MICROCOMPUTER CONTROL OF RIBBON DRIVE FOR PRINTERS

摘要

A microcomputer controls a ribbon drive assembly in a high speed wire matrix printer to eliminate ribbon slack, to insure proper ribbon positioning and to conduct diagnostics in conjunction with turning on the printer such as start-up time each day and after replacement of the ribbon with a new ribbon, the diagnostics checking to be sure that a ribbon is actually in the proper position, that it is threaded across the print line and also checking for proper operation of the ribbon drive, logic, and electronics. Tests are also made for proper ribbon drive during normal ribbon feeding operations. BC9-79-025