HP Indigo

HP Indigo is a family of commercial digital presses and a business unit within Hewlett-Packard that focuses on high-resolution, offset-like digital color printing for labels, packaging, commercial print, and photo markets. Developed originally by the Israeli company Indigo founded by engineers from Technion – Israel Institute of Technology alumni and venture-funded by entities including Pitango Venture Capital and Sequoia Capital, the technology was acquired by Hewlett-Packard in 2001 and integrated into HP's graphic arts and production workflow offerings. The Indigo platform combines proprietary liquid electrophotography with industrial automation and color management systems used by major print houses such as Cimpress, RR Donnelley, Quad/Graphics, and brand owners in Procter & Gamble supply chains.

History

The company originated as Indigo Digital Printing Technologies in the late 1970s and 1980s with founders who were alumni of Technion – Israel Institute of Technology and researchers linked to projects at Weizmann Institute of Science. Early commercialization in the 1990s led to adoption by photographic print labs and short-run commercial printers competing with firms like Kodak and Xerox. A strategic acquisition by Hewlett-Packard in 2001 followed a period of consolidation in the printing industry alongside mergers involving Eastman Kodak Company acquisitions and partnerships with FujiFilm. Under Hewlett-Packard, Indigo technology expanded into labels and flexible packaging markets, competing with analogue offset and gravure suppliers including Heidelberg Druckmaschinen and Bobst. Over decades, alliances with workflow providers such as Esko and finance arrangements with corporates like Goldman Sachs facilitated global deployment across Europe, North America, and Asia-Pacific.

Technology and Printing Process

Indigo presses use a proprietary Liquid Electrophotography (LEP) process that differs from dry toner systems deployed by Xerox and Canon. LEP deposits an electrically charged photoconductor image then transfers a thin, electrically charged liquid ink layer known as ElectroInk onto substrates—a method historically contrasted with offset lithography used by Manroland and gravure processes practiced by Akiyama and Nippon gravure. The platform integrates high-resolution imaging engines, closed-loop spectrophotometers, inline densitometers, and automated calibration modules borrowed from instrumentation approaches found at Agfa-Gevaert laboratories. Color management leverages ICC profiles and standards promulgated by organizations such as IDEAlliance and FOGRA, while RIP and workflow integration employ solutions from EFI and Harlequin to manage variable data printing demands used by transactional printers like Pitney Bowes clients.

Product Line and Models

The product family includes models positioned for different market segments: digital commercial presses for book and brochure production, label presses for self-adhesive applications, and high-speed web presses for folding carton and flexible packaging. Notable model families from the Indigo lineage have been marketed alongside HP's industrial offerings used by packaging converters including Amcor and Smurfit Kappa. The lineup evolved to include production platforms integrated with HP PrintOS cloud services and finishing modules from partners such as Molins and Kama. Service networks and spare parts supply chains often interface with multinational distributors including Ricoh and Canon Solutions America for broader aftermarket support.

Applications and Markets

Indigo systems serve a wide array of applications: short-run commercial print for publishers like Penguin Random House, photo book and lab services competed for by Shutterfly, labels and shrink sleeves for consumer goods companies including Unilever, and flexible packaging for food and beverage brands such as Nestlé. The technology is also deployed in direct mail and transactional printing used by financial services firms like American Express and healthcare providers handling variable data materials. Geographic markets include Europe, North America, Latin America, and Asia, with notable installations tied to regional converters such as DS Smith and Cenveo.

Quality, Color Management, and Performance

HP Indigo presses are prized for high resolution, smooth tonal gradations, and spot color fidelity achieved through ElectroInk chemistry and multi-pass imaging, aiming to match or exceed results from offset and gravure suppliers like Heidelberg and Manroland. Color control systems implement spectrophotometric profiling in accordance with industry standards from ISO committees and testing protocols from Fogra. Performance metrics emphasize throughput (sheets per hour), uptime, and substrate flexibility; these are benchmarked by trade bodies such as PRINTING United Alliance and audited in procurement by multinational brand owners. Variable data capabilities, supported by high-speed RIPs and data-management systems, enable personalization workflows comparable to offerings from Xerox FreeFlow and Kodak Prosper platforms.

Environmental Impact and Sustainability

Indigo platforms incorporate initiatives to reduce waste, energy consumption, and chemical footprint relative to analogue processes, aligning with sustainability frameworks promoted by Sustainable Packaging Coalition and reporting standards like Global Reporting Initiative. The liquid ElectroInk system and inline process reduce make-ready waste compared with analogue offset, while HP and partners pursue closed-loop recycling programs involving converters such as Stora Enso and material suppliers like BillerudKorsnäs. Lifecycle assessments and certifications—engaged with agencies similar to UL and Greenguard—address concerns over volatile organics and substrate recycling in flexible packaging streams.