>>Sounds more like a setting on the printer itself. Try to set the printer to a file instead, and analyse the result. A formfeed is chr(12), or 0C in hex, there should be none of them in this file.
>>
>>Btw, my experience is that the easiest way to send data to a dot matrix printer with full control on what's going on, is to first print to a file, and then simply copy this file to the printer.
>
>That's what I do with whole page notes. But this system must work possibly with LPT, COM or USB. Not only "dot matrix" but thermal too.
>
>I tried "copy file to (myprinter)" and it was a disaster!
>
>Figure "myprinter" is "generic \ text only" :)
>
> Héctor

But you can still print to a file during testing, to see if the file contains formfeeds, meaning chr(12) or 0C hex, or not.