Dot line printer with mimimum hammer gap arrangement

Details Dot line printer with mimimum hammer gap arrangement Dot line printer with mimimum hammer gap arrangement

1997-11-10

1998-08-04

Yan, Ren

Printing

Selective or progressive

Bed and platen machines

40012428, B41J 900

Patent

active

057878030

ABSTRACT:
In a dot line printer including a cylindrical platen for supporting a print paper and a hammer bank supporting a plurality of print hammers, the hammer bank is a double bank structure in which a first half of the print hammers are attached to the upper bank and the second half of the print hammers are attached to the lower bank. The positions of print pins in adjacent print hammers are shifted an amount corresponding to one dot so that a predetermined dot lines are printable with one scan of the hammer bank. In order to minimize the hammer gaps of the print hammers, the inner surfaces of the hammer banks are oriented in a direction in which those surfaces access to each other.

REFERENCES:
patent: 3311050 (1967-03-01), Schmidt
patent: 3606834 (1971-09-01), Nyman et al.
patent: 4070963 (1978-01-01), Weaver
patent: 4527469 (1985-07-01), Wolf et al.

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