Patent ID: 7252357
Filing Date: 2007-08-07
Classification: B41J

Abstract:
1. A liquid ejecting apparatus comprising: a liquid ejecting head provided with a plurality of nozzle rows each of which is formed by arranging a plurality of nozzle openings in a row, and capable of ejecting a plurality of types of liquids, a liquid of lightest color being supplied to the nozzle row nearest to an end of the liquid ejecting head with respect to a direction perpendicular to a direction in which the nozzle rows extend, and a liquid of darkest color being supplied to the nozzle row at a middle part of the liquid ejecting head with respect to the direction in which the nozzle rows extend; a carriage mechanism including a carriage carrying the liquid ejecting head and capable of moving the carriage carrying the liquid ejecting head in scanning directions perpendicular to the direction in which the nozzle rows extend; and a controller capable of controlling the liquid ejecting head to eject the liquids through all of the plurality of nozzle rows of the liquid ejecting head both while the liquid ejecting head is being moved for a forward scanning stroke and while the liquid ejecting head is being moved for a backward scanning stroke, wherein the liquids are supplied to the plurality of nozzle rows such that colors of the liquids are symmetrically arranged with respect to the direction perpendicular to the direction in which the nozzle rows extend, wherein the carriage is configured to detachably hold at least two cartridges containing the liquids to be supplied to the plurality of nozzle rows, the carriage being configured such that only one or more cartridges for at least a part of the plurality of nozzle rows in either a right half part or a left half part of the liquid ejecting head can be replaced with other cartridges containing other liquids of similar color classes, respectively, and wherein the other cartridges containing the other liquids of similar color classes are provided with matching projections for preventing a false insertion, and the carriage is provided with matching recesses for receiving the matching projections when the other cartridges containing the other liquids of the similar color classes are mounted on the carriage.