You're probably mixing apples and oranges. Just what, exactly, are you trying to accomplish? Print or plot?
Imagaro is a bitmap tracing engine, no? LXi, nee Flexi, is a vector application with some rudimentary bitmap capabilities, yes?
So then, just what are you trying to import into your trace application? Bitmap or vector? If it's something that you whomped up in LXi then most likely it already is a vector image.
Bitmap image: A collection of values for each and every pixel in an inherently rectangular image. A bitmap is not scalable without losing or gaining information through inference.
Vector image: A collection of simple polynomials, text, and fill information, sufficient to draw all of the lines in an image. A vector image is infinitely scalable without any loss of information.
Plotters plot vector images.
Printers print, ultimately, bitmap images. At least those that are usually dealt with here in these waters.
You can send a vector image to a printer and it will be conveniently converted to a bitmap image en passant by the attendant software. Usually.
You cannot send a bitmap image to a plotter. A plotter moves a single tool in X and Y, information that does not exist and cannot be inferred from a bitmap.
