• Gloss Differential is similar in nature to bronzing, but occurs in the lighter areas of
prints. It is a difference in the glossiness of uninked paper and adjacent inked areas. It
is only an issue with Gloss and Luster surfaces. A few printer models offer a gloss
optimizer option, which applies an unpigmented ink to blank areas to reduce gloss
differential. Other recent printers utilize high gloss inks which also minimize the
difference in gloss between printed and unprinted areas. Gloss differential cannot be
controlled through choice of media settings, nor through using ICC profiles. If your
gloss and luster prints exhibit gloss differential, and you find it undesirable, then
consider changing papers, inks, or printers to find a more acceptable result, or spray
your prints with a quality archival fixative overspray after printing. This reduces gloss
differential, while at the same time providing increased water resistance, and in most
cases longer print life.
Analyzing Photo-Content
The photo content in the Media Setting Check Print allows for checking how well a
media setting’s gradiations and densities represent photographic content. A color cast
is not important here, as that can be corrected with the profiling process, but
problems with blown out hightlights, overinked dark areas, or posterization (visible
steps where none should be present) are more difficult for a profile to compensate for.
The above image shows good photo content.
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