Segmented drum bar helix printer

Details Segmented drum bar helix printer Segmented drum bar helix printer

1979-09-28

1981-06-16

Sewell, Paul T.

Printing

Selective or progressive

Bed and platen machines

400121, 346101, B41J 308

Patent

active

042730406

ABSTRACT:
Disclosed is an improved form of a mosaic printer of the bar helix type. The helical raised threads on the printer drum instead of being continuous are broken into segments which are offset axially on the drum. This produces a significant increase in throughput by reducing waiting time for the drum to rotate a section of continuous thread into alignment with a hammer at the start of a new helical pattern.

REFERENCES:
patent: 2666807 (1954-01-01), Hunt
patent: 3128693 (1964-04-01), Thiemann
patent: 3286625 (1966-11-01), Petit
patent: 3409904 (1968-11-01), Maiershofer
patent: 3678847 (1972-07-01), Pear et al.
patent: 3810195 (1974-05-01), Kilroy et al.
patent: 3812495 (1974-05-01), Venker
patent: 3843955 (1974-10-01), Pear

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