Patent ID: 6640705
Filing Date: 2003-11-04
Classification: B41F,B41N

Abstract:
A rotary printing machine comprising a plate cylinder, a transfer cylinder, and an impression cylinder, said transfer cylinder being arranged between said plate cylinder and said impression cylinder for transferring an image to a web passing between said transfer-cylinder and said impression cylinder, a supporting sleeve inserted on said transfer cylinder, a multilayer rubber blanket arranged on said supporting sleeve, a highly thermally conductive layer fixedly arranged on an outer circumferential surface of said supporting sleeve, said highly thermally conductive layer comprising a material having a thermal conductivity (a) substantially higher than a thermal conductivity of steel so that locally developed heat on said rubber blanket is conducted and thereby distributed by said highly thermally conductive layer along a circumferential surface of the transfer cylinder, said transfer cylinder further comprising blow holes penetrating an outer surface of said transfer cylinder, said supporting sleeve being expandable by compressed air supplied through said blow holes for facilitating insertion of said supporting sleeve on said transfer cylinder and removal of said supporting sleeve from said transfer cylinder, and a thermally insulating layer arranged between said transfer cylinder and said supporting sleeve.