Offset lithography make-ready, gravure, letterpress

I. Read the following sentences and discuss whether they are true or false. If they are false, correct them.

1. Small offset press is suitable to print 100.000 copies of a magazine.

2. The size of the page should correspond to the plate size.

3. In the letterpress process the image to be printed is raised above the background.

4. Lithography stands for an “intaglio” process.

5. Gravure is a process with a flat printing surface.

6. There are four basic methods of printing.

7. With web-fed printing, the paper is supplied to the machine in the form of sheets.

8. Most presses incorporate folding, gluing, stitching and perforating after printing.

9. The printing presses have auxiliary devices for finishing processes.

10. Web-fed printing is slower than sheet-fed.

II. Find the equivalents of the following terms:

1. letterpress a) пневматичні присмоктувачі

2. gravure b) офсетний друк

3. image с) малий наклад

4. short run d) фальцювання

5. impression e) рулон

6. roller f) заглибини

7. offset lithography g) незадрукована площа

8. wells h) глибокий друк

9. ink i) приправка

10. finishing process j) фарба

11. reel k) рулонна машина

12. non-image area l) валик

13. folding m) високий друк

14. vacuum suckers n) відбиток

15. web-fed press o) зображення

III. Fill the gaps using the derivatives of the following words: treat, define, raise, cut, tailor, print, deposit, reject

1.The size of the job should be … to the machine.

2.Two pages could be … at once.

3.The printing process can be … according to the physical characteristics of the printing surface.

4.In the letterpress process the image is … above the background.

5.The ink is … by non-image area.

6.In the intaglio process the image is… into the plate.

7.Ink is … on the paper only from the recessed wells.

IV. Which printing process does each definition refer to?

a) The most widely-used commercial printing technique where the imposed pages are exposed onto plates, which are treated to attract the inks only onto image areas. The image is transferred from the plate onto a flexible rubber blanket and then from the blanket to the printing substrate.

b) This is a direct printing technique, during which the printing parts are situated in a raised position on the printing plate. Important applications of this process are newspapers and commercial printing.

c) A printing technique which is characterized by the printing parts being located deepened or engraved in the printing form. The most important applications of this printing method are packaging and illustrated magazines. It always deals with products which are produced in great quantities, since making the printing cylinders is very time-consuming and costly.

d) These operations include setting up the press to accept the size and thickness of paper being used, putting the printing plates on, putting the correct sort and colour of ink on the press, adjusting the folder, ensuring that the colour is of the right strength and that the image is in the right position — checking, in fact, that everything is correct prior to printing. Thus it is a crucial area in printing, as the eventual cost of the job and the quality of the result depend on this part of the process.

V. Speak about advantages and disadvantages of different printing techniques

Дата добавления: 2014-12-23