Offset has dots, inkjet a different pattern, you'd need to see ideally.
That's assuming the genuine item should be offset, not stone-litho,
different stuff to look for again.
On 7 Oct 2009, at 03:11, Steven F. Poole wrote:
Hi Randy-
I don't want this to get lost in the midst of the other topic
taking off very quickly. I must have missed your earlier post.
What basic characteristics does photogelatin printing have as
opposed to inkjet? To the naked eye, is it kind of like this
comparison:
photogelatin = blu-ray
inkjet = dvd
In other words, clearer, sharper image on the card? More
saturation? Or does it indeed take magnification to tell. And if
so, what are we looking for?
Steve
Steve
----- Original Message -----
From: Randall Petersen
To: MoPo-L@LISTSERV.AMERICAN.EDU
Sent: Tuesday, October 06, 2009 6:47 PM
Subject: Re: [MOPO] Where to send Universal material to authenticate?
50x microscope --> photogelatin printing technique = authentic
vintage lobby card.
50x microscope --> inkjet or laser printing technique = fake
vintage lobby card.
Is this not the case?
If so, then authenticating lobbies is easy; heck, you can send them
to me and I'll do it for you. Photogelatin printing is very
distinctive on the microscopic level, as I've mentioned previously.
If not, please enlighten us and explain why not. For example, I
would be surprised to hear that someone has present day access to
this obsolete printing technology.
Randy
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