Kodak D-32 - Manual (Page 4)

D-32 September 2009 3
Common features
The following features are common to all Kodak Duplicating Microfilms:
• Life expectancy of 500 years (LE-500) when processed and stored properly,
compared with 100 years (LE-100) for nonsilver duplicating films such as
diazo and vesicular.
• Ultra-high resolving power.
• Static-resistant, process-survivable backing.
• Micro-fine granularity.
• Very slow speed.
• Manufactured process is registered to ISO 9000.
• Manufactured to ANSI and ISO standards specifications for films to be used
for storing records of long-term or permanent value.
The following “duplication tree” illustrates how the various duplicating
microfilms are used to produce the desired contrast and image polarity of
distribution copies. As an example, 3N is showing 3rd generation negative-
appearing distribution copies.
KEY:
CN = Camera Negative
1 = 1
st
generation
2 = 2
nd
generation
3 = 3
rd
generation
N = Negative polarity
P = Positive polarity