| 摘要 |
A novel photogravure engraving roll capable of improving plate fog, being provided with a surface reinforcing film layer completely free from toxicity and the possibility of pollution, and being excellent in plate wear; and a production method of the roll. The photogravure engraving roll comprises a metal hollow roll, a copper-plated layer provided on the surface of the hollow roll and formed with many gravure cells on the surface thereof, a metal layer provided on the surface of the copper-plated layer, a metal carbide gradient layer of the metal provided on the surface of the metal layer, and a diamond-like carbon film covering the surface of the metal carbide gradient layer, wherein a pit being smaller than the minimum gravure cell in the highlighted portion of the copper-plated layer and having a size not permitting ink transfer is arranged so that at least one pit exists in the one-pitch area of a screen line in a non-printing image.
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