Self-scanning light-emitting device

Details Self-scanning light-emitting device Self-scanning light-emitting device

B - Operations, Transporting

41

J

B41J 2/45 (2006.01)

Patent

CA 2347776

A self-scanning light-emitting device in which the quantity of light can be distributed uniformly in one or more light-emitting chips by correcting the quantity of light of a light-emitting element. The quantity of light of the light-emitting element is corrected by regulating the light-emitting time of the light-emitting element or regulating the voltage of a write signal fed to the light-emitting element. The quality of printing of an optical printer head employing such a self-scanning light-emitting device can be enhanced because the quantity of light can be distributed uniformly.

L'invention concerne un dispositif électroluminescent à auto-balayage dont la quantité de lumière peut être répartie de manière uniforme dans une ou plusieurs puces électroluminescentes par correction de la quantité de lumière d'un élément électroluminescent. On corrige la quantité de lumière de cet élément électroluminescent par régulation du temps d'électroluminescence de l'élément électroluminescent, ou par régulation de la tension d'un signal d'écriture envoyé vers cet élément électroluminescent. La qualité d'impression d'une tête imprimante optique faisant intervenir ce dispositif électroluminescent à auto-balayage peut être améliorée grâce à cette répartition uniforme de la quantité lumière.

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