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Ink-jet recording apparatus

An inkjet recording and ink technology, applied in printing, etc., can solve problems such as difficult mixing, uneven color tone of recording media, unstable setting, etc., and achieve good printing quality, easy maintenance and excellent stirring performance

Inactive Publication Date: 2011-04-27
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pigment-based ink is left in the container for storing the ink for a long time, the pigmentation as one of the ink components precipitates, and if the ink is supplied to the nozzle and recovered while the pigmentation is maintained, and such a cycle is performed, The following problems will occur: clogging in the nozzles that eject ink in the circulation path, uneven color tone printed on the recording medium, and difficulty in recognizing the recorded characters as characters
But, under the situation that wants to keep the pigment type ink of larger capacity, in the ink container of the cylindrical shape that existing pigment type ink is used, if enlarge container in lateral width direction, then the stirring member 47 The size is relatively small relative to the inner diameter of the container, so it is difficult to stir sufficiently
Also, when increasing the container in the height direction, there is an issue of unstable settings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] figure 1 It is a perspective view showing the inkjet recording device 100 . In the inkjet recording device 100 , a main body 1 having an operation display unit 3 on the outside and a print head 2 are provided, and the main body 1 and the print head 2 are connected by a conduit 4 .

[0061] Here, the principle of operation of the inkjet recording device 100 will be described. Such as figure 2As shown, the ink in the ink container 18 is sucked and pressurized by the pump 25 to become an ink column 7 and ejected from the nozzle 8 . The nozzle 8 is provided with an electrostrictive element 9 that vibrates the ink at a predetermined frequency to atomize the ink column 7 ejected from the nozzle 8 . The number of ink particles 10 thus generated is determined by the frequency of the excitation voltage applied to the electrostrictive element 9 , and is the same number as the frequency. The ink particles 10 are charged by applying a voltage of a magnitude corresponding to th...

Embodiment 2

[0089] Figure 12 , Figure 13 It is an explanatory drawing of the second embodiment of the present invention. Figure 12 Representing the plan view of the ink container of the 2nd embodiment, Figure 13Represents a longitudinal section view.

[0090] First, the structure of the ink container of this embodiment will be described. The ink container 61 of this embodiment has a circular bottom surface 61e, and includes: a lower side wall 61d extending upward from the peripheral edge of the bottom surface 61e; and an inclined portion 61c extending obliquely outward from the peripheral edge of the lower side wall 61d. the upper side wall 61a extending upward from the end of the inclined portion 61c; and the rib 61d extending vertically downward from the vicinity of the connection between the inclined portion 61c and the upper side wall 61a. The rib 61d may be formed to have an inclination toward the outer side of the upper side wall 61a. The part surrounded by the upper side w...

Embodiment 3

[0099] Figure 14 , Figure 15 It is an explanatory drawing of the third embodiment of the present invention. Figure 14 Representing the plan view of the ink container of the 3rd embodiment, Figure 15 Represents a longitudinal section view.

[0100] First, the structure of the ink container of this embodiment will be described. The ink container 71 of this embodiment has a circular bottom surface 71e, including: a first inclined portion 71b extending obliquely outward from the peripheral edge of the bottom surface 71e; The second inclined portion 71c extending obliquely; the side wall 71a extending upward from the end of the second inclined portion 71c; The rib 71d in this embodiment is provided only on one side of the container, and it may also have an inclination towards the outside of the side wall 71a. The portion surrounded by the side walls 71 a has a rectangular parallelepiped shape, and the pigment-based ink 72 is accommodated in the ink tank 71 .

[0101] In a...

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PUM

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Abstract

The invention discloses an ink-jet recording apparatus comprising an ink container which is characterized by excellent ink agitation property and high capacity, and can be stably disposed independent of the apparatus. The ink-jet recording apparatus comprises an ink container for containing ink to be printed on print target; a jet nozzle which is connected to the ink container and sprays ink; a charged electrode which enables ink to be sprayed from the jet nozzle and charges the ink to be printed; a turning electrode for turning the ink charged by the charged electrode; a groove for recyclingink not used for printing; an agitating mechanism for agitating ink contained in the ink container. The ink-jet recording apparatus is characterized that the bottom of the ink container is configuredin such a manner that ink adjacent to the bottom can convect along the circumference of the rim of the said bottom while affected by the agitating mechanism, and the ink container is provided with aninclination portion which extends from the side wall of the ink container to the said bottom.

Description

technical field [0001] The present invention relates to an inkjet recording device that continuously ejects ink particles. Background technique [0002] The inkjet recording device is a mechanism that circulates in the following manner: the ink is sucked by the pump from the ink container, the ink is supplied to the nozzle through the ink filter and the pressure regulating valve for adjusting the ink pressure, and the ink is ejected from the nozzle. Vibration is applied to the ink to generate ink particles (particles), and by charging and turning the ink particles, the ink particles reach the recording medium for recording. In addition, the ink from the nozzles is continuously ejected, and the ink particles not used for recording are recovered from the grooves, returned to the ink container by the force of the pump, and supplied to the nozzles again. [0003] When the surface of the recording medium is printed on a recording medium with a darker color such as black, it is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J2/175
Inventor 有马崇博长岭俊秀松下雄彦
Owner HITACHI IND EQUIP SYST CO LTD