Recorders – Record receivers and/or driving means therefor – Web
Patent
1982-03-03
1984-01-10
Griffin, Donald A.
Recorders
Record receivers and/or driving means therefor
Web
318603, G01D 1524, G05B 1929
Patent
active
044255713
ABSTRACT:
An improvement to a chart recorder where the chart paper is driven by a motor responsive to pulses counted by a microprocessor makes it possible for the operator to set the pen to a major grid line on the chart at any time after initialization by merely pressing a key. Using a programmed counter the microprocessor keeps track constantly of how many counts the paper has advanced and how far it is to the next major grid line. Upon key command the microprocessor through a software routine advances the paper to the next major grid line. If desired, the routine can also be programmed to raise the pen during advance and lower it at the major grid line.
REFERENCES:
patent: 3492553 (1970-01-01), Gordon et al.
patent: 4038664 (1977-07-01), Muir
patent: 4283732 (1981-08-01), Akitomo et al.
patent: 4356439 (1982-10-01), Mott et al.
Mueller William C.
Plunkett Larry
Griffin Donald A.
Grimes E. T.
Hays R. A.
Masselle F. L.
The Perkin-Elmer Corporation
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