JPS6292849A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To enable the security of a fixed stable print quality, by a method wherein the ink jetted from a jet means is adhered to an intermediate carrier and the ink is evaporated to be condensed, and thereafter, the intermediate carrier is pressed onto a recording medium and the transfer is carried out. CONSTITUTION:The drum 7, the outer skin of which is an intermediate carrier 2, is rotated. The water-color ink consisting of 10% glycerol, 2% dye, and remainder water is jetted from an ink jet head 1 and an ink drop is adhered onto the intermediate carrier 2. When this ink drop deposits on the intermediate carrier 2, it starts to be evaporated and is promoted in evaporation to condensation with a heater 8. The reduced ink is pressed onto the recording medium 10 supported by a lower roller 21 to be transferred. Thereafter, the remainder deposit ink is washed away by water with a brush 9 and dried with a blower 40. Thus, the spreading of ink becomes almost constant regardless of the type of recording media and a stable recording quality can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a new recording device that can be used with an inkjet head.

[Conventional technology]

Please be aware that the ink ejected by a conventional inkjet device 1 is not directly deposited on the recording medium. What are the types of recording media?
For example, due to differences in materials such as paper, metal, and plastic, or even within paper, the way the fixed ink spreads depends on the difference in the quality of the paper. Sorry for the problem.

Therefore, the present invention aims to solve the problem of N points, and its purpose is to provide an inkjet recording device that can ensure stable printing quality regardless of the type of recording medium. .

Poor Means for Solving Problem C] The inkjet recording apparatus of the present invention jets ink from an ink droplet jetting means, causes it to adhere to the intermediate carrier, evaporates the ink, and then compresses the intermediate carrier. By doing so, the deposited ink is transferred to the recording medium.

〔Example〕

f$1 diagram is a principle diagram in an embodiment of the present invention, and 1
Reference numerals denote an inkjet head, a 2-piece intermediate carrier, 3 a rotating body, 4 a shaft, a 5-piece guide, 6 ink droplets, 10 a recording medium, and a 20-piece support. Inkjet head 1 has
)'T is also good for both ink-on-demand type heads and continuous type heads. Also, it may be a -1 nozzle or a multi-nozzle. The two intermediate carriers, which are made of silicone rubber and have a thickness of at least several hundred microns, are preferably made of an elastic material such as rubber. Further, the rotating body may be a three-piece rigid body, or it may be integrated with the intermediate supporting body 2.

Now, ink droplets 6 are ejected from the inkjet head 1 (6 in Fig. 1)), and when they reach the intermediate carrier 2, the second
As shown in (α) in the figure, the intermediate carrier 2 is attached /F30/
''' - If the ink is water-based, it will begin to evaporate.The ingredients of the ink are 10 parts glycerin, 2 parts dye, and 88 parts water.If you use a heater or airflow to help the evaporation, 30 parts of the ink will evaporate. Early on, the ink decreases 31 as shown in Figure 2(b).The intermediate carrier 2 may be warmed in advance.When the ink decrease 1 reaches approximately 90 mm, just in case, the intermediate carrier 2 is heated to 31. As shown in FIG.
Transcribed as 00. When the amount of ink decrease is 90%,
The original person with reduced IC 31 becomes 4 to 6μ, and the recording medium 10
It was confirmed that the spread when pressed was 10μ or less. When the torque on the recording medium is 85μ,
The error is within about 10% and the print quality is negligible.

The diameter of the cut recording dot 100 can be transferred almost unchanged from the reduced ink 31 regardless of the type of recording medium.

The intermediate carrier 2 is cleaned by a cleaner (not shown) and used again.If the surface treatment or the properties of the material itself make it difficult for ink to adhere, the cleaner may be omitted. If the ink is water-based, it is water repellent, and if it is oil-based, is it oil repellent?711'lz Is there any surface treatment? And the aforementioned sex purchase? You can keep it in mind.

Another example in Figure 3? show. The intermediate carrier 2 is made into an outer shell.
The drum 7 is rotated, ink is ejected from the ink jet 1, the ink is evaporated, and then the ink is supported by a lower roller 21 and pressed against the recording medium 10. High-speed recording is possible because seven drums rotate continuously.

Ink evaporation? There is a heater 8 for speeding up the process, and the intermediate phase carrier is washed with water by a brush 9 and dried by a blower 40, so that the surface of the intermediate phase holder is in a constant state. A radiation type heater such as an infrared heater with 8 heaters is preferable, but a convection type heater may also be used as long as you pay attention to the speed of the air flow.An elastic cleaner plate such as a brush with 9 rubber blades may also be used. Also, a heater 8 is installed inside the drum 7.
You can also place .

When heating the ink with a heater to evaporate it, if it is boiled from the inside, the ink cartridge tends to splatter and it becomes difficult to make clean records, so a type that evaporates from the outside is preferable.

In Figure 5, the intermediate carrier 2 is baked onto the drum.
When the intermediate carrier 2 is shaped into an endless tape, it becomes as shown in Fig. 4. Because the tape-shaped intermediate carrier can be made 2 lengths longer,
Although the device is large, it is very easy to control temperature, cleaner placement, surface condition, etc.

The cleaner 22 is a spatula-shaped rigid body that squeezes the intermediate carrier 2 to keep the surface condition of the intermediate carrier 2 constant.

〔Effect of the invention〕

According to the present invention, ink is ejected onto the intermediate carrier 2 from an inkjet head.

If the ink is evaporated and condensed and then pressed against a recording medium, the spread of the ink will be approximately constant regardless of the type of recording medium, and this has the effect that stable specific recording quality can be obtained.

In addition, since the inkjet head 16 does not come close to the recording medium 10, there is less problem of jetting failure due to dirt such as dirt and fluff, and the intermediate carrier 2; This also has the effect of providing accurate recording dot spacing.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1&) and 1(b) are explanatory diagrams of one embodiment of the present invention. Figure 2 is an explanatory diagram of the behavior of ink according to the present invention. Figures 3 and 4 are explanatory diagrams of other embodiments according to the present invention. 1. Ito 2...Intermediate carrier 6...Ink particles 7...Drum 10...Recording medium 30...Discharged ink 31... ...Reduced ink 100 ...Recorded dots or more

Claims (1)

[Claims] An inkjet recording apparatus comprising an ink droplet ejecting means, an intermediate carrier for transferring the droplets ejected from the ink droplet ejecting means onto a recording medium, and a means for evaporating and condensing the ink on the intermediate carrier.