SQ-2000

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October 1984

The first commercial Epson inkjet printer

The IP-130K was commercialized in Japan as Epson's first inkjet printer in June 1984. In October 1984 it was introduced outside Japan, where it was known as the SQ-2000.

The SQ-2000 can rightly be called the original model for today's Epson inkjet printers. It was an on-demand inkjet system that fired ink droplets where needed on the page, and piezo elements were used in the print head. The SQ-2000 attracted considerable attention for its comparatively low price as well as for its features. As a business machine it offered the three essential features of low noise, high speed, and clear print.

The SQ-2000 was a monochrome printer that used one color of black ink, which was stored in an off-carriage cartridge. The print head, made of glass with piezo elements measuring 120 micrometers in thickness, had 24 nozzles. Introduced at a time when monochrome text printers were the mainstream and before there were high-nozzle-count inkjet printers, the SQ-2000 was a revolutionary, trailblazing product.

Moreover, the SQ-2000 has left a legacy of technology that continues to this day: modern inkjet printers share the same basic structure and many of the same technical principles that were used in the SQ-2000.

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SQ-2000

Printing method: On-demand inkjet
Printing direction: Bi-directional with logic seeking; uni-directional printing (left to right) in the bit image modes
Print head nozzle count: 24
Character set: Full 96-character ASCII with 11 international character sets
Printing speed: letter-quality text - 105 cps; normal text - 176 cps
Paper: Cut paper (182 - 364 mm); fan-fold paper (139.7 - 406.4 mm) when using the optional tractor unit
Paper-feeding: Friction feed, adjustable sprocket pin feed (with an optional tractor feed)
Dimensions: (W) 595 x (D) 383 x (H) 165 mm
Weight: Approximately 18 kg


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