Browse Prior Art Database

Flexible Impact Gate for a Document Feed Device

IP.com Disclosure Number: IPCOM000082012D
Original Publication Date: 1974-Sep-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Froula, JD: AUTHOR

Abstract

This document feed employs a document gate constructed of a flexible low-density plastic to provide minimum spring rate in the direction of an impacting document, minimum inertia, and a wide area impact plane to prevent document buckling, and to reduce impact forces which would shear the document.

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Flexible Impact Gate for a Document Feed Device

This document feed employs a document gate constructed of a flexible low- density plastic to provide minimum spring rate in the direction of an impacting document, minimum inertia, and a wide area impact plane to prevent document buckling, and to reduce impact forces which would shear the document.

Document 11 is transported over document glass 13 by a moving flexible belt 15 to document gate 17. When the document 11 strikes gate 17, the gate pivots back against pivot screws 19 as the document stops. The gate 17 is constructed of a flexible low-density plastic material and is constructed to provide minimum spring rate in the direction of an impacting document, minimum inertia and adequate strength. Gate thickness and area in contact with pivot screws 19 are minimized to provide flexibility, as the document gate impact force is directly proportional to the square root of the gate spring rate. A wide area in the impact plane is provided to maximize both document contact area and critical buckling force on the document 11.

The document 11 is fed from the glass 13 by the belt 15, once gate 17 is lowered by pin 21 fixed in rotatable shaft 23 driven by solenoid and linkage, not shown.

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