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Calcomp Technology, Inc., usually known as Calcomp, was a company best known for its Calcomp plotters, which it was founded to produce in 1959. It produced a wide range of plotters (both drum and flat-bed), digitizers, thermal transfer color printers, thermal plotters (InfoWorld June 13, 1994 p. 40) and other graphic input/output devices. It also produced IBM plug compatible (PCM) disk and tape products. The disk products ranged from 2311 (CD-1) through 3350 equivalents. The tape product was a 3420 equivalent.

CalComp (California Computer Products), Anaheim, California was bought by Lockheed in the 1980s.

Calcomp acquired Talos and Summagraphics, which had acquired Houston Instruments.

Calcomp Technology shut down its operations in 1999 and transferred different product lines to various other companies, some of whom continue to use the "Calcomp" or other "Cal-" trademarks:

  • Technical Services and spare parts: CalGraph Technology Services, Inc.
  • TechJet 5500 Large Format Inkjet Plotter / Printer Information: CalComp Graphics.
  • Digitizer, Tablets and scanners: GTCO CalComp, Inc.
  • Film Imaging Systems: EcoPro Imaging (now part of OYO Instruments)
  • Cutter and sign maker products: Westcomp