Kodak CIS-144 - Manual

March 2000
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CIS-144
©Eastman Kodak Company, 2000
November 1998
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CIS-164 CURRENT INFORMATION SUMMARY March 2000
•
CIS-144
Supplementary Information on
KODAK EKTAMAX RA
Professional Paper
KODAK EKTAMAX RA Professional Paper uses colored
dyes to form black-and-white images in prints made from
color and black-and-white negatives. It is designed for
processing in KODAK EKTACOLOR RA Chemicals for
Process RA-4 along with color negative papers.
The information in this publication supplements the
information provided in the instruction sheet and in KODAK
Publication No. G-22, KODAK EKTAMAX RA Professional
Paper.
CHARACTERISTICS AND APPLICATIONS
Suggested uses for EKTAMAX RA Professional Paper
include intermediate applications for graphics reproduction,
displays, real-estate brochures, publications, press releases,
and portrait proofs. The paper may also be acceptable for
other applications in which long-term display and keeping
are not required. In applications that require archival or
long-term keeping or complete image neutrality, a traditional
black-and-white paper is a better choice.
STORAGE AND HANDLING
Store unexposed paper at 13°C (55°F) or lower in the
original sealed package. High temperatures or high humidity
may produced undesirable photographic changes. Storage of
unexposed paper at room temperature will produce a hue
shift over time (see “Effects of Storage Conditions”).
Avoid moisture condensation by removing the package
from cold storage the day before printing.
Handle paper carefully by the edges. The paper is
packaged with the emulsion side of all sheets facing in the
same direction. For complete light and moisture protection,
use the inner bag and the two-part cardboard box to store the
paper.
EXPOSURE RECOMMENDATIONS
The spectral sensitivity and printing speed of KODAK
EKTAMAX RA Professional Paper are designed to be the
same as those of KODAK PROFESSIONAL PORTRA,
SUPRA, and ULTRA Papers. Therefore, printing
EKTAMAX RA Paper should be very similar to printing
KODAK PROFESSIONAL Papers. If you are printing color
negatives and have a balance setup for those color papers,
you can use that setup for EKTAMAX RA Paper. An
adjustment of filtration from that balance will not change the
hue of EKTAMAX RA Paper, but it will cause a change in
contrast.
If you are printing black-and-white negatives onto
EKTAMAX RA Paper, two methods can provide suitable
results:
• Put a piece of processed D-min from KODAK
PROFESSIONAL PORTRA Film in the exposing beam
along with the filters you normally use to print color
negatives.
• To the filtration that you use to print color negatives,
add 35 units of magenta and 65 units of yellow filtration
to simulate a piece of film D-min.
If you do not have any processed D-min from
PROFESSIONAL PORTRA Film or a starting filter pack, a
filter pack of 80M + 110Y is a reasonable starting point.
LATENT-IMAGE KEEPING
You should not notice shifts in the latent image with keeping
times from 1 minute to 24 hours. Therefore, you do not need
to change your printing procedures to compensate for
latent-image shifts under normal temperature and handling
conditions. (If shifts do occur, you can minimize their effect
by keeping the time between exposure and processing the
same for all paper.)
IMAGE HUE
The term “hue” usually doesn’t apply to untoned
black-and-white papers. However, this paper can exhibit
slight variations in hue because it uses colored dyes to form
images. When we use the term “hue” in this publication, we
are referring to the image tone (or image-tone neutrality) of
prints. We will use hue interchangeably with image tone to
describe images that vary slightly from neutral.
Those who view prints on this paper expect them to appear
neutral. Therefore, viewers are more sensitive to hue
variations in prints on EKTAMAX RA Paper than they are
to hue variations in color prints.
The most likely contributor to hue variations is the color
quality of the viewing light. However, improper storage
conditions and some processing problems can also cause
variations in hue. (The references to hue in the following
sections are based on tests made in the school-finishing and
commercial markets.)