Disabling a mailing machine when a print head is not installed

Details Disabling a mailing machine when a print head is not installed Disabling a mailing machine when a print head is not installed

1997-05-29

1999-09-21

Le, N.

Incremental printing of symbolic information

Ink jet

Combined

347 19, B41J 300, B41J 29393

Patent

active

059560517

ABSTRACT:
Mailing machine including a controller, a printer module including a connector, a print head controller for producing print data signals necessary to print a postal indicia on an envelope and a replaceable print head cartridge having a plurality of print elements which are selectively energizable in response to the print data signals. The print head cartridge is detachably mounted to the connector. The controller in operative communication with the printer module for: determining if a valid print head cartridge is installed; and if a valid print head cartridge is not installed, preventing the print data signals from reaching the connector.

REFERENCES:
patent: 5638097 (1997-06-01), Takayanagi et al.
patent: 5699091 (1997-12-01), Bullock et al.

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