Replaced by 6400, 6500 series (oldest to newest)

Model Abstract 6412-A00
The IBM 6412 Model A00 is a 1200 LPM Line Matrix Printer. The printer offers a unique interface structure, selectable from the operator panel, that supports three popular attachment methods. Standard are PC Parallel, Dataproducts Parallel, and RS-232C Serial. In addition, the Model A00 offers two emulation standards, also selectable from the operator panel, IBM Proprinter III XL and Epson FX Graphics. It supports multiple systems environments including IBM mainframe distributed computers, IBM mid-range computers, IBM RS/6000*, PS/2*, IBM-compatible PCs and Local Area Networks (LANs) through the IBM 4033. Available features include Code V-Printronix emulation, and IGP-Printronix emulation.

Model Abstract 6412-CTA
The IBM 6412 Model CTA is a 1200 LPM Line Matrix Printer. The standard interface structure supports coaxial, twinaxial, and ASCII Serial/Parallel system attachments and is operator panel selectable. The IBM 6412 Model CTA is generally compatible with IPDS, SCS, and ASCII models of the IBM 4234 and other predecessor IBM printers. Available features include IBM IPDS, Code V-Printronix emulation, and IGP-Printronix emulation.

Model Abstract 6412-CTO
The IBM 6412 Model CTO is a 1200 LPM Line Matrix Printer. The standard interface structure supports both twinaxial and coaxial system attachments and is operator panel selectable. In addition, the following emulation are supported and selected via the operator panel: Coaxial with IBM Emulation 4234-001 or 3287, and Twinaxial with 4234-002 or 5225-1,2,3,4. This model is generally compatible with SCS, non-IPDS models of the IBM 4234 and other predecessor IBM printers. Available features include Code V-Printronix emulation, and IGP-Printronix emulation.