Les insoumises folder

網版印刷 / Screen Printing

該印刷樣本是法國有線電視Canal+頻道為以反對向婦女施暴為主題的紀錄片《les insoumises》的播放而製作的印刷宣傳品文件夾。封面使用雙色網版印刷於350g黑色Matter,內頁是使用雙色膠版印刷於135g白色Matter上。該樣品由法國Imprimerie du Marais公司印刷。

The printed sample is press folder from French Cable company CANAL+, for the launch of the documentary ”Les insoumises” about violence against women.The cover is screen printed in red and white on Curious Matter Black Truffle 380g. The inside pages are offset printed in 2 colours on Curious Matter Goya White 135g. The sample was printed by Imprimerie du Marais in France.

 

建議事項
網版印刷,又稱絹印或絲印,是採用尼龍網布、鋼絲網布等材質經張網固定於網框上。待印材料置於框架上方,採用刮刀使油墨強制通過網孔,透過細孔印製於其下的材料上。

  • 考慮油墨與紙張產生的反應,以及套印時希望呈現的效果。
  • 油墨的種類選擇很廣泛:紙張油墨、乙烯基(PVC)油墨和UV油墨。
  • 可能的印刷效果包括:霧面或亮光、金屬油墨、光油、浮雕光油、磷光墨(夜光墨水)、白墨、螢光油墨。
  • 可以印刷比紙張顏色更淺的圖像,例如在黑紙上印白墨。當要求油墨透明度時,乙烯基(PVC)油墨能提供很好的效果。
  • 在Curious Touch, Crious Cosmic, SKIN上最好使用UV印刷,傳統採用的PVC油墨網版印刷與乾燥爐組合使用也適合。
  • 可以在對裱紙板上使用網印。網版印刷機可以印1.5mm厚的材料。
  • 在打樣時先進行疊印測試,因套色時不像其他印刷技術那樣精細。

注意事項

  • 網版印刷與其他印刷形式不同的是,它是採用純含顏料的油墨壓印,所形成的色彩強烈。安迪・沃荷於1962年特別選擇了該項技術,透過生動的顏色描繪瑪麗蓮・夢露。
  • 不可網印複雜的4色圖片。網印每次只能印一個顏色,所以每種顏色設計都必須採用單獨的線網。
  • 當需要細節呈現精緻時,請不要選擇紋理紙,對於精確的落墨,需要絲網與基材緊密接觸,若採用紋理紙接觸會受到影響。
  • 設計作品時,不可忽略印刷時可能會面臨的技術限制。清晰輪廓和粗線效果會更佳。網印允許最小的細節是0.3pt。
  • 根據測試,請不要在磅數低的紙上壓印,可能會導致紙變形或皺摺。

 

DOs
Screen printing also called serigraphy or silk screening, is a method of printing using a stencil supported on a fine woven screen mesh stretched taught and bonded to a frame.
The material to be printed is placed beneath the frame and the fluid ink forced down through the porous material by means of a “squeegee”, reproducing the image not blocked out by the stencil.

  • Do choose your inks carefully, accounting for how they will react with your paper stock, and how you want your inks to look when overprinting. A wide variety of inks can be used: paper and board inks, vinyl inks and UV inks. Possible effects include a matt or gloss finish, metallic inks, varnish, relief varnish, phosphorescent inks, white inks, and fluorescent inks.
  • Do proceed to print an image lighter than the paper colour, for instance, white ink on black paper, Vinyl inks especially will give good results when ink opacity is required.
  • Do consider UV screen printing for papers such as Curious Touch, Curious Cosmic or SKIN.Conventional screen printing with vinyl inks combined with a drying oven is also suitable.
  • Do trust your printer.Screen printing involves a manual process and relies on the expertise of the printer, who will know how best to reveal an image using the right combination of pressure, inks, meshes etc.Screen printers are as much artists as experts.
  • Do silkscreen duplexed boards.Silkscreen presses can print substrates up to 1.5 cm.

DON’Ts
Unlike other forms of printing, screen printing uses pure, pigmented inks, which sit on the surface of the paper, resulting in intense and vibrant colours, Andy Warhol, in particular, chose this technique in 1962 to depict Marilyn Monroe using vivid colours.

  • DON’T screen print complex 4-colour images.The screen printing process prints one spot colour at a time, so a separate screen must be used to produce each colour of the design.
  • DON’T forget trapping during prepress.Indeed, registration is not hairline, like in other processes.
  • DON’T choose a textured paper when precise detail rendering is required.For accurate ink placement, the screen requires intimate contact with the substrate, which will be compromised when printing over a textured paper. If necessary, you could remove the textured from the image by debasing it beforehand.
  • DON’T overlook the technical restrictions that you will face in production when designing your artwork.Clear shapes and thick lines will work better.Depending on your printer and their process, the density of the mesh can allow details down to 0.3 pts.
  • DON’T print lightweight papers without a test, as the ink could cause them to buckle or warp.

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