A Guide to Solving Problems Caused by Offset Printing Ink

Those on the lookout to buy offset printing machines may contact Printoholic, an eminent dealer of printing equipment.

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There are various aspects that go hand in hand in producing good quality printing on new & used offset printing machines. Ink is just one of these components. While working with offset printing ink, one may encounter a number of problems, such as high dot gain, piling, ghosting, scumming, doubling, slurring, non-gear streaks, and many more. Let’s have a look at some of these issues and their related solutions:

  1. High Dot Gain

This may be caused by two reasons – low viscosity of ink or improper balance of ink & water. In the first case, one may opt for increasing the viscosity, which may render an improved quality. Alternatively, one may also go for a complete change of the ink. In the second case, it is advisable to run minimum water and the minimum ink for attaining the proper density. At times, owing to specific properties of the ink, it may not create a proper balance with water. Hence, one should ensure to take a certificate of analysis from the ink manufacturer and make a note of the values that may suggest its water pickup attributes. Of course, high dot gain may also occur as a result of improper pressure settings, chemistry, or even plates.

  1. Piling

Poor ink and water balance is one of the major reasons behind piling on an offset printing press. To correct this, one may make use of anti piling agents that may be added to the fountain. One may also consider running the water just above the minimum level.  Poor quality of the paper may also cause the occurrence of piling.

  1. Low Ink Mileage

There may be several factors triggering this problem, such as high density of ink, rapid penetration into the paper, and low pigment strength. To avoid this scenario, one should ensure usage of quality ink and paper. Further, one needs to make sure to run only the required density and minimal amount of water.

Of course, there are several other problems that one may face in this aspect. Those in search of used offset printing machines in good condition may get in touch with Printoholic, the country’s largest dealer of printing equipment. Here’s a guide on Which One to Buy? Offset or Digital Machine from Importer of Printing Machine in Delhi.

The 3 Major Drivers of Successful & Flawless Die-Cutting Results

For utmost precision and high-quality results, one may make use of new or used Bobst die-cutting machines.  

Used Bobst Die Cutting MachinesToday’s label production industry makes use of the rotary die-cutting procedure. This is primarily because in comparison with the flat-bed process, the rotary method demands lesser pre-tension, ensuring that the material is processed seamlessly, and that too, at great speeds. Owing to high customer demands, label printers are always in a hurry to complete their jobs. This makes die-cutting a challenge for them. Further, it is also essential to produce flawless results. For all those who are involved in the rotary cutting process, here’s an insight on the 3 major drivers of achieving high quality results.

  1. The material itself

If we look around, we will see a variety of self-adhesive labels being used day in and day out. These may range from personal care products, to medicine, food & drink items, retail, office stuff, logistics, and much more. These adhesives are basically multi-layered materials, having a printable face material, which is bonded with a siliconised backing material, by making use of an adhesive layer. The final die-cutting result will depend upon the thickness of this siliconised backing layer and the type of the material.

  1. The cutting unit

To get optimum results, one needs to ensure that the cutting unit is in perfect condition. It should be free from contaminants and wear & tear. Further, the gap is of paramount importance here. The gap is defined as the distance between the magnetic and anvil cylinders. Then, the initial pressure (or the pre-tension) also plays an essential role in ensuring precision. The use of a pressure control system makes things easier, as it aids in evenly adjusting the pressure on both sides of the cylinder. One may install new or used Bobst die cutting machines for great results.

  1. The cutting tool

Just like the unit, the tools should also be free from wear & tears and contaminants. Various tools are used depending upon the material, unit, and the application.

Those on the lookout for used Bobst die-cutting machines in India may get in touch with Printoholic, a reliable dealer for all types of printing and allied equipment. Here’s All You Wanted to Know About Bobst and New & Used Bobst Die Cutting Machines.