Fault Detection System for Band Printer Hammer Limit Controls
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
The hammer limit controls of a band printer use a buffer 10 for storing a hammer-on-table (HOT) consisting of data indicative of the number of hammers fired by print controls 11 as determined by compare counter 12 in each of a series of operating subscan intervals. The HOT data stored in buffer 10 is updated with the count in compare counter 12 at the end of each interval and the total table read from buffer 10 and summed by adder 13 for storage in end-of-scan (EOS) sum register 14 and hammer on register 15. In the course of each interval, the updated sum in EOS sum register 14 is increased to a new sum and stored in hammer on register 15 by adder 13 each time a hammer is fired.