Typewriting machines – Including selection of type-face by... – Including error detection
Patent
1992-11-18
1995-07-18
Wiecking, David A.
Typewriting machines
Including selection of type-face by...
Including error detection
101 91, 36446402, B41L 4746
Patent
active
054335370
ABSTRACT:
In a machine including structure for energizing the machine, structure for printing indicia on a sheet, and structure for feeding the sheet in a path of travel to the printing structure, apparatus for automatically testing the machine in response to energization thereof, the apparatus comprising, structure for controlling the machine, the controlling structure including structure for energizing the machine, the controlling structure including a microprocessor, the microprocessor programmed for operating the sheet feeding structure and for operating the printing structure, the controlling structure including a random access memory (RAM) and a non-volatile memory (NVM) respectively connected to the microprocessor, a plurality of sensors respectively connected to the microprocessor for sensing actual movements of the sheet feeding and printing structure and of a sheet in the path of travel and providing respective voltage signals to the microprocessor, and the microprocessor programmed for automatically storing data in both the RAM and NVM corresponding to at least one condition of at least one of the sensors in response to energization of the machine if the condition of the at least one of the sensors corresponds to a malfunction condition thereof.
REFERENCES:
patent: 4421023 (1983-12-01), Kittredge
patent: 4631681 (1986-12-01), Salazar et al.
Gallagher Dennis M.
Pfeifer Thomas M.
Schoonmaker Richard P.
Kelley Steven S.
Pitchenik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
Shapiro Steven J.
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