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凹版印刷的几种表现方式?

  凹版印刷的定义,是指下面的图形板部分的图形方式印刷,凹版印刷板和凸版印刷偏移量是不同的,凸版印刷和点密度的大小来表示图像的水平,和凹印板是依赖于净孔深度或开放的面积大小来表示图像水平。

  The definition of gravure printing refers to the following graphic way of printing, gravure printing and relief printing offset is different, relief printing and dot density to represent the level of the image, and gravure printing depends on the depth of the net hole or the size of the open area to represent the level of the image.

  网孔是指凹印油墨的贮存坑,根据油墨的量需要改变凹印坑的开度和深度,凹印部分的孔体积越大,油墨的量就越多,印品上的油墨层就越厚。而印刷部分的网孔体积较小,油墨较少,转移到油墨层较薄。墨层较厚的部位,就是图像较暗、墨层较薄、较亮,由于凹版墨层一般较厚,因此,印刷图像一般都有轻微的凸出感。

  Mesh is the storage pit of gravure printing ink. The opening and depth of gravure printing pit should be changed according to the amount of ink. The bigger the hole volume of gravure printing part is, the more the amount of ink is, and the thicker the ink layer on the printing product is. The mesh size of the printing part is smaller and the ink is less, so the transfer to the ink layer is thinner. The thicker part of the ink layer is that the image is darker, the ink layer is thinner and brighter. Because the gravure ink layer is generally thicker, the printing image generally has a slight protrusion.

  在凸版和平板上,网络线是不可见的,当相邻网格内的网格点面积比达到100%时,这些点就会连接在一起。不过,凹版也有差别,虽然网格线不可见,但其实有一堵网墙。

  In relief and tablet, the network line is invisible. When the area ratio of grid points in adjacent grids reaches 100%, these points will be connected together. However, gravure is also different, although the grid line is invisible, but there is actually a wall.

  筛网壁是用来分离孔和支撑凹版刮刀基体的。网版墙在凹版印刷中的作用主要体现在两个方面:一是支撑凹版印刷机的刮墨刀,防止其刮墨时应保留在孔内;二是防止油墨在网孔流动的过程中,由于网孔壁的存在,在凹版印刷中通常没有面积率达100%的网点面积。

  The screen wall is used to separate holes and support the gravure scraper base. The role of screen wall in gravure printing is mainly embodied in two aspects: one is to support the scraper of gravure printing press to prevent it from scratching in the hole; the other is to prevent ink from flowing through the hole, because of the existence of the screen wall, there is usually no dot area of 100% in gravure printing.

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  凹版印版上的孔有三个可变的自由度;网孔凹进深度,网孔有三个开口面积和网孔开口形状,在制作印版时,可以改变网孔的三个自由度来改变油墨的贮存量,以再现文字和文字深度的变化。

  The holes on gravure plate have three variable degrees of freedom; the depth of mesh concave, the area of mesh opening and the shape of mesh opening. In making gravure plate, the three degrees of freedom of mesh can be changed to change the storage of ink, so as to reproduce the changes of text and text depth.

  凹版印版通常有四种类型的凹版网版:

  Gravure plates usually have four types of gravure screen plates:

  1净坑凹深度变化,在相同的开放区域,这是典型的凹版网点,通常被称为“经典凹印”或“传统凹印”,这个净孔通过改变网孔水平下凹深度表示顺序的变化,净下洞深,深度图像的颜色和颜色浅的地方下凹浅网洞,洞净面积是常数,因为孔净面积是一样的,因此,壁厚是相同的。

  In the same open area, this is a typical intaglio dot, usually referred to as "classical intaglio" or "traditional intaglio". This net hole represents the change of order by changing the horizontal depth of the net hole. The net depth of the net hole, the color of the depth image and the shallow area of the net hole where the color is light, are constant because the net area of the hole is constant. The net area of the hole is the same, so the wall thickness is the same.

  2净孔下凹深度不变,开放面积变化,网孔通过改变网孔开放区域代表的形象逐渐变化,网孔面积大,深颜色和浅颜色孔面积小,网孔下凹深度不变,这样的网格点的特性,类似于图片代表的原则胶印节点,所以这种凹版也被称为“点凹印”。

  2. The concave depth of net hole is unchanged and the open area is changed. By changing the image represented by the open area of net hole, the net hole area is large, the area of dark and light color holes is small, and the concave depth of net hole is unchanged. The characteristics of such grid points are similar to the principled offset joint represented by pictures, so this gravure plate is also called "dot gravure printing". "

  目前,这种洞穴是常见的洞穴类型。该洞穴的特征是:在深颜色上,洞穴的开口面积和深度都较大;在浅色中,洞口面积和洞的深度都很小。

  At present, this kind of cave is the most common type of cave. The characteristics of the cave are: in the dark color, the opening area and depth of the cave are larger; in the light color, the opening area and the depth of the cave are very small.

  4 FM调频原理的应用点筛查凹版印刷,凹版印刷可以生成调频洞穴和网格点的特点是:空间位置在凹印互联网点随机变化,但孔净面积是一样的,为了在图像的深色区域不是发达地区没有墙”区“调频洞空间应该合理控制,不能完全随机,上述四种类型的网格点,可以通过电子雕刻制版和激光雕刻。

  4 FM frequency modulation principle application point screening gravure printing, gravure printing can generate frequency modulation caves and grid points. The characteristics of gravure printing are: the spatial position changes randomly at gravure Internet points, but the net area of the hole is the same. In order to be in the dark area of the image, the "frequency modulation cave space" should be controlled reasonably, not completely with the developed areas without walls. Machine, the above four types of grid points, can be made by electronic engraving and laser engraving.


 
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