Bio-Rad GS-800™ Calibrated Densitometer - Manual (Page 13)

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Section 4 Operation
4.1 Overview of Operational Components
This chapter provides a summary of the Model GS-800 Calibrated Imaging Densitometer
components used during operation and explains the startup procedure.
Transparency Module
The Transparency Module (Figure 2.2) is secured to the Model GS-800 Calibrated Imaging
Densitometer by two elongated hinges at the rear of the Densitometer. This Transparency
Module should be lowered onto the Densitometer base for reflectance and transmittance
scanning. The thick border gasket on the transparency module allows you to place
samples up to 3.0 mm thick on the image window for scanning.
Warning: Always lower the transparency module slowly and release it only when it lies
flat on the body of the Densitometer.
Image Window
The image window (Figure 4.2) is the area where the sample to be scanned is positioned.
Light collected from the sample is focused through a lens onto a charge coupled device
(CCD) array that captures the image.
Caution: The image window is glass. To avoid breakage, do not press firmly or place
anything other than a sample for scanning on the image window.
C alibration W indow
B oth calibration
w indow s m ust be
kept clean for
proper operation.
C alibration W indow B ezel
Im age
W indow
F ro n t
.
Figure 4.2 The image window and bezel on the Model GS-800 Densitometer