What happened to the printing design before using the computer?

Before computers, there were movies. At that time, film was used to take pictures. About 1990 years ago, in the coastal area of China, the printing house had a plate-making room and a design room. The designer of the design room first designs and creates according to the customer's requirements. Generally speaking, gouache pigments are used to draw design drafts on paper by hand. After the style is passed, they draw a black draft or an ink draft according to the requirements of the design draft (all words should be handwritten in duckbill ink; After the imagesetter appears around 1986, you can print the text according to the imagesetter, then cut and paste it in the corresponding position of the black manuscript), and then send the black manuscript and related color pictures (including hand-drawn, inkjet, photos, etc.). ) to the plate-making room; In the plate-making room, the black manuscript is made into film by large-scale photography, the color manuscript (that is, hand-drawn or photo) is made into CMYK film by large-scale camera and color filter, and then the CMYK film is turned into dot film by screen drying.

I'll write another day after work.