This test method describes the procedure for determination of both surface and volume (bulk) d-c resistivity of writing paper. This test method is specific for the Keithley 6105 resistivity adapter.
Formerly under the jurisdiction of Committee D06 on Paper and Paper Products, this test method was withdrawn in January 2011 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
Значение и использованиеPaper generally is considered to be a material having good electrical insulating characteristics; for example, relatively high resistivity when dry. However, in certain applications, control of electrical resistivity to within specified limits is an important function, and resistivity measurement techniques are required.
While it is possible to measure resistivity using a variety of instruments (Test Methods D 257
The power supply and electrometer referred to in this method are manufactured by Keithley and the procedure describes their use. It is believed that comparable equipment manufactured by others would serve the same purpose. The precision statement was developed with Keithley equipment.
The control of resistivity is of special importance on high-speed nonimpact printing machines where that characteristic will affect printing, machine feeding and handling, or both. Resistivity is important in the image transfer function of a nonimpact printer or copier using the electrophotographic process. Resistivity is an important factor in controlling static buildup on high-speed nonimpact printers and copiers.
Область применения1.1 This test method describes the procedure for determination of both surface and volume (bulk) d-c resistivity of writing paper. This test method is specific for the Keithley 6105 resistivity adapter.
1.2 This test method has been developed as a special case for use on writing papers processed in high-speed nonimpact printers where resistivity control is critical. It is not in conflict with Test Methods D 257.
1.3 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.