Sensor for identifying marks on a ribbon

A reflective type light sensitive sensor assembly is used for sensing the position of marks on a surface moving past the sensor. A typical showing is in relation to sensing marks on a ribbon used during printing operations, or lamination operations. The sensor assembly includes a LED light source th...

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1. Verfasser:	DUNHAM MATTHEW K
Format:	Patent
Sprache:	eng
Schlagworte:	CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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creator	DUNHAM MATTHEW K
description	A reflective type light sensitive sensor assembly is used for sensing the position of marks on a surface moving past the sensor. A typical showing is in relation to sensing marks on a ribbon used during printing operations, or lamination operations. The sensor assembly includes a LED light source that has a central axis, and a light sensitive transistor or sensor mounted in a single housing, with the housing oriented so that the axis of the light from the LED is inclined at an acute angle relative to the surface of the ribbon. The axis is at an angle other than perpendicular or near perpendicular to the surface. The marks used for identification are light diffusing marks, such as white marks or strips that will provide adequate reflection of light back to the light sensitive transistor or sensor forming part of the sensor assembly.
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subjects	CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
title	Sensor for identifying marks on a ribbon
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