Printer

The utility model relates to a printer. According to a bar code printer in the prior art, an adjusting mechanism used for adjusting carbon band tension is not convenient in a practical process. The utility model provides a printer, an adjustment mechanism is provided with an elastic component for automatically correcting the carbon band tension, since the adjustment mechanism is provided with an elastic component for automatically correcting the carbon band tension, in the specific use process, a carbon band goes around an adjusting rod on the adjusting mechanism, an action force is applied to the adjusting rod by the carbon band in the printing process, at this time the elastic component on the adjustment mechanism applies a counterforce on the adjusting rod, thus the size of the tension of the carbon band is appropriate, the adjusting rod can slide on a guide rail, the carbon band can automatically adjust a band out angle through the adjustment mechanism, the band out angle of the printer is appropriate, an