Patent ID: 7121200

Claim:
A roller parallelism adjustment structure comprising: a roller feeder, said roller feeder comprising a first end a second end, two side panels fixedly provided at two opposite lateral sides between said first end and said second end, two movable side plates pivotally mounted between said side panels; a transfer roller rotatably mounted between said side panels, and an impression roller rotatably mounted between said movable side plates, wherein one of the two movable side plates has a slot, with the transfer roller and the impression roller provided between said first end and said second end and adapted to transfer a material from said first end to said second end; and a roller parallelism adjustment mechanism installed in one side of said roller feeder to support one end of said impression roller and adjustable relative to said roller feeder to hold said impression roller in parallel to said transfer roller, wherein said roller parallelism adjustment mechanism comprises a base block, wherein said base block has a stop wall, a bearing hole cut through the stop wall, a bearing for rotatably receiving said one end of said impression roller and located within the bearing hole, an insertion flange integrally extending from the stop wall as a single piece and arranged around the bearing hole, a plurality of screws adapted to affix said base block to one said moveable side plate, and a plurality of adjustment through holes extending through the stop wall around the bearing hole and outside of the insertion flange, with the insertion flange being of a size for moveable receipt in the slot, with the stop wall being of a size larger than the slot, with the plurality of adjustment through holes receiving said screws; said screws are radially movably mounted in said adjustment through holes and adapted to affix said base block to said one of the two movable side plates for enabling the insertion flange to be moved in said slot and then affixed thereto in position to hold said impression roller in parallel to said transfer roller.