Methods for measuring laser performance in laser printers

Details Methods for measuring laser performance in laser printers Methods for measuring laser performance in laser printers

1991-08-23

1993-11-30

Grimley, A. T.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

356 72, G01D 942

Patent

active

052669734

ABSTRACT:
A method is disclosed for measuring the performance of individual lasers in a multiple channel laser printer. A laser is first preheated and then a test cycle is begun as follows. The laser is first set to a point just below but substantially equal to its threshold value and then set to a test value by supplying it with a preselected current pulse within its operating range. The power output of the laser is then read a substantial number of times and the average value of the readings of laser power output is recorded. The test cycle is repeated for a substantial number of different test values with respectively different preselected current pulses within the laser's operating range.

REFERENCES:
patent: 4757327 (1988-07-01), Henzi
patent: 5050156 (1991-09-01), Barton

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