PRINTING DEVICE, PRINTING METHOD, AND PROGRAM
First Claim
Patent Images
1. A printing device comprising:
- pigment ink nozzles arranged to discharge pigment ink to form pigment ink dots on a print medium;
dye ink nozzles arranged to discharge dye ink to form dye ink dots on a print medium; and
a nozzle control unit arranged to control sizes of the pigment ink dots and the dye ink dots by controlling ink quantities discharged from the pigment ink nozzles and the dye ink nozzles, the nozzle control unit being arranged to performa first printing process for forming pigment ink dot rows and dye ink dot rows adjacent to each other by causing the pigment ink nozzles to form the pigment ink dots and then causing the dye ink nozzles to form the dye ink dots adjacent to the pigment ink dots, anda second printing process for forming the dye ink dot rows and the pigment ink dot rows adjacent to each other by causing the dye ink nozzles to form the dye ink dots and then causing the pigment ink nozzles to form the pigment ink dots adjacent to the dye ink dots,the nozzle control unit being arranged to form a printed image including first and second printed image areas formed respectively by the first and second printing processes,when the nozzle control unit forms a first type of ink dots selected in advance from between two types of ink dots including the pigment ink dots and the dye ink dots in the first or second printing process, the nozzle control unit being arranged to perform a dot size adjustment process in whichthe size of the first type of ink dots is not varied when the size of a second type of ink dots adjacent to the first type of ink dots is smaller than a preset size, andthe size of the first type of ink dots is varied when the size of the second type of ink dots is equal to or greater than the preset size.
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Abstract
A printing device performs band printing during two-way printing, wherein the band printing uses black pigment ink and dye ink. In this printing device, in an advancing printed area for which a print head moves in an advancing direction, pigment ink dots are formed first and dye ink dots are formed second. In a retreating printed area for which the print head moves in a retreating direction, dye ink dots are formed first and pigment ink dots are formed second.
6 Citations
6 Claims
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1. A printing device comprising:
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pigment ink nozzles arranged to discharge pigment ink to form pigment ink dots on a print medium; dye ink nozzles arranged to discharge dye ink to form dye ink dots on a print medium; and a nozzle control unit arranged to control sizes of the pigment ink dots and the dye ink dots by controlling ink quantities discharged from the pigment ink nozzles and the dye ink nozzles, the nozzle control unit being arranged to perform a first printing process for forming pigment ink dot rows and dye ink dot rows adjacent to each other by causing the pigment ink nozzles to form the pigment ink dots and then causing the dye ink nozzles to form the dye ink dots adjacent to the pigment ink dots, and a second printing process for forming the dye ink dot rows and the pigment ink dot rows adjacent to each other by causing the dye ink nozzles to form the dye ink dots and then causing the pigment ink nozzles to form the pigment ink dots adjacent to the dye ink dots, the nozzle control unit being arranged to form a printed image including first and second printed image areas formed respectively by the first and second printing processes, when the nozzle control unit forms a first type of ink dots selected in advance from between two types of ink dots including the pigment ink dots and the dye ink dots in the first or second printing process, the nozzle control unit being arranged to perform a dot size adjustment process in which the size of the first type of ink dots is not varied when the size of a second type of ink dots adjacent to the first type of ink dots is smaller than a preset size, and the size of the first type of ink dots is varied when the size of the second type of ink dots is equal to or greater than the preset size. - View Dependent Claims (2, 3, 4)
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5. A printing method performed by a printing device having dye ink nozzles for discharging dye ink and pigment ink nozzles for discharging pigment ink, the printing method comprising:
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forming a first printed image area including pigment ink dot rows and dye ink dot rows adjacent to each other by causing the pigment ink nozzles to form pigment ink dots and then causing the dye ink nozzles to form dye ink dots adjacent to the pigment ink dots; forming a second printed image area including dye ink dot rows and pigment ink dot rows adjacent to each other by causing the dye ink nozzles to form the dye ink dots and then causing the pigment ink nozzles to form the pigment ink dots adjacent to the dye ink dots; repeating the forming of the first printed image area and the forming of the second printed image area to form a printed image including the first printed image area and the second printed image area; and when a first type of ink dots selected in advance from between two types of ink dots including the pigment ink dots and the dye ink dots are formed during the forming of the first printed image area or the forming of the second printed image area, performing a dot size adjustment process in which the size of the first type of ink dots is not varied when the size of a second type of ink dots adjacent to the first type of ink dots is smaller than a preset size, and the size of the first type of ink dots is varied when the size of the second type of ink dots is equal to or greater than the preset size.
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6. A non-transitory computer readable medium having stored thereon a program which is executable by a computer to cause a printing device to perform printing, the printing device including pigment ink nozzles arranged to discharge pigment ink to form pigment ink dots on a print medium and dye ink nozzles arranged to discharge dye ink to form dye ink dots on a print medium, the program controls the computer to execute function of:
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controlling sizes of the pigment ink dots and the dye ink dots by controlling ink quantities discharged from the pigment ink nozzles and the dye ink nozzles; performing a first printing process for forming pigment ink dot rows and dye ink dot rows adjacent to each other by causing the pigment ink nozzles to form the pigment ink dots and then causing the dye ink nozzles to form the dye ink dots adjacent to the pigment ink dots, and a second printing process for forming the dye ink dot rows and the pigment ink dot rows adjacent to each other by causing the dye ink nozzles to form the dye ink dots and then causing the pigment ink nozzles to form the pigment ink dots adjacent to the dye ink dots; forming a printed image including first and second printed image areas formed respectively by the first and second printing processes; and when a first type of ink dots selected in advance from between two types of ink dots including the pigment ink dots and the dye ink dots are formed in the first or second printing process, performing a dot size adjustment process in which the size of the first type of ink dots is not varied when the size of a second type of ink dots adjacent to the first type of ink dots is smaller than a preset size, and the size of the first type of ink dots is varied when the size of the second type of ink dots is equal to or greater than the preset size.
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Specification