Incremental printing of symbolic information – Thermal marking apparatus or processes – Ink cassette or cartridge
Patent
1997-07-11
1999-09-28
Yockey, David F.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Ink cassette or cartridge
400236, B41J 3314
Patent
active
059596520
ABSTRACT:
A thermal ink ribbon cassette for holding an inked ribbon of indefinite length for use in a thermal transfer printing mechanism holds a spool of fresh ink ribbon which passes out of the cassette and across a thermal printing head, and then back into the cassette. The features of construction and arrangement of the cassette are such that the length of the portion of the normal feed path of envelopes through the mailing machine in which the ink ribbon and the envelopes travel coextensively is reduced to an absolute minimum to avoid unnecessary contact after printing take place. A slanted wall is provided for ensuring that the envelopes remain in their normal path of travel regardless of any tendency of the envelope to adhere to the ink ribbon after the point of normal separation, or if they are bulged and tend to jam on internal portions of the mailing machine. A rectangular opening is provided to permit manual access to the interior of the cassette housing so that the broken end of an ink ribbon can be inserted into the housing and reattached to used ribbon accumulated on the take up spool. Also, an improved anti-reverse mechanism has been provided that remains operable to prevent reverse rotation of the take up spool regardless of the physical orientation of the cassette.
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Chaclas Angelo N.
Pitney Bowes Inc.
Scolnick Melvin J.
Vitale Alberta A.
Vo Anh T. N.
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