ESSENTIAL ELEMENTS FOR INKJET PRINTING. R.B.CHAVAN Dept. of Textile Technology Indian Institute of Technology Hauz-Khas, New Delhi 110016. COMPUTER. Computer system essential for data processing CPU Pentium IV 600Hz x2 or above OS Windows NT4SP4 Memory 256 MB or above
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ESSENTIAL ELEMENTS FOR INKJET PRINTING
Dept. of Textile Technology
Indian Institute of Technology
Hauz-Khas, New Delhi 110016
Fabric pre-coat machine
Fabric Feeding System
ensures perfect registration and alignment throughout, even for delicate and unstable fabrics such as knits or fine silks. If required, this machine may also pre-heat, dry or set the printed fabric, before finally rolling-up the output smoothly and with even tension.
Ichinose-unit: conveyor belt and dryer
Ichinose uses a conveyor belt to transport and align the textile substrate.
The conveyor belt carrying the fabric gently moves ahead for inkjet printing operation. The print head nozzles are set up right above the carrier belt, and the cloth printed with the inks sprayed from the head nozzles. This can prevent the inks from bleeding onto the cloth. After printing operation the cloth at the exit end is released from the conveyor belt. The conveyor belt can be cleaned whenever necessary
Typical operating parameters for ink-jet engines
The average particle size of disperse ink must be approx. 0,5 micro meter or lower in order to avoid clogging of the nozzles. Electrostatic deflection systems also require that the ink is electrically conducting which is difficult to achieve in organic solvent based systems.
Commercial water-based inks
Digital printing inks for different substrates
*Avoids drying out of the nozzles
Colour gamut with 4 and 6 inks
outside: Hexachrome gamut
Inside: CMYK gamut