The blue-grey thermal paper Blue4est
from Koehler completely does without with the use of chemical developers. Instead, a purely physical reaction is used. During printing, the functional layer becomes transparent under the influence of heat and the underlying black layer becomes visible. As a result, the receipts are environmentally friendly and approved for direct contact with food - ideal for retail and hospitality. They are also durable up to 35 years and may be easily disposed of in waste paper.Order the environmentally friendly Blue4est thermal paper with your sales representative! Call today!