JPS62292437A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To improve a printing quality in a dot matrix system, by a method wherein a flying drip formed by being discharged from a recording head is made to reach the surface of an intermediate member, and the intermediate member is brought into contact with a recording member. CONSTITUTION:An ink liquid discharged from a recording head 1 flies as an ink drip and reaches and adheres to an intermediate member 3. By the rotation of a platen 2 in a direction of an arrow, a recording member 5 is transferred in a direction of an arrow A, and also the intermediate member 3 is rotated in a direction of an arrow. Accompanied with the rotation of the intermediate member 3, the ink liquid adhered on the intermediate member 3 is also rotated. Since the intermediate member 3 and the platen 2 are appropriately brought into pressure contact with each other with holding a recording member 5 between then, the ink liquid coming into contact with the recording member 5 is transferred from the intermediate member 3 to the recording member 5 due to the appropriate pressing force.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an inkjet recording device, and more particularly, to a novel inkjet recording device that does not generate unnecessary gaps between dots during recording. It relates to a recording device.

<Prior Art> The appearance of a recording device that can perform quiet and high-speed image recording, is inexpensive, and is easy to maintain and inspect has been awaited for some time.

Among these, the inkjet recording method, which allows printing images to be obtained even on so-called plain paper, is attracting attention. There is also an increasing demand for an inkjet recording device that can print beautiful characters at higher speeds.

<Problems to be Solved by the Invention> When printing characters, the long-known matrix printing system requires a machine that is very expensive and difficult to maintain and inspect. Naturally, if there is no type printing, there is a problem that printing cannot be performed. Therefore, the dot matrix printing method is generally used because the device is inexpensive, high-speed printing is possible, and characters can be printed by freely changing the font etc. as long as the font is changed manually. However, since the characters are composed of a combination of dots, the lines forming the 4.1G characters are not smooth, resulting in a problem that the characters are not as beautiful as those using the matrix type type. In order to solve this problem, it would be possible to print with a smaller screwdriver, but this would create the problem of making the device expensive, and it would be difficult to obtain visually beautiful and good characters. Since it is necessary to construct characters using extremely small dots, the printing time may also be slow.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a simple and inexpensive device for improving the printing quality in the dot matrix method.

Means for Solving the Problems> An inkjet recording apparatus of the present invention for solving the above problems includes an inkjet recording head for ejecting ink liquid, an intermediate member for receiving the ejected ink liquid, The apparatus is characterized by comprising a transfer means for transferring the ink liquid adhering to the intermediate member to the recording member.

In the inkjet recording apparatus of the present invention, the ink liquid is ejected from the recording head, and the formed flying droplets land on the intermediate member, and the intermediate member is brought into contact with the recording member. Transfer and form an image.

<Example> Hereinafter, the present invention will be explained using the drawings.

FIG. 1 is a schematic perspective view for explaining one preferred embodiment of the present invention. In FIG. 1, 1 is a recording head, 2 is a platen, 3 is an intermediate member, 4 is a roller, and 5 is a recording head.
is a recording member.

In FIG. 1, the recording head 1 is a full-line type head having an orifice corresponding to the entire image recording width. The ink liquid ejected from the recording head 1 flies as droplets 114L and lands on and adheres to the intermediate member 3.

As the platen 2 rotates in the direction of the arrow shown in FIG. 1, the recording member 5 is transferred in the direction of the arrow A, and the intermediate member 3 also rotates in the direction of the arrow. As the intermediate member 3 rotates, the ink liquid adhering to the intermediate member 3 also rotates. Since the intermediate member 3 and the platen 2 are in contact with each other with appropriate pressure with the recording member 5 sandwiched between them,
When the ink liquid comes into contact with the recording member 5, the ink liquid is transferred from the intermediate member 3 to the recording member 5 with an appropriate pressing force.

In the present invention, recording is performed in this manner. Therefore, the image (intermediate image) formed with the ink liquid deposited on the intermediate member 3 is generally an image in which the left and right sides are reversed. When obtaining a final image on the transparent recording member 5, it is not necessarily necessary to form the image as a horizontally inverted image.

The material of the portion of the intermediate member 3 to which the ink liquid adheres is selected appropriately depending on the type of ink liquid. As the material, for example, a member having a waste liquid property is preferable. However, the physical relationship between the ink liquid and the intermediate member 3 should be selected depending on the pressing force between the intermediate member 3 and the platen 2, ease of deformation, amount of deformation, transfer speed, amount of ink liquid attached, etc. good. Examples of the intermediate member 3 include silicone, rubber, metal, p, olM.
etc. can be used.

Using FIG. 2, the printing by the present invention (FIG. 2(C)) and the printing by the conventional inkjet recording device (FIG. 2(a)
) and (b)) will be explained.

FIG. 2(a) shows an image when A is printed with 5×7 dots. With conventional printers such as wire tods, images with gaps between dots are recorded, making it difficult to obtain high-quality recordings.

Therefore, printing with smaller dots and higher dot density is shown in FIG. 2(b). Such images are generally achieved by inkjet recording devices capable of high-density printing. It can be seen that the image shown in FIG. 2(b) has fewer gaps between dots than the image shown in FIG. 2(a), resulting in a higher quality image.

However, portions that are originally expressed as wooden lines are also expressed as dots, and clean lines are not formed.

FIG. 2C shows an image according to the invention. In the present invention, for example, after an intermediate image is first formed on an intermediate member using the recording head used to form the image shown in FIG. 2(b), the ink liquid on the intermediate member is In order to transfer the image, the ink liquid formed on the intermediate member collapses and spreads due to the speed to form an image on the recording member. Therefore, according to the present invention, as shown in FIG. 2(c), the ink liquid spreads even into the gaps between the dots and collapses the gaps, forming a single line, which is comparable to printed letters. It was possible to form extremely high-quality images.

When the surface of the intermediate member is made of a liquid-repellent material, the image formed on the intermediate member is formed by dots that are uniform in size due to surface tension, and the ink liquid spreads during transfer. An image is formed as a single line. Furthermore, even when the dots are properly wetted, even if the dots are connected on the clogged intermediate member, the image is formed as a single line by transferring the ink before it is completely dry.

In other words, according to the present invention, there are no gaps between the dots that occur in the past, and the -wood line is reproduced more faithfully as a single line.

FIG. 3 is a schematic perspective view for explaining another embodiment of the wooden invention. In FIG. 3, the parts indicated by the same numbers as in FIG. 1 are the same as in FIG. 1, and therefore their explanation will be omitted. The embodiment shown in FIG. 3 differs from the full-line type recording head shown in FIG. 1 in that it uses a serial scan type recording head 1'. The recording head 1' is arranged on a carriage 6 that moves on a sliding shaft 7.7', and recording is performed by the recording head 1.
This is effected by the left and right movement of ' along the sliding axis 7.7' and by the rotation of the intermediate member 3.

Note that in FIGS. 1 and 3, means for supplying ink to the recording head 1' are not particularly shown; Many supply methods can be used, such as a method in which a tank is housed and the supply pipe is supplied from there, a method in which the recording head 1, 1' itself has a tank, and in particular, a method in which the recording head 1, 1' is supplied without a supply means. However, since the method of supplying the ink liquid is not related to the wood of the present invention, the details will be omitted.

(Effects of the Invention) As is clear from the above description, according to the present invention, while retaining the advantages of the dot matrix inkjet recording method, the problem of gaps between dots that conventionally occurred can be solved with a simple configuration. It is possible to provide an extremely excellent inkjet recording device that can print beautiful characters comparable to printed characters at low cost.

In the present invention, an example has been shown in which the intermediate member is rotated by contact with the recording member by rotation of the platen, but of course, the intermediate member may be rotated by other methods, such as by directly driving the intermediate member by a motor or a belt. You can let me.

Furthermore, the intermediate member of the present invention is not limited to a cylindrical shape, but may be belt-shaped or, depending on the case, sheet-shaped.

Furthermore, it goes without saying that the wooden invention is not limited to the above-mentioned embodiments, and many more modifications can be made without departing from the spirit of the invention.

[Brief explanation of the drawing]

1 and 3 are schematic perspective views for explaining embodiments of the present invention, FIGS. 2(a) and 2(b) are diagrams for explaining conventional printed images, FIG. 2(C) is a diagram for explaining a printed image of the present invention. 1.1'--1 recording head 2--platen 3--
- Intermediate member 4-m-Roller 5--Recording member 6--Kisetsuji 7.7'--Sliding shaft

Claims (1)

[Claims] an inkjet recording head for ejecting ink liquid; an intermediate member for receiving the ejected ink liquid;
An inkjet recording apparatus comprising a transfer means for transferring the ink liquid adhering to the intermediate member to a recording member.