Ngày đăng: 28/05/2019
The most popular printing technology today
Summary of the most common printing technologies currently used by printing companies.
With the current era of rapidly developing technology, all industries have markedly changed day by day, new technologies, new techniques, methods and refreshing methods are always updated continuously. And of course the printing industry is no exception. To choose for themselves the appropriate printing technology, showing the most complete design on the right material, Red Onion has summarized 5 popular printing technologies as below.
OFFSET PRINTING TECHNIQUE – WHAT IS OFFSET PRINTING?
Offset printing is the most popular form of industrial printing today. Offset printing is the process of transmitting information from the die to the surface of printing materials in single or multi-colored ink under a pressure on a device called printer.
BASIC CHARACTERISTICS OF OFFSET PRINTING TECHNOLOGY
– Printed and non-rinted elements are almost on the same plane.
– Due to the physical and chemical properties, the printing element catches ink and pushes water and the non-printing element catches the water, pushes the ink.
The process goes as follows: the image of ink is pressed onto offset sheets (made of rubber) first and the offset sheets are pressed onto paper.
Application of Offset printing:
Offset printing technology is used quite a lot on the market today. Offset printing technology produces products with high quality and sharp images so it is very suitable for the production of products printed on paper, cardboard, plastic carton or just materials with flat surfaces such as: books, magazines, catalogs, marketing brochures, publications necessary for businesses … Printed products can be in one color or many colors with different sizes depending on customer requirements.
Flexo printing is derived from the word “flexible”, meaning flexible with dies made of photochemical photopolymer plastic, CTP or laser engraving method.
Flexo printing is a direct printing technique due to the fact that there is an embossed print with ink granted to the die by a metal shaft whose surface is engraved with many small cells called anilox.
Working principle of flexo printing method:
When printing, the print axis is partially dipped in the ink trough so that the ink will fill in the boxes on the surface of the shaft and the ink on the surface will be removed by the ink brush system. The print frame will then contact and receive the ink from the print axis.
Application of flexo printing:
Although the print quality is not high, flexo printing has its advantage. The quality of the product printed out is uniform and in bold colors so this method often has relatively fast print capacity and is often used for printing jobs that need high capacity such as printing cartons, all kinds of decal labels, films, etc. Flexo printing can also be used for printing on rolls for automatic machines or print on many special materials such as: cloth, paperboard or printed on polymer film …
Silk printing is a common name called by workers from the time when the grid of the printing mold was made of silk. Later, when the silk could be replaced by other materials such as cotton, chemical fiber fabric, metal mesh, the name was expanded as grid printing.
What is silk printing technology?
Application of silk printing in life:
Silk printing (grid printing) is a fairly popular printing technique, commonly found in wedding card printing, shirt printing, nylon bags,, and a small number of paper forms.
Currently on the market there are 2 forms of silk printing are manual and machine printed:
1. Manual silk printing:
– Advantages: Low cost, low volume printing, can print on many different materials, be easy to determine the color.
– Disadvantages: Acceptable prints, temporary definition, time consuming, can print only 1 or at most 3-4 colors because each time you can print only one color, if you want to print in many colors, you have to print many times that raises the cost and depends on the skill of the workman. It is not possible to print landscapes and backgrounds, if so, only print in one single color
2. Silk printing by machine:
– Advantages: Fast, higher accuracy, more uniform color
– Disadvantages: Must invest in expensive machinery while silk printing is mainly for small orders and small quantities.
Appeared in the market a long time ago and also gradually asserted its position. Specifically, different printing technologies such as inkjet, laser and xerography are often referred to as digital printing.
WHAT IS DIGITAL PRINTING?
Digital printing is a modern printing method that uses digital technology to print, digital images are analyzed and put into direct printing to produce instant products in large quantities. and high quality.
Digital printing is often applied in leaflet printing, advertising printing, photo printing, stamp printing, poster printing, card printing, warranty stamp printing, name card printing …
In the field of printing, gravure printing is quite popular in the production process of packaging so it plays an important role in many businesses today.
WHAT IS GRAVURE PRINTING:
Gravure printing or concave printing is a printing technique that uses a copper-plated printing cylinder about 100 microns thick, printing elements (pictures, writing) are deeply etched and located under the surface of the printing axis. The non-printing element is on the surface of the printing axis and most gravure printing is primarily printed in rolls.
THE PRINCIPLES OF COPPER TUBE
Gravure printing is based on the principle of concave printing, the printing elements are indented into the metal surface. When printing ink is applied to the surface of the mold and then overflows into the indentations of the print element, next there will be a device called a squeegee that will remove excess ink from the surface of the print surface, then there exists only ink in the indentations of the print element. Eventually the printing pressures will cause the ink in the indentations to transfer to the surface of the material, each unit has a drying unit because gravure ink has a low viscosity of only about 0.1 Pa.s. to help ink dry faster and print quality better.
Gravure printing is used in packaging printing such as paper bag printing, paper box printing .. Gravure printing is applicable to many different materials such as paper, plastic film, thin metal, PE, OPP, MPET, PET … with many types of packaging that require us to print and then put together. The finished product of this printing technique is called laminated gravure printing.
ADVANTAGES AND DISADVANTAGES OF COPPER TUBE PRINTING
Laminated gravure printing has the advantage of higher image quality accuracy and recovery than typo and offset printing because of the durability of large print shafts that can be used for reprint printing. Print speed can reach over 200m / min for modern gravure printers that print in large quantities, but the cost of a print axis is so high that requires large print volumes of 500,000 rpm or more.
