International Organization for Standardization (ISO)
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ISO/IEC 19799:2007
Scope
The scope of this International Standard is to define methods and processes of measuring objective printquality
attributes for the assessment of gloss non-uniformity on printed pages in reflection mode, and to
provide transforms, when applicable, that relate the objective results to subjective responses, if appropriate.
There are many existing standards (see Normative references and Bibliography for details) typically used for
gloss measurement. Our intent is to leverage the existing standards and adapt those for use on gloss
uniformity measurements where appropriate.
This International Standard is composed of a standardized test methodology, which is based on established
gloss measurement methodologies as noted in Clause 2 and in the Bibliography. The methodologies have
been modified so that, when applied to printed pages created by different marking technologies and imaging
algorithms on different substrates, the results indicate the level of the objective gloss uniformity of the printed
pages (in reflection mode). If the objective measurement can be linked to the subjective impression of gloss
uniformity, then the linkage from objective measurement to subjective impression via mathematical transforms
is provided. The reflection prints that are to be used as the subject of these tests can be created via printers or
copiers (analog and digital). This International Standard should be applied only to electro-photographic bases
prints. When more reflection prints made by other printing technologies become available for follow-up study,
one may consider including those printing technologies in this International Standard as a revision. This
International Standard does not address the measurement of gloss attributes of printed pages in transmission
mode.
Gloss uniformity attributes currently included in this International Standard are: differential gloss, gloss
uniformity within a page, and gloss consistency within a run. Due to the current level of immaturity of
commercially available objective micro-gloss measurement instruments, gloss artefact attributes (such as
gloss grain, gloss spot, gloss streak, gloss band, gloss mottle/cloud, gloss moiré) are not included in this
International Standard at the present time, since instrumented measurement procedure cannot be
recommended at present. As instrumented measurement capability becomes available, they will be
considered for adoption into this International Standard as a revision.
ISO/IEC 19799:2007 history
2007ISO/IEC 19799:2007 Information technology - Method of measuring gloss uniformity on printed pages