Offset Printing Machine

Shenzhen Hejia Automatic Printing Machine Co., Ltd. : Your Professional Offset Printing Machine Supplier!

Our company was established in 1997, and we are now a major supplier of high-quality fully automatic screen printing machines, hot stamping machines, pad printing machines, as well as automatic assembly lines, UV spray painting lines and accessories integrating R&D, manufacturing and sales.

Rich Product Range
Our company has the ability to design and manufacture fully automatic multi-color printing machines for glass and plastic substrates, as well as fully automatic screen printing machines, automatic pad printing machines, automatic labeling machines, fully automatic UV spray painting lines, automatic assembly lines and more.

Quality Guaranteed
Our company's machines use the highest quality components from Japan, Europe and the United States, such as Yaskawa, Sandex, SMC, Mitsubishi, Omron and Schneider.

Wide Range of Uses
Our fully automatic multi-color printing machine can manufacture wine caps, water bottle caps, water bottles, glass bottles, mascara bottles, lipsticks, jars, powder boxes, shampoo bottles and other products.

Leading Service
We have many years of industry experience and a complete production management, quality supervision, sales service operation system. Whether you want to buy a fully automatic multi-color printing machine series or a fully automatic screen printing machine series, just send your requirements via email and we can customize the product for you.

What is Offset Printing Machine?

An offset printing machine is a printing process that uses plates to transfer an image onto paper or other materials. It is one of the most common commercial printing methods for large-scale jobs such as brochures, newspapers, magazines, business cards, labels, and more. In offset printing, the image is transferred from a metal plate, known as an offset plate, to a rubber blanket and then onto the substrate.

Bucket Printing Machine
The APM-6350 Bucket Printing Machine is a high-speed, 6-color offset printer designed for large plastic pails (10L-20L), offering precise, full-wrap printing with UV curing technology. It features...
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Second Hand Offset Printing Machine
The second-hand offset printing machines offer an affordable, efficient solution for high-quality printing on plastic cups and various other plastic products, ensuring fast delivery and...
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Syringe Offset Printing Machine
The syringe offset printing machine is a highly efficient printing device designed for the medical industry. It is mainly used for high-precision marking and printing on the surface of syringes.
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Cap Printing Machine
The APM-CAP2L Cap Printing Machine is a state-of-the-art solution for printing high-quality designs on PP and PE caps with diameters ranging from φ28mm to φ38mm. Designed for industries such as...
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Flower Pots Offset Printing Machine
Our products are highly efficient equipment designed for flower pot printing. They use advanced offset printing technology and can print high-quality patterns and text on various flower pot...
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Offset Printing Machine For Cup
Offset Printing Machine for cup is a highly efficient printing equipment designed for round containers such as paper cups and plastic cups.
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Tube Printing Machine
The Tube Printing machine is a highly efficient offset printer designed for precise, high-quality printing on syringes and soft tubes made of materials such as PP, PS, and PET. The machine...
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Plastic Bucket Printing Machine
Plastic Bucket Printing Machine is a device specially used for printing patterns and texts on the surface of containers such as plastic buckets.
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Lid Printing Machine
Lid Printing Machine is a device specially used for printing images and texts on round or rectangular plastic can lids, cup lids and other items.
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Offset Printing Machine For Plastic Box
Offset Printing Machine for Plastic Box is a device specially designed for high-quality printing on the surface of plastic boxes.
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Pp Cup Offset Printing Machine
The pp cup offset printing machine is a device specially designed for high-quality offset printing on the surface of cups and containers made of polypropylene (PP).
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Automatic Plastic Tube Offset Printing Machine
Place of Origin: Guangdong, China
Weight: 6000 KG
Warranty: 1 Year
Key Selling Points: Automatic
Machinery Test Report: Not Available
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How An Offset Printing Machine Works

The prepress stage.

The first step in offset printing is called prepress. In this stage, you will create a file that defines how you want your print job to look.

Printing the inked image onto a rubber cylinder.

In the second step of offset printing, the inked is drawn from a resevoir and trasferred via rollers to an image on a printing plate. It then is offset or transferred to the paper via a rubber blanketed cylinder. The cylinder has also been pre-dampened with water from a water resevoir and transferred via rollders. This also gives the cylinder a coating of water. Everything is squeezed onto the paper via an impression roller which can perform the same process underneath or simply perform the job of squeezing the paper to absorb the ink.

Transferring the image to paper.

The third step of offset printing is transferring the setting of the image to paper. The next step in this process is drying or setting of the ink. After it’s dried, ink will set. This can happen by means of a large drier that removes the oils from the ink and leaves the pigment. Or it can happen by means of abosrbtion into the paper. This allows for an even coating of ink on all sides of your sheet, which helps prevent any smearing or smudging when you take it off of the press machine and handle it yourself.

Finishing up and moving on to post-press.

There are four steps involved in offset printing: pre-press, press, off-press and finishing. Each one of these stages plays an important role in the overall process. Pre-press is the first step where your design layout is created and converted into a film negative. During press, this film negative is put onto a plate and then transferred to paper via an ink transfer process called “offsetting” (hence why it’s called “offset printing”). Offsetting occurs when ink from an offset cylinder transfers onto paper by way of a blanket or cylinder that contains the image you want printed. Offset presses can print up to 300 feet per minute!

A sheetfed offset press consist of the following components

The sheet control system
In the feeder section sheets are picked up from a paper pile. The stack of sheets is placed on an adjustable pile table. Jets of air and/or a vacuum make sure the feeder mechanism only picks up a single sheet of paper each time. That sheet is then transferred to a feedboard where it is properly positioned before being transferred to the printing unit.
In the infeed section each sheet of paper is transferred to grippers on the impression cylinder.
If the press has multiple printing units, the transfer section assures that the sheet moves to the next impression cylinder. This is typically done using some kind of chain mechanism.
Once the printed sheet leaves the final impression cylinder, the delivery section carries the sheet to the delivery pile.

One or more printing units
A printing unit contains everything needed to print one color on the sheet of paper that is moved around by the sheet control system. Offset presses typically contain 1 to 10 printing units. A single-color press obviously contains one single unit to transfer ink to one side of the printing sheet. To print on the other side you have to wait until the ink has dried, then rotate the pile of paper 180 degrees and print on the other side. A press with 4 printing units can print full-color text and images using cyan, magenta, yellow and black ink. Often a fifth printing unit is added for varnish or maybe adding a special metallic ink or so.

The inking system
The ink fountain is a reservoir that holds ink. Offset ink is not a fluid ink, it looks more like a kind of thick paste. From the ink fountain, this ink needs to be transferred to the printing plate or cylinder. From there that ink will be transferred to the paper or another substrate. The inking system is responsible for this transfer. It needs to break the thick, viscous ink down into a thinner, more workable, and uniform ink film. This is done using a set of rollers. Presses can have up to 10 (or even more) rollers in their roller train. The amount of ink is usually controlled by so-called fountain keys that control the gap between the ink fountain and the first roller. The wider open this gap is, the more ink can be picked up by the roller.

The plate, blanket and impression cylinders
The plate cylinder is a large roll to which the printing plate is attached. The plate is usually made of aluminum. Its non-imaging parts will be covered by a thin layer of water that is applied by the dampening system. This means the ink which is fed by the inking system will only adhese on all the other areas. During printing, this image created by ink is transferred to a rubber blanket that is attached to the blanket cylinder. From there is the image is transferred to the press sheet. An impression cylinder carries the paper through the printing unit and provides a hard backing against which the blanket can impress the image on the paper.

The dampening system
The dampening system makes sure the non-image areas of the printing plate are moistened so that they will repel ink. This is mainly done using water, but additives are needed for long print runs to improve the ink repellency, lower the surface tension, desensitize the non-image plate regions and make sure corrosion, mildew, bacteria, and fungi don’t cause issues. That’s why gum, alcohol, a fungicide, and other agents are added to the water of the fountain solution.

Unique Features of Offset Printing Machines

High-quality printing:
With offset printing done on our multicolor offset printing machine, you can always expect a high-quality printed image. The ink stream can be controlled by the printer administrator, resulting in fewer wasteful prints with insufficient differences within the images. As a result, each piece has clean, sharp images.

Lower costs for jobs with a high volume of work:
The capacity to generate high-quality prints with little effort is one of the key advantages of offset printing equipment. It’s less expensive than rotogravure or photogravure, which offer somewhat better quality but aren’t always worth the extra money. The less money it costs to manufacture each item, the more you print during each cycle.

Quicker printing for high-volume jobs:
While there are a few extra people involved in producing the metal plate and setting up the equipment, it is worth the extra effort in terms of speed for high-volume jobs. Standard printers have the risk of running out of paper or ink during the printing process, or of creating a blurry image if ink runs out. With offset printing machines, however, the printer administrator can manage the ink stream by pressing keys, ensuring that your print quality remains optimal. This means your print job is less likely to be interrupted, which means you’ll get a lot more done in less time than if you used an urgent printer.

Cost-effective printing plates:
Each print job will need the printing company to create a customized printing plate for your project. With current technology, offset printing machine plates are quite inexpensive and simple to create, and they may be reused numerous times (or more, on occasion), which helps to reduce costs. It’s much less expensive per piece than direct printing, and the quality is unparalleled.

Printing materials assortment:
One of the most appealing features of an offset printing machine is that it can print on a wide variety of surfaces. Calfskin, vinyl, texture, metal, several types of paper and cardboard, wood, and plastic are all options for printing your assignment. Because you are not limited to merely paper, installing an offset printing machine can help you grow into a fantastic business.

Types of offset printing machines

01.

Sheet-fed offset presses

It use individual sheets of paper, which are fed through the press one sheet at a time. These presses produce short-run and on-demand printing jobs.

02.

Web offset presses

Web offset presses are much larger than sheet-fed presses and they can print a continuous roll of paper or other material.

03.

Digital offset presses

Digital offset presses allow for high quality printing at a lower cost than traditional offset presses.

04.

Flexographic presses

It uses flexible printing plates and can print on a variety of materials including paper, plastic, foil, and fabric.

What are the benefits of using an offset printing machine?

Quality

Offset printing produces sharper images with more accurate colors than digital or other printing methods. This is because the plates used in offset printing have greater resolution than digital images, and the result is a higher quality image that lasts longer.

Efficiency

Offset printing machines can produce large volumes of printed materials in much less time than other methods, such as digital printing. This means that larger orders can be filled faster and without as much manual labor involved.

Cost Savings

Offset printing is often more cost-effective than digital or other forms of printing because of the time saved with higher production speeds. Additionally, fewer materials are needed to produce the same number of prints, resulting in further cost savings.

Uses of Offset printing machine

Printing

It is also used for printing labels, packaging, cards, stickers, and other large-volume projects. Offset printing machines can be used for a variety of tasks including spot color printing, full-color printing, and four-color process printing.

Large scale printing

Offset printing machines are often used for large scale printing projects because of their high-quality output. They are capable of printing on a wide range of materials such as paper, plastic, metal, and even fabrics. This type of machine is also perfect for printing with multiple colors at once, which helps save time and money.

Printing high-quantity projects

Offset printing machines are also great for printing high-quantity projects such as business cards and booklets. They can print on both sides of the paper at once, which saves time and money in the long run. Additionally, they produce vibrant colors and sharp details, making them ideal for high-end projects.

Offset printing machine sizes

They are ideal for small jobs, such as business cards, flyers, booklets, postcards, and other small projects. They typically have a maximum sheet size of 14 x 20 inches (or smaller) and can handle one or two colors at a time

Small offset printing presses

They are great for medium-sized jobs, such as brochures, catalogs, magazines, and book covers. These presses can usually accommodate up to four colors and have a maximum sheet size of 17 x 25 inches.

Mid-size presses

They are perfect for large jobs, such as billboards, banners, posters, large books, and more. They typically have a maximum sheet size of 28 x 40 inches and can handle up to six colors at once.

Large presses

Certifications

Our Factory

We are now a main supplier of high quality automatic screen printers, hot stamping machines and pad printers, as well as automatic assembly line, UV painting line and accessories with R&D, manufacturing and sales. All our machines are built according to CE standard, considered one the most stringent standard in the world.

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FAQ

Q: What is offset printing machine used for?

A: Offset lithography is one of the most common ways of creating printed materials. A few of its common applications include: newspapers, magazines, brochures, stationery, and books.

Q: How much do offset printers make?

A: $42,500 is the 25th percentile. Salaries below this are outliers. $56,500 is the 75th percentile.

Q: What is the alternative to offset printing machine?

A: Flexographic printing is very, very similar to offset but with three major differences: the plates, the ink, and the material it's printed on. Digital printing is in a league of its own.

Q: What are the requirements for offset printing?

A: Resolution and Quality. One of the most important factors in image optimization is the resolution of your images. A higher resolution ensures better print quality. For offset printing, your images should have a resolution of at least 300 dpi when reproducing at 100% in the software.

Q: What is the difference between offset and flexo printing?

A: Flexo employs photopolymer plates, while offset typically uses metal plates. Imagine the difference between a sturdy, flexible yoga master and a heavy lifting weight trainer–that's practically the difference between the fast, flexible flexo printing plates and robust, durable offset printing ones.

Q: What is offset printer also known as?

A: Offset printing, also called offset lithography, is a method of mass-production printing in which the images on metal plates are transferred (offset) to rubber blankets or rollers and then to the print media.

Q: What colour mode is best used for offset printing?

A: CMYK
The reason offset printers use CMYK is that, in order to achieve color, each ink (cyan, magenta, yellow, and black) has to be applied separately, until they combine to form a full-color spectrum. By contrast, computer monitors create color using light, not ink.

Q: What image more do professional offset printers usually use?

A: Professional offset printers commonly use the CMYK image mode, which stands for Cyan, Magenta, Yellow, and Key (black).

Q: How many types of offset printing machines are there?

A: These types are wet offset printing and waterless offset printing, also known as dry offset printing. Wet offset printing uses water or other fluids to increase the adhesion of the ink or prevent adhesion in the areas that are to be left blank.

Q: What is offset printer also known as?

Q: What is 4 Colour offset printing machine?

A: The "four-color" in "four-color printing" refers to the four ink colors—cyan, magenta, yellow, and black (CMYK)—used in offset printing presses and many digital presses. These four colors are combined to make a wider range of colors.

Q: What are the three main offset printing cylinders?

A: Offset presses utilize three principal elements: the plate cylinder; the blanket cylinder; and the impression cylinder, which applies the paper, in sheets or a roll, against the blanket cylinder.

Q: Does offset printing use ink?

A: Offset technology uses a wide range of different inks, which can be categorized into six main groups: solvent-based inks, water-based inks, greasy inks, UV-LED-cured inks, EB-cured inks, and environmentally friendly inks.

Q: What is offset printing ink made of?

A: The most widely used offset printing inks are resin varnishes containing resins, such as alkylphenol resins, phenolic resins modified with rosin or maleic acid resins, which are dissolved in drying oils such as linseed oil.

Q: What is offset printer also known as?

Q: What is the fastest offset printer?

A: Heidelberg Speedmaster XL 106
New Heidelberg Speedmaster XL 106 Becomes 'World's Fastest Sheetfed Offset Press'

Q: How can you tell if a print is offset or digital?

A: Offset printing uses plates when transferring images, while digital printing does not use plates. Offset printing is typically used for longer print runs (minimum 1000 copies), while digital is mainly for shorter print runs of 1000 copies or less.

Q: What is the difference between offset printing and normal printing?

A: Digital printing requires less preparation, making it more cost-effective for short runs. However, offset printing, despite requiring more setup time and resources, is more cost-effective for larger runs due to the lower cost of ink and paper per unit produced by the press.

Q: When would you use offset printing?

A: However, if you are looking to print on an unusual printing surface and looking for a special texture, offset printing method continues to offer the most flexibility. Also, with offset, you are not as limited in the size of your piece unlike in digital printing where you can only accommodate a 12"x18" paper size.

Q: Is offset printing good quality?

A: This type of printing involves more preparation and setup time, and the final product must dry before finishing can be done, including binding, coating, saddle-stitching, laminating or folding. However, offset printing traditionally produces the highest quality available on the widest variety of paper stocks.

We're professional offset printing machine manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale offset printing machine for sale here from our factory. Good service and low price are available.

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