ruby lith????
On 10/8/2009 2:36 PM laran spake thus:
What is ruby lith? I need to find a source and don't even know what it is (using as my red filter for my enlarger - possibly) Rubylith (one word) was (and still is, if it's still available) a trade name for transparent red masking film used in the graphic arts (notably in the making up of flats for offset printing, known as "stripping") as a photo-opaque film (orthochromatic photosensitive materials like offset printing plates are insensitive to red light). Cut-out areas in printing flat could be covered with Rubylith to eliminate printing marks on the plate caused by light exposure. From the Madison Avenue-ese "ruby" (meaning "red") + "lith" (as in offset lithography). -- Found--the gene that causes belief in genetic determinism |
ruby lith????
On 10/8/2009 3:54 PM David Nebenzahl spake thus:
On 10/8/2009 2:36 PM laran spake thus: What is ruby lith? I need to find a source and don't even know what it is (using as my red filter for my enlarger - possibly) Rubylith (one word) was (and still is, if it's still available) a trade name for transparent red masking film used in the graphic arts [...] Yep, it's still available: f'rinstance, http://www.hyatts.com/sign/ulano-rub...15x50yd-T36645 (a little pricey at this site--$213 for a 50 yard roll. Might want to shop around a little ...) -- Found--the gene that causes belief in genetic determinism |
All times are GMT +1. The time now is 03:11 AM. |
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
PhotoBanter.com