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print​網穴深度的變化

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-08-25 | 689 Views | 🔊 Click to read aloud ❚❚ | Share:
網點增大和網穴深度的同時變化,其網點增大隨百分率比例遞增

   print網穴深度的變化

例如凹版印刷,可根據印刷網點增大的規律是隨著階調加深,網點增大和網穴深度的同時變化,其網點增大隨百分率比例遞增。

呈直線增大狀態,越往暗調增大越多,越急。而
80%區是一個網點轉折的跳躍區,print80%以上的網點呈直線增大,顏色層次極易並級。

80%以下網點增大比較緩和,一般都能印出層次。因此應把最深的基本色,print如大紅基本原色與處在暗調的網點值在8%85%區域的肉色。

茶色等復色拉開距離,把暗調的肉色降淺到
80%以下,為75%-78%print以避開80%這個網點跳方面這樣可以保證打樣、印刷時印足大紅實地色。

另一方面又可使暗調的肉色茶色等復色既不留紅,又保持層次,取得兩全其美的效果。
處理好小網點跳躍區的色彩。如對於凹版印刷。

根據雕刻滾筒對小網點容易損失和因高光調墨稀而影響
OPP膜打樣和印刷時的小網點轉移性差的規律,print5%以下小點一般機器轉印不出來。

影響高光淺色調的色量不足,並容易與極高光絕網部分並級。因此,print要有意識地把高光調的基本色稍作加深處理,以避開
5%這個網點跳躍區。

print網穴深度的變化
print網穴深度的變化

既保證高光調色彩飽滿,又使高光淺色調不出現硬口、脫節、粗糙之弊病,處理好兩個網點跳躍區的print色彩就可以提高凹印彩色層次版製版質量。


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