How to preserve your glass plates ?
|My first recommandation, probably the most
important one, will be to store your glass
plates in a dry and temperate room. To be clear,
avoid your cellar or attic.|
|It is tempting to preserve your glass plates in their original
cardboard boxes. This is clearly not a good idea because these boxes are
today at the end of their life and most of them are in a poor condition.
Moreover, these ones are made with acids and solvents which will
inevitably destroy the emulsion of your precious plates.|
Personally, I'm using acid free envelopes type CHRONOS with 4
flaps to protect my glass plates. I'm purchasing these ones on the
Conservation. These acid free envelopes are available in different
sizes 9x12 cm, 13x18 cm, etc... When wrapped in these acid free
envelopes, I'm storing my glass plates in archive boxes pHibox DUO model
PM which exist in the same sizes as the envelopes.
These items are not very expensive and will keep your precious glass
plates safe for several decades.
How to scan a glass plate without having a print of it ?
Glass plates are quite difficult to scan especially if they are thick and
if the emulsion is not contrasted enough. After several tests, here is the
process I would recommend :
|Use a scanner equiped with a back-lited window (e.g. HP Scanjet 4890
|Put the glass plate on the scanner, emulsion must be in contact with
the bottom scanner glass. |
|Digitalize in million colors mode, resolution of 300 dpi and an
enlargement of 100%.|
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