To add a new custom paper size from scratch (nonsystem HDI drivers only)
When you plot a nondimensional raster image, such as BMP or TIFF, the size of the plot is specified in pixels, not inches or millimeters.
Each plotter has a maximum printable area determined by where it grips the paper and how far the pen shuttle reaches. Verify that the plotter is capable of plotting the new dimensions.
AutoCAD prints a cross that defines the paper size and a rectangle that defines the printable area. If all four sides of the rectangle are not printed, increase the printable area.