グラビア製版用電析銅めっき皮膜の添加剤濃度による物性と彫刻適性
Physical Properties and Aptitude for Engraving of Electrodeposited Copper Plating Film for Gravure Cylinder by Concentration of Additives

Hideo ABE, Kazuo MATSUNAGA, Tatsuo ITO, Tohru WATANABE
2006 Journal of Printing Science and Technology  
In a previous report, we studied the effect on the physical properties of electrodeposited copper plating film for gravure cylinder by using the commercial additive agents(COSMO G series)and verified the validity of the estimation method for the concentration of hardener. Here results on the continuation of the study for the the physical properties of electrodeposited film and the aptitude for engraving are presented. The Vickers hardness and elongation at high current density are similar with
more » ... he results in a previous report. The concentration of G-1 was estimated using the equation simulated from the multiple regression analysis. The correlation coefficient of the applied and estimated concentration of G-1 is 0.941 when the concentration of G-1 varies from 0.5 to 4 ml/l. The falling speed of tensile strength by acceleration test at 95℃ is about 600 -1, 000 times as fast as that of aging test at 25℃ . It was found that the half-life time of tensile strength by the acceleration test can be estimated this time by aging test. The relationship between the half-life time of tensile strength and the reciprocal of absolute temperature is linear. This suggests that the time of re-crystallization is due to the applied temperature. When the cylinder is electroplated in G-1 concentration 0.5 ml/l and aged at room temperature, the volume of cell( ∠ 0)deviates from that of cylinder which is electroplated in G-1 concentration 1.0 ml/l or above. This is because the Vickers hardness falls whereas the elongation increases by aging and the cell shape consequently deteriorates. 1.緒言 グラビア印刷の起源は古く,1879 年チェコスロバキア のカ−ル・クリッシュにより考案されたとされている 1) が, 電子的に彫刻する方式「ヘリオ・クリショグラフ」により 版を作製し,印刷したのは 1959 年からである 2) .グラビ ア印刷における印刷適性を見ると,インキ転移に及ぼす要 因は色々あるが,特にインキと紙の物理化学的な界面現象 が重要な要因とされている 3) .他に重要なのはセル形状, セル内のインキの形状(ドクターリング後のインキが形成 するメニスカス形状)などである.このように,印刷適性 とセル形状の関連性は大きく,さらに銅めっきの皮膜物性 364 * 2006 年 5 月 12 日受理 ** 凸版印刷(株)総合研究所 生産技術研究所 *** 凸版印刷(株)生産技術センター グラビア製版技術 (〒 345-8508 埼玉県北葛飾郡杉戸町高野台南 4-2-3) **** 芝浦工業大学工学部材料工学科 (〒 135-8548 東京都江東区豊洲 3-7-5)
doi:10.11413/nig.43.364 fatcat:adlewmrc7zczji37kebsa2viym