A carriage printer includes a printhead; a carriage guide disposed along a carriage scan direction, the carriage guide including a first end and a second end opposite the first end; a carriage for transporting the printhead along the carriage scan direction across the print region, the carriage including a bearing surface that is configured to contact the carriage guide as the carriage transports the printhead; a plurality of carriage guide supports each including a support surface, the plurality of carriage guide supports including a first carriage guide support disposed proximate the first end; a second carriage guide support disposed proximate the second end; and a third carriage guide support disposed between the first carriage guide support and the second carriage guide support; a first biasing force applied in a bias direction proximate the first end; and a second biasing force applied in the bias direction proximate the second end.