Browse Prior Art Database

Document Aligner System

IP.com Disclosure Number: IPCOM000088629D
Original Publication Date: 1977-Jul-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 3 page(s) / 57K

Publishing Venue

IBM

Related People

Flavin, TF: AUTHOR

Abstract

This arrangement provides selectable alignment for documents traveling in a document transport path, so that the documents may be fed in a straight line until they are free of any preceding nonaligning portion of the transport.

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Document Aligner System

This arrangement provides selectable alignment for documents traveling in a document transport path, so that the documents may be fed in a straight line until they are free of any preceding nonaligning portion of the transport.

The principal function of the system is to delay the application of an alignment force to the documents until the trailing edge thereof is free from any previous nonaligning portion of the document feed, thus preventing buckling and reducing probability of damage to the leading corner of the document.

The system includes a plurality of slitted disk aligner rolls spaced along the transport path, as disclosed by U. S. Patent 3,148,877. The angular position of the aligner rolls is selectively variable, with the aligner rolls normally being positioned so that sheets or documents may be fed in a straight line until their trailing edges are free of the previous portion of the transport.

The trailing-edge detector device then changes the direction of feed of the aligner rolls so that there is a directional component toward an alignment surface as in the usual usage of such aligner rolls. After the aligner rolls have fed at an angle for sufficient distance to insure completion of alignment, the direction of feeding is restored to the nonaligning angle in such a way as to maintain alignment during the direction transition.

Fig. 1 is a plan view of one form of aligner mechanism arranged to obtain the results described above, and Fig. 2 is an elevational view of the mechanism shown in Fig, 1. Several slotted aligner rolls 3 are provided at suitably spaced intervals and are driven by an assembly of bevel and cone gears 5 and 7 which, in turn, are driven by bevel gears 9 which are pinned to a common drive shaft 11.

Each of these assemblies is carried in a rotatable block 13, arranged to pivot about the axis of the gears 7. These assemblies rotate on a pin which extends through a base member 15, in turn fastened to carrier blocks, such as 17, which are attached to the frame of the document transport equipment.

It will be appare...