How to Perform Troubleshooting on Gravure Printing

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How to Perform Troubleshooting on Gravure
Printing
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Introduction

• In order to improve the quality of their printed
  products while maintaining the costs necessary to
  bring the product to market, gravure printers
  have historically been on the cutting edge of
  technology. They have incorporated newer, faster
  presses, more dependable and durable components
  and consumables, and cutting-edge control
  systems. Gravure printers nevertheless encounter
  a variety of print-related problems that prevent
  them from achieving their cost and quality
  objectives despite taking these measures. This
  troubleshooting manual was created by a variety
  of providers and manufacturers to the gravure
  print industry with the goal of assisting you in
  determining the issue's root cause and offering a
  workaround.
• Flexo CtP Systems. Miraclon. Cron. akk. Is the
  earliest Gravure Printing Cylinder Supplier in
  India.

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1. Fixing the hue shift

• Consult the department of cylinders first.
  Verify the register and that the cells are set up
  correctly. Adjust the electric eyes, then turn
  down the dryer's temperature, and finally fill
  the fountain with new ink (and add less slip
  compound).

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When ink dries on the cylinder walls, it is known
as drying in. There are normally only two reasons
for this improper press conditions or ink that
dries too quickly. There are several things you
may do to improve the press conditions,
includingExamine the oven's temperature, air
flow, and blade angles.Clean the cylinder, take
away the attached spot air system, Aerated
fountains, increase the press's pace.Add a
slow-drying solvent, reduce the viscosity, and
alert the ink provider if the ink is drying too
quickly.
2. Address drying issues
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3. Have a plan for dealing with
an uneven appearance

• The paper surface, big cells in the
  cylinder, pressure on the impression roller, and
  too thin ink can all contribute to the formation
  of dark and light patches that are referred to as
  puddling, mottling, and volcanoes. The problem
  may be resolved by adjusting the roller,
  consulting the cylinder department, or altering
  the ink viscosity.

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4. Quit scuffling your tracks.

• The ink itself, the press environment, or
  the paper are likely to blame for any scratches
  or scuffs in the ink. 
• What you can do to solve the issue is as
  follows
• Add hardeners or wax to the ink.
• Examine and correct the ink viscosity.
• Change the solvent system to improve the
  integrity of the ink film.
• Boost the oven's setting.
• Verify the paper's abrasion.

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5. Don't Allow a Strike-Through to Depress You

• MARS

• Increase the ink viscosity, oven temperature, and
  airflow while lacquering the cylinder and adding
  a pigment extender. If it doesn't solve the
  issue, it might be the paper itself, and the
  solution is to use less absorbent paper. If not,
  it might be the ink holdout, in which case you
  should speak with the producer.

• Despite being red, Mars is a cold place

• SATURN

• Saturn is the ringed one and a gas giant

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6. Modifying Color Intensity
By lacquering a portion of the cylinder to reduce
cell capacity, speaking with the cylinder
department, adding solvent to lower the ink's
viscosity, and adding a clear extender, you can
fix the issue of too much color.The following
are some potential fixes when the color is too
weak-By re-etching the cylinder, increasing
cell volume-Raising the viscosity of the
ink-Cylinder cleaning-Diminishing the
angle-Swapping out the roller-Removing
toner-Examining the automatic ink batcher
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7. Increase Ink Volume
Enhance the starting process to minimize waste,
use less absorbent paper, modify the ink-solvent
ratio to achieve the required viscosity,
reformulate the ink if it is absorbing the stock
too quickly, and inquire with the manufacturer
about the ink gravity values.
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8. Prevent Frothing and Foaming of Ink
First, instead of letting the ink fall, try
introducing it to the pan through a hose. Next,
check the pump for leaks or slow down the pump to
minimize agitation. You might also experiment
with changing the ink's viscosity or adding a
defoamer substance.
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9. Modify Gloss Levels
If the gloss is too high, either use a coloured
extender or add a solvent to lessen viscosity.
Add a gloss extender, raise the viscosity, or use
less solvent to increase low gloss.
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10. Make sure color reproduction is consistent.
Here are several ways to troubleshoot color
fluctuation, which can be caused by a variety of
problems -For all operators, adopt a single set
of processes. -Utilize measured amounts
only. -Calibrating or equating the flow
rates -Inspect and clean the machinery in between
presses. -Use inks with similar strengths
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THANKS!

• Do you have any questions?

• info_at_primetechgravures.com

• 91 8802712255

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