The printability of different paper is quite different. Langcheng, an expert in packing box printing, introduced that some problems would be brought to normal production if the corresponding technological measures were not taken according to the material conditions. However, even if the same type of paper products are used, the quality and printability of base paper will be different due to the differences of materials and processes between different brands or manufacturers. For example, some white paperboard, white cardboard and glass card are slightly acidic, and the ink drying is slow after printing, which will lead to difficulties in semi-finished overprinting and increase the rate of unqualified products; some low-grade white paperboard and glass card have poor surface strength, which is easy to cause quality problems such as powder dropping, hair dropping, foaming or delamination during printing.

圖像的色彩分解，傳遞合成，早期的彩色印刷品是由九十二塊不等的印刷版疊印而成，不但費時費工，而且得到的只是接近彩色效果圖片，直到十九世紀末在色彩學有關原色，間色，混色及分色成像理論上有突破性發現后，才使彩色技術發展到僅用黃、品紅，青三色版即可疊印出和原稿接近的彩色印刷品，但由于印刷用的Y MC三元色墨活多或少含有雜色，其純度并非理想的，造成在分色上及疊印過程中容易形成偏色，因此使用黑版能穩定圖像暗調顏色，也黑色文字印刷。

Color decomposition, transmission and synthesis of images. In the early stage, color printing was made of nine to twelve printing plates, which not only took time and labor, but also got close to the color effect pictures. It was not until the breakthrough in the theory of primary color, intermediate color, color mixing and color separation and imaging in the end of the 19th century that color technology developed to use only yellow, magenta and cyan The tricolor plate can be used to produce the color printed matter close to the original. However, the purity of YMC ternary color ink is not ideal due to its high or low impurity, which makes it easy to form color deviation in color separation and overprint process. Therefore, the use of black plate can stabilize the image dark tone color and solve the problem of black text printing.

由于印刷紙張多是由客戶確定的，所以印刷企業往往處于被動遷就的狀態。但即使面對的是客戶為了降低成本而選擇的不太令人滿意的紙品，我們亦要在印刷工藝上進行精心的設計，以達到質量的盡可能提升。經過實踐筆者得出幾點心得，愿與讀者分享。

As printing paper is mostly determined by customers, printing enterprises are often in a passive state. However, even if we are faced with the unsatisfactory paper products selected by customers in order to reduce costs, we also need to carefully design the printing process to improve the quality as much as possible. After practice, the author obtains some experience and is willing to share with readers.

印刷廠不能光是有一些簡單的，比如說（騎馬訂、折頁機、覆膜機、軋車機等，）對于一些要求高些畫冊的要求，不光是這些簡單的機器能做好的，里面還夾雜一些跨頁，拉頁等等就需要來研究這么做好這個裝訂方式，就比如說一些教輔書之類的畫冊，用在一些學齡前兒童的手上，他們對裝訂的方式比較高，小朋友對一些比較吸引人的圖畫，她或者他們對書本的翻的方式可能比叫夸張，容易造成掉頁脫離等等一些情況的發生，這些就是要有的方式來控制怎么裝訂好。

The printing factory can't just have some simple ones, such as (horse riding, folding, laminating, rolling machine, etc.) for some picture books with higher requirements, it's not only these simple machines that can do it well, but also some cross pages, pull pages, etc., which need to be studied to do this binding way, such as some teaching auxiliary books and other picture books, which are used in some learning In the hands of pre-school children, their binding methods are relatively high. The children's way of turning over some attractive pictures or books may be more exaggerated than exaggeration. It is easy to cause page dropping and separation. These are the professional ways to control how to bind well.