Printing – Selective or progressive – Rotary machines
Patent
1984-10-04
1987-03-03
Pieprz, William
Printing
Selective or progressive
Rotary machines
101233, 318561, 364466, 400322, G06F 1502, B41L 4726, B41K 364
Patent
active
046466355
ABSTRACT:
In printing apparatus including structure for changing a value to be printed and structure for selecting a value to be printed, wherein the former includes a plurality of banks, each of which includes a print wheel having a plurality of print elements, and the latter includes structure for selecting each bank and structure for selecting each print element of a selected bank, and structure for driving the bank and print element selection structure, wherein the driving structure includes an output shaft, and structure for selectively coupling the shaft to the bank and print element selection structure, the improvement for controlling the value selection structure, the improvement comprising: the driving structure including a d.c. motor having the output shaft; structure for sensing angular displacement of the shaft; a microprocessor comprising clock structure for generating successive sampling time periods, structure for providing first counts respectively representative of successive desired angular displacements of the shaft, structure responsive to the sensing structure for providing second counts respectively representative of actual angular displacements of the shaft, and structure for compensating for the difference between the first and second counts during each successive sampling time period and generating a PWM signal causing the actual angular displacement of the shaft to substantially match the desired angular displacement thereof during successive sampling time periods; and signal amplifying structure operably coupling the signal to the motor.
REFERENCES:
patent: 3882773 (1975-05-01), Cook et al.
patent: 4016467 (1977-04-01), Hallenbeck
patent: 4023489 (1977-05-01), Beery
patent: 4133011 (1979-02-01), Kurzweil, Jr.
patent: 4156170 (1979-05-01), Strunc
patent: 4180856 (1979-12-01), Check, Jr. et al.
patent: 4195337 (1980-03-01), Bertrand et al.
patent: 4219766 (1980-08-01), Lin
patent: 4220084 (1980-09-01), Maclean et al.
patent: 4226546 (1980-10-01), Hoffman
patent: 4234830 (1980-11-01), Cannon
patent: 4250544 (1981-02-01), Alley
patent: 4259626 (1981-03-01), Nomura et al.
patent: 4262239 (1981-04-01), Kawa
patent: 4332492 (1982-06-01), Thern
patent: 4334471 (1982-06-01), Noyes et al.
patent: 4340848 (1982-07-01), Hanagata
patent: 4459525 (1984-07-01), Hasegawa
patent: 4459675 (1984-07-01), Bateson et al.
Kirschner Wallace
Salazar Edilberto I.
Pieprz William
Pitchenik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
Walker Donald P.
LandOfFree
Microprocessor controlled D.C. motor for controlling print value does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microprocessor controlled D.C. motor for controlling print value, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microprocessor controlled D.C. motor for controlling print value will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1010620