JP2014172389A5

JP2014172389A5 -

Info

Publication number: JP2014172389A5
Application number: JP2013050073A
Authority: JP
Filing date: 2013-03-13
Publication date: 2016-03-31
Anticipated expiration: 2033-03-13

Claims

A printing apparatus capable of recording dots of different sizes on a print medium,
A print head comprising a plurality of nozzles capable of recording at least a first dot and a second dot larger than the first dot by discharging liquid;
A transport mechanism that transports the print medium relative to the print head at least at a first speed or a second speed higher than the first speed;
A print control unit that controls the print head and the transport mechanism and records the first dot and the second dot on the print medium in accordance with a gradation value of given image data. ,
The print control unit
An image is printed in a first mode on the print medium that is transported relatively at the first speed, and a second mode is printed on the print medium that is transported relatively at the second speed. Print the image with
When printing is performed in the second mode, when the second dot is printed at a gradation value higher than the gradation value at which the second dot is recorded when printing is performed in the first mode. Recorded,
Printing device.

The printing apparatus according to claim 1,
When printing is performed in the second mode, the maximum number of the first dots recorded per unit area is larger than that when printing is performed in the first mode.

The printing apparatus according to claim 1 or 2, wherein
When printing is performed in the second mode, printing is performed in the first mode at an intermediate gradation value in a range of gradation values expressed using the first dot and the second dot. A printing apparatus in which a larger number of the first dots are recorded than in the case of performing.

A printing apparatus according to any one of claims 1 to 3, wherein
The nozzle can further record a third dot that is larger than the first dot and smaller than the second dot by discharging a liquid;
The print control unit
Controlling the print head and the transport mechanism, and recording the first dot, the second dot, and the third dot on the print medium according to the gradation value of the image data;
When printing is performed in the second mode, when the third dot is printed at a gradation value higher than the gradation value at which the third dot is recorded when printing is performed in the first mode, The printing device to be recorded.

The printing apparatus according to claim 4,
When printing is performed in the second mode, the maximum number of the third dots recorded per unit area is larger than that when printing is performed in the first mode.

A printing apparatus according to any one of claims 1 to 5, comprising:
In the second mode, the printing control unit records the dots using a larger number of nozzles than that used in the first mode for a predetermined range of the printing medium.

A printing apparatus according to any one of claims 1 to 6, comprising:
The printing apparatus, wherein the plurality of nozzles that eject liquid are arranged in the print head along a direction that intersects a conveyance direction of the print medium.

A printing method capable of recording dots of different sizes on a print medium,
For a print head comprising a plurality of nozzles capable of recording at least a first dot and a second dot larger than the first dot by discharging liquid, the print medium is at least at a first speed or Conveying relatively at a second speed that is faster than the first speed;
A control mechanism that controls the print head and a transport mechanism that relatively transports the print medium at the first speed or the second speed that is faster than the first speed. Recording the first dot and the second dot on the print medium according to the gradation value of the image data obtained,
In the step of performing the printing,
An image is printed in a first mode on the print medium that is transported relatively at the first speed, and a second mode is printed on the print medium that is transported relatively at the second speed. Print the image with
When printing is performed in the second mode, the second dots are recorded at a gradation value higher than the gradation value at which the second dots are recorded when printing is performed in the first mode. , Printing method.