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深圳印刷廠經驗法調色的基本操作

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-12 | 542 Views | 🔊 Click to read aloud ❚❚ | Share:
​(1)去墨皮由於油墨露在空氣中會氧化結膜,因此,取墨前首先要用墨刀沿墨盒四周切開墨皮,以扇形運動軌跡取出錶面結膜的墨皮,將墨皮放於盛裝廢墨的回收桶中
(2)取墨取墨時也以扇形運動的軌跡,將墨盒中的油墨取出放到調墨台或玻璃片上,要註意的是:不能以挖洞的方式取墨,否則會增加墨層與空氣接觸的面積,增大結膜量而導致浪費,如圖5-8所示。取墨後要將墨盒裡的墨層抹平,扣緊盒蓋,存放即可
(3)稱量
深圳印刷廠經驗法調色的基本操作

印刷廠經驗調色的基本操作有:
去墨皮、取墨、稱量、勻墨、捻樣、辨色、測量驗證

深圳印刷廠

(1)去墨皮由於油墨露在空氣中會氧化結膜,因此,取墨前首先要用墨刀沿墨盒四周切開墨皮,以扇形運動軌跡取出錶面結膜的墨皮,將墨皮放於盛裝廢墨的回收桶中

(2)取墨取墨時也以扇形運動的軌跡,將墨盒中的油墨取出放到調墨台或玻璃片上,要註意的是:不能以挖洞的方式取墨,否則會增加墨層與空氣接觸的面積,增大結膜量而導致浪費,如圖5-8所示。取墨後要將墨盒裡的墨層抹平,扣緊盒蓋,存放即可

(3)稱量:

①在稱量之前,對天平進行歸零處理

②稱取玻璃片的重量並記下數據

③再次歸零天平後取出玻璃片,添加第一種色墨至玻璃片上(註意:取墨時按量從大至小的順序依序取墨放到玻璃片上,取完墨後要抹平墨層錶面)。

④再次將玻璃片放置天平內進行稱重,並記下數據。後續添加第二種、第三種、第四種色墨時重復第3步即可。在取墨時一般不超過四種,否則調出的專色飽和度不夠,明度也會降低。(4)勻墨用墨刀將參與混色的色墨混合均勻。在獲取調色配比時,一般用小墨刀在玻璃片或
調墨板上進行勻墨,註意墨刀的運動軌跡,具體操作手法請看微課視頻

(5)捻樣將調勻的色墨,模擬印刷機墨層厚度,打出色樣。一般採用擠壓捻樣法和斜擦式捻樣法打樣,具體操作手法請見微課視頻。

(6)辨色將捻出的色樣與標準色樣(客戶提供的)一並放置於標準比色燈箱內進行觀察對比(標準光源D50或D65照射)

(7)測量驗證在人眼辨色感覺不出明顯差異的情況下,再用密度計測量捻出的色樣與標準色樣的色差,以驗證色差是否符合要求

更多關於調色的知識,
點擊【深圳印刷廠】首頁咨詢客服。

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