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Browse Prior Art Database

Job Offset and/or Sheet Aligner

IP.com Disclosure Number: IPCOM000109898D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 4 page(s) / 125K

Publishing Venue

IBM

Related People

Karnuth, DM: AUTHOR [+3]

Abstract

Disclosed is a device for use in a cut-sheet printer that offsets jobs and aligns sheets within jobs, resulting in a neat stack of offsetted jobs which can be readily separated and distributed. This device utilizes a novel whip design for aligning, and two devices working together for offsetting.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Job Offset and/or Sheet Aligner

       Disclosed is a device for use in a cut-sheet printer that
offsets jobs and aligns sheets within jobs, resulting in a neat stack
of offsetted jobs which can be readily separated and distributed.
This device utilizes a novel whip design for aligning, and two
devices working together for offsetting.

      Output from a cut-sheet printer usually consists of several
jobs.  It is desirable that this output be neatly aligned and jobs
distinguished from others so they can be easily separated and
distributed.  This article describes the hardware and technique
whereby these tasks can be accomplished.

      Two urethane whips are mounted 180 degrees apart in a holder
that is secured to the motor shaft (see Fig. 2).  The whip holder is
designed to allow the whips to be replaced easily and holds them on
an angle outward in relation to the shaft.  This angle ensures that
the whips will spin outward when the motor starts.  The whips are
designed with a hat section on one end that secures the whip to the
holder.  The other end has a hole in the length that forms a thin
wall tube (see Fig. 2).  This allows the end to deflect when it hits
the paper and reduces the noise level compared to solid section whip.
Also, the hold improves the friction and wear characteristics of the
whip overall.

      A whip motor is mounted on the rear paper stop.  The second
motor is mounted on the adjustable front paper stop (see Fig. 3).
The motors are mounted at a compound angle in relation to the guide
surface and top surface.  When the motor is turned on, centrifugal
force will extend the whips to hit the paper such that they will move
paper to the stops.

      Each sheet is carried into the stack under the whips while they
are...