- Rubylith
Rubylith is a brand of
masking film, invented and trademarked by theUlano Corporation . Today the brand has become genericized to the point that it has become synonymous with all coloured masking films.Rubylith consists of two films sandwiched together. The bottom layer is a clear
polyester backing sheet. The top layer is a translucent, red coloured,self adhesive ,emulsion . It is designed to be both easy to cut with a knife and light safe for use withorthochromatic films.Rubylith is used in many areas of
graphic design , typically to produce masks for various printing techniques. For example it is often used to mask off areas of a design when using aphotoresist to produce printing plates foroffset lithography orgravure . It is also frequently used duringscreen-printing .Ulano also produce a yellow coloured, masking film called Amberlith, that is not light safe but easier to use for masking when not employing a photoresist.
The first microprocessor, the
Intel 4004 , was designed by physically cutting sheets of Rubylith into thin strips to lay out the circuits to be printed, a process made virtually obsolete by current computer's graphic design capabilities. [http://news.com.com/Intels+accidental+revolution/2009-1001_3-275806.html]External links
* [http://www.ulano.com/knifecut/masking.htm Official website]
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