RUMdjet1 is a DVI driver for the HP DeskJet printer. It is part of an extensive TEX 2 toolkit which one of us (H.-W. Kisker) has developed during the last year for the IBM PC2. The driver is a dedicated version for IBM PC compatible computers running MS-DOS2. Although it is derived from Beebe's DVI driver family3, no efforts have been made to achieve portability to other hardware or other operating systems. The state of the software is preliminary. The runtime behaviour is rather stable indeed, but the program is still under development. Above all the source code at the time is not up to our normal standard and will not be distributed by default. For those who are courageous enough to deal with more or less `writeonly' code, the sources are available on special request. The final version of the driver including the sources will be available together with the above mentioned TEX toolkit in a few month.