Image stability measures the change in the way the print originally
looked compared to how it will look when subjected to use or storage
conditions. The goal is very little change.
Kodak uses photographic prints to benchmark image stability because
of their high image quality, print appearance, feel, and image permanence.
Various factors influence photographic print image stability, for
The best way to determine print image stability is to conduct
long-term testing under normal conditions. To shorten this process,
Kodak accelerates the testing under controlled illumination, temperature
and humidity conditions.
Thermal dye transfer technology rivals traditional photography
for print image quality and appearance, especially when the thermal
dye transfer print is laminated.
XtraLife Color Ribbons
produce thermal prints with excellent image stability -- suitable
for indoor display at normal illumination levels. Prints made with
Kodak Professional Ektatherm XtraLife Color Ribbon
and displayed in a typical home or business setting should have
an image stability comparable to silver-halide color prints. (Note:
the image stability of silver-halide, black-and-white prints is
superior to color prints because the image base is silver rather
To achieve maximum performance from your thermal dye transfer
Avoid exposure to direct sunlight for
extended periods of time. This applies to all print materials containing
Avoid exposure to temperatures greater than 90°F
(32°C) for extended periods of time. On a hot summer day,
the temperature inside a car with closed windows can reach 160°F
Avoid contact with materials containing plasticizers, for
example, polyvinyl chloride (PVC or vinyl) sleeves. This is especially
important if the prints do not contain the protective laminate overcoat
material provided by
Ektatherm XtraLife Color
Do not touch the printed area with your bare fingers. Body
oils and lotions cause chemical reactions, which result in print
discoloration. This is especially important if the prints do not
contain the protective laminate overcoat material provided by
Ektatherm XtraLife Color Ribbon.
For optimum long-term storage, store at cool temperatures
of 50°F to 70°F (10°C to 21°C)
and at a relative humidity of 30-50%. Do not allow moisture
to condense on the prints.
Kodak, Kodak Professional, Ektatherm, and XtraLife are
trademarks of Eastman Kodak Company.
Technical Information Bulletins provide information of limited or specific application. Responsibility for judging the applicability
of the information for a specific use rests with the end user.