Amber & Ruby Mask
Screen Colour System’s Amber and Ruby masking films are environmentally friendly aqueous cutting films. They are formulated for the art and camera departments to produce photo stencil masks and positives either by hand or a plotting (sign cutting machines).
Drafting Film
Drafting Film is a frosted polyester film that is receptive to drawing Inks. You should use the most opaque inks to UV light (Red Oxide). Although the film is frosted it is still easy to register between layers and produce multi coloured film positives. The quality of the stencils will depend on the density of the ink used when drawing.
Laser Film
Laser Screen is a cost effective, frosted polyester film that can printed onto by either a photo-copier or laser printer to make film positives. This film is not recommended for multi-colour designs with tight registration. On the plus side Laser films and cheaper to produce but the problem with this method of positive film production is the heat produced by the printers and distorting the film. The solution, use an Epson Ink Jet Printer see below for more details.
Temporary Support
Temporary support film is a clear polyester backing film. You can then paste pieces of UV opaque material onto it. This will then create a single positive. Also ideal for tiling positives where the printer wants to print multiple images
Ink Jet Films
Dry Film is a clear polyester film that has been treated to accept Grafolac Ink Jet inks & Epson inks to produce solid black opaque film positives. The film is touch dry in seconds and ready for use within minutes. Once dry the film is ready to use and is water resistant. Dry film is recommended for Epson ink jets of all sizes and for all types of positives. Dry film comes in the following sheet and roll sizes. The sheets are packed in boxes of 100 sheets per box. The rolls are all 30 mt. long.
Standard stocked sheet sizes A4, A4+ ,A3, A3+ and A2
Standard stocked roll sizes
17” (43.2 cm), 24” (61 cm), 36” (91.5 cm), 40” (101.5 cm) and 44” (112 cm)
RIP Software
A brief history of film positive production. The positives used to be made from hand cut films, painting opaque colour onto clear plastic and Image setters costing many thousands of pounds. Then came computers, laser and ink jet printers. There have been many attempts to use this technology to produce film positives. The problem has always been the software between the computer and the printer was difficult to use and all software was produced in the production of colours and not solid black's to make film positives. Enter the Accurip software a whole new world for the screen printer.
Here are the pro's and con's of making films with laser and ink jet. Using a laser printer to make film positives is very quick but because the laser process involves heat in the toner setting process multicolored films do register properly.
Ink Jet Printers will produce very accurate films that register. they produce solid black positives from line drawings, but when accurate half tones are required additional software is needed to create the images in dots (half-tones) large enough for screen printers to make a screen. With the software the printer can separate photographic images into 4 colour process positives as well as produce graduating tonal positives. Dot counts (dpi) can be customized as well as the dot shapes. The RIP will also specify where the image is positioned onto the film as well as define where the film is cut.
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