Silentype Thermal Printer


At A Glance

The Silentype Thermal Printer was Apple’s first printer released in 1979. It was a quiet, versatile and compact thermal graphics printer that offered increased flexibility over other printers at a fraction of the cost.

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Original Specifications

  • Text Mode:
    • Print Rate: Up to 40 characters per second, bidirectional
    • Line Length: 80 characters
    • Horizontal Spacing: 10 characters per inch
    • Vertical Spacing: 6 lines per inch
    • Line Feed Time: 65 milliseconds
    • Character Format: upper and lower case, 5×7 pixels
  • Graphics Mode:
    • Print Rate: 240 columns of 7 dots each per second
    • Line Length: 480 dots
    • Horizontal Spacing: 60 dots/inch
    • Vertical Spacing: 60 dots/inch
    • Line Feed Time: 55 milliseconds


  • Interface:
    • Power Supply: From connected Apple computer via 9-conductor data/power interface cable
    • Interface: Custom synchronous serial
    • Interface Cable: 9-conductor, 1.2 meters (3.5 feet) length
  • Paper:
    • Width: 21.6 cm (8.5 inch)
    • Length: 24.4 m (80 ft)
    • Technology: Thermal, low temperature, black image



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