Browse Prior Art Database

Scanner Devices

IP.com Disclosure Number: IPCOM000077130D
Original Publication Date: 1972-Jun-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Herd, H: AUTHOR [+3]

Abstract

A scanning device is described herein consolidating a light source, an aperture opening, a glass protective cover, and reflectors into one unit. The advantage of the aforesaid combination is that it defines a much improved front end for a small scanner.

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Scanner Devices

A scanning device is described herein consolidating a light source, an aperture opening, a glass protective cover, and reflectors into one unit. The advantage of the aforesaid combination is that it defines a much improved front end for a small scanner.

A piece of quartz glass is selected of 10 to 15 mils.thick to be used as the conventional cover plate. Thru the process of deposition, etching, sputtering etc., a tungsten filament can be layed down on one side of the glass to the proper size and resistance.

The other side of the glass can then be coated with a chrome finish vacuum deposition which first will act as a reflector for the filaments, and secondly, an aperture opening of proper size and shape such as 1 mil by 20 mils square is provided. This can be etched between the filaments, see sketch. This whole assembly can now be mounted to the housing as a unit. The housing now becomes a shell, instead of being filled with epoxy as in the former units. This space can now be used for small-chip amplifiers or other electronic or mechanical devices, such as mirrors or baffles between the aperture opening and field opening. The scanner now becomes a much improved, more accurate, and flexible instrument by which optimum conditions can be achieved with the least effort. Also, manufacturing processes are greatly improved upon for accuracy and stability.

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