Paper size is incorrectly set!.....
Merlin's idea, of what paper Lex has, and Lex's are different or you have loaded Lex's tray with the paper sideways
Your in Oz so it would be A4 standard and I guess your trying to print B5 script. Try these
The printer has been loaded with one size paper but thinks it is another. change printer settings via keypad on printer
The B5 scripts paper is being loaded sideways instead of length ways or visa verse
There is a incorrect setting in the printer driver that is set up for this specific printer that 'merlin' uses, check print driver setting (control panel,printers and fax, right click on lexmarkt642's icon, properties and check properties fully) in windows software that is running under merlin, also check merlin settings if any for this printer