I have TLP 2844 its printing very poor quality

So you have Zebra LP2844 or TLP 2844?
try diferent driver and print test page
www.seagullscientific.com

check the connection configuration (if is com port, check speed, flow control and others)
Try to install locally with segull drivers (www.seagullscientific.com) if you need, reset to factory defult. print a test label from the driver. if is comunicate, is not printer problem, is connection problem with your software.

To reset the printer to its factory default settings, hold down the FEED button until the error LED has completed its FOURTH set of flashes. You can the reset any changes that you had to make initially when first using the printer.

when submitting the print, un-tick the collate box. Use the properties section to check the speed settings in the driver and try again

You need to use a printer driver or use ZPL commands to print.

see if you can set the printer preferences to borderless printing.

Does the tlp2844 come with a ribbon

You must make sure that the ribbon is compatible with the label you are attempting to print on. It must be a permanent resin. We use the AXR7+ material. Try to avoid using such a high printer head temperature as this will reduce the life of the head.

recalibrate the label length in the printer(hold feed and power up). from memory bar-one uses the label settings from windows, so go into printers and faxes under control panel and correct the label size