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适用范围：<p id="s00010">Dry electrostatic heat-fixing toners may be composed of polymer binders, black pigments, and other such additives that are necessary for the proper performance for the use intended, particularly in those copiers using heat-fusing techniques for image fixing. Toners characteristically do not have a sharp melting point but instead exhibit a broad temperature range of melting.</p> <p id="s00011">The user should be aware that the fusion point is one of several physical characteristics of certain heat-fixing toners. Similar fusion temperature results obtained through this practice on two different toners (between lots or from one manufacturer to another) should not be considered a guarantee of equal performance characteristics when subsequently utilized in a copier.</p><p>1.1 This practice covers a procedure that is used to determine the fusion temperature of dry electrostatic heat-fixing toners using a micro hot stage.</p><p>This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. <med>See Section for specific precautionary statements.</med></p>