyes, disperse dyes mainly used in polyester fabric, cotton fabric is mainly used for reactive dyes. The following ink for cotton fabrics with reactive dyes of the inkjet printing process with an example.



Pretreatment drying inkjet printing prepress India steam after the drying (100 ~ 102 , 8min) water washing drying.



Fabric fabric pre-treatment mainly due to the wettability and the capillary effect between the fibers of conventional textile printing paste must use the appropriate dressing to seepage of printing. General inkjet Printer Use only low viscosity water-based ink, if printing directly to fabric, the cause of dye penetration in all directions, it is necessary to conduct proper pre printed fabrics. Jet printing when using specialized software to conduct the appropriate resolution



Lines, pattern Print , Printed fabrics reprocessing is to increase its solid color fastness.