Browse Prior Art Database

Short Path, Job Separation Method

IP.com Disclosure Number: IPCOM000051000D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Miklos, MJ: AUTHOR

Abstract

Shown above is a technique for offsetting paper sheets in a paper feed path for the purpose of separating copy jobs. The offset is achieved by pivoting selected paper sheets to a predetermined angle and subsequently straightening them about the leading corner pivot point of the skewed sheet.

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Short Path, Job Separation Method

Shown above is a technique for offsetting paper sheets in a paper feed path for the purpose of separating copy jobs. The offset is achieved by pivoting selected paper sheets to a predetermined angle and subsequently straightening them about the leading corner pivot point of the skewed sheet.

A paper sheet 10 moving from left to right strikes a retractable pin 12. The pin 12 is inserted in the path of the paper sheet. Paper sheet 10 then pivots about pin 12, as indicated by dashed lines 14. As the sheet moves forward, the leading corner of the sheet strikes wall 16. The sheet pivots about point 17 until it abuts wall 1-6. When the sheet pivots from skewed position 14 to position 18 (solid lines), it is offset a distance X given by the following expression:
X=(L - Z)(1 - cos Alpha).

The dimensions L and Z and angle Alpha are shown above. Angle Alpha is controlled by activating pivot pin 12 to start the pivoting of the paper sheet and retracting the pivot pin when a sensor 20 detects the leading edge of the pivoted sheet 14.

The pivoting of the paper sheet could be accomplished inside a copier. For example, the sheet could be pivoted just prior to the fuser station. Thus the paper sheet would pass through the fuser at a slight skewed angle and be straightened in the exit pocket for job separation offset.

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