DEK 265 horizon Engineering Specification page 28

ENGINEERING SPECIFICATION
MACHINE OPTIONS
Paste Volume Prediction
22
2Di combines the results of board and stencil inspections, and using a propriety
formula calculates the predicted paste volume. This is only available while the
inspection is set to advanced for both board and stencil.
Screen
In the example shown the aperture is 100% clear. The paste on pad value was 100%.
This can be represented by the following model of the printed paste :
Bottom face equals area of
paste on pad, ie 100%.
From this information the system predicts the volume of paste, in this case 100%.
In the following example the aperture has a blockage of 40%. Therefore the aperture is 60%
clear. The 60% is equal to a rectangle of the same size as shown below. The paste on pad
inspection result is 90%.
Paste (Blockage) 40%
Screen
This is represented by the following model of the printed paste :
Bottom face equals area of
paste on pad, ie 90%.
From this information the system predicts the volume of paste, in this case 74.48%.
Engineering Specification
Aperture
Pad
Aperture
Paste (Blockage) 40%
=
Paste on Pad
Board
Top face equals area of
aperture not blocked by
paste, ie 100%.
Aperture
Screen
Top face equals area of
aperture not blocked by
paste, ie 60%.
Chapter Issue 1 May 00