Changes

Thermal printers do not use any ink or toner.  Rater, they use direct-thermal paper, which turns black in response to heat.  These printers are limited to black printing only, and the final product can be destroyed sunlight, hot surfaces, or friction.  However, they are inexpensive and convenient for a number of purposes, including shopping receipt printing and label production.

Thermal printers do not use any ink or toner.  Rater, they use direct-thermal paper, which turns black in response to heat.  These printers are limited to black printing only, and the final product can be destroyed sunlight, hot surfaces, or friction.  However, they are inexpensive and convenient for a number of purposes, including shopping receipt printing and label production.

The most common form of thermal paper contains [[bisphenol A]], which raises health concerns because the substance transfers to the skin of the person holding the paper.  BPA is then absorbed by the skin to varying degrees.<ref>Sandra Biedermann, Patrik Tschudin, & Koni Grob, "Transfer of bisphenol A from thermal printer paper to the skin", ''Analytical and Bioanalytical Chemistry'', September 2010, Volume 398, Issue 1, pp 571–576</ref> Some thermal media also contains [[bisphenol S]], which although believed to be less harmful compared to BPA, is absorbed more easily this increasing the exposure quantity.<ref>http://saferchemicals.org/chemicals/bpa-bps</ref><ref>http://naturalsociety.com/toxic-bpa-substitute-bps-chemical</ref>

The most common form of thermal paper contains [[bisphenol A]], which raises health concerns because the substance transfers to the skin of the person holding the paper.  BPA is then absorbed by the skin to varying degrees.<ref>Sandra Biedermann, Patrik Tschudin, & Koni Grob, "Transfer of bisphenol A from thermal printer paper to the skin", ''Analytical and Bioanalytical Chemistry'', September 2010, Volume 398, Issue 1, pp 571–576</ref> Some thermal media also contains [[bisphenol S]], which although believed to be slightly less harmful than BPA, is absorbed more easily thus increasing the exposure quantity.<ref>http://saferchemicals.org/chemicals/bpa-bps</ref><ref>http://naturalsociety.com/toxic-bpa-substitute-bps-chemical</ref>

====Care and maintenance====

====Care and maintenance====