A program to dump images saved as GIF files on Epson type printers.
If no gif-file is given, Gif2Epsn will try to read a GIF file from stdin.
OPTIONS
-q
Quiet mode. Default off on MSDOS, on under UNIX. Controls printout of running
scan lines. Use -q- to invert.
-d dither
Sets size of dithering matrix, where DitherSize can be 2,3 or 4 only (for 2x2,
3x3 and 4x4 dithering matrices). Default is 2. Note image will be displayed in
this mode only if the mapping option (see -m) selected this mode.
-t bw
Sets threshold level for B&W mapping in percent. This threshold level is used
in the different mappings as selected via -m. Default is 19%.
-m map
Select method to map colors to B&W. Mapping can be:
0
Every none background color is considered foreground (white color but is drawn
as black by printer, unless -i is specified).
1
If 0.3 * RED + 0.59 * GREEN + 0.11 * YELLOW > BW the pixel is considered white
color.
2
Colors are mapped as in 1, and use dithering of size as defined using -d
option. BWthreshold is used here as scaler.
The default is option 0.
-i
Invert the image, i.e. black -> white, white -> black.
-n
Nicer image. Uses double-density feature of Epson printer. This takes more
time (and kills your ink cartridge faster...) but results are usually better.
-p printer
Under Unix, output goes to stdout by default; under DOS, the default is LPT1:.
With this switch you can specify the output target.
-h
print one line of command line help, similar to Usage above.
NOTES
The output has an aspect ratio of 1, so a square image will be square in
hardcopy as well.
The widest image can be printed is 640 pixels, on 8 inch paper. You
probably will need to flip wider images, if height is less than that:
gifflip -r x29.gif | gif2epsn