Post

I'm down one of the rabbit holes again. I *just* wanted to print receipts on a Star TSP100 printer. Initial problem: unlike other printers, it does not support text, only graphics. And my receipt printing library only supports rendering to text based ESC/POS and StarPRNT...

Niels Leenheer

@html5test.com

The simple solution: add bitmap output to my own library... But no... Where I am at: building a fully compliant generic ESC/POS and StarPRNT renderer that takes any byte stream and renders it as an image, with even SVG support. And render that as StarGraphics format that the printer understands.

13/9/26, 8:50 am0 reposts1 like

Niels Leenheer

@html5test.com

13 Sept

So now I am building a bitmap font editor for tweaking the fonts, because there is no decent free bitmap font for receipt printers that supports all of the codepages that printers use...

Niels Leenheer

@html5test.com

13 Sept

And in the mean time I'm building a testsuite that looks at a dozen other receipt printer libraries and captures their output. I then compare my renderer with a couple of other renderers and actual printers to ensure it is compatible with pretty much everything a library can throw at it.