Supposedly the imagewriter is the same as the c-itoh 8510, which looks like the Apple DMP, and the NEC PC-8023 printer.

Apple DMP
[Linked Image from i.imgur.com]
C.Itoh 8510
[Linked Image from i.imgur.com]
Nec PC-8023
[Linked Image from i.imgur.com]




so I was trying the imagewriter with the BBC Micro (bbcb), but the dumpmaster rom didn't have the imagewriter or the citoh 8510, but it did have the PC-8023:

The PC-8023 is # 11
[Linked Image from i.imgur.com]

*FX 5,2 selects serial port
*FX 8,7 selects 9600 baud
*PRINT P11 prints to the NEC 8023 which is pretty much the same as imagewriter control codes.

[Linked Image from i.imgur.com]