Description Book Printing ProcessDescription Book Printing Process
Offset printing process is the book:
Make-up - burn out - imaging - clean version - dry version - installed version - Printing
Largely offset lithography printing. Is to offset printing for example, on the process and pre-press book printing, India, finishing as to introduce.
First, pre-press preparation
Preparations include: paper humidity treatment, the modulation of ink, wetting liquid preparation, inspection plates, printing pressure debugging.
Paper handling is to prevent humidity caused by environmental climate caused by uneven moisture content of paper and paper static deformation phenomenon, which is absolutely prohibited in the printing occurs.
II-loading test print
After the pre-press preparation well, you can install paper, loading, start debugging. Switched on, it is necessary to the feeding agencies, collection agency paper, inking unit, water unit, such as printing pressure adjustment on the line to take the paper to ensure smooth supply of water to moderate amount of ink to the printing pressure appropriate, India high quality printing products. The work ready, open the machine for a while, so to ink, water supply is moderate and uniform, and then to the paper in some of the platforms had to test-paper print version. If it is multi-color printing or chromatic printing, also need to adjust the work register to determine the suitability of location layout, graphics are skewed, day head to feet, about the size and direction of whether the register (usually in order to register the rules lines regulation). Register operation is complete, start test printing, print a few samples for quality inspection.
Ink modulation include preparation of special inks, conventional ink to add some additives. Such as ink viscosity is inappropriate, should be added to raise or lower the viscosity of the oil transfer ink; ink dry bath is bad, add dry bath agent. Various additives must be based on technology, equipment, paper and ambient temperature conditions, and the amount should be appropriate.
Printed version of the examination included: plate type, color other checks, the thickness of the test plate, plate thousand population size of the inspection, rule-line inspection, the inspection plate depth, and the layout graphic quality, with or without sewage damage, scratches, etc. Check.
Debug printing pressure: according to plate thickness, paper size, the thickness of the blanket, including the thickness of lining material, printing process requirements, and many other factors, select the appropriate roller bag lining, the pressure makes the printing process and printing products meet quality requirements.
Third, the official print
Before the formal printing, plus a number too, of paper, printed paper version had finished making the counter to zero. Printing to regular spot checks, pay attention to water water change, change ink, printing plates printing resistance force, blanket cleaning, as well as printing oil, gas and other conditions and is functioning properly.
