Dot printer with age compensation means

Details Dot printer with age compensation means Dot printer with age compensation means

1987-09-21

1989-01-17

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

400 53, G01D 1500

Patent

active

047990716

ABSTRACT:
A dot printer apparatus having a recording head with a plurality of recording elements such as LED's, etc. Counting means is provided to count the number of prior activations of each recording element during a past production run. In one embodiment, the recording elements are enabled during a nonproduction run to age those recording elements to compensate for their relative lack of use during the last production run. In another embodiment, age compensation is provided during the next production run with the on-times to the recording elements adjusted in accordance with correction signals related to the counting of prior activations of each of the recording elements during the last production run.

REFERENCES:
patent: 4536778 (1985-08-01), Schamphelaere

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