My TEC B-882 Printer does not find the gaps between the labels while printing, therefore it runs out of correct position of printed texts. I have to stop the printer after several prints to adjust new. Can anybody help me in this problem ? many thanks !

The printer knows nothing at all about labels, and isn't looking for any gap. I think you specified the wrong settings in whatever software you're printing the labels from - something in "Page layout" or "Format" or possibly "Printer Settings". You need to tell the computer software exactly what labels you're using, or exactly what your label specifications are.

Perform hard reset of electronics and also re install the driver.

You must use the option send file to printer in the seagull driver not print else it is converted to graphics and sent to the printer.

Clean the dust all arround

Have you checked the position of the sensor?

The printer default is ribbon trans.
if your ribbon is too dark you should modify this option to ribbon no trans

several reasons may cause this problem.
-On Tec printers, the height of the labels must be the most precise possible. You must include the gap height in the command
{D0350,1000,0320|} for la label size 100 mm and 32 mm high and 3 mm interval. If this information is missing, the printer may work correctly for some time and suddenly you'll have your phenomenon.
- You may have a label stuck under the sensor.
- You may need to recallibate your sensors.
- the correct sensor is not selected

Check the size of the label in your codes or driver.
The length must be correct or else you cannot use it correctly.
You must may be recallibrate the sensors

recalibrate the sensors and check your label lengths and gap size

First of all can you print just from the printer ie
Turn on the power while
holding down the [FEED]
key and [PAUSE] key?