Tandem station dot matrix printer

Details Tandem station dot matrix printer Tandem station dot matrix printer

1989-07-24

1991-05-07

Burr, Edgar S.

Typewriting machines

Including plural, independently supported key-boards,...

400185, 400323, B41J 354

Patent

active

050131680

ABSTRACT:
A dot matrix printer has two print head carriages, supported in parallel, and two print heads for printing a receipt and a journal in a tandem printing station arrangement. A drive cam with a rail on the periphery thereof is coupled to both carriages to drive the carriages in opposite directions upon rotation of the drive cam. The movement of one carriage acts as a balance to movement of the other carriage and thereby eliminates or substantially reduces vibration during printing operation.

REFERENCES:
patent: 4030590 (1977-06-01), Wojdyla
patent: 4194847 (1980-03-01), Grey
patent: 4204779 (1980-05-01), Lee et al.
patent: 4576490 (1986-03-01), Isobe
patent: 4692041 (1987-09-01), Dyma et al.

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