Patent ID: 6305781
Filing Date: 2001-10-23
Classification: B41J

Abstract:
A method of forming an image having a resolution on a medium, the method comprising:moving a print head in a first direction and a second direction opposite the first direction;firing a first drop of a first fluid at a first velocity while the print head is moving in the first direction to form a first dot on the medium;firing a first drop of a second fluid at a second velocity different from the first velocity while the print head is moving in the first direction to form a second dot on the medium;firing a second drop of the second fluid at the second velocity while the print head is moving in the second direction to form a third dot on the medium, the third dot substantially aligned with the second dot in a direction perpendicular to the first direction;firing a second drop of the first fluid at the first velocity while the print head is moving in the second direction to form a fourth dot on the medium;wherein the drops of the first and second fluids are fired from particular nozzles of a row of nozzles in the print head, the particular nozzles selectively sequentially fired in strokes, each stroke beginning at one end of the row and ending at the other end of the row; andrelatively adjusting the firing between the first and second drops of the first fluid by at least one stroke such that a distance between the first dot and the fourth dot is less than or equal to a predetermined amount.