IBM CF Series manual System Overview

			Revision Record
Rev. No.	Date	Action
0	12-10-95	Original draft.
1	05-24-96	Added sections 1-4 and Appendices A & B

1 SYSTEM OVERVIEW

The CF Series Scanner is a highly versatile data capture device, providing choices in speed and resolution and producing high quality data. It also allows a choice between using a fixed threshold or an adaptive threshold. An adaptive threshold takes into account variations in the shading of the media to yield consistently good results, even from less than optimal documents. See Figure 1-1 for an illustration of the scanner.

SCAN-GRAPHICS accomplished this in a way which makes the CF Series Scanner as easy to use and maintain as possible. Care has been taken in the design and manufacture of the unit to build in a strength which will keep the scanner operating reliable for years.

The CF Series Scanner can accommodate documents with widths up to 44 inches (the maximum active scan area is 43 inches). The scanner does not limit the length of the document.

Although the technology employed by the CF Series Scanner is very complex, its function can be described in quite simple terms. It consists of a set of cameras focused on a narrow window; lamps to illuminate the document; a transport system which moves the document past the window; and the electronics to convert the data captured by the cameras into a useful form.