JP2011062840A5 - Ink jet recording apparatus and method of correcting ink landing position in ink jet recording apparatus - Google Patents

Description

The present invention relates to an ink jet recording apparatus that performs recording on a recording medium by ejecting ink from the recording head while moving a recording head having an ejection port array in which a plurality of ejection ports are arranged with respect to the recording medium. The present invention also resides in a method for correcting an ink landing position in the ink jet recording apparatus.

Preferably, first, the first landing position information and the second landing position information can be acquired by the landing position information acquisition means. The first landing position information is landing position information of a plurality of inks ejected from the recording head with respect to the recording medium while moving the recording head with respect to the recording medium at a first speed in the first direction. The second landing position information has the same magnitude as the first speed, and the recording medium moves while moving the recording head with respect to the recording medium at a second speed in the second direction opposite to the first direction. Is the landing position information of a plurality of inks ejected from the recording head. Then, the landing deviation amount calculation means, based on these, the parallel in-plane landing deviation amount resulting from only the inclination of the ejection port array on the plane parallel to the opposite recording medium, It is possible to calculate the amount of landing deviation in the intersecting plane caused only by the inclination of the ejection port array in the plane intersecting at right angles to the medium. The landing deviation amount caused only by the inclination of the ejection port array on a plane parallel to the opposed recording medium is the main landing deviation amount. Further, the landing deviation amounts caused only by the inclination of the ejection port array in the plane perpendicular to the opposing recording medium are the first landing deviation amount and the second landing deviation amount. The first landing deviation amount is the landing deviation amount caused only by the inclination of the ejection port array in the plane perpendicular to the opposing recording medium, and is ejected while moving the recording head at the first speed. This is the amount of landing deviation regarding the ink that has been applied. The second landing deviation amount is the landing deviation amount caused only by the inclination of the ejection port array in the plane perpendicular to the opposite recording medium, and the recording head is moved at the second speed. This is the amount of landing deviation related to the discharged ink. Thereafter, the third landing position information can be calculated by the landing position information calculation means based on the main landing deviation amount, the first landing deviation amount, and the second landing deviation amount. The third landing position information is recorded on the recording medium while moving the recording head relative to the recording medium at a third speed in the third direction, which is the same direction as either the first direction or the second direction. The landing position information of a plurality of inks ejected from the ink. Preferably, the correction control means moves the recording head relative to the recording medium at a third speed in the third direction based on the third landing position information so as to suppress ink landing deviation. Then, the ink discharge control is corrected and controlled.

Claims (10)

A recording head having an ejection port array in which a plurality of ejection ports are arranged, wherein the recording head is reciprocally scanned with respect to a recording medium;
Acquisition means for acquiring landing position information of ink ejected from the recording head that is scanned in a predetermined direction at a predetermined speed;
Based on the landing position information acquired by the acquisition means, the amount of landing deviation in the parallel plane caused only by the inclination of the ejection port array on a plane parallel to the surface of the recording medium, and the recording medium A landing deviation amount calculating means for calculating an in-crossing landing deviation amount caused only by the inclination of the discharge port array in a plane perpendicular to the plane;
An ink jet recording apparatus comprising: a correction control unit configured to correct and control ink ejection from the plurality of ejection ports based on the amount of landing deviation in the parallel plane and the amount of landing deviation in the cross plane. The acquisition means acquires first landing position information when the recording head is scanned in the forward direction and second landing position information when the recording head is scanned in the backward direction;
The landing deviation amount calculating means calculates the landing deviation amount in the parallel plane and the landing deviation quantity in the cross plane based on the first landing position information and the second landing position information. The ink jet recording apparatus according to claim 1.   The acquisition means acquires the first landing position information and the second landing position information by causing the recording head to scan at the same forward speed and backward speed. The inkjet recording apparatus according to claim 2.   4. The storage device according to claim 1, further comprising a storage unit that stores the landing deviation amount in the parallel plane and the landing deviation amount in the cross plane calculated by the landing deviation amount calculation unit. 5. The ink jet recording apparatus described.   5. The landing deviation amount calculating unit calculates the landing deviation amount in the cross plane as a first landing deviation amount in the forward direction and a second landing deviation amount in the backward direction. The ink jet recording apparatus according to any one of the above.   6. The correction control unit according to claim 1, wherein the correction control unit corrects and controls ink ejection in each of a forward scan and a backward scan of the recording head. Inkjet recording device. The acquisition means acquires first landing position information when the recording head is scanned at a first speed and second landing position information when the recording head is scanned at a second speed different from the first speed. And
The calculating means is based on the first landing position information and the second landing position information, and the amount of landing deviation in the parallel plane and the amount of landing deviation in the cross plane when the recording head is scanned at the first speed. 7. The inkjet recording apparatus according to claim 1, wherein an in-plane landing deviation amount when the recording head is scanned at the second speed is calculated.   The first speed is based on the cross-plane landing deviation amount when the recording head is scanned at the first speed and the cross-plane landing deviation amount when the recording head is scanned at the second speed. The ink jet recording apparatus according to claim 7, further comprising landing position information calculating means for calculating third landing position information at a third speed different from the second speed. A method for correcting an ink landing position in an ink jet recording apparatus that performs a recording operation by reciprocally scanning a recording head having a discharge port array formed by arranging a plurality of discharge ports,
An acquisition step of acquiring landing position information of ink ejected from the recording head that is scanned in a predetermined direction at a predetermined speed;
Based on the landing position information acquired in the acquisition step, the amount of landing deviation in the parallel plane caused only by the inclination of the ejection port array on a plane parallel to the surface of the recording medium, and the recording medium A landing deviation amount calculating step for calculating an in-cross surface landing deviation amount caused only by the inclination of the discharge port array in a plane perpendicular to the plane;
A correction method comprising: a correction control step for correcting and controlling ink ejection from the recording head based on the parallel-plane landing deviation amount and the cross-plane landing deviation amount. The acquisition step includes scanning the recording head in the forward direction to acquire first landing position information, and scanning the recording head in the backward direction to acquire second landing position information.
In the landing deviation amount calculating step, based on the first landing position information and the second landing position information acquired in the acquiring step, the landing deviation amount in the parallel plane and the landing deviation amount in the cross plane are calculated. The correction method according to claim 9, wherein the correction method is calculated.