Octaprint owns two Indigo presses operated from Hyderabad and Chennai, Indigo is a series of digital offset printing presses developed by Benny Landa in Ness Ziona, Israel.
HP Indigo presses are used in production commercial and label converting environments to print applications such as marketing collateral (e.g. brochures, business cards, posters, etc.) photo, direct mail, labels, folding cartons, flexible packaging, shrink sleeves, books, magazines, manuals, and specialty applications . Its ability to print without films and plates enables it to create personalized short runs, changing text, images and jobs without having to stop the press. Each press has up to 7 color stations, which can use cyan, magenta, yellow, black and a variety of special and spot color inks
HP Indigo today
Under the ownership of HP, Indigo developed and grew to become the world leader in digital commercial presses. The company is ranked No. 1 in the US high-volume digital press market and, according to HP officials, has a 75% share of the world market for digital commercial photo printing.
In August 2009 HP announced that there are now more than 5,000 HP Indigo digital presses in operation around the world.
The technology is based on HP ElectroInk, which uses small colour particles suspended in Imaging Oil (Isopar) that can be attracted or repelled by means of a voltage differential. The ink forms a very thin and smooth plastic layer on the paper surface. The fact that these particles are so small ensures that the printed image does not mask the underlying surface roughness/gloss of the paper, as can be possible with some toner-based processes, bringing Indigo printing closer in appearance to conventional offset lithography, whereby ink is actually absorbed into the paper.
HP provides the option for users to mix their own ink colours to match Pantone references. This is common with non-digital offset litho presses, and is one of the features that distinguishes the HP Indigo process. "Off-press" colours are mixed from 11 colour (from the 15 original) Pantone spectrum at an offline, ink mixing station. Users can also order special pre-mixed colours from HP Indigo, for example fluorescent pink. HP Indigo presses are available in configurations supporting four, five, six or seven colours.
Operators are trained by HP at specialist centres in Barcelona (ESP) or Andover (MA) in the U.S.. There are two main courses, initially a certified operator qualification and, once some experience has been gained with day-to-day maintenance issues, an advanced (also known as DPP or shared maintenance) course.
The Series 2 printing engine can be easily differentiated from the original format by the double sized PIP (dynamic plate), which allows the press to run twice as fast. Current models in this series include the HP Indigo press 5500, 3500 and w3250 (Commercial) and HP Indigo press ws4500 (Industrial). Previous Series 2 models included the UltraStream 2000, HP Indigo press 3000, 3050, w3200, 5000, HP Indigo press ws4000 and ws4050.
The Series 3 printing engine was introduced with the launch of the 7000 series at drupa 2008. Products in that family of presses include the HP Indigo 7000, 7500 and 7600 digital sheetfed presses, as well as the rollfed W7200, W7250 and WS6000 for the commercial markets. For the There are several versions of the HP Indigo press, which can be broadly grouped by the Printing Engine (Series 1,2,3 or 4) and by application - either Commercial (sheet-fed, mainly for paper printing), or Labels & Packaging(web-fed, labelling and flexible packaging). HP introduced the Series 3 engine at Drupa 2008. The first model to be introduced was the HP Indigo 7000 Digital Press (Commercial). In March 2010 the HP Indigo 7500 Digital Press (Commercial) was released.