Patent ID: 8528901
Filing Date: 2013-09-10
Classification: B65H

Abstract:
1. A paper feed mechanism for a printer, comprising: a paper feed roller; a paper pressure roller that is pressed to the paper feed roller; a roller support member that supports the paper pressure roller; a rocking support member that supports the roller support member pivotably on a rocker fulcrum; and an urging member that urges the paper pressure roller to the paper feed roller by the intervening roller support member; the paper pressure roller extending widthwise to the paper at the downstream side of the roller support member in the paper feed direction, and defining an axial direction widthwise to the paper, the urging position of the urging member being on the upstream side of the roller support member in the paper feed direction, and the urging position being movable with respect to the paper pressure roller along the axial direction of the paper pressure roller; wherein the rocking support member comprises a shaft member extending widthwise to the paper, wherein the roller support member comprises a guide hole formed in parts of the roller support member on both sides of the paper width to support both end parts of the shaft member so that the shaft member can move a specified amount, wherein the rocker fulcrum is disposed in a part of the roller support member substantially in the center of the paper width; and wherein the shaft member extends widthwise to the paper, passes through the guide holes, and engages the rocker fulcrum.