Patent ID: 6690909
Filing Date: 2004-02-10
Classification: B41J,Y10S

Abstract:
A double-sided printing device for paper handling applied to print data on a sheet having a first and a second side for printing, said printing device comprising:a holding unit applied to store and supply said sheet; a first switch selectively coupling with said holding unit; a drive connected with said first switch for supplying power to said first switch; a printing unit settled on one side of said first switch, said first switch is driven by said drive to provide power to said holding unit to feed said sheet into said printing unit to allow said first side of said sheet to be printed; a turning unit coupled with said first switch possessing an space for the circumrotation of said sheet; and an obstructing unit settled beside said first switch and confining selectively said first switch to couple with said holding unit; wherein said first switch is confined not to couple with said holding unit by said obstructing unit after said printing unit has finished the printing on said first side of said sheet, said sheet is guided by said turning unit into said space for circumrotation to be turned over and then reenters said printing unit for the printing on said second side of said sheet of paper.