Patent ID: 7486421

Claim:
A media transfer mechanism, applicable to scanners and printers, for transferring media along a loop transferring path consisting of a media-feeding path and a turnover path, said media-feeding path and said turnover path being connected to each other and jointly forming a loop, and processing said media having a first side and a second side, comprising: at least a pickup roller in said media-feeding path configured to pick up said media; at least a feeding roller disposed in said loop transferring path where said media-feeding path is connected to said turnover path, wherein said feeding roller rotates in a first direction so as to feed said media from said media-feeding path to said scanners and printers, so that a first side of said media is processed by said scanners and printers, and, after said first side is processed, said feeding roller rotates in a second direction opposite to said first direction so as to withdraw said media from said scanners and printers and feed said media to said turnover path; and a block member, mounted between said pickup roller and said feeding roller, and below said feeding roller, for guiding said media withdrawn from said scanners and printers to said turnover path, wherein said media is turned over when said media is transferred to said scanners and printers again along said turnover path and said media-feeding path, so that said second side of said media is processed by said scanners and printers.