OKI Microline 320 Turbo 9-Pin Dot Matrix Printer GE7000B

OKI Microline 320 Turbo 9-Pin Dot Matrix Impact Printer (Model: GE7000B)

The OKI Microline 320 Turbo (GE7000B) is a 9-pin SIDM (Serial Impact Dot Matrix) narrow-carriage printer engineered for mission-critical data logging, harsh environment automation, and multi-part continuous form recording. Developed specifically to endure environments with sustained mechanical vibration, wide operating thermal windows, and dirty electrical lines, the ML320 Turbo delivers uninterrupted operation where consumer inkjet and thermal mechanisms fail.

Featuring an ultra-durable 9-pin printhead rated at 400 million characters and a high-efficiency rack-and-pinion carriage drive, the unit prints at sustained bursts up to 435 characters per second (CPS) in Super Speed Draft mode. It natively processes continuous multi-part forms up to 6 parts (1 original + 5 carbonless copies) with zero loss of impact force on the final ply. With native IEEE 1284 bi-directional parallel and RS-232C serial/USB interfaces (module-dependent), the GE7000B bridges legacy serial automation with modern telemetry systems.

Model Details

• Product Series: OKI Microline 300 Series
• Regulatory / Factory Model Number: GE7000B
• Manufacturer Part Numbers (MPN): 62411601 (Standard Parallel/USB Configuration), 62411602 (Parallel Only), 41716501
• Print Technology: Serial Impact Dot Matrix (SIDM)
• Pin Configuration: 9 Pins (0.3 mm / 0.012 in diameter, cobalt alloy)

Technical Specifications

Key Features

1. Extreme Mechanical Durability: 20,000 Power-On Hours (POH) Mean Time Between Failures (MTBF) at a 25% duty cycle, supported by a 400-million-character patented Stored-Energy printhead.
2. Heavy Multi-Part Handling: Drives 6-part stationery (original + 5 carbonless copies) via rear/bottom push and pull tractor feeds with zero print skew across continuous runs.
3. High-Speed Throughput: Executes up to 435 CPS in Super Speed Draft (12 CPI), 390 CPS in High-Speed Draft (10/12 CPI), and 75 CPS in Near Letter Quality (NLQ).
4. Industrial Emulation Versatility: Native hardware switching between Epson FX (ESC/P) and IBM Proprinter III/II formats, allowing plug-and-play replacement of obsolete plant terminals.
5. Zero-Tear Paper Management: Dedicated tear-bar positioning automatically advances printed receipts, alarms, and manifests without wasting adjacent continuous tractor sheets.

Applications

• Marine Engine Automation & Alarm Logging: Direct recording of Voyage Data Recorder (VDR) output, integrated bridge navigation telemetry, central engine alarm logs, and cargo control room alarms.
• GMDSS & Navtex Hardcopy Terminals: Uninterrupted logging of Inmarsat-C telex messages, maritime safety information (MSI), and Navtex broadcasts over NMEA 0183/RS-232 serial loops.
• Industrial Weigh-Scale & Batch Terminals: Harsh-environment printing of heavy industrial weigh-bridge tickets, concrete plant batch logs, and mining facility weigh slips.
• Hazardous & Heavy Manufacturing Facilities: Continuous shop-floor multi-ply shipping manifests, pick lists, and material tracking run within non-climate-controlled factory conditions.
• Substation & Electrical Grid Event Recording: Hardcopy sequential-events recorders (SER) and telemetry data points on isolated utility lines.

Compatibility

• Marine Bridge / Navigational Equipment: Furuno (VR-3000/VR-5000 VDR, Felcom 15/18 Inmarsat-C), JRC (JCY-1800/1900 VDR, JUE-85/87), Sailor/Thrane & Thrane (TT-3020C, TT-3026), Sperry Marine VoyageMaster VDR.
• Automation & Engine Monitoring Systems: Kongsberg Maritime (K-Chief 500 / 600, AutoChief), Wärtsilä Valmarine, ABB Ability Marine, Siemens SIMATIC S7-300/400 automation stations.
• Industrial Weighing Terminals: Mettler Toledo (JagXT, IND560, IND780), Rice Lake 920i, Avery Weigh-Tronix.

Frequently Asked Questions

What makes the OKI Microline 320 Turbo GE7000B suitable for marine engine rooms?

The printer uses a 9-pin stored-energy magnetic printhead and a sealed rack-and-pinion carriage mechanism that tolerates airborne fuel oil mist, high ambient temperatures up to 40°C, and structural vessel vibrations. It logs raw ASCII text straight from serial ports without requiring operating system spoolers.

How do I configure the GE7000B between Epson FX and IBM Proprinter modes?

The emulation mode is set through the printer’s non-volatile hardware menu. Hold the SHIFT key while pressing SEL to enter Menu Mode. Press GROUP until reaching the “Emulation” parameter, press ITEM to cycle between IBM Proprinter III, Epson FX, and ML Native, then press SHIFT + SEL to save the setting to the onboard EEPROM.

Can the OKI ML320 Turbo replace an obsolete dot matrix printer on a marine VDR or Navtex?

Yes. The ML320 Turbo GE7000B directly replaces aging marine printers such as the OKI ML182, ML184, ML280, and Epson FX-880. By installing the optional RS-232C serial expansion board, you can match legacy baud rates, pin allocations, and protocol handshaking to interface seamlessly with existing maritime consoles.

Can this printer handle 6-ply carbonless forms without jamming?

Yes. When configured with a bottom-feed push tractor path, the printer processes forms up to 6 plies (1 original plus 5 carbonless copies) with a maximum paper thickness of 0.44 mm (0.017 inches). Setting the manual head gap lever to position 5 prevents paper binding and needle drag.

What is the difference between model numbers ML320 Turbo and GE7000B?

“OKI Microline 320 Turbo” is the commercial trade name, while GE7000B is the underlying manufacturer factory model and regulatory type stamped on the back compliance plate. Replacement assemblies, mainboards, power modules, and type-approval documents routinely refer to the GE7000B designation.