Preservation Imaging Records Management Division
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Transcript of Preservation Imaging Records Management Division
Preservation ImagingRecords Management Division
MicrofilmMaster Negative Service CopyPrinting Master
Film Generations
Film Types Note
Master Negative Silver-gelatin film Should have a code stamped.
Printing Master Silver-gelatin film Both side is shinny, but one side is a bit dull.
Service Copy Diazo or vesicular film Very shiny on both sides.Can’t tear end.RMD uses Diazo film.
Service CopyMaster Negative
Microfilm
• Master Negativeo The film that is in the camera at the time of
filming. o It is duplicated once to make the printing
master, and thereafter kept in "archival" storage as a permanent security copy.
o It is also called “Camera negative”, “Silver master/negative”, “Original silver”, and “First-generation film.”
Printing Master
Service CopyMicrofilm
• Silver-gelatin filmo They will remain stable for 500 years IF
processed/stored according to ANSI.o Only Silver-gelatin films are appropriate for the
master and the printing master.
Printing MasterMaster Negative
Service CopyMicrofilm
• How can you tell if it is master?
Printing MasterMaster Negative
Ask Christy!
Why not Wayne?
How about Kim?
Service CopyMicrofilmPrinting Master
Master Negative
• Printing Mastero A duplicate made directly from the master
negativeo It should be kept in archival storage. It is used
to make all subsequent copies.o It is also called “Duplicate negative”, “Printing
negative”, “Silver copy/dupe”, and “Second-generation film.”
Service CopyMicrofilmPrinting Master
Master Negative
Cross Section of Silver-Gelatin Film
Source: Micrographic Film Technology, 4th ed.
Reduce scratching & staining
Capture the imageScratches easily
Service CopyMicrofilmPrinting Master
Master Negative
• How can you tell if it is Printing master?
Look at the film, silly!
MicrofilmService Copy
Master Negative Printing Master
• Service Copyo Positive or negative copies subsequently
available for research and lending.o It is also called “Use copy”, “Dupe”, and
“Diazo.”
MicrofilmService Copy
Master Negative Printing Master
• Diazo filmo It must be polyester based.o Generally appears blue or near-black.o It is vulnerable to fungal attack.o It may suffer significant damage upon exposure
to light for more than 3 hours in readers.
MicrofilmService Copy
Master Negative Printing Master
• Vesicular filmo It is polyester based.o Sign-reversing: if the master is negative-
appearing, the vesicular copy will be positive-appearing.
o It doesn’t develop redox.
MicrofilmService Copy
Master Negative Printing Master
• How can you tell if it is service copy?
Duh~ Read a label on the
box
Hands-on: Let’s Get Our Hands Dirty!