Common printing terms

1. White exposure / leakage: the printing paper is mostly white. During printing or plate making, the color of the connection is not close, exposing the background color of the white paper.

2. Whitening: the photographic plate making process in the screen era. In order to remedy the lack of dark bit sensitivity of online pictures, you can remove the original flash once or put a piece of paper to make up the exposure, or directly use the flash lamp to flash white light, so as to increase the deep bit network of the original and soften the image.

3. Fat explosion: "overeating" will certainly "fat". If phenanthrene has more silver particles, light will expand its territory. Manual overprint is more exposed and fattened in photosensitive film and septum transparent film.

4. Trapping: intentionally expand the color junction during color separation and plate making to reduce the impact of inaccurate overprint.

5. Field: refers to the color block area without dot, usually refers to the full version.

6. Anti white: characters or lines are printed with negative lines, revealing paper white.

7. Screen collision: in the AM screen color separation process, the mesh angle distribution is wrong, or the distance between each mesh angle is less than 25 °, and the moire begins to be obvious.

8. Flying screen: the screen hanging process of lens plate making. Remove the screen after normal exposure, supplement short exposure and increase contrast.

9. Dog teeth: the "teeth" of a dog are concave convex and staggered. The picture has insufficient pixels, and the "dog tooth" shape appears on the edge after zooming in.

10. Rose dot: reticulate pattern like a deer. The worse is called mat pattern, and the worse is Turtle pattern.

11. Head trimming: the order of layout arrangement, with the prefix as the reference line. Extended to make-up and binding, it refers to taking the version head position as the benchmark.

12. Mask: it is a mask for manual color separation, which can be dried with film or cut with red film, and can be used for ground returning or color trimming.

13. Reflexivity: refers to a printing method that saves printing plates. Let the paper finish printing one side first, and then turn the paper left and right and the bottom upside down after drying. It is called bottom reflexion, and the end of the paper when the bottom of the mouth is reversed is called mouth reflexion. It is the process of reprinting the back of the paper without changing the printing plate.

14. Needle position: stop gauge edge position of printing sheet. The paper is long and short, and the needle position alignment is required for printing, color registration and cutting.

15. Stone number: the title of printing number in the stone printing era. The color of paper is called one stone at a time.

16. Second hand: it does not refer to "second-hand goods". The second hand of the fingerprint brush machine, or watch.

17. Proofing: pre print a sample for formal printing through a proofing machine.

18. Bleeding: the printing and binding process requires that the ground color or picture of the page must span the cutting line by 3mm, which is called bleeding.

19. Flying edge: "flying", meaning cutting and removing. Flash refers to the removal of bleeding edge, which is a binding term.