Replaceable thermal print head assembly

Details Replaceable thermal print head assembly Replaceable thermal print head assembly

1988-03-30

1990-01-23

Reynolds, B. A.

Recorders

Thermal recording

400120, 346139R, G01D 510

Patent

active

048961663

ABSTRACT:
A print head assembly includes the feature of snap-in, tool-less replaceability. The print head is intended for an application where extended use is expected and replacement, due to wear, will be necessary by nontechnical users of the printing system. In one embodiment, the print head utilizes two pins which slide into slots formed in the printer body. The print head is free to pivot about the two pins and is urged against a platen by the force of bias springs and a loaded pin. The loaded pin engages with, and forces upwrd on the heat-radiating fins extending from the bottom of the print head. Shelves formed in the printer body cover engage the two pins of the print head and force the print head, against the forces of the bias springs, into a proper alignment position when the cover is closed. This allows firm engagement of the print head with the platen, and proper alignment thereof, without fixing the print head to a mounting structure.

REFERENCES:
patent: 4768041 (1988-08-01), Sato et al.

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