The MCP7870 Series are ultra-compact, lightweight, portable thermal printers with an ―easy-load‖ paper feature.

Housed in an innovative enclosure and designed for maximum flexibility, the series has USB v2.0 interface via USB mini-B

Power options include rechargeable NiMH batteries, alkaline batteries, an external 5Vdc Universal Power

Supply or an external 10-35Vdc power supply. Rechargeable batteries may be continuously trickle charged from a mains power adapter, or a 12Vdc supply and a fast charge facility is incorporated.

Many different modes of operation are possible, including numerous character sets, all selectable by software commands.

The MCP7870 Series is from a range of thermal printers designed and manufactured in the UK by Martel Instruments.

All units are built into robust ABS housings, with a choice of colours. We would be pleased to discuss the possibility of customising any aspect of the printer to specific requirements.


  • Easy-Load paper feature
  • USB 2.0 interface
  • Power supply options
  • High speed, high resolution printing capability
  • Quiet, non-impact system
  • Maintenance-free
  • Ultra-Compact and light weight
  • High reliability line head mechanism
  • Versatile for use with text or graphics
  • 24, 32 or 48 characters per line
  • Barcode capability
  • Auto off mode
  • Range of configurable options
  • Windows driver for XP and 2000
  • Low Profile paper lid and protective boot available

Caractéristiques techniques

Printing method
Direct thermal line head
Printing width (mm)
Paper width (mm)
Paper capacity
45mm dia. 25m (standard printer) / 32mm dia, 10m (low profile printer)
Recommended paper
Printing speed (mm/s)
10 lines per second (max), MCP7870B 5 lines per sec
Weight (g)
400g approx (inc batteries and paper)
Power supply
MCP7870 internal 4 x 1.2V NiMH 1600mAH, AA cells / MCP7870B internal 4 x 1.5V alkaline, AA cells / MCP7870V external 10-35Vdc / MCP7870X external 5Vdc
Operating temperature (°C)
0oC to +50oC
Storage range
-20oC to +60oC
Charging range
+10oC to +45oC
Approx. 10 Million lines (20oC, print ratio = 25%)
Dimensions (WxDxH mm)
85.5mm x 150mm x 55mm (45mm low profile printer)
Character set
Character size
3mm x 2mm, 3mm x 1.5mm or 3mm x 1mm (Approx. 13, 17 or 25cpi)
Characters per line (max.)
48, 32, 24 (default)
Character matrix
24x8, 24x12 or 24x16
Horizontal dot pitch
0.125mm (Approx. 200dpi)
Vertical dot pitch
Text line composition
24x384 dots
Data format USB v2.0 / Connector USB mini-B / Buffer size 5 Kbytes
Country codes
France, Germany, UK, Denmark I/II, Sweden, Italy, Spain & Japan