Printing – Selective or progressive – Bed and platen machines
Patent
1984-06-29
1986-04-01
Pearson, Charles A.
Printing
Selective or progressive
Bed and platen machines
400146, B41J 120
Patent
active
045790558
ABSTRACT:
A printer of the type including a platen, a bank of hammers extending in a straight line along and spaced from the platen and a continuous metal band of magnetizable material on which are mounted a plurality of print elements is provided with drive means for moving the band between the platen and the hammer bank and control means for controlling the movement of the band so that the print elements on the band move along the line of hammers. The band drive means includes a drive wheel located near one end of the hammer bank and means for forcing the band into close contact with the peripheral surface of the drive wheel. The means for forcing the band into close contact with the peripheral surface of the drive wheel can be a permanent magnet member located on the surface of the drive wheel. The band movement control means includes guide means for guiding the band so that it extends along the hammer bank and permanent magnet means adapted to force the band into close contact with the guide means. The guide means can be a fixed guide member located near the end of the hammer bank remote from the drive wheel and the permanent magnet means can be a permanent magnet member located on the surface of the guide member and adapted to attract the band to the guide member.
REFERENCES:
patent: 3283711 (1966-11-01), Lew
patent: 3379125 (1968-04-01), Antonucci
patent: 3435756 (1969-04-01), Martin
patent: 3766852 (1973-10-01), De Puy et al.
patent: 3845711 (1974-11-01), Helms
patent: 4428285 (1984-01-01), Cole et al.
IBM Technical Disclosure Bulletin, vol. 23, No. 6, Nov. 1980, pp. 2430-2431, "Magnetic Print Belt Drive Mechanism", by Keplar et al.
Machinery's Handbook: Industrial Press, NY, NY 1978, by Oberg et al., p. 2229.
Coffman E. R.
IBM Corporation
Pearson Charles A.
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