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was already in use for printing (from wooded blocks) at the time of
Gutenberg developed his movable type system. Early inks consisted of
lampblack or soot mixed with animal glue or vegetable oils. Ink making
became a highly developed art among the Chinese.
- Much of the success
of Gutenberg’s invention of printing is due to the special ink he
developed for transfer to and from the cast metal type.
- The ink"varnish" or
vehicle is generally cooked in large kettles at 200 to 600°F (93 to
315°C) for an average of 8 to 12 hours in much the same way that regular
varnish is made.
- Mixing of the pigment
and vehicle is done in dough mixers or in large agitated tanks. Grinding
is most often carried out in 3-roller or 5-roller horizontal or vertical
- Varnish or vehicle
preparation by heating is by far the largest source of ink manufacturing
- Printing ink from
vegetable oils is a good replacement for the mineral-based ink used
currently. “It will reduce the organic compounds released during
printing,”.It dries faster and gives a good image quality.
- Colouring dyes and
additives such as aluminium chelate were then added to the mixture. A
similar experiment was carried out with mineral oils as well, it was found
that the products using vegetable oils—rice bran oil and palm oil—produced
better results in terms of stability, and quality of print.
- The growth of the
printing ink sector has been very fast. The production of printing ink had
increased from around 7300 tonnes from the beginning and to nearly 20,000
- Market growth for
vegetable inks is quite encouraging. Although the cost of the ink will be
8-10 per cent more than mineral oil-based product, it will avoid a lot of
occupational problems, including improving the health of printing workers.
- PRINTING ink industry
is seen augmenting its turnover on the back of a strong growth in its
user industries such as newspaper, flexible packaging and publishing
- Printing ink
requirement from these sectors has been expanding on account of the
buoyant growth and the overall economic upturn.
Newspaper ink recycling as it exists today - where waste
ink is processed by a machine at the newspaper printing plant, and then
used by that newspaper again.
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