| 摘要 |
PROBLEM TO BE SOLVED: To provide a print head capable of suppressing a temperature rise due to generation of heat.SOLUTION: A print head includes: a plurality of organic EL array chips 11 each having a plurality of organic EL elements and drive parts; a substrate 13 on which the plurality of organic EL array chips is mounted; an imaging optical system for condensing light emitted from the plurality of organic EL elements on a surface of a photoreceptor drum; and a housing to which the substrate and the imaging optical system is attached. The plurality of organic EL array chips is arranged in staggered arrangement in a direction along a Y-axis. Adjacent two organic EL array chips partially overlap with each other in a position in the direction along the Y-axis. Each of the organic EL array chips, in parts in which the organic EL array chips partially overlap with other organic EL array chips in the positions in the direction along the Y-axis, is mounted on the substrate via a heat radiation pattern 13A. |
