Thanks for the enlightenment, Yan. Wow, I had no idea that modern
Windows printers were so "dumb." We are not at all married to that
printer but we DO have to use a USB printer. I'm assuming that when
you mention a "line printer" you mean a parallel port interface?
Ed
--- In "Yan Seiner" <> wrote:
>
> --- In "Ed" <edkbaugh@> wrote:
> >
> > Hi all,
> >
> > I'm using a TS-7200 board for embedded control of a machine that uses
> > stepper motors, LCD display, serial comm, digital I/O, and a USB Flash
> > Drive. I've learned enough about Linux to get my (fairly large)
> > application working and installed on 10 new machines that are ready to
> > be shipped to our customers. All I need to finish the project is to
> > be able to send simple ASCII text from my program to a USB printer (HP
> > D1420).
>
> Based on the price, I'd guess it's a win-printer.
>
> Basically, the printer is noting but a head transport servo and a
> printhead. It has no on-board intelligence.
>
> The driver must render whatever you want to print into individual ink
> squirts, and then send them to the printer. You can't send ascii as
> the printer has no built-in fonts or even any way to move the
> printhead by itself.
>
> So you need to get your ascii, convert to postscript, hand it to
> ghostscript/HPIJS/whatever that will then create the ink-squirt
> instructions and send them to the printer.
>
> Are you absolutely married to that printer? The simplest thing would
> be to buy a line printer and then you could send straight ASCII.
>
> You can buy Panasonic and Okidata line printers for < $200....
>
> --Yan
>
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