Printing to LPT1 in Win 7
Hi
We have a requirement to print shipping labels from our ERP system remotely; the ERP system does this by sending a file to LPT1 which then prints the label (the printer assigned to LPT1 is typically a Zebra LP2844 or Zebra GK420d and this is done via
the "net use" command).
We use 2X Application Server XG for remote access. Most of the client warehouses have Windows XP boxes and the process has worked fine for many many years.
However one of our clients has purchased a new Windows 7 box and for the life of me cannot get it to print a label to LPT1. We have successfully set the Zebra printer as LPT1 via "net use" and can print fine to it but as soon as we print
a label from our ERP via 2X system nothing comes out. The PC is configured
exactly the same way as I would have done with a Win XP box, same 2X client version, Zebra Universal Driver etc.
In order to rule out 2X being the problem I have brought the Win 7 PC into our own network and run the ERP program locally but it still won't print to LPT1.
At the moment I am guessing something has changed security wise in Windows 7 that is stopping the job from printing but I am not sure how to troubleshoot the situation further.
Any suggestions appreciated.
Hi flanjman,
Please first follow the guide and see if it would help here:
Fix printer problems
We may also try to enable printing logging:
Follow the guide below:
Windows Server 2008 R2 and Print Logging
Best regards
Michael Shao
TechNet Community Support
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Trying to network my hp deskjet 6940 printer via a new win 7 64 pc. the printer shows as "offline"
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Problem in printing to LPT1 through applet?
Hello everyone,
I am having problem in printing through Applet in LPT1 of remote client machine using "gridDoubleClicked" method of customized "GridPanel" which is third party component. The class structure is given below:
public class GridPanel extends Panel implements GridPanelInterface, AdjustmentListener, KeyListener, FocusListener, Serializable
}I am using above class to populate data in table and perform "double click" action. I am using JDK 1.5 and a self signed jar to access from remote machines through applet.The code, I am using is given below:
public class testApplet extends Applet {
printToLPT1 lpanel =new printToLPT1();
public void init() {
this.setLayout(new BorderLayout());
this.add(lpanel, BorderLayout.CENTER);
this.setSize(380, 250);
public class printToLPT1 extends Frame{
GridPanel grid;
public printToLPT1() throws Exception {
grid.addGridListener(new GridAdapter() {
public void gridDoubleClicked(GridEvent ge) {
testPrint();
public static void testPrint() throws Exception {
try {
BufferedOutputStream pos = new BufferedOutputStream(new FileOutputStream("LPT1"));
String str = "\n\n\n\n\n\n\n\n\n\n\n";
pos.write(str.getBytes());
pos.flush();
pos.close();
} catch (Exception fnfe) {
throw new Exception("PRINTER SETUP IS NOT PROPER");
}For applet, I have used following script in login.html:
<APPLET
height="200px"
archive="testprinter.jar,jbcl.jar,grid.jar,plugin.jar"
width="390px"
align="top"
code="test.testApplet.class"
name="Testing"
ALT="<P>This applet requires Java to be enabled! Check the browser options or see your SysAdmin." MAYSCRIPT>
<P>This page requires Java! Get it free from <A HREF='http://www.java.com/'>www.java.com</A>.</P>
</APPLET>
------------------- If signed jar file of application is run using command line in client machine then "double clicked" of GridPanel method works fine and send signal to printer at LPT1 port but when same application is called using applet and accessed from remote machine with printer in LPT1 port, in that time also "double clicked" of GridPanel method works fine but printer could not be found and Exception is thrown java.lang.Exception:"PRINTER SETUP IS NOT PROPER" . Why is this happening? Can anyone suggest me the solution for this problem?
Thanks in advance.
-Ritesh
Edited by: ritesh163 on Apr 15, 2010 2:56 PMThe SSCCE for this problem is given below:
//Applet class
package test;
import java.awt.BorderLayout;
import javax.swing.JApplet;
public class testApplet extends JApplet {
testPrint lpanel =new testPrint();
public void init() {
this.setLayout(new BorderLayout());
this.add(lpanel, BorderLayout.CENTER);
this.setSize(380, 250);
// Printing class...
package test;
import com.borland.jbcl.layout.XYConstraints;
import java.awt.Color;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import wdn.grid.GridAdapter;
import wdn.grid.GridData;
import wdn.grid.GridEvent;
import wdn.grid.GridPanel;
public class testPrint extends javax.swing.JFrame {
// Variables declaration - do not modify
private javax.swing.JButton btnPrint;
private javax.swing.JPanel jPanel1;
// End of variables declaration
GridPanel grid;
GridData gdata;
String[] gridCols = {
"Receipt No", "Name"};
public testPrint() {
grid = new GridPanel(0, 8);
gdata = new GridData(0, 8);
grid.setRowHeaderWidth(0);
grid.setGridData(gdata);
grid.setMultipleSelection(false);
grid.setColWidths("100,60");
grid.setColHeaders(gridCols);
setGridProperties(grid);
grid.setColSelection(false);
this.setVisible(true);
grid.addGridListener(new GridAdapter() {
public void gridDoubleClicked(GridEvent ge) {
//This event works fine...
System.out.println("Press Re-Print button...");
try{
stringToPrinter("testing by grid \n\n\n\n\n\n\n\n\n\n\n\n\n");
}catch(Exception ex){
ex.printStackTrace();
public void gridCellsClicked(GridEvent ge) {
btnPrint.setEnabled(true);
initComponents();
jPanel1.add(grid, new XYConstraints(52, 60, 100, 150));
grid.deleteRows(1, grid.getNumRows());
grid.insertRow(1);
grid.setCellText(1, 1, "12134", false);
grid.setCellText(2, 1, "test" + "", false);
grid.repaintGrid();
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
btnPrint = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
btnPrint.setText("Print");
btnPrint.setToolTipText("to Print");
btnPrint.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnPrintActionPerformed(evt);
org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.add(36, 36, 36)
.add(btnPrint)
.addContainerGap(287, Short.MAX_VALUE))
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap(198, Short.MAX_VALUE)
.add(btnPrint)
.add(57, 57, 57))
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
pack();
}// </editor-fold>
private void btnPrintActionPerformed(java.awt.event.ActionEvent evt) {
try{
stringToPrinter("testing \n\n\n\n\n\n\n\n\n\n\n\n\n");
}catch(Exception ex){
ex.printStackTrace();
public static void setGridProperties(GridPanel grid) {
grid.setRowHeaderWidth(0);
grid.setAutoResizeColumns(true);
grid.setRowNumbers(true);
grid.setCellSelection(false);
grid.setRowSelection(true);
grid.setHighlightColor(Color.blue);
grid.setHighlightTextColor(Color.white);
grid.setAutoResizeRows(true);
grid.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
public void keyPressed(KeyEvent e) {
if (e.getKeyChar() == KeyEvent.VK_SPACE) {
public void keyReleased(KeyEvent e) {
public static void stringToPrinter(String str) throws Exception {
try {
System.out.println("inside stringToPrinter...");
BufferedOutputStream pos = new BufferedOutputStream(new FileOutputStream("LPT1"));
System.out.println("inside stringToPrinter...1-pos::"+pos);
pos.write(str.getBytes());
pos.flush();
pos.close();
} catch (Exception fnfe) {
throw new Exception("PRINTER SETUP IS NOT PROPER");
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new testPrint().setVisible(true);
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As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as ‘Answered’ as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to reply
this post directly so we will be notified to follow it up.
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Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
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How Do I Find My Model Number?
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Thank you for your time.
Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!
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W a t e r b o y 71
I work on behalf of HP -
How do I print to a dot matrix printer using LPT1?
Sorry, reposting the question. Hit the wrong button on the forum.
OS is XP.
I have an old application
that worked previously. I built a new executable and installer and
installed on my target machine. This is a new machine but same brand and model motherboard as used
before.
I used VISA with LPT1 as the resource name. I get back an
error 1073807302.
The printer is working as evidenced by printing
from Notepad. I installed the driver from XP. The printer is a Panasonic
KXP1150. I need the tractor feed for this application.
Anyone
have an idea where to start trouble shooting?
thanks,
Chris
Solved!
Go to Solution.Here is the snippet of my code that is causing my consternation.
See attached.
Chris
Attachments:
lpt printer snippet.vi 26 KB
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