This policy statement will be incorporated
into the department's Migrographics Policy Manual.
Rationale
The department is unable to ensure
the continuity of trained staff and appropriate information technology in the
offices of local government officials. Given this reality, the department recognizes
that there is a clear benefit in having an eye readable copy of a public record
available to users who may not have access to the electronic version of that
record. With this in mind, the Department for Libraries and Archives issued
Policy Memorandum PM 96-1 requiring a hardcopy, eye readable backup to all digitally
imaged records with retention values of longer than ten (10) years.
The department encourages the practice
of producing archival quality microfilm directly from the digitized record as
the easiest and most economical method of meeting this standard. However, microfilm
produced in this manner presents some unique challenges not common to film produced
in the traditional way. This additional policy statement is therefore necessary
to provide measurable standards that will ensure that archival quality.
Policy
The format of the microfilm shall
be such that people with access to microfilm readers can readily find items
on the film by using the index, in the same way they do now with microfilm created
from paper systems. These microfilming procedures shall not be a substitute
for normal system backup procedures. Rather, they are regarded as an additional
safeguard for permanent records of a critical nature.
The Kentucky Department for Libraries
and Archives’ standards for microfilm produced from scanned images have
the following elements:
Microfilm type: The microfilm produced
must be silver halide, processed for archival storage. This is a standard previously
adopted by the Kentucky Department for Libraries and Archives, based on Association
for Information and Image Management (AIIM) guidelines.
Indexing: The content of all the
index fields associated with the images on individual rolls must be recorded
on the microfilm. Images on the film should be preceded by an alphabetical index
of all recorded names on the roll. This index must provide a numeric reference
to frames on the microfilm containing records in which the names appear.
Order of the Images and Frequency
of Copying: The prevailing method accepted by the user community (book and page
for recorded instruments) shall be used. Only one record series can be placed
on a roll unless a specific exception to this rule in granted, in writing and
in advance, by Kentucky Department for Libraries and Archives. The microfilm
copies shall be made when sufficient records have been scanned to fill a complete
roll(s).
Title Targets: Eye-legible titling
information must include the following: (1) name of agency; (2) records series
title; (3) span date(s) of records; and (4) starting and/or ending indexing
information.
Resolution target sheets: The test
chart used for scanner maintenance (IEEE Standard 167-1987 Facsimile Test Chart)
must be scanned at a weekly interval and placed at the beginning and end of
the appropriate microfilm rolls in order to permit quality control resolution
testing. The scan chart at the beginning shall correspond to the week of the
earliest scanned record on the roll and the one at the end shall be scanned
during the week of the last scan on the roll. This scan chart can be obtained
from AIIM. The date that each chart was scanned must be displayed on the film.
The acceptable range for film resolution
is one hundred (100) lines per millimeter (LPM). KDLA quality control testing
will evaluate the microfilm version of the scanned Facsimile Test Chart referenced
above. The line direction method will be used to calculate resolution with a
50X to 150x magnification microscope; the lines per millimeter of the smallest
pattern which can be distinguished or resolved is then multiplied by the camera
reduction figure to calculate the overall LPM.
Density: The minimum background density
for Computer Output Microfilm (COM) produced microfilm is 1.90 or higher. This
is a previously accepted state standard, established by Kentucky Department
for Libraries and Archives and following AIIM standards.