(57) A mailing machine base comprising, structure for feeding a sheet having a leading
edge and a trailing edge in a path of travel, the sheet feeding structure including
a roller, the sheet feeding structure including structure for driving the roller at
a desired sheet feeding speed corresponding to a desired reference voltage, structure
for controlling the sheet feeding structure, the controlling structure including a
microprocessor connected to the roller driving structure, the controlling structure
including structure for sequentially sensing the leading and trailing edges of the
sheet in the path of travel and providing corresponding successive signals to the
microprocessor, the sheet having a predetermined length from the leading edge to the
trailing edge thereof; and the microprocessor programmed for providing a predetermined
reference voltage corresponding to the desired sheet feeding speed, counting a time
interval in response to receiving the successive leading and trailing edge signals,
determining whether the counted time interval and the desired time interval are substantially
equal, and storing the predetermined reference voltage as the desired reference voltage
if the counted and desired time intervals are substantially equal.
The mailing machine base may also comprise a postage meter mounted on the base, the
postage meter including a rotary postage indicia printing drum, the base including
structure for driving the drum at a desired constant indicia printing speed corresponding
to a desired reference voltage, the base including structure for controlling the postage
printing drum, the controlling structure including a microprocessor connected to the
drum driving structure, the controlling structure including structure for sequentially
sensing a commencement and a completion of constant printing speed of the drum and
providing corresponding successive signals to the microprocessor, the microprocessor
programmed for providing a predetermined reference voltage corresponding to the desired
drum printing speed, counting a time interval in response to receiving the successive
constant speed commencement and completion signals, determining whether the counted
time interval and the desired time interval are substantially equal, and storing the
predetermined reference voltage as the desired reference voltage if the counted and
desired time intervals are substantially equal.
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