The utility model relates to the technical field of
thermal printing equipment, in particular to a printing roller for a thermal printer, which comprises a printing head, a printing roller and a
label, the
label passes between the printing head and the printing roller, one surface of the
label close to the printing roller is provided with a bonding layer, two rubber rings with high
hardness are fixedly mounted on the outer side of the printing roller, and the printing roller is fixedly mounted on the printing head. And a cylindrical
silica gel foaming roller with low
hardness is fixedly mounted between the two rubber rings with high
hardness. According to the utility model, the rubber rings with high hardness and the cylindrical
silica gel foaming roller with low hardness are arranged, the rubber rings with high hardness at the two ends are made of a high-hardness
silicon rubber material, so that the deformation of the roller is prevented by virtue of strong force, and meanwhile, the cylindrical
silica gel foaming roller with low hardness in the center is made of a foaming material, so that the service life of the roller is prolonged. The hardness is relatively soft, the applied force is reduced, and the contact area between deformation and the label is reduced, so that the label is difficult to roll on the printing roller, and the phenomenon that the label is not discharged from the interior of the printer is avoided.