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深圳印刷公司經驗法調配專色油墨註意事項

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-12 | 484 Views | 🔊 Click to read aloud ❚❚ | Share:
①調配專色油墨時,盡可能選用同一廠家系列和同一個批號的油墨。​②打樣紙與印刷用紙及客戶標準樣紙相同。​③按比例大小的順序取墨放於調墨台或玻璃片上進行勻墨......
深圳印刷公司經驗法調配專色油墨註意事項

①調配專色油墨時,盡可能選用同一廠家系列和同一個批號的油墨。

②打樣紙與印刷用紙及客戶標準樣紙相同。

③按比例大小的順序取墨放於調墨台或玻璃片上進行勻墨

深圳印刷公司

④用最少種類的原色墨參與調配,所獲得的專色飽和度最高,也最明亮

⑤善用補色墨糾正色偏,如調出的色墨偏藍,則可加適量黃墨吸收

⑥新調出的色墨稍深於標準色樣。

⑦兼顧印後,如印後上光,則選一般油墨即可,因選耐磨性好的油墨成本高,還影響上光效果。標準色樣如有覆膜、上油、壓光等工藝,則在調配出來的色樣上還需要貼透明膠膜後再對比分析。

⑧要清楚油墨的色相特徵給調色帶來的影響:用帶紅相的青墨與帶紅相的黃墨調配出的綠色會發暗,如深藍和深黃都是帶紅相的,二者混色時相當於增加了綠色的補色品紅色,產生了一定量的黑,不利於調出高質量的綠色。而用天藍(孔雀藍)+淡黃(偏青)則可調出明亮綠色。又如調配橘紅色時,盡量用金紅油墨,因為金紅油墨的色相泛黃光,可增加油墨的鮮艷度。再如黑墨偏黃,可加入微量的射光藍,提高黑度,因為射光藍偏藍,可吸收黃光。

⑨選密度相近的油墨易混合,如果密度相差太大,印刷時會產生浮色等弊病。如鉛鉻黃與孔雀藍調配的綠色墨,易分層,印刷時浮色。但選用有機顏料的黃墨,則可避免。

⑩要善於利用密度計測出的顏色差值來判斷增加或減少原色墨。
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