The LaserMaster cable used on both the WinPrint 800 and the WinPrint 1000 is a custom cable, utilizing a high speed serial interface. You will not be able to buy this cable anywhere. However, you could easily build one from scratch or repair an existing one. There are companies out there that will build the cable for you as well. One is http://www.cablemakers.com The cable uses standard 37-Pin D-Shell Connectors, and a 10' length of shielded cable.

Use shielded cable with a Male 37 pin connector at each end.
Looking at the end of the cable, the top row of pins would be 1-19, the lower row 20-37.
The two connector "D" shells should be connected together by the shielding in the cable. This is the pinout for the cable:

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Data Cable Markings:
AWM 2464 VW-1 80ºc 300v E101344 26AWG CSA Type T2 LL80671 FT1
The LaserMaster part number was CB-003M, and the cable is 10' in length.

Power Cord Markings:
CSA Type SVT AWG18X3C 60ºC LL40378 FT2 444011
The power cord has a standard computer style plug on the printer end, except it's a right angle plug.