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APPENDIX A. NOTES ON PAPER HANDLING

A.1 Notes on 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.

A.2 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.

A.3 Notes on Two-Color Paper Handling

• Two-color printing can be performed by selecting two-color paper with the memory switch

(customized value) and using two-color paper as the print paper.

• In two-color printing, the hue might not be clear, depending on printing patterns.

• The reliability of two-color paper differs from that of single-color paper.

TITLE

TM-L90

Roll Paper

Manufacturing Guide

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NO.

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