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Three-dimensional inkjet printer

An inkjet printer, three-dimensional technology, applied in typewriters, printing devices, printing and other directions, can solve the problems of uneven printing density and different separation distance, and achieve the effect of reducing uneven printing density

Inactive Publication Date: 2012-05-30
MIMAKI ENG
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Problems solved by technology

[0007] However, since the surface of the three-dimensional medium is curved, the separation distance from the surface of the medium is different between the center and the end of the inkjet head.
Therefore, when using the three-dimensional inkjet printer described in Patent Document 1 to perform printing, the ink jetted from the end of the inkjet head has a difference in the impact position of the ink droplet jetted from the center of the inkjet head. The landing position will shift, so there is a problem that printing density unevenness will occur between passes

Method used

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Embodiment Construction

[0030] Hereinafter, preferred embodiments of the three-dimensional inkjet printer of the present invention will be described in detail with reference to the drawings. In addition, in all drawings, the same code|symbol is attached|subjected to the same or equivalent part.

[0031] figure 1 It is a front view of the three-dimensional inkjet printer of this embodiment. figure 2 yes figure 1 The II-II line sectional view. image 3 yes figure 1 A partial perspective view of the 3D inkjet printer shown. Additionally, in this embodiment, the figure 1 left and right directions ( figure 2 The front and back directions) as the Y-axis direction, the figure 1 front and rear direction ( figure 2 The left and right directions) as the X-axis direction, the figure 1 up and down direction ( figure 2 up and down direction) as the Z-axis direction.

[0032] Such as Figure 1 ~ Figure 3 As shown, the three-dimensional inkjet printer 1 of the present embodiment is for printing on t...

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Abstract

A controller of a three-dimensional inkjet printer superimposes noise on a control signal which drive controls an A drive motor (46) and B drive motor (46), and based on the control signal on which the noise is superimposed, drives the A axis drive motor (45) and B axis drive motor (46). Because of this, a medium M revolves while fluctuating minutely in an A axis direction and rotates while fluctuating minutely in a B axis direction, so that the landing positions of ink droplets ejected from an inkjet head (20) deviate non-uniformly in a main scanning direction and sub-scanning direction overall. Because of this, the deviation of dot positions becomes visually inconspicuous, and unevenness in print density decreases.

Description

technical field [0001] The present invention relates to a three-dimensional inkjet printer (inkjet printer) that ejects ink droplets from an inkjet head to print on the surface of a three-dimensionally shaped medium (media). Background technique [0002] A general inkjet printer prints on the surface of a medium by ejecting ink droplets from an inkjet head onto a flat medium conveyed onto a platen. [0003] However, in recent years, a three-dimensional inkjet printer described in Patent Document 1 has been considered based on the need to print also on three-dimensional media. The three-dimensional inkjet printer described in Patent Document 1 scans a plurality of paths to print an image on the surface of a medium. By changing the inclination angle of the medium holding part holding the three-dimensional shape of the medium relative to the inkjet head to designate the path position, and while the medium holding part is rotated relative to the inkjet head, ink droplets are ej...

Claims

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Application Information

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IPC IPC(8): B41J2/01
CPCB41J2/2139B41J3/4073B41J25/001B41J2/01B41J29/38
Inventor 关和友关亮文小野泽义己小野伸幸
Owner MIMAKI ENG
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