濟南印刷廠隨著社會的發展,其發展空間越來越大,當我們在印刷的時候顏色的地位是非常高的,而工作人員需要具備顏色處理的方法,下面就給大家介紹一下做好顏色的處理:
With the development of society, Jinan printing factory has more and more space for development. When we are printing, the position of color is very high, and the staff need to have the method of color processing
一、在膠印中
1、 In offset printing
1、壓力的大小直接決定了印刷過程中油墨的轉移,如果印刷過程中出現局部的壓力不均,將導致印刷墨色的不實。
1. The size of the pressure directly determines the ink transfer in the printing process. If there is local uneven pressure in the printing process, it will lead to the printing ink color.
2、橡皮布的壓縮變形是產生壓力的根本保證,油墨的轉移就是橡皮布壓縮變形的結果。因此,壓力的大小及均勻程度與膠印印刷用的橡皮布有著直接關系。
2. Blanket compression deformation is the fundamental guarantee of pressure, ink transfer is the result of blanket compression deformation. Therefore, the size and uniformity of pressure and offset printing blanket has a direct relationship.
3、包覆在滾筒上的橡皮布,同時受到本身張緊力和壓力的作用,隨著滾壓次數的不斷增加,橡皮布壓縮變形的應力積累,橡皮布會變得硬挺,失去原有的柔軟性和高彈性,甚在橡皮布表面會出現光亮或龜裂的痕跡,從而導致壓力的局部不均勻。
3. The blanket wrapped on the drum is affected by its own tension and pressure at the same time. With the increase of rolling times, the stress accumulation of blanket compression deformation, the blanket will become stiff, lose its original softness and high elasticity, and even appear bright or crack marks on the blanket surface, resulting in local uneven pressure.
4、由于橡皮滾筒安裝在印版滾筒和壓印滾筒之間,橡皮布上的每個微小單元每旋轉一周,都要分別和兩個滾筒各接觸一次。
4. Because the rubber cylinder is installed between the plate cylinder and the impression cylinder, each tiny unit on the blanket has to contact with the two cylinders respectively once every rotation.
5、其受力是周期性變化的,正是由于橡皮布受力的周期性變化,會導致橡皮布產生內耗,導致橡皮布的老化,影響印刷壓力的均勻性,可能導致橡皮布的報廢。
5. The stress changes periodically. It is precisely because of the periodic change of the stress of the blanket that the blanket will produce internal friction, lead to the aging of the blanket, affect the uniformity of the printing pressure, and may lead to the scrap of the blanket.
6、橡皮布除了為膠印提供印刷壓力外,橡皮布在壓印力的作用下,應具有很好的將印版圖文部分的油墨傳遞到承印物表面的能力,即受墨和釋墨能力,但是橡皮布的老化會改變這種油墨傳遞的能力,也會導致墨色不實的現象。
6. In addition to providing printing pressure for offset printing, the blanket should have a good ability to transfer the ink from the graphic part of the printing plate to the substrate surface, that is, the ability to receive and release ink. However, the aging of the blanket will change the ability to transfer the ink and lead to the phenomenon of false ink.
二、印刷過程中
2、 During the printing process
1、出現墨色不實的原因很多,其涉及的因素也很多,包括紙張的性能、油墨的性能、印版的質量、印刷橡皮布 的質量、印刷壓力、印刷機的性能和印刷工藝等方面。
1. There are many reasons for false ink color, including paper performance, ink performance, printing plate quality, printing blanket quality, printing pressure, printing press performance and printing process.
2、如果紙張、油墨的性能穩定,印版制作質量滿足了印刷要求,印刷機工作性能相對穩定的話,還是出現了墨色印刷不實現象,其主要產生的原因就是印刷壓力的問題了。
2. If the performance of paper and ink is stable, the quality of printing plate meets the printing requirements, and the working performance of the printing press is relatively stable, the ink printing is not true. The main reason is the printing pressure.
三、在平版膠印過程中常會碰到顏色印不實的現象,在印刷品上主要表現為印品實地部分有斑點或發虛,圖文或線條殘缺不全,圖像的階調層次再現性差或網點丟失。
3、 In the process of offset lithography, we often encounter false color printing. On the printed matter, it is mainly manifested as spot or void in the field part of the printed matter, incomplete graphics and lines, poor reproducibility of image gradation or dot loss.
Jinan printing factory is to whitewash, identification, publicity of goods as the main purpose of the printing method and post press processing technology, but for the color selection, management, processing are not careless, serious processing can reduce the phenomenon of false ink. I hope the above content is helpful to you. If you want to know more wonderful content, please click the official website: http://www.seven2000.com