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Hi Everyone,
I just wanted to chime in on this. I agree with Stan.
The good quality inkjet film for screen printing will have a coating on the print side. You can tell which side is the side the ink should land on by wetting the tip of your finger and touching a non-crucial part of the film
(usually one of the corners). The print side will stick to your finger when it is wet. That is how I gauge which side it the print side when I don’t have the packaging or I get confused about which side is the print side.
I recommend waterproof screen print inkjet film as well for photoresist. It holds on to the ink well and will give crisp and smooth prints.
-Mike
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
Sent: Tuesday, September 01, 2015 9:47 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Nice Inkjet Film for the DIY Photoresist Crowd
I came across an inkjet film on Ebay intended for making dye separations for silk screen processes. Since the cost of these films was much less than inkjet transparencies designed for office applications (e.g. overhead projection, et. al) I decided to purchase a pack of 50. The results were spectacular. The ink embeds itself into the film (both sides are smooth, unlike standard inkjet film which prints on the rough side). For all intents, and purposes, the artwork is as solid and almost as opaque as a film from an imagesetter.
If you do photoresist as your pcb fab. technique, you might want to try this stuff. It's Fixxons Waterproof Silk Screen Positive Film. I don't own or work for the company. Tip..make sure to save the package or you wont know which side is the print side, since both sides look identical. The product lists only Epson/Canon/HP printers as compatible.