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admin:printer_installation [2026/02/26 07:20] – [Change settings of ZD421 via the http interface] Nick Pendergrastadmin:printer_installation [2026/02/26 23:31] (current) – [Calibrate labels for ZD421] Nick Pendergrast
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 {{indexmenu_n>195}} {{indexmenu_n>195}}
 ====== 25.18. Label printer hardware setup ====== ====== 25.18. Label printer hardware setup ======
-We recommend **Zebra ZD421t 203dpi** (which has replaced the Zebra GK420t which we recommended previously) label printer with a network port. 
- 
-<WRAP center round important 80%> 
-It is very important to order the **203dpi model** of the ZD421t, as the 300dpi model will not work correctly with our code. 
-</WRAP> 
- 
-You may use other printers that support the ZPL printing language (or EPL if using mSupply 3.2 or earlier), but we cannot provide much support for these models as we have not used them ourselves. 
  
 ===== ZD421 ===== ===== ZD421 =====
  
-We now recommend the Zebra ZD421 model+We recommend **Zebra ZD421t 203dpi** label printer with a network port (which has replaced the older Zebra GK420t) .
  
 [[https://www.zebra.com/content/dam/support-dam/en/documentation/unrestricted/guide/product/zd421-zd621-ug-en.pdf|ZD421 User guide]] [[https://www.zebra.com/content/dam/support-dam/en/documentation/unrestricted/guide/product/zd421-zd621-ug-en.pdf|ZD421 User guide]]
 +
 +<WRAP center round important 80%> 
 +It is very important to order the **203dpi model** of the ZD421t, as the 300dpi model will not work correctly with our code.
 +</WRAP>
 +
 +You may use other printers that support the ZPL printing language (or EPL if using mSupply 3.2 or earlier), but we cannot provide much support for these models as we have not used them ourselves.
  
 ==== Setup ==== ==== Setup ====
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 ==== Print out the configuration/IP of ZD421 ==== ==== Print out the configuration/IP of ZD421 ====
  
-To print the IP address - and other config details - hold the **Feed** & **Cancel** buttons at the same time until they flash once +Once you have connect your ZD421 to your network you can print the IP address - and other config details - by holding the **FEED** & **CANCEL** buttons at the same time until they flash once 
  
 ==== Change settings of ZD421 via the http interface ==== ==== Change settings of ZD421 via the http interface ====
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 The default credentials are:\\ The default credentials are:\\
-Username : Admin +**Username** : admin \\ 
-Password : 1234+**Password** : 1234
  
 Settings that may need changing in the //View and Modify Printer Settings//: Settings that may need changing in the //View and Modify Printer Settings//:
   * General Setup   * General Setup
-    * **Darkness** (if labels are printing faintly then you can increase this number. However, be careful with this setting as increasing too high can cause the print head to burn out faster) +    * **Darkness** (if labels are printing faintly then you can increase the darkness number. However, be careful with this setting as increasing too high can cause the print head to burn out faster) 
-    * **Print speed** (we have found that for some labels (such as particularly glossy labels) the print speed needs to be reduced so the ink is applied properly+    * **Print speed** (we have found that for some labels (such as those that are particularly glossy or synthetic) the print speed may need to be reduced so the ink is applied properly
   * Media Setup   * Media Setup
     * **Print width** (the print width for mSupply labels is around 690 for a 203dpi printer)     * **Print width** (the print width for mSupply labels is around 690 for a 203dpi printer)
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 If you change any of these settings you then need to click Save Current Configuration for these settings changes to be applied permanently If you change any of these settings you then need to click Save Current Configuration for these settings changes to be applied permanently
  
 +==== Calibrate labels for ZD421 ====
  
 +To calibrate the ZD421 to recognise the label size Press and hold **PAUSE** & **CANCEL** at the same time for two seconds, then release. The printer will feed out a few labels to take measurements.
 +
 +If the calibration does not work as desired then manual adjustment may be required
 +\\
 +\\
 +\\
 \\ \\
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 NOTE: **Defragmentation** is a normal operation of the GK420t printer.  The printer will defragment its memory both after a factory default and when the printer detects that a defragment is required.  When the printer is in this condition, allow it to finish defragmenting. If this warning occurs frequently then refer to the printer user guide as some label format changes could resolve this.  NOTE: **Defragmentation** is a normal operation of the GK420t printer.  The printer will defragment its memory both after a factory default and when the printer detects that a defragment is required.  When the printer is in this condition, allow it to finish defragmenting. If this warning occurs frequently then refer to the printer user guide as some label format changes could resolve this. 
  
-==== Zebra TLP 2844 ==== +===== Zebra TLP 2844 ===== 
-You may have an old label printer : Zebra TLP 2844 +You may have an even old label printer : Zebra TLP 2844 
  
 Click to download the user guide for  {{ :admin:zebra_manual-tlp_2844.pdf |Zebra TLP 2844}} Click to download the user guide for  {{ :admin:zebra_manual-tlp_2844.pdf |Zebra TLP 2844}}
  • Last modified: 2026/02/26 07:20
  • by Nick Pendergrast