Patent ID: 6317581
Filing Date: 2001-11-13
Classification: G03G

Abstract:
A printer or copier device for sheet-type material, comprising:an input section via which the sheet-type material is supplied individually one after another;a first transfer printing transport path;a first electrographic printing unit in said first transfer printing transport path with which a first image pattern is printed on the sheet-type material;an output section via which the sheet-type material that has been printed by said first electrographic printing unit is ejected individually one after another;a second transfer printing transport path to which the sheet-type material is supplied via said input section;a second electrographic printing unit of substantially a same type as said first electrographic printing unit, said second electrographic printing unit being in said second transfer printing transport path and with which a second image pattern is printed on the sheet-type material, said second electrographic printing unit forwarding the sheet-type material printed by said second electrographic printing unit to said output section for output;connecting paths connecting said first and second transfer printing transport paths to form first and second rings, said first ring of said first transfer printing transport path including:a supply channel via which the sheet-type material is supplied to said second transfer printing transport path from said input section;said second ring of said second transfer printing transport path including:a carry-off channel via which the sheet-type material printed by said first electrographic printing unit is supplied to said output section; anda connecting channel connecting said first transfer printing transport path and said second transfer printing transport path with which the sheet-type material is conveyed in one or in both transport directions.