Tolerance Range
Because the constraints of grid address and nominal pitch conflict, it is not
possible to always obtain the desired pitch that is specified in the Raster
Settings section. The computations made in the Tolerance range section give the
designer an idea about what the actual pitch will be along with the edge
smoothness.
Notch Depth
The notch depth is the depth of the notch formed when two droplets intersect as
shown in the diagram. This is computed using the Nominal Pitch and the droplet diameter.
Pitch Bounds
The designer may request a particular pitch or percent overlap but this value is
not necessarily achievable since droplets must be placed on the grid. The
program will pick a pitch (at least for 0/90 directions) that achieves the
desired overlap or tighter while keeping the droplets on grid. Therefore this
computation uses the droplet diameter, the nominal pitch and the grid spacing.
In the example at right, the droplet diameter = 60 um and the two pitches shown
are 20 um and 15 um. If the user specifies a pitch of 17 um the program cannot
achieve that given the DPI. Therefore it will pick the tighter pitch.
Pitch
This is the number of grid increments (i.e .for a 5080 DPI one grid increment is
equal to 5 um) that is used by the program when spacing the droplets.