Typewriting machines – Means auxiliary to typewriting function – Indicator means
Patent
1992-02-25
1995-01-10
Wiecking, David A.
Typewriting machines
Means auxiliary to typewriting function
Indicator means
101 91, 101232, 271258, B41J 2948
Patent
active
053801091
ABSTRACT:
A mailing machine comprising, structure for feeding a sheet in a path of travel, a fence for defining a direction of the path of travel and against which an edge of a sheet is normally registered for alignment thereof in the path of travel, structure for printing postage indicia on a sheet in the path of travel, the printing structure including a rotary postage indicia printing drum, the printing structure including structure for driving the drum, structure for controlling the sheet feeding and drum driving structure, the controlling structure including a microprocessor, the controlling structure including structure for sensing a sheet in the path of travel and providing a signal to the microprocessor when a sheet is fed into and out of blocking relationship with the sensing structure, the signal having a first magnitude when a sheet is not disposed in blocking relationship with the sensing structure, the signal having a second magnitude when a sheet is disposed in blocking relationship with the sensing structure, the second signal magnitude having a time duration corresponding to an overall length of a sheet as measured in the direction of the path of travel, and the microprocessor programmed for commencing a count when a sheet is fed into blocking relationship with the sensing structure of a predetermined time interval corresponding to a minimum overall sheet length acceptable for printing purposes determining whether the sheet is still in blocking relationship with the sensing structure at the end of the count, and implementing a shut-down routine if the sheet is not in blocking relationship with the sensing structure at the end of the count.
REFERENCES:
patent: 4551813 (1985-11-01), Sanbayoshi et al.
patent: 4646635 (1987-03-01), Salazar et al.
patent: 4809969 (1989-03-01), Bastow et al.
Eckert, Jr. Alton B.
Gallagher Dennis M.
Pfeifer Thomas M.
Schoonmaker Richard P.
Kelley Steven S.
Meyer Robert E.
Pitney Bowes Inc.
Scolnick Melvin J.
Walker Donald P.
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