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 Post subject: HELP! Cylinder 15
PostPosted: Sun Oct 10, 2010 7:00 pm 
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Joined: Fri Aug 27, 2010 6:00 pm
Posts: 148
Dear All KE enthusiasts,

Does anybody have any cylinder blocks of halfpenny green, cyl.15, both stop and no stop?

According to Kirk, there are two states producing three different blocks. These are, with stop (just a single state) and no stop first and second state. However, I think Kirk might have meant two states of with stop, and a single state of no stop...

If any kind person(s) would kindly scan their blocks and post them, I'd be very grateful indeed.

Thanks a ton!

Cheers, Robin Restall


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 Post subject: Transfer from previous board: original post 1424
PostPosted: Mon Oct 11, 2010 7:00 pm 
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Joined: Sat Sep 19, 2009 6:00 pm
Posts: 191
Image

Hello Robin,
Heavy rain here has meant a day indoors and I have been poring over Kirk and have finished up quite confused about the various states of this cylinder.
I think you are right about one state of the stop and two states of the no stop.
However, looking at my scans the second state seems to be on the stop block.

See what you think of these anyway.
Hope it helps a bit.
Regards.
Ron.


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 Post subject: Transfer from previous board: original post 1425
PostPosted: Mon Oct 11, 2010 7:05 pm 
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Joined: Fri Aug 27, 2010 6:00 pm
Posts: 148
Thanks Ron, Very helpful! Can you follow up with a scan of the whole block of 15 spot (if you have the six block), please? Once I get enough material I'll be able to explain what I'm trying to resolve.

All the best, Robin


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 Post subject: Transfer from previous board: original post 1439
PostPosted: Tue Oct 12, 2010 7:00 pm 
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Joined: Sat Sep 19, 2009 6:00 pm
Posts: 191
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Hello again Robin,
Herewith as requested - hope it is OK.

Ron


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 Post subject: Transfer from previous board: original post 1440
PostPosted: Tue Oct 12, 2010 7:05 pm 
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Joined: Fri Aug 27, 2010 6:00 pm
Posts: 148
Thanks Ron,

I THINK I can see a faint line running down the right side of 19/2 and 20/2. If you look at the attached, left side block, you should see it. Ignore the colour and contrast, I Photoshopped it to enhance the flaw, I call it tramlines. On this block it runs the length of the three stamps, but there's not a trace on the white between the stamps which leads me to suspect an interneg flaw rather than a doctor blade.

Over to you...

Robin R.


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 Post subject: Transfer from previous board: original post 1444
PostPosted: Wed Oct 13, 2010 7:00 pm 
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Joined: Sat Sep 19, 2009 6:00 pm
Posts: 191
Robin,
Yes, very clear on the left hand block.
I have checked through my collection and do not appear to have any examples.

Excuse my ignorance, but what is an interneg flaw?
I presume it is something to do with the negative, but what exactly?.

Ron.


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 Post subject: Transfer from previous board: original post 1446
PostPosted: Wed Oct 13, 2010 7:05 pm 
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Joined: Fri Aug 27, 2010 6:00 pm
Posts: 148
Well, I don't actually KNOW what I'm talking about!

As I think I understand it, the visual flat artwork for a sheet of stamps was assembled, photographed onto a film negative, copied onto another film so that the image is positive, and then that was "printed" onto sheet metal where it looks negative. When that metal is inked and pressed on paper the resultant paper print is positive.

It was during that intermediate film negative stage that many flaws occurred - and were not easy to detect. A flaw like the "Tramlines" on that cyl 15 block could have happened by, say, a flat-sided pencil dropping onto the film, or maybe there was even a flaw in the gelatine.

Nowadays printing processes are digital and computer-controlled, but 70 years ago it was comparatively cottage industry!

Anyway, if anybody with real understanding of that process can correct me, or explain better - please don't hesitate!

Cheers, Robin R.


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 Post subject: Transfer from previous board: original post 1461
PostPosted: Thu Oct 14, 2010 7:00 pm 
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Joined: Sat Sep 19, 2009 6:00 pm
Posts: 191
Robin,
Well, there's honest isn't it? (grin)

I think I have grasped at least the gist of what you explained and such a
pity I have not had the opportunity of being on a guided tour of a printing
works.

Wouldn't it be nice if there was a dvd which showed the various printing
processes in easy stages for such a tyro as myself to be able to understand.
I know it is complicated but seeing it happening "in the flesh" as it were
would make it a lot more understandable.

Maybe there is such a thing available, but then again, perhaps it would make
things easier for "forgers" to understand and duplicate.

As you say, things have changed drastically in printing (as in most things)
so the processes are so much different today.
Regards
Ron.


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