Try Armex cleaning & coating removal systems. ARMEX Blast Media are
formulated sodium bicarbonate abrasives manufactured by Chruch &
Dwight Co. Inc. makers of ARM & HAMMER products. 1-800-221-0453
They are located at 1891 Grand Avenue, Baldwin, NY 11510.
516-867-8056. I am not sure, but they may have used baking soda for
printer's cylinder cleaning...
Please note that the above is provided for your information only. The
Environmental Protection Agency does not endorse or recommend any
specific vendor, nor is the Agency offering an official opinion concerning
any firms' technology.