Hisense HM628N, Руководство пользователя

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types of paper rolls may affect the printing effect and the life of the print head;

If the paper roll is contaminated by chemicals or oil, the contaminated part of the
paper roll may fade or the printing effect is not clear;

Do not use sharp objects to scratch the thermal layer of the paper, which may make
the printing effect unclear;

When the temperature exceeds 70°C, the thermal layer of the paper will fade.
Therefore, the use or storage of paper rolls should avoid high temperature, high hu-
midity, strong light, etc;
 Do not use thermal paper that has been stored for too long.
2. Printer maintenance
①
Print head cleaning
The print head should be cleaned when one of the following conditions occurs in the
printing unit:
 Printing is not clear;

A certain vertical column of the printed page is not clear;

Paper feeding and unloading are noisy.
The steps for cleaning the print head are as follows:
a. Turn off the power of the printing unit, turn the opening wrench over, and pull out
the rubber roller;
b. If you have just finished printing, wait for the print head to cool down completely;
c. Use an alcohol cotton ball (should be wrung out) to wipe off the dust, stains and pa-
per scraps on the surface of the heating body of the printing hair;
d. After the alcohol has completely evaporated, close the printer cover.
②
Printing rubber roller cleaning
When one of the following situations occurs in the printing unit, the printing rubber
roller should be cleaned:
 Printing is not clear;

A certain vertical column of the printed page is not clear;

Paper feeding and unloading are noisy.
The cleaning steps of the printing rubber roller are as follows:
a. Turn off the power of the printing unit, turn the opening wrench over, and pull out
the rubber roller;
b. If you have just finished printing, wait for the print head to cool down completely;
c. Use an alcohol cotton ball (should be wrung out) to wipe off the dust, stains and pa-
per scraps on the surface of the printing rubber roller;
d. After the alcohol has completely evaporated, close the printer cover.
③ Precautions for daily maintenance
 Make sure that the power supply is turned off during routine maintenance of the
printing unit;
 Do not touch the surface of the print head with your hands and metal objects, and do
not use tweezers or other tools to scratch the print head, printing rubber roller and
sensor surface;
 Do not use organic solvents such as gasoline and acetone;
 After the cleaning solution is completely evaporated, turn on the power to continue
printing;
 The maintenance period is recommended not to be longer than 1 month.