Browse Prior Art Database

Passive Paper Stop Fingers

IP.com Disclosure Number: IPCOM000039604D
Original Publication Date: 1987-Jul-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Billy, M Hopping, JM Primmer, KR Stuehler, JE [+details]

Abstract

In a xerographic reproduction device, the problem of the paper stack shifting or moving in the device's duplex tray is solved by providing a number of passive paper stop fingers or fabric. These fingers are located so as to cooperate with the various different length papers that can be used in the reproduction device. (Image Omitted) The duplex tray is of the type having an air bearing underneath the paper stack. As a result, a small force can easily push the stack out of alignment. Figs. 1 and 4 are top views of the duplex tray. Figs. 2 and 3 are two side views of a stop finger. Fig. 4 shows the use of a pile fabric. Paper stop fingers 10 keep the stack from shifting away from reference edge 12, while allowing various paper sizes (see scale 13) to be used without operator intervention.