| 摘要 |
PURPOSE:To uniformize the quantity of light emitted from all of LED elements in an LED device used in an LED printer and having a large number of LED elements arranged therein in a row. CONSTITUTION:A power supply line pattern 2 for supplying power to the driving IC 9a, 9b... arranged corresponding to LED chips 8a, 8b... are provide and has a folded-back part 2b. By this constitution, power can be supplied to the respective LED chips 8a, 8b... in the direction opposite to a negative voltage supply line pattern 7 and voltage can be uniformly applied to all of LED elements. |
