Printer and control method therefor

摘要

The control unit of a printer feeds paper P from a paper supply path 12 to a main conveyance path, drives a paper feed roller pair, conveys the paper in a first direction through the main conveyance path, and prints on the first side of the paper. After printing on the first side ends, the conveyance direction changes from the first direction to the opposite second direction, and the medium is back-fed to a looped inverting conveyance path at a faster conveyance speed than the conveyance speed when printing. First and second conveyance rollers are then driven to convey the print medium at high speed through the inverting conveyance path, thereby inverting the front and back and returning the medium to the main conveyance path for printing the second side.

主权项

1. A control method of a printer, comprising:
a first step of conveying a sheet medium delivered to a media conveyance path in a first direction, and printing on a first side of the medium by a printhead; a second step of conveying the printed medium in a second direction in the reverse of the first direction from the media conveyance path to a loop-shaped inverting conveyance path; and a third step of conveying the medium through the inverting conveyance path and feeding the medium in the first direction from the inverting conveyance path to the media conveyance path after inverting the front and back; wherein the medium is conveyed in the second direction in the second step at a higher conveyance speed than a conveyance speed when conveying the medium in the first direction in the first step.