| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a clear image without color shift and blur by a method wherein lights from different light sources are always imaged on a recording medium in a constant position relationship in terms of an optical print head having a plurality of light sources. SOLUTION: Each of fluorescent light emitting tubes 1, 2 having different light colors has multiple light emitting dots which are arranged perpendicular to the paper surface. A dichroic optical element 10 is provided between the fluorescent light emitting tubes 1, 2. A green color dot light from the first fluorescent light emitting tube 1 is reflected by a reflection face 10a of the dichroic optical element 10 so that the optical passage thereof is changed by 90 degrees to the lower side. A red color dot light from the second fluorescent light bulb 2 is reflected by a reflection face 10b of the dichroic optical element 10 so that the optical passage thereof is changed by 90 degrees to the lower side. The dot lights having different colors from the fluorescent light tubes 1, 2 are incident on a common isometric imaging element 12 such that the optical axes are not conformity with each other but are parallel to each other. The dot lights are imaged in parallel on a recording medium 7 in a predetermined position relationship. The image obtained thereby is clearer than heretofore.</p> |
