IMAGE FORMATION DEVICE AND EXPOSURE DEVICE

摘要

PROBLEM TO BE SOLVED: To carry out the alignment of light emitting elements between mutual exposure devices with high accuracy.

SOLUTION: Two or more LED print heads (LPH) 33 are provided which are arranged corresponding to two or more photosensitive material drums 31 and in which LED arrays 63 for exposing the photosensitive material drum 31 are arranged on LED circuit boards 62. A predetermined LPH 33 among two or more LPH 33 is equipped with a tabular heater 65 for heating the board. Other LPH 33 except the predetermined LPH 33 is not equipped with the tabular heater 65.

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