--- In "Ed" <> 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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