Method of increasing the grayscale resolution of a non-impact le

Details Method of increasing the grayscale resolution of a non-impact le Method of increasing the grayscale resolution of a non-impact le

1990-06-18

1992-04-14

Fuller, Benjamin R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346107R, 358298, G01D 900, G01D 942, H04N 123

Patent

active

051052024

ABSTRACT:
A method of improving the grayscale resolution of a bi-level, light emitting diode type page printer includes increasing the frequency at which printing data is entered into an LED head and correspondingly increasing the frequency at which the LEDs are actuated. The rate at which an image drum is moved past the LEDs is decreased and the feed rate of paper flowing through the printer is correspondingly decreased. The duration of each actuation of the LEDs is decreased to produce dots on the image drum and on the paper which are of a small size.

REFERENCES:
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patent: 4775896 (1988-10-01), Umeda et al.
patent: 4839671 (1989-06-01), Theodoulou et al.
patent: 4856920 (1989-08-01), Sanders, Jr.
patent: 4896168 (1990-01-01), Newman et al.

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