print via dpu-3445 (ESC/P) c#

Question

4.00/5 (1 vote)

See more:

Hi there,
I have an old thermal printer which uses the ESC/P PCL. I checked all the documentation i could find on the protocol, but every example byte sequence i've found is wrong. All i got from the printer is a row of question marks.
The goal is to send a byte sequence to the printer via serial port, that works.
Is anyone familiar with this type of printer/PCL?
Thanks

Posted 2-Apr-11 0:04am

joe628aa

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2011-04-02T03:30:00

If all you are getting from the printer is question marks, it sounds like you have communication problems.
Try talking directly to it via HyperTerminal or similar: set the parameters the way the book says, and look for an ID string request or similar. (A quick search gave me "<Esc>*s#^ *" which might report the model number - http://www.hancockcomputertech.com/blog/2010/05/03/pcl-escape-sequence-reference/[^])

When you can talk sense from your keyboard and get a readable response, you can move on - but it is pointless until you know you can talk both ways.