US 6,669,613 B1 · Printing roller having printing sleeve mounted thereon roller

Abstract

A printing roller system includes a hollow, cylindrical mandrel which is closed at opposite ends thereof, with an air inlet in one end and a radial bore extending through the mandrel; journal members rotatably holding the mandrel; a resilient and compressible covering layer fixedly mounted on the mandrel and including a cut-away groove in fluid communication with the radial bore; an inelastic printing sleeve removably mounted on the covering layer; and a pressurized air supply connected with the air inlet for supplying the pressurized air to an interior of the mandrel and out through the radial bore and the cut-away groove to a position between at least a portion of the sleeve and the covering layer in order to compress the covering layer and permit mounting of the sleeve on the covering layer and dismounting of the sleeve from the covering layer.

Claims17

Dependent claims

A roller system comprising:

a cylindrical member;
a covering layer fixedly mounted on said cylindrical member, said covering layer being resilient and compressible;
a sleeve made of a non-expandable material and removably mounted on said covering layer;
and
an arrangement for supplying a pressurized gas between said covering layer and said sleeve in order to compress said covering layer and permit mounting of said sleeve on said covering layer and dismounting of said sleeve from said covering layer.

2 more elements

A method of mounting a non-compressible sleeve on a resilient and compressible covering layer of a roller and dismounting said sleeve from said covering layer of said roller, said method comprising the steps of:

supplying a pressurized gas to a position between at least a portion of said sleeve and said covering layer;
compressing said resilient and compressible covering layer with said pressurized gas to an outer diameter slightly smaller than an inner diameter of said sleeve;
axially moving said sleeve over the compressed covering layer when mounting said sleeve on the covering layer;
stopping the supply of said pressurized gas from said position between at least a portion of said sleeve and said covering layer such that said covering layer expands to form an interference fit between the sleeve and said covering layer;
and
axially moving said sleeve from the compressed covering layer when removing said sleeve from the covering layer after said covering layer has been compressed.

3 more elements

Dependencies are inferred from the claim text.

Printing roller having printing sleeve mounted thereon roller

Life of this patent

Printing roller having printing sleeve mounted thereon roller

Life of this patent

Abstract

Claims17