Coding Machines

The continuous inkjet method is used commercially for marking and coding of products and packages. The idea was first patented in 1867 by Lord Kelvin, and the first commercial devices (medical strip chart recorders) were introduced in 1951 by Siemens.^[4]

In continuous inkjet technology, a high-pressure pump directs liquid ink from a reservoir through a gunbody and a microscopic nozzle, creating a continuous stream of ink droplets via thePlateau-Rayleigh instability. A piezoelectric crystal creates an acoustic wave as it vibrates within the gunbody and causes the stream of liquid to break into droplets at regular intervals – 64,000 to 165,000 droplets per second may be achieved. The ink droplets are subjected to an electrostatic field created by a charging electrode as they form; the field varies according to the degree of drop deflection desired. This results in a controlled, variable electrostatic charge on each droplet. Charged droplets are separated by one or more uncharged “guard droplets” to minimize electrostatic repulsion between neighbouring droplets.

The charged droplets pass through an electrostatic field and are directed (deflected) by electrostatic deflection plates to print on the receptor material (substrate), or allowed to continue on undeflected to a collection gutter for re-use. The more highly charged droplets are deflected to a greater degree. Only a small fraction of the droplets is used to print, the majority being recycled.

Continuous ink jet is one of the oldest ink jet technologies in use and is fairly mature. The major advantages are the very high velocity (~50 m/s) of the ink droplets, which allows for a relatively long distance between print head and substrate, and the very high drop ejection frequency, allowing for very high speed printing. Another advantage is freedom from nozzle clogging as the jet is always in use, therefore allowing volatile solvents such as ketones and alcohols to be employed, giving the ink the ability to "bite" into the substrate and dry quickly.

The ink system requires active solvent regulation to counter solvent evaporation during the time of flight (time between nozzle ejection and gutter recycling), and from the venting process whereby air that is drawn into the gutter along with the unused drops is vented from the reservoir. Viscosity is monitored and a solvent (or solvent blend) is added to counteract solvent loss.

• Printing Area:  25MM X 35MM.
• Max. Product Height:   51MM
• Print on:       Pouches, Laminated/plain Labels, Cartons. ETC.......
• Printing Speed: 50 Prints per Minute
• Printing By : Rubber Stereos ( Characters)
• Printing Medium :  Quick Drying INK
• INK Colour:  Black, Blue, Green, Red, Violet, Silver
• Electricity:  230V AC / 50HZ Single Phase Supply
• Machine Weight:  Approx. 7KGS.

The improved Control Print HRC+ Plus is a clutch driven, continuous motion mechanical coder employing Thermal Ink Roll Technology to produce crisp, clear codes in a 38mm x 48mm area at speeds up to 250 packages per minute on practically any flexible packaging material. Specifically designed keeping Indian condition in mind the Control Print HRC+ delivers an externally low cost per print, is maintenance free, and is simple to operate. Key HRC features include: Low maintenance The HRC+ is designed to work in 24x7 environments with minimal downtime and requires no daily maintenance. Simple Operation Thermal inkroll technology eliminates all the spills & splashes typical of other technologies; Inkroll and Type changes practically plug and play and require only a few seconds to accomplish. Ecomomy Low per print cost making it the cheapest method of coding; in addition the robust design of the HRC+ ensures an extremely long-term operational life without any additional expenses on spares or services. Flexibility & Quality The ability to print instant drying, crisp, legible codes on practically any flexible packaging material with the web or across the web, unique mounting brackets also let you set the print location across the web with a single adjustment.