1. Correct operation: the user's operation is correct, the bar code printer has great effect on the length of service life, such as temperature, pressure and so on machine setting and application. 2. To carry out the maintenance: whether in accordance with the conditions to carry out the general maintenance, use and maintenance actions are correct ( Contains the use of instruments and methods of the maintenance) Set-up, and regular professional maintenance is complete, the above points are affecting the service life of the bar code printer. 3. Environmental factors: bar code printers, please shut off the power when not in use, can make the machine keep in low temperature, best can be apart when switching power supply 5 ~ 10 minutes, choose as far as possible put in a clean environment. If can meet the above conditions, the life of the bar code printer for at least 5%. Bar code printing head is the most fragile components in bar code printer. It is a loss of goods like cars, will eventually damage, constantly pay attention to maintenance, however, can prolong the life of the bar code printing head. Bar code printing head predictive maintenance to play the best effect, when each with a roll of ribbon or a roll of thermal paper to clean a barcode printing head. Pay attention to when cleaning the print head bar code need to take off the ring from cuts barcode printing head, using grounding metal belt or anti-static pad to prevent electrostatic damage barcode printing head. Usable cotton swab soaked in 70% alcohol, first close the printer power supply and open the bar code printing head, brush with a small amount of cotton in the mechanical parts of the printer, or gently blowing dust ( Such as: roller, paper/ribbon sensor and barcode printing head) 。 Don't use any hard metal or worn tool ( Such as a screwdriver) To grinding bar code printing head of pollutants. With alcohol cotton bar pressure on barcode printing head to wipe from top to bottom out, then the rotating rollers, use it to turn while brush, cotton stick dirty don't use. Bar code printers, barcode printing head early damage factors scratches - label/ribbon will move through the long-term of barcode printing head wear ceramic coating protective layer, make the bar code printing head (needle Point) Exposure and ultimately damaged. In order to avoid the scratch often clean the barcode print head back and use the high quality for a smooth layer with thermal transfer ribbon in order to reduce friction between membrane; To minimize the barcode printing head pressure and print the temperature; Ensure the ribbon width wider than label in order to prevent the exposure of barcode printing head is label scratch. Ribbon layer caused by dirty bar code printing head back after thermal paper and thermal transfer ribbon pollution will need to set value of the high temperature and high pressure, high speed high. Pollutant accumulation on the bar code printing head needle heat transfer obstacle and affect the quality of printing image. Pollution increases gradually decreased print quality and print looks matt or damage to the needle. Pollutants and make wet cotton swab to clean. In order to avoid the ribbon back layer caused by the dirty, need to use is back with a layer of protection of thermal transfer ribbon, the ribbon needs to consult non-viscous ribbon, both electrostatic and lubrication. Often do bar code printer maintenance. Use protection bar code printers, bar code printing head film can be quickly and easily remove the bar code printing head waste accumulation.