New Okidata Microline 421 Serial (Black) Mono DOT Matrix Printer

Product Specifications & Hardware Details

• Brand: Okidata
• MPN: 92009703
• Model: Microline 421 Serial (Black)
• Type: 9-Pin Wide Carriage Dot Matrix Impact Printer
• Standard Functions: Heavy-Duty Wide Multi-Part Forms Printing, Industrial Label Processing, Spreadsheet and Manifest Output, High-Volume Continuous Data Logging.
• Optional Functions: Top Pull Tractor Kit, Wide Bottom Push Tractor, Roll Paper Stand, External OkiLAN Ethernet Network Print Server.
• What's Included in the Box: Okidata Microline 421 Printer (Black Chassis), Standard Wide Rear Push Tractor Assembly, Bottom Feed Track, Black Fabric Ribbon Cartridge, Setup Documentation Guide, and Power Cable.
• Required Items (Sold Separately): Continuous Wide Fanfold Paper Stock (Single or Multi-part carbonless), and an RS-232C Serial interface connection cable.

Technical Specifications

Available Options & Consumables

We stock a full range of official accessories and replacement supplies for the Okidata Microline 421 Serial (Black). You can add these to your order directly from the accessories tab below:

• Replacement Ribbon: Genuine Okidata 42073802 Wide Carriage Black Fabric Ribbon Cartridge (Estimated 4 million characters)
• Hardware Upgrades: Top Pull Tractor Assembly mechanism, Wide Bottom Push Tractor, Roll Paper Support standalone brackets, and External Serial-to-Ethernet Network Print Servers

Frequently Asked Questions (FAQ)

• Does the Okidata Microline 421 Serial (Black) require ink or laser toner?
  No. This is an impact dot matrix printer. It mechanically drives physical print pins against a fabric ink ribbon to stamp characters directly onto the page, making it completely immune to dried-out ink lines and lowering continuous text costs.
• What do the Serial and (Black) designations mean for this specific model configuration?
  This specialized variant features a built-in RS-232C Serial communication port on the back for integration into legacy terminal hubs, medical testing devices, manufacturing machinery, or older computing environments. The (Black) designation signifies its modern dark outer plastic chassis, designed to match modern components or darker industrial workstations. All internal features and physical performance metrics match the standard model.
• What sizes of forms can this wide carriage model manage?
  The Microline 421 design features a broad 16-inch wide layout (136 columns at 10 cpi), allowing it to comfortably feed broad accounting spreadsheets, daily manufacturing manifests, wide industrial labels, or high-volume data-logging continuous fanfold stocks up to six layers thick.