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4.11 Download Pattern File
The "download pattern file" of this driver is a file that defines the patterns to be used by the
scanner to execute various image processing. This file is available in the following two versions.
Each version can be selected using the [Download Selection Dialog] that opens when
[Download] is selected.
The file is a text file that conforms to the following rules. Use an appropriate text editing
program (for example, "Note Pad" in the operating system) to edit the file.
♦ Dithered download pattern file
Any user defined dithered pattern can be used to scan an image by downloading the pattern
from the dithered download file to the scanner. The defined pattern becomes effective when
[Download Pattern] is selected for [Halftone].
Some models do not support this file. See "Relevant Image Scanner Specification" in
Appendix.
Although the standard extension of the file name is ".DTH," there may be exceptions.
Coding configuration:
(n, size in the X direction),(m, size in the Y direction),
(pattern value for the X1/Y1 coordinates),
(pattern value for the X1/Y2 coordinates),
(pattern value for the X1/Y2 coordinates),........
(pattern value for the Xn/Ym-2 coordinates),
(pattern value for the Xn/Ym-1 coordinates),
(pattern value for the Xn/Ym coordinates)
Meaning of each element:
(n, size in the X direction) indicates the size of the matrix in the X direction. Specify 8
for the scanner supported by this driver.
(m, size in the Y direction) indicates the size of the matrix in the Y direction. Specify 8
for the scanner supported by this driver.
(Pattern value for the Xx/Yy coordinates) contains a values in the range of 0 (bright) to
255 (dark) that specifies the brightness of the X coordinate, x, and the Y coordinate, y.
Note
Use a delimiter other than a number to delimit elements. For most cases, use a comma (,).