GB/T 21185-2007 Information technology—Office machines—Method of specifying image reproduction of colour copying machines by analog test charts—Realisation and application

Scope

This standard applies to the production and application of test charts for color copiers. This standard, as a testing standard for the image printing performance of color copiers, is designed to better confirm and compare the performance and limitations of various copiers. When testing copiers using this standard, at least two of the eight test charts (one black-and-white and one color) should be used. The printed copies can be visually inspected, compared with the test charts, and subjected to objective measurement. The eight test charts of this standard include four halftone test charts (one photographic, three offset) and four continuous-tone test charts (photographic). All analog test charts produced in accordance with this standard have a validity period of three years.

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