| 摘要 |
PROBLEM TO BE SOLVED: To restrain fluctuation of a membrane thickness of an organic light-emitting layer by severely controlling ink solid contents in a manufacturing method for an organic electroluminescent element for forming an organic light-emitting layer by using a relief printing method for printing while an organic light-emitting material ink is moved from an ink supply means to a printing form to the printing form, and further, from the printing form to a substrate in sequence. SOLUTION: The ink supply means to the printing form is provided with an anilox roll, and an ink reservoir section wherein a part of the anilox roll is formed to be soaked in the organic light-emitting material ink. The anilox roll is arranged to rotate by keeping in contact with the printing form installed on a printing drum, ink supply from the anilox roll to the printing form and ink transfer from the printing form to the substrate are carried out while the printing drum is rotated once at the time of printing, the ink in the ink reservoir section is always circulated through a closed system between the ink reservoir section and an externally-installed ink tank, and an ink churning function is provided in the ink tank. COPYRIGHT: (C)2009,JPO&INPIT
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