From: "A Guide to Surface Characteristics of Kodak Fiber Based Black and White Papers"
This wonderful little book talks about the surfaces of EK Paper and how they were produced.
"The most extreme case of matting agent use was Suede paper. Suede was characterized as a texture but was actually a smooth texture paper with a special matting agent – ground glass – in the emulsion. The ground glass was prepared at Kodak by washing Pyrex glass cutlets in hydrochloric acid to remove iron contamination. The glass was then washed with water and dried in an oven followed by grinding for 48 hours in a ball mill. Iron particles released in the grinding process were removed by passing the ground glass two times over a set of magnets. The ground glass was then classified through a 105 mesh screen in a vibratory shaker. The ground glass that passed through the 105 mesh screen was slurried in water and continuously stirred to prevent settling until drawn down for use."
One learns something every research session, I guess.
Bob
This wonderful little book talks about the surfaces of EK Paper and how they were produced.
"The most extreme case of matting agent use was Suede paper. Suede was characterized as a texture but was actually a smooth texture paper with a special matting agent – ground glass – in the emulsion. The ground glass was prepared at Kodak by washing Pyrex glass cutlets in hydrochloric acid to remove iron contamination. The glass was then washed with water and dried in an oven followed by grinding for 48 hours in a ball mill. Iron particles released in the grinding process were removed by passing the ground glass two times over a set of magnets. The ground glass was then classified through a 105 mesh screen in a vibratory shaker. The ground glass that passed through the 105 mesh screen was slurried in water and continuously stirred to prevent settling until drawn down for use."
One learns something every research session, I guess.
Bob