LED array printhead and method of adjusting light luminance of s

Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light

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Details

347238, 359619, 359620, 427 96, 427162, 427256, 427258, 427261, 4274071, B41J 245, G02B 2700, B05D 506, B05D 136

Patent

active

054754178

ABSTRACT:
An LED array printhead comprises a head substrate which carries an array of semiconductor LED chips and an array of drive IC's in corresponding relation to the LED chips. Each of the LED chips has a plurality of light emitting portions. The printhead further comprises a transparent resin coating for covering at least the LED chip array. The resin coating is provided with at least one convex lens portion at a position corresponding to a selected light emitting portion of the LED whose luminance is lower than a predetermined level.

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Roger Grant and Claire Grant, "Grant & Hackh's Chemical Dictionary", McGraw-Hill, Inc., 1987, p. 503.

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