Browse Prior Art Database

Sheet Alignment Sensing Station

IP.com Disclosure Number: IPCOM000082831D
Original Publication Date: 1975-Feb-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Cralle, WO: AUTHOR [+2]

Abstract

This sheet alignment sensing station employs a single-optical sensor to detect the cornered alignment of a sheet.

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Sheet Alignment Sensing Station

This sheet alignment sensing station employs a single-optical sensor to detect the cornered alignment of a sheet.

Sheet 11 is driven in the direction of arrow 12 to a registered position against the alignment detecting members 13 and 14. Optical detector 15 comprising a light-emitting diode and a photosensor, not shown, monitors the extended surfaces 16 and 17 of alignment members 13 and 14, each of which cause the light rays 18 emitted from the light-emitting diode to be reflected in the path 19 to the photosensor.

As shown in Fig. 2, movement of the sheet against alignment member 14 causes it to pivot in the direction of arrow 21, causing the light ray 19 to be reflected from the surface 16. As shown in Fig. 3, movement of the sheet 11 against alignment member 13 causes it to pivot in the direction of arrow 22, causing the light ray 18 to be reflected in the direction of arrow 23 away from the photosensor. The absence of a light at the photosensor indicates that the sheet is properly aligned against both alignment members 13 and 14.

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