Dual Direction, Varying Force Sheet Aligner
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
Sheets of different sizes and weights are aligned accurately before they are stapled into a set. The alignment system consists of an electrically semiconductive accumulator tray 1, with a front paper stop reference wall 2, a movable left-hand paper stop reference gate 3, paper anti-bounceback stabilizers 4, aligner paddles 5-10, and a means to drive (not shown) and index the paddles. The urethane material out of which the paddles are made is of high wearability, and has a coefficient of friction (paddle to paper) which is greater than that of paper to paper. Paddle wear and the effect of differing paper set thicknesses (making the paddles bend more and press on the sheets harder) are minimized by the paddle configuration.