PRINTING APPARATUS UTILIZING FLEXIBLE METAL SLEEVES

摘要

Printing of the type utilizing flexible readily collapsible, imperforate thin metal sleeves wherein the sleeves are mounted in a device which maintains their cylindrical configuration rigidified by introduction of fluid under pressure interior of the sleeve during use. A method of mounting the sleeve and several structures for suppprting the sleeves are described. These include the provision of means in the printing press cooperating with the sleeve for maintaining its interior pressure and for stopping the press if the pressure should drop below a predetermined value.