Method and apparatus for improved sheet processing

Details Method and apparatus for improved sheet processing Method and apparatus for improved sheet processing

1994-02-17

1995-09-26

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

G06M 700

Patent

active

054540178

ABSTRACT:
A sheet counting apparatus includes a set of rotatably mounted suction spindles mounted for movement past a stack of sheets to be counted. A pump is connected to the spindles whereby a suction spindle passes the stack, a vacuum is supplied to the spindle so that the topmost sheet is deflected from its initial position. A monitoring system monitors the number of deflected sheets by monitoring the degree of vacuum within the suction spindle passing the stack. The monitoring system increments a count on each occasion when the monitored vacuum exceeds a predetermined threshold. The monitoring system terminates the count process when a predetermined period is exceeded without the vacuum exceeding the predetermined threshold, the predetermined period corresponding to the passage of at least two spindles past the stack of sheets, without the spindles deflecting a sheet.

REFERENCES:
patent: 4064391 (1977-12-01), Kokubo et al.
patent: 4385229 (1983-05-01), Middleditch
patent: 4569066 (1986-02-01), Hibari
patent: 4974237 (1990-11-01), Grabowski

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