Ezprint is a Tcl extension for simplified Windows printing. It allows a Tcl application running on a Windows NT/2000/XP system to send raw data to a local or network-connected printer. It uses Tcl channel routines to define a new type of channel for printing.
To clarify: Ezprint does no data conversion. It just transports raw data to your printer. The data goes via a Windows installed printer driver, but in RAW mode, so the driver does no data conversion either. It is up to your application to generate data which is compatible with your printer. If you need data conversion - for example, an application generates PostScript but you need it to go to some random ink-jet printer - you probably won't find Ezprint useful.
Ezprint is distributed under an open source license, and comes with source code and a Borland-built DLL. Ezprint is looking for a better home, but for now you can get it at http://lbayuk.home.mindspring.com/ezprint/