If a person waits long enough they can expect most anything to happen.
As I said, I have not observed this type of yellowing, and I have
carefully compared some papers that were gelatin sized to others that
were albumen sized. I did not see any difference. I don't question
the fact that it is recorded in the literature, but if I don't see it
at my house this is a non-issue for me.
On the other hand, for my work gelatin sizing is simpler, less
expensive, less trouble, and gives results at least as good, so that
is what I use.
Sandy
>In a message dated 21/07/2006 20:55:57 GMT Daylight Time,
>sanking@clemson.edu writes:
>
>>
>>I have not observed any yellowing at all of the papers that I have
>>sized with albumen. Perhaps it is a paper issue and not the albumen
>>itself?
>>
>>
>>In any event, the mechanism for yellowing of albumen prints is
>>pretty well understood to be primarily due to the formation of
>>silver sulphide from silver albumenate.
>>
>>
>>Sandy King
>>
>
>
>Sandy
>
>You may not have observed it but it happens. You have probably not
>coated paper with albumen for this purpose.
>
>As I said, yellowing of albumen occurs even when there has not been
>any silver anywhere near the albumenised paper.. This is recorded in
>the literature. It is no longer of particualr concern as there is a
>simple way of overcoming it which is also recorded in the literature.
>
>Terry
Received on 07/21/06-04:43:58 PM Z
This archive was generated by hypermail 2.2.0 : 08/31/06-12:23:48 PM Z CST