CalComp 68436 Color Electrostatic Plotter 36" Wide Format 100-240V PN 21765-0019

CalComp 68436 Color Electrostatic Plotter 36" Wide Format 100-240V PN 21765-0019

The CalComp 68436 is a 36-inch wide-format color electrostatic plotter designed for high-resolution large-format output. Electrostatic plotters like the 68436 use a charged-stylus array across the full print width to deposit toner in precise patterns, producing color engineering drawings, GIS maps, and technical graphics at speeds far exceeding pen plotters. The 68436 was a professional-grade unit aimed at CAD/CAM, mapping, and technical illustration environments. This unit appears visually complete and includes all internal controller boards (photographed separately); however, it has not been tested and is being sold AS-IS for parts or repair.

Specifications & What's Included

• Model: CalComp 68436
• Part Number: 21765-0019
• Print Width: 36" wide format
• Output Type: Color electrostatic
• Voltage: 100–120V / 200–240V AC (dual-voltage)
• Frequency: 50/60 Hz
• Current: 12A (100–120V) / 8A (200–240V)
• Power: 970W
• Interfaces: PAR 1 — Centronics parallel port
• Interfaces: PAR 2 — Centronics parallel port
• Interfaces: COM 1 — DB25 serial port
• Interfaces: COM 2 — DB25 serial port
• Interfaces: TERM — DB25 terminal port
• Front panel: LCD status display, Auto/Alert LEDs, Auto, Cancel, Feed, Cut buttons, power rocker switch
• Form factor: Floor-standing cabinet with dual lower doors
• Internal drum/roller assembly with multi-color toner applicators visible and present
• Three large controller PCBs present — removed for photography, included with unit
• Internal power supply unit present inside lower cabinet
• Internal driver sub-board with DB25 connector and terminal blocks present
• No cables or print media included

Applications

CalComp was one of the leading names in large-format output throughout the 1970s, 1980s, and into the 1990s, serving engineering, architecture, GIS/mapping, and defense/aerospace customers. The 68436 belongs to CalComp's electrostatic plotter line, which occupied a distinct niche between slower pen plotters and expensive laser-based large-format systems. Electrostatic plotters were the preferred output device in CAD/CAM environments that needed high throughput on engineering-size media — D and E-size drawings as well as roll-fed stock. They connected to workstations and minicomputers via parallel and serial interfaces, making them compatible with a wide range of host systems from that era. Today, units like this are primarily sought by collectors of vintage CAD/printing equipment, institutions with legacy support needs, or technicians harvesting controller boards, print heads, and mechanical assemblies for repair of other CalComp units.