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offset book printing and single-color offset printing

In the process of making-up, zero page shall be avoided. Except text part, a book also includes other parts such as head page, preface, table of content, copyright page etc. Each part may use different paper. It’s not difficult to make the quantity of a kind of paper to be multiple of 4.

Binding Form and Layout Design

Usual book binding forms are: saddle stitching, flat stitching, thread sewing, offset binding etc. In saddle stitching, thread sewing and offset binding, the type page in the center spread could be designed small. While using flat stitching, it shall be bigger, for the gutter of flat stitching shall be about 5mm. When design manuscript, the size of body type, density between rows, width of surrounding margin, line and blank line of headline etc are all affecting book cost. For example, for a book in 32-mo, the original design is: type face No. 5 in rank , 26 words×25 rows =650 words on every side, row space 5/8 strip, therefore a script with 240 thousand words needs 370 sides. If it is changed to: 26 words×27 rows=702 words, row space 1/2 strip, 342 sides are needed. The two forms differ in 28 sides. Book cost can be reduced by every aspect like page number, paper and binding. However, it’s not all good when layout is composed to be dense. For children’s book, word size and row space can not be too small. We shall reduce book cost as much as possible while ensuring conformity to book content and readers.

 Cover Size

Cover shall be designed according to book size, spine thickness and flap size. Flap could be designed bigger while ensuring making print easy and saving paper. Most flaps could be above 30mm. However, some cover designer do not well know paper specification, format and performance of printing, they fix flap size randomly without consideration of paper format. Therefore, paper waste is usually caused, for the product does not meet the requirement of paper specification and format. Most of book covers now need to be laminated after printing, thus cost is further increased. For example, a book series have volume I and volume II. They are both 32-mo and each has about 600 sides. Use 52g paper to print, the spine is 22mm thick, and the cover adopts offset printing. Each volume is printed 20 thousand and be laminated after printing. If designers do not know the specification and format of paper well, and make the flap to be 65mm, 787×1092 1／16 paper is needed. If the flap is made to be 40mm according to paper format, 787×1092 1／8 paper can be used. Cost gap between the two including printing cost, paper cost and lamination cost would be 4000 Yuan or so. Thus we can see, designers shall have a sound knowledge of paper specification and format and take cost reduction into consideration in design, so as to avoid economic loss.

offset book printing are faster but less-costing than single-color offset printing. Picture album which requires high quality shall use double-color or four-color offset printing. New year picture, front-back end paper and others which have big solid shall use single-color offset printing to ensure high quality. Printers shall have proficient knowledge of presser performance and cost calculation standard, otherwise, high-cost printing technology may be adopted, and book quality may be affected.