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Lithographic
Lithographic

Lithographic

Jan 14 2020 06:00:30
Lithographic

WHAT IS LITHOGRAPHIC PRINTING?
Lithographic printing is still a popular choice amongst the general public for their printing needs, despite the modern advancements in the printing industry. The reason for it being so popular is that it has been around for centuries now, and it still holds the same significance as it did before, and printing through lithographic technique is still considered to be of top quality.
The lithographic printing technique was invented in the late eighteenth century with limestone as the printing surface. Lithographic printing made it possible to print a much wider range of marks, and areas of tone that was not possible with earlier printmaking relief or intaglio methods. It also made colour printing easier with areas of different colours that can be applied to separate stones and can be overprinted onto the same sheet.
These plates are then put on to a press. The ink fountains, then press pulls in the ink and puts it on to the plate. The press applies great pressure to the plate and the ink imprints the image from the plate onto a rubber blanket. The image is then pressed to the paper off the blanket to make a print. All this happens fast and many impressions can be made at a given time. It is a very efficient process and lends itself very well to long runs over a long period .

TYPES OF LITHOGRAPHY

FINE-ART LITHOGRAPHY- the fine art lithography is also known as colour lithographs or chromolithographs or oleographs were developed in the second half of the 19th century. Even though they were of poor quality they were still very popular among the printing community.

COMMERCIAL LITHOGRAPHY- After about 1825 many firms that utilized the lithographic process were established for producing a variety of commercial work and for distributing popular topical, historical, and religious subjects to a wide audience. MODERN DAY LITHOGRAPHY- Lithographic printing on a modern rotary offset press can produce high-quality, finely detailed impressions at high speed. It can reproduce any material that can be photographed in the plate-making process. this accounts for more than 40 percent of all printing, packaging, and publishing carried out; this percentage is more than twice the percentage produced by any other single printing process.

HOW DOES IT WORK?
The modern-day lithographic printing involves the creation of printing plates that are treated in such a way that when ink is applied the wet non-image areas repel the oil-base inks because oil and water don’t mix, adhering only to the images that are to be printed. Then the ink is transferred onto a rubber which is then pressed onto the paper or another substrate as it is pulled through the machine. An image that is lithograph printed is separated into its fundamental colors; cyan, magenta, yellow and black (CMYK).
These plates are then put on to a press. From the ink fountains, the press pulls in the ink and puts it onto the plate. The press applies great pressure to the plate and the ink imprints the image from the plate onto a rubber blanket. The image is then pressed onto the paper off the blanket to make a print. All this happens fast and many impressions can be made from one set of plates. It is a very efficient process and lends itself very well to long runs over a long time.

IT’S BENEFITS?
Printing through lithographic technique is one of the most cost-effective ways of printing large units Lithographic prints are very versatile and flexible and can be changed according to its colours, sizes, and structure. The quality of the image printed through the lithographic technique is top-notch and un-parallel when compared to any other technique. Many sheet-fed lithographic presses print simultaneously on both sides of the paper, which decreases printing times. Lithographic printers use the equipment for any length of the press run. The slower, more precise sheet-fed lithographic presses are used for short- and medium-run printing like art reproduction, coupons, direct mail inserts, greeting cards, and posters. The high-speed, more efficient web presses are used for medium- and long-run printing like advertising flyers, books, catalogs, magazines, and newspapers. Also, lithographic presses work not just on paper but a wide variety of printing surfaces, including cloth, leather, metal, plastic, and wood.

Author

Lithographic

V Chakarpani

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