Patent ID: 7475958
Filing Date: 2009-01-13
Classification: B41J

Abstract:
1. An image forming device comprising a carriage on which a printing head is carried, the printing head having a nozzle sequence in which a plurality of nozzles each of which discharges a droplet of printing liquid are arrayed, the image forming device performing a main scanning of the carriage to a sheet and feeding the sheet intermittently in a direction perpendicular to a main scanning direction, so that an image is formed on the sheet, wherein, when a continuous printing of images to a plurality of sheets is performed and a quality level of an image formed on a following sheet is the same as a quality level of an image formed on a preceding sheet, the image formation to both a rear edge of the preceding sheet and a front edge of the following sheet is performed by a same main scanning of the carriage, and wherein, when the quality level of the image formed on the following sheet differs from the quality level of the image formed on the preceding sheet, the image formation to the following sheet is performed after the image formation to the rear edge of the preceding sheet is performed completely.