Fine line phototools are available at resolutions from 2500 DPI up to 40,000 DPI up to a size of 28" X 32" ( 711 mm X 812 mm )
We can produce features / lines down to 4 microns with the specs as follows:

Plotter geometric accuracy of < 4 microns
Plotter geometric repeatability of < 2 microns

Acceptable data formats:
Dxf
Hpgl
Gerber
Postscript
Dpf
Cwk & gwk