Epson TM-L90 Technical Reference - Page 164
Notes on Paper Handling
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Notes on Paper Handling Thermal paper handling Substances such as chemicals on thermal paper may cause color development or faded printing; therefore, pay attention to the following: ❏ Use water paste, starch paste, polyvinyl paste, or CMC paste when gluing thermal paper. ❏ Volatile organic solvents such as alcohol, ester, and ketone can cause discoloration. ❏ Some discoloration may occur, depending on adhesive materials. Printing may be faded, depending on materials of tapes. ❏ If thermal paper touches anything that includes phthalic acid ester plasticizer for a long time, it can reduce the image-formation ability of the paper and can cause the printed image to fade. Therefore, when storing thermal paper in a card case or sample notebook, be sure to use only products made from polyethylene, polypropylene, or polyester. ❏ If thermal paper touches diazo copy paper immediately after copying, the printed surface may be discolored. ❏ Thermal paper must not be stored with the printed surfaces against each other because the printing may be transferred between surfaces. ❏ If the surface of thermal paper is scratched with a nail or hard metal object, the paper may become discolored. Notes on storage Since discoloration begins at 70 °C {158 °F}, thermal paper should be protected from high temperatures, humidity, and light, both before and after printing. ❏ Store paper away from high temperatures and humidity. Do not store thermal paper near a heater or in enclosed places exposed to direct sunlight. ❏ Avoid direct light. ❏ Extended exposure to direct light (as with placement of the printer near windows) may cause discoloration or faded printing. ❏ When the printer is not used for one week or more, it is recommended not to leave the thermal paper between the platen and the print head. 164 Appendix
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