Printer, printing method, and recording medium

Abstract

An inkjet printer uses interlaced printing to form raster lines at intervals in the sub-scanning direction. The paper is transported by feed rollers on the upstream side relative to the sub-scanning, and ejection rollers on the downstream side. After the trailing edge of the paper clears the feed rollers, it is printed while being moved in the sub-scan direction by just the ejection rollers. The feed used for the interlaced printing is set at an amount that produces an area between a high-precision area of raster lines formed using the feed rollers to effect sub-scanning, and a low-precision area in which the raster lines are formed using just the ejection rollers to effect sub-scanning. The area thus includes raster lines from both of the other areas. Performing sub-scanning at that feed amount makes the difference in quality between the high-precision area and the low-precision area less noticeable, making it possible to increase the size of the printable area.

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