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MUNBYN Help Center

MUNBYN Help Center

Unboxing and Driver Installation video, http://munbyn.biz/unboxing

Sample 4x6 shipping label, http://munbyn.biz/label

 Mac Driver

ITPP941 requires OS X 10.9 or newer.

1. Please find the USB flash in the package, the driver is inside,

Or download the driver from here: https://munbyn.biz/941macd

*Tips: If there is an error the .pkg file cant be opened because it is from an unidentified developer when installing the driver, please follow the steps below to allow the macOS to finish the installation


(1) Go to the Security & privacy


(2) Select to allow the file in the option pointed in this pic.


2. When you open the download file, you should see the screen shown below. It is highly recommended that you open the installation guide so you can follow along.
Please double-click on the pkg installer to begin. Follow the installation steps until you receive the "Installation was successful" message shown below.


You may wish to print a Sample 4 x 6 Shipping LabelIn the print dialogue, please be sure to select your "Paper Size" appropriately (for example 4 x 6).and then save the settings in the Presets option.


After the installation is complete, if you cannot find the printer in your Mac, please follow the steps below.

3. Open your Mac's "Settings" and click on "Printers and Scanners."


4. On the next window, press "+"


5. Click on Label Printer, and then choose "Select Software" in the drop-down menu.


6. Please search/find "Munbyn Label Printer" and click OK.


7. Click on "Add" 


Then the printer will display in your Mac.


Windows Driver

1. Please find the USB flash in the package, the driver is inside,

Or download the driver from here: https://munbyn.biz/941wind

2. After the download is complete, directly double-click to open, Please make sure the printer is turned on and connected to Windows via USB cable.


3. After clicking install, the driver is automatically installed on windows.


If Munbyn does not appear on your computer, please restart the printer and windows.

Why the position of the print content is offset when printing continuously?

Please confirm the black guide has fixed the label.


There are two main causes for ITPP941 skipping labels or continuously feeding


(1) ITPP941 didn’t learn your label size [Most Common Reason]


✔Pull out the USB cable and restart the printer; 

✔ Press FEED button and hold on;

✔ Release your finger when you hear five "Di" sounds.

✔Then, you will hear another long "Di" sound, which means the printer was reset.

Then, we can set the printer to learn label size.

✔ Turn on the printer;

✔Press FEED button and hold on;

✔ Release your finger when you hear one "Di" sound.

✔ Then, the printer will "know" the label size and will not print blank labels or incomplete. Please re-connect the USB cable to ITPP941 and try your print.



(2) Your operating system is sending a longer/ shorter label to ITPP941. Please ensure you have the correct label size:


For Windows

Go to Control Panel -> Devices and Printers -> Right Click on ‘Munbyn ITPP941’

-> Printer Preferences -> Advanced Button.

Mostly, we choose 4 x 6 labels or 100mm x 150mm size. 


For Mac

Please select 100mm x 150mm or 4" x 6" size during the print prompt window.



Note: The application you are using (i.e. Adobe Reader) could be over-riding your driver label setting and sending the print in a larger / smaller size to ITPP941. Look for "Page Setup" or "Paper Size" in the print prompt and ensure it was set to the size you want.

The most likely reason is that your label is not properly formatted for 4 x 6 label printing. ITPP941 prints exactly what you see on your screen in the same orientation. So if the label looks side-ways on your screen or if it has a lot of white space around the label, ITPP941 will print it side-ways and with the same amount of white space.

If your label is 4 x 6 but just provided sideways, you can setup ITPP941 to rotate it for you automatically:

On Mac

During the print prompt, select your label size under Presets, then navigate to Printer Features -> Page Options and Select 90 under "Rotate."



Why the label is getting stuck or half-printed?


ITPP941 prints by heating your label in very specific areas.

If label is getting stuck (usually when printing contents really dark like barcode or a thick straight line), the possible reason is the print density being set too high, which causes the label to get too hot and get stuck to the print head. Various labels respond to the same level of heat differently.


Please set the Speed to "4" and density to "2" and print again. If your label is too light now, please increase the density by 1.


(1) On PC:


Go to Control Panel > Devices and Printers > Right click on Munbyn ITPP941 > Printer Preferences > Page Setup

Adjust Speed / Density and click on OK.


(2) On Mac:

Access these settings directly from the print menu as shown below.




Why the printer’s red light is flashing?


Red light is an indication that ITPP941 has a problem with your label. Most likely, ITPP941 needs to re-learn your label.


✔Pull out the USB cable and restart the printer; Press FEED button and hold on;

Release your finger when you hear five "Di" sound.

Then, you will hear another one long "Di" sound, which means the printer was reset.Then, we can set the printer to learn label size.

Turn on the printer;

Press FEED button and hold on;

Release your finger when you hear one "Di" sound.

Then, the printer will "know" the label size and will not print blank label or incompletely. 

Please re-connect the USB cable to ITPP941 and try your print.

Why the printer print extra blank labels after printing?


Please check if the page size set in the driver match your label size.

Windows: Go to the ‘printer preferences’ ---> ‘advanced’ ---> ‘paper size’, select the correct size for the printer(If you are using 4x6 paper, please select the 100*150mm)



MacOS: If you print a 4x6 size page. In the print dialogue, please be sure to select your "Paper Size" appropriately (for example 4 x 6).

2.The size of loaded paper is smaller than the label file’s(For example, when printing the 100*190mm file but using the 100*150mm size paper).

For this situation, you can adjust the scales, margins in the page setup in the using browser.

Chrome: set the scales and margin in printing preview


2.The size of loaded paper is smaller than the label file’s(For example, when printing the 100*190mm file but using the 100*150mm size paper).

For this situation, you can adjust the scales, margins in the page setup in the using browser.

Chrome: set the scales and margin in printing preview



2.IE browser: click the ‘file’ ---> ‘page setup’ and adjust the margin