Sugar-coated tablets

Preparations - Sugar-coated tablets

Sugar-coated tablets and film-coated tablets are a common product type in the pharmaceutical market. Both offer various advantages – the coating can mask the taste and smell of the medicine. In addition, different consumers often find them more pleasant to swallow. Also, the colour can increase drug safety, protect the active ingredient and provide some gastric juice resistance.

Object-specific challenges

Product features

Sugar-coated are often lenticular, which can lead to various colour defects in the colour recognition when tilted. The coating may also show colour stains and small flakes, which are visually unattractive but do not necessarily represent a quality defect.

Recommended inspection system for sugar-coated tablets

For the detection of small colour differences and the inclusion of possible colour shading due to curved surface, scanware recommends the blister inspection in colour, SPECTRA CL. If Japan Quality is to be inspected, the use of SPECTRA High Resolution with water cooling is recommended.


Highlights of the colour inspection system 

  • Very high speed and a variety of analysis tools
    All parameters can be applied simultaneously – at the same high speed
  • The SMD-W-LED illumination is homogeneous, reproducible and adjustable in 16 brightness levels
  • Best hardware and comprehensive software package based on the QNX® real-time operating system
  • The system can be upgraded in software and hardware to high-resolution product inspection at any time

Inspection criteria

The following criteria can be inspected:

  • Colour
  • Presence
  • Size
  • Shape
  • Position
  • Circumference
  • Fragments
  • Overfill
  • Consecutive errors

When upgrading to SPECTRA HR in Japan quality:

  • Lacquer defects
  • Particles on tablet or lacquer
  • Surface defects
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Further preparations from scanware

Inspecting the presence, integrity and quality of the ampoule's ring code.

Inspection of the presence and colour of the cap and the presence of the label.

Three-dimensional inspection excludes missing layer and offers highest safety.

Solutions for the optical inspection of fragmented and broken pastilles.

Inspection before or after sealing, reflections are compensated.

Solutions for every conceivable product and film combination as well as product shape.

Inspection of the active ingredient patches to check size, position and packaging.

For hard gelatine capsules scanware offers a range of specified test parameters.​

Special algorithms for position at high oblongs increase productivity.

3D inspection for powders in very small quantities with specially developed algorithms.

Software based on artificial intelligence for the inspection of syringes.

Inspection of cap and presence of label, also in mixed blisters.