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Process Procedures For Book Printing
- Oct 19, 2017 -

Book printing is the use of paper and a variety of binding materials, printing technology will book design materialized into a material form of the process of the book. Book printing mainly using lithography, lithography printing plate and text parts and blank parts almost on the same plane, printing, first by the water supply device to the printing plate of the blank part of the water supply, and then from the inking device to the printing plate for ink, the use of ink insoluble principle, ink can only be used to print the graphics and text section, and then use the printing pressure, The printing plate on the ink through the blanket transfer to the substrate, complete printing. Book Printing The overall design of the book and the final shape, effect, quality, must rely on the paper material prepress, formal printing, prepress processing, bookbinding molding technology.

At present, the vast majority of our books are used offset printing, book printing more choice of uncoated paper or light coated papers for the book Inner core paper, Book Printing the use of coated paper for book cover.

Book printing needs a carrier to the book design information through the ink transfer to the paper, the printing plate is used to transfer ink or other adhesion color to the Cheng material on the printed graphics and text carrier. Book printing using lithography, lithographic printing plate includes the traditional PS version, flat intaglio, as well as photosensitive type, thermal type, such as CTP, which is the traditional type of PS, Book Printing the production process generally includes the film, imposition, print, proofing and so on four of stages.

1) Out: Through the imagesetter, the use of color separations and dot technology, the book design to convert to separations film. Film has two types of film and yin-pattern film. Film and text information part of the opaque, blank part of the light to the Yang-graphic film, film and text information part of the light, blank part of the opacity of the yin-pattern film;

2 imposition: Also known as "Installed Version", "group version." Because the final form of the book is more than 16 open suites, and the production of more use of the folio printing presses to print, Book Printing so it is necessary to put a number of 16 of the layout of the film on a folio film, and then printing with folio, printing after completion of the paper in a certain order folded into 16 open, get 16 books size. Imposition can be manual imposition or computer imposition, imposition should be based on the folding order, book distribution page order, cutting, etc. to arrange the position of film;

3) Print: It is the process of making a good film to make PS plates. Book Printing According to the use of different types of film, PS version has a positive PS version and Yin-pattern PS version of two. The positive type PS Edition belongs to the light decomposition type, is uses the positive type film and the plate photosensitive layer dense connection exposure, photosensitive layer See light part decomposition, after the dilute lye developed and dissolved, exposing the aluminum version of the base, forming a blank part of the printing plate, Book Printing and not see the light part of the photosensitive layer has not changed, still remain in the layout, forming a printed version of the Graphics and text section. Yin-pattern PS version belongs to the light polymerization type, is using yin-pattern film and plate photosensitive layer of the exposure, photosensitive layer See the light part of the polymerization, become insoluble in the developering of the material, the formation of a printing plate part of the text, and then dilute lye developed, not see the light part soluble in developering, exposing the aluminum version of the base, forming a blank part of the plate;

4 Proofing: With a good PS printing plate installed on the prototype printed on a number of prints, used to check the quality of Seihan, in order to change the process, Book Printing but also to provide customers with the basis for revision, but also for the official printing ink color, specifications and other reference data.

3 Official printing of books

Proofing out of the proofs by the client after the signature of the manuscript can be used to print the official batch printing. In order to ensure the reproduction of printing color, the arrangement of printing color sequence should be paid attention to in batch printing. The color of book print is from yellow, magenta, cyan, black four-color ink overprint, overprint in the order is the color sequence. Book Printing Color Printing products using four-color printing, four-color printing, four-color overprint after the color effect and overprinter accuracy can be immediately identified and timely adjustment. However, the arrangement of color sequence of four-color printing presses is more complex, generally follows the following principles:

1 The transparency of the ink first printing, to avoid overwriting the previous color;

2 The main tone after printing, the second tone first printed to highlight the main color of the screen. For example, the landscape is cold color, so it can be printed after the cyan, and the character of the picture is warm color, so it can be printed after the magenta;

3 ink viscosity of the first printing, ink viscosity small after printing, to avoid ink reversal printing.

After you have determined the printed color sequence, Book Printing in the process of printing also need to pay attention to the balance of ink, often out of print samples to check the accuracy of overprinter, ink color depth, text clarity, the blank part of the cleanliness of quality items such as printing, adhere to the three-time operation, that is, diligent inspection of printed samples, diligent observation suites moisture, So that the ink is always in the normal state of stability, to ensure the quality of the entire printing process.

4 Printing and finishing of books

After the book printing, in the book cover can be glazing, laminating, Book Printing hot stamping or other decorative processing.

4.1 Glazing

Glazing is coated on the surface of a layer of colorless and transparent coating, after leveling, drying, calendering, in the print surface to form a thin and uniform transparent bright layer, both can make the surface of the printed product luster, but also to make the original picture of the printed gloss transmission out.

4.2 laminating

Coated plastic film is coated with adhesive on the surface of the printed matter, heated, pressurized so that it is bonded together to form a paper-plastic processing process. Book Printing The coated printed matter, the surface more smooth and bright, improve the gloss and fastness of printing, but also played a waterproof, wear-resistant role, is the most commonly used book printing processing methods. Laminating process: Process preparation → installation of plastic film rollers → coating adhesives → drying → set process parameters → test film → sampling inspection → formal laminating → rewinding or stereotypes division.

4.3 Hot Stamping

Hot stamping is the use of special printing inks, it is the use of a certain pressure and temperature, using hot stamping machine on the template, so that print and hot stamping foil in a short period of pressure, the metal foil or pigment foil according to hot stamping template graphics and text transfer to the printed surface. Usually, the hot stamping process is based on the cover designer according to the value of books and periodicals, publishers request and collers content to determine the processing plan, generally on the book cover only hot stamping titles, publishers, a little bit of some of the hot stamping patterns, or again with a variety of colors of the hot mix, sets of hot in the book sealed shell surface.

5 Book Binding Molding

Bookbinding is the final process of book printing process, book binding methods are divided into horse nails, plastic, hardcover, and other forms, in which the milling back plastic for the books commonly used bookbinding. Milling back plastic pack is a good page of the book to stick, clamping, Book Printing along the book back with the knife milling flat into a single page, then the milling of the book hair, the adhesive brushing on the back surface, is its groove filled with plastic liquid, to increase the bonding fastness, and then affixed with gauze, cardboard, that is, become a wireless binding book core. Book Inner core molding, and then use hot melts to the book Inner core and book cover into a book. Finally, the use of cutting knife to the book in addition to the three sides of the edge cut off, making it a 16 open for sale, reading books.

Book printing process is the continuation of the design, Book Printing must be familiar with the printing process related knowledge, follow the laws of the printing process, from pre-press, printing, finishing three aspects to all aspects to consider, to print a good printed goods.