Moving coil, multiple energy print hammer system including a clo

Details Moving coil, multiple energy print hammer system including a clo Moving coil, multiple energy print hammer system including a clo

1980-10-14

1982-10-12

Coven, Edward M.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Imprint by movement of record-medium against type-face

400166, 361159, B41J 1900

Patent

active

043536565

ABSTRACT:
For use in an electronic printing system having a serial impact printer, apparatus is provided to accurately control the velocity of the print hammer during printing and provide accurately controlled impact energy, which is proportional to the character face area. The apparatus includes a servo feedback system where the primary driver for the print hammer is a moving coil in a magnetic field, and the velocity sensing required for the servo feedback loop is the back emf in the moving coil with the back emf being proportional to the hammer velocity.

REFERENCES:
patent: 3279362 (1966-10-01), Helms
patent: 3628644 (1971-12-01), Cralle et al.
patent: 3678847 (1972-07-01), Pear, Jr. et al.
patent: 3834306 (1974-09-01), Gilbert et al.
patent: 4062285 (1977-12-01), Deetz et al.
patent: 4192230 (1980-03-01), Blom et al.
IBM Tech. Discl. Bulletin, Mills et al., vol. 15, No. 8, 1/73, p. 2356.
IBM Tech. Discl. Bulletin, Kane et al., vol. 22, No. 12, 5/80, p. 5231.
Xerox Discl. Bulletin, Deetz, vol. 22, No. 2, 3/79, p. 153.
IBM Tech. Discl. Bulletin, Mathews, vol. 18, No. 11, 4/76, pp. 3533-3534.

Affiliated with

Also associated with

Rating

Moving coil, multiple energy print hammer system including a clo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Moving coil, multiple energy print hammer system including a clo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moving coil, multiple energy print hammer system including a clo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-221692