Patent ID: 7316477
Filing Date: 2008-01-08
Classification: B41J

Abstract:
1. An ink jet printer, comprising: a printing medium conveying section for conveying a printing medium, the printing medium conveying section including first and second conveying portions positioned relative to one another in the conveying direction of the printing medium, each of the first and second conveying portions being separated by a predetermined distance, conveying belts in the same conveying portion being separated by a predetermined distance, the conveying belts in the first and second conveying portions being alternately and partially overlappingly positioned relative to a direction orthogonal to the conveying direction: a plurality of first printing heads positioned in respective gaps between the conveying belts of the first conveying portion; a plurality of second printing heads positioned in respective gaps between the conveying belts of the second conveying portion; and a plurality of nozzles arranged to discharge ink on the printing medium; wherein one or the other of the first or second conveying portion has one more conveying belt than the other conveying portion, the middle conveying belt of the conveying portion having an odd number of conveying belts defining a center about which the other conveying belts in the conveying portion having an odd number of belts are alternately arranged and about which the conveying belts in the other conveying portion are alternately arranged.