Textiles: fiber preparation
Patent
1976-01-20
1977-07-05
Fisher, J. Reed
Textiles: fiber preparation
101 9305, B41J 304
Patent
active
040334449
ABSTRACT:
A system for shifting the pins of a nine pin printing matrix printer so that the wear on the most used pin combination is distributed over the various pins in the rows and columns of pins. In the present matrix printer, the print head utilizes seven of the nine available pins for printing the character font and distributes the pin wear by causing the seven pins to be energized in a four shift pin combination; utilizing pins one through seven, then pins two through eight then, pins three through nine and then, pins two through eight. The shifting can be set to occur at the end of a sheet, page or job run. The system can be "locked up" so as to repeat one or all of the pins or to delete the use of some of the pins in the case of one or more pin failures.
REFERENCES:
patent: 2943564 (1960-07-01), Demer
patent: 3814227 (1974-06-01), Hurd
patent: 3893715 (1975-07-01), Haak
patent: 3942620 (1976-03-01), Dillinger et al.
Burroughs Corporation
Feeney, Jr. Edward J.
Fisher J. Reed
Fissell, Jr. Carl
Peterson Kevin R.
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