Device for indicating waveform position of a dot array recorder

Details Device for indicating waveform position of a dot array recorder Device for indicating waveform position of a dot array recorder

1987-05-12

1988-05-31

Sewell, Paul T.

Recorders

Combined with non-recording indicator or alarm

346 35, 400120, 400709, 400711, G01D 900, B41J 2942

Patent

active

047484543

ABSTRACT:
The present invention relates to a dot array recorder having a dot array head carrying an array of the dot printing elements arranged in a plurality of groups, and for effecting dot printing at positions corresponding to the levels of an input print signal. The dot array recorder also includes an LED array having a plurality of LEDs arranged at positions corresponding to the groups of the dot printing elements, wherein the LED belonging to the group of dot printing elements having the element corresponding to the level of an input print signal, illuminates. Marks are provided on the LED array surface at positions between pairs of LEDs on both sides of a reference line and other graduation lines.

REFERENCES:
patent: 3795863 (1974-03-01), Umeda
patent: 3914758 (1975-10-01), Ingle
patent: 4039956 (1977-08-01), Shimanek
patent: 4155084 (1979-05-01), Klees
patent: 4237457 (1980-12-01), Houldsworth
patent: 4318152 (1982-03-01), Weber
patent: 4649399 (1987-03-01), Kimura

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