Abstract
Conversion of analog to digital technology is occurring at an ever increasing speed in the commercial printing industry. Digitally printed papers, as a consequence, are becoming a larger proportion of the incoming waste paper stream to the recycling industry. Deinking of digital prints involve deeper understanding of the ink and their interaction with various types of substrates. In this paper, a comparative study of alkaline deinking and neutral deinking of LEP prints with a variety of substrates is presented. The results show that the preferable neutral chemistry is always successful in deinking, while the alkaline chemistry appears to be more complicated.
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