LESSON 1
is quite a time advantage when you use hypo clearing agent.
Due to the
extremely short wash time required by RC papers, the use of a clearing agent
is not needed.
d. Once the prints have been washed, drying will complete the process.
For fiber-based papers a drum dryer is needed. Drying is done very simply
by placing the prints on the drying apron one at a time. If glossy prints
are required, place the prints face up, all other prints will be placed face
down on the apron. The average temperature is 180 degrees F at a speed of 4
or 5 FPM.
The speed will vary as the drum is cooled by the wet prints.
When the prints are done, they will drop into the print basket on the front
of the dryer. RC paper cannot be dried using the drum dryer. The plastic
coating will melt and the print will stick when contact is made with the hot
drum.
Special RC dryers which use a hot air circulation system are
available for these types of paper.
Learning Event 5:
DESCRIBE EKTAMATIC PRINT PROCESSING
1. Ektamatic printing process.
The need for rapidly produced prints of
acceptable quality for facilities that support photojournalism is a taxing
responsibility. Timely completion of many projects is possible only through
the Ektamatic print processor being employed.
The damp-dry print it
produces is usable and has an adequate life-span for layout and
reproduction.
a. Stabilization is the term applied to the photographic process which
uses developer-impregnated paper, a developer activator, and a stabilizer
for fixing the developed image. Special materials and processing equipment
have been produced for this purpose.
This section describes the basic
principles of stabilization processing as they are related to the Ektamatic
SC (selective-contrast) paper and the Ektamatic Model 214K processor (EH-
91A).
b. Paper for stabilization processing. The paper and emulsion used for
stabilization processing is similar to that used in conventional processing.
Ektamatic SC paper is virtually identical to Kodak Polycontrast paper except
for the processing ability. The primary difference is the presence of dry
developing chemistry within papers used for stabilization processing.
In
addition, this type of paper is not available in as many variations of
weight, sensitivity, and surface characteristics as normal paper.
(1) As a variable contrast paper, it requires the Kodak Polycontrast
filter kit to achieve different degrees of contrast.
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