Printing magazines,
books, newspapers, stationery, posters, packaging, and other print items use a
wide range of technology. The following are the most common industrial Printing Press in Dubai processes:
1.
Offset
lithography
2.
Flexography
3.
Digital
printing: inkjet & xerography
4.
Gravure
5. Screen printing
1. Offset Lithography
Offset printing is the
most common industrial printing technology, and it is used to produce a broad
variety of items including cards, stationery, pamphlets, brochures, magazines,
and books. It may also be used to make packaging like boxes or cartons.
A printing plate,
which is most typically composed of a metal in offset lithography, includes an
image of the content that has to be printed. Only this picture section of the
plate holds ink when it is inked. After that, the inked image is transferred
(or offset) from the plate to a rubber blanket, and finally to the printing
surface. Printing on paper, cardboard, plastic, and other materials is
possible, but they must have a flat surface.
Offset lithography is
the full term of the offset printing technique. Both words describe different
aspects of the Printing Press in Dubai process:
Lithography is a
printing technique in which the image and non-image areas share the same plane.
This indicates that the printing surface is perfectly flat. This is possible
thanks to a simple chemical principle: offset printing ink is an oily material
that repels water. If you can make a surface with a tiny coating of water on
some spots, the ink will be repelled. The image areas must be lipophilic (or
oleophilic) – that is, they must receive ink – whereas the non-printing
portions must be hydrophilic – that is, they must reject oil but accept water.
2. Flexography
The content to be
printed in flexography is on a relief of a rubber printing plate. This plate is
inked, and the resulting image is transferred to the printing surface. Printing
on paper, plastics, metals, cellophane, and other materials is possible using
this method. Flexo is mostly used for packaging and labelling, with newspapers
coming in second.
3. Digital Printing
The method of printing
directly from a digital image to a variety of surfaces is known as digital
printing. In professional printing, small-run works from desktop publishing and
other digital sources are printed on large-format and/or high-volume laser or
inkjet printers.
Digital printing may be accomplished in a variety of ways. The industry is dominated by two technologies:
Inkjet – Small droplets of ink are blasted from the nozzles of one or more
print heads to generate the picture that needs to be printed in an inkjet
printer. Inkjet printers can print on a variety of materials, including paper,
plastic, canvas, doors, and floor tiles. Posters and signs are frequently
printed using inkjet technology. It's also cost-effective for short-run
publications like photo books or small book runs. To print changeable data,
such as mailing addresses on direct mail pieces, in-line inkjet printers are
frequently integrated with other types of Printing Press in Dubai.
Xerography - The image to be printed is generated in xerographic printers, such as
laser printers, by selectively applying a charge to a metal cylinder known as a
drum. To attract toner particles, an electrical charge is applied. These
particles are transported to the media on which the print is being made. To
ensure that the toner is well set, the substrate is passed through a fuser,
which melts the toner into the medium. Laser printers are utilized not just in
workplaces, but also for short-run printing of books, brochures, and other
publications. Transactional printing (bills, bank paperwork, etc.) and direct
mail are also done on these printers.
· Print tasks that were traditionally printed via
offset, flexo, or screen printing are increasingly being printed digitally.
· In both colour and black-and-white short-run
small format (A3 size) printing, digital is displacing offset. Digital presses
from Xerox, HP, Canon, and Konica Minolta are used by quick printers and copy
businesses.
· Digital printing of labels is becoming more
common.
· Wide-format inkjet printers handle billboard
and point-of-sale or point-of-purchase operations.
· Small format printers are commonly used to
print on phone covers, mugs, and other items.
· Print-on-demand is becoming more popular among
publishing houses. The Espresso Book Machine shown below is ideal for the task.
There are several
different digital printing techniques aimed toward specialized niche markets:
Dye-sublimation is a printing technique that uses heat to
transfer dye onto a substrate. Dye-sub printers are mostly used for textile
printing, proofreading, and making photographic prints. Some printers are
capable of printing on a number of materials, including paper, plastic, and
cloth.
Heat is utilized in the direct thermal printing method to modify the colour
of a specific coating that has been put on paper. This method is employed in
cash registers, but it is also used to apply marks to items, such as serial
numbers. A transparent ink is utilized for this, which changes colour when
heated by a laser.
Heat is used to melt
print off a ribbon and onto the substrate in the thermal ink transfer printing
method. It's still used in some proofing devices, although it's slowly fading
from the market.
4. Gravure
This method, also
known as rotogravure, involves engraving an image onto a printing cylinder. The
ink is applied to the cylinder and then transferred to the paper. Gravure
printing is used for high-volume printing projects including newspapers,
periodicals, and packaging.
In gravure printing,
the image carrier is often a steel cylinder that has been electroplated with
copper (some modern gravure presses use aluminum or plastic). On the gravure
cylinder, a negative of the picture to be printed is formed as a pattern of
cells, which can be of uniform or varied depth, with as many as 50,000 or more
cells per square inch. The image portions are rendered in recess, while the
non-image areas are rendered in relief. The image can be created analogue or
digitally; traditionally, a photographic film negative of the image is placed
over the gravure cylinder and the image areas are either engraved onto the
gravure cylinder using a laser or diamond tool or chemically etched in place
(with the help of a chemical etching tool).
5. Screen Printing
This Printing Press in
Dubai method uses a screen, which is a woven piece of cloth, as the name
indicates. This mesh is covered with a non-permeable substance in some
locations. Ink may be pushed through the mesh onto a substrate in the remaining
free regions. The benefit of screen printing is that the recipient's surface
does not need to be flat, and the ink may cling to a variety of materials,
including paper, fabrics, glass, ceramics, wood, and metal.
How do you choose the optimal printing method for a job? The factors below can help evaluate which printing method (offset, flexo, digital, gravure, screen printing, etc.) is suitable for a certain task.
1. Run-length - How many copies are required? Some printing methods, such as flexo or
gravure, entail a significant initial investment. They are only economically
viable for huge jobs. In most circumstances, a run length of one – implying
that each print is unique – means that digital printing is the only accessible
or cheap technique.
2. Deadline - When must the printed job be delivered? When you need something
quickly, digital is impossible to beat. The startup time is quick, and there is
no need to wait for press sheets to dry. The very big web presses used for
printing newspapers, on the other hand, feature integrated folding and cutting
technology. This also shortens the time required to deliver a final product.
The printing company's workload and schedule have a greater influence on timely
delivery than the printing machines they utilize. When a firm is busy, your
task will most likely take longer. Your cards will have to wait until Friday if
they only print business cards on Friday.
3. Size - What is the size of the document that has to be printed? The size of
the sheets that pass through printing machines is obviously limited by physical
limits. For some applications, such as posters, the printer may get around this
constraint by tiling - breaking up the artwork into smaller portions that are
printed individually.
4. Substrate - What kind of paper should the work be printed on? On paper, every
printing process may be utilized, but not all of them can print on cardboard,
glass, metal, ceramic tiles, or other materials. A workaround is often to print
a coating on the substrate first, which permits the ink to adhere. It's also
vital to think about whether the topic being printed on is fully flat or not.
For example, offset printing can only be done on flat surfaces. On the other
hand, pad printing was created to print on curved surfaces.
5. Design - What exactly does one need to print? The designer's intentions or the
format of a document can also aid in determining which is the most important.
6. Requirements for completion - What further must be done once the work has
been printed? Some printing methods have finishing choices. Digital presses,
for example, may have a binding unit, as can big web offset presses. Some sorts
of finishing are easier to do with certain printing methods.
7. Availability - Which printing systems are available? Even
though work is excellent for xerography, a printer may nonetheless print it
using offset since that is the equipment he has available.
8. Budget - What is the budget for printing the job? Many of the preceding
requirements do not rule out the possibility of multiple printing processes.
Each step, however, will have a cost connected with it, which may or may not be
included in the budget for Printing Press in Dubai.
For highly specialized
purposes, additional printing processes were created. Flock printing,
letterpress, intaglio, pad printing, and thermography are examples.
May 11, 2022 by Ashir 156 Views