I am using a zebra RW420 in an android project and I am coding and I find that even when simply testing the printer using the ZSDK Developer Demos the printer is printing lots of extra paper when it is issued a print command. In this case I am testing out the signature capture and print demo. I do find that if I connect it to the computer and print a label created using Zebra Designer it prints the label properly with no extra paper (in fact i wouldn't mind a couple of millimeters extra in that case).
If any one knows how to save some trees here that would be great!
The code in question is:
connection.open();
ZebraPrinter printer = ZebraPrinterFactory.getInstance(connection);
GraphicsUtil g = printer.getGraphicsUtil();
Bitmap image = signatureArea.getBitmap();
g.printImage(image, 0, 0, image.getWidth(), image.getHeight(), false);
connection.close();
Do you have the keyword "FORM" in your CPCL label? It's usually before PRINT
This tells the printer to form feed after printing to the top-of-form setting the printer is configured to. To disable it, you can remove the FORM keyword from your format if you don't need it, or you can set the top-of-form to 0.
! U1 getvar "media.tof"
will show you what your top-of-form is currently set to
! U1 setvar "media.tof" "0"
will set it to 0, so that the FORM will feed 0 dots