DOUBLE SIDED PRINTER AND PAPER FEEDING CONTROL METHOD THEREOF

摘要

Disclosed are a double sided printer and a paper feeding control method thereof. The double sided printer comprises a first printing assembly (1) arranged on a printer carriage, a second printing assembly (2) located downstream of the first printing assembly along the conveying direction of a printing medium (P), and a buffering mechanism (3) of the printing medium arranged between the first printing assembly and the second printing assembly, wherein the buffering mechanism comprises a buffering shaft (31) and elastic elements (32), both ends of the buffering shaft being supported in a guiding groove (201) at both sides of a passage for conveying the printing medium, the buffering shaft tending to move in order to deflect away from the passage for conveying the printing medium in the guiding groove, and the elastic elements being located at the two ends of the buffering shaft, one end of each of the elastic elements being connected to the printer carriage and the other end thereof being connected to the buffering shaft respectively. The buffering mechanism enables the printing medium between the two printing assemblies to remain in a suitable state of tension all the time, preventing the problem of the printing medium between the two printing assemblies being excessively tense or relaxed.