How: Force paper size, merge all pages & scale to fit?

[thenewguy]

I have an issue where the printer paper size is not reported correctly by the client. This is not a CUPS problem but requires a CUPS solution. The CUPS server prints test pages to the printer without issue. The print is a Brother TD-4550DNWB and is configured to use 4" continuous tape for receipts. This is the only printer the CUPS server is managing and no others will be added - so a solution that only works for one printer is no problem.

The client is a Windows ARM device and must use the built in Windows IPP generic driver because Brother does not offer drivers for Windows on ARM. The Windows ARM device cannot print to the printer directly due to the driver situation. As far as I can tell, none of the comparable printers offer drivers for their devices either. This is where the problem starts. The client only offers the option to use 4x6 paper. When printing from the client the printer starts, outputs about 1" of printed paper, and then errors with mentions the paper issue.

How can I intercept the print from the client before it is passed to the printer? I must make this work due to time constraints and lack of other options. Is a custom filter the correct place to be looking? How can I catch the incoming print, merge and scale all of the incoming 4x6" pages into one 4" long page for continuous tape and then forward it to the printer?

[thenewguy]

Was able to resolve by reworking the Brother scripts provided by their installer