ATTACHMENT 1

BACKGROUND INFORMATION OF INVESTIGATION OF
SCANNING DEVICES

The information below has been gathered by the Library as a result three years of experience with a book edge device and recent investigation of alternate scanning devices.

1.1

A book-edge device capable of scanning both left- and right-hand pages for bound materials that are allowed to be turned up-side down and opened no more than 130ø is required for most bound materials.

In the past the Library has used a Xerox K5200 Series book-edge scanner. The company recently discontinued the manufacture of these devices. The Library now seeks proposals from offerors who have a comparable device from another manufacturer or may customize an existing device to meet the Library's requirements. Right-side up devices as described in the next section may be substituted for a book-edge device, provided they meets all requirements set within this contract.

The Xerox K5200 scanner software had a sophisticated "diffused" dithering alogirthm used to treat the moire patterns of printed halftones. The Library has found this algorithm to be far more superior than any other dithering algorithms.

1.2

Some of the bound materials to be digitized are not permitted to be turned up-side down, but may have covers that can be opened right-side up to 180ø. Devices that allow bound volumes to be placed in an upright position and are able to produce images according to requirements in Section C.6 may be used on these materials.

Because of the limited availability of such devices, the Library seeks proposals from offerors to suggest creative solutions to fulfill this need. One example of device that has the potential to fill this need is Minolta's DPCS 3000. However, this product will require some customization in order to meet the image requirements of this procurement. From demonstrations of this product, the Library has determined that the device lacks a dithering algorithm and the capability to produce grayscale images and JPEG compressed files as output.

1.3

Some of the bound materials to be digitized are not permitted to be turned up-side down and may not be opened more then a certain number of degrees. Devices that allow bound volumes to be place in an upright position, hold materials in a cradle and are able to produce images according to requirements in Section C.6 may be used on these materials. Because of the limited availability of such devices, their high cost, and the potentially low volume of materials to be scanned with such a device, the Library seeks proposals from offerors to suggest creative solutions to fulfill this need.

1.4

Depending on the capture equipment chosen for bound materials, it may be difficult to accomodate materials larger than 8«x14 inches. The Library, therefore, will accept proposals from vendors to scan materials larger than 8«x14, but not greater than 11x17 in Lot 2.

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