Cruse Scanner Specifications:

Original holder: 48" x 72“ magnetic platform with vacuum table 

Focus system: Autofocus

Scanner: 48 bit color

Max. resolution: 14.4k x 26.64k pixels 

DPI: 48" x 72" @300dpi ; 23" x 45" @ 600dpi 

Max. file size: 1.1 GB, 3x8 bit 

Lighting: High frequency cold-cathode, 4 x 55 Watts with texture lighting effect


Assessment of Light Exposure on the Cruse CS 220 ST

Lois Price , Senior Conservator, Winterthur

“Documents scanned on the Cruse take approximately 1½ minutes to pass under the scanning light.  Light meter measurements indicate that the scanner  which operates at an intensity of 28,000 lux (2,800 foot candles) and emits UV radiation at the level of 40 microwatts per lumen. 

"The exposure experienced by a document during a single scan is therefore equivalent to 14 hours of exposure at 50 lux (5 foot candles) with tungsten or other low UV lighting.”

Copyright 2008 The Athenæum of Philadelphia