Method of insuring print quality of a thermal printer

Details Method of insuring print quality of a thermal printer Method of insuring print quality of a thermal printer

1994-05-09

1999-08-03

Tran, Huan

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

B41J 236

Patent

active

059331798

ABSTRACT:
A method of selectively setting the print cycle speed of a thermal printing apparatus such as a thermal postage meter. The thermal postage meter has a thermal print head and an optical reader under the control of a micro controller for printing an image on a sheet like material comprising the steps of first causing said micro processor to be programmed to first cause said thermal print head to print a test pattern just prior to print said image. The optical reader reads said the pattern intensity. The microprocessor is programmed to select a print cycle speed as a function of the test pattern intensity.

REFERENCES:
patent: 4827279 (1989-05-01), Lubinsky et al.
patent: 4843409 (1989-06-01), Matsuzaki
patent: 4939581 (1990-07-01), Shalit

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