T205 Print? Oddity

[Abravefan11]

Originally Posted by Leon

Cool card Tim. What is your thought on how that back, gold'ish line was created on your card? Woops, I see it was most likely a wet sheet transfer....duh . So, I guess that other guess is probably correct and it is a WST......very good.

Actually I don't believe the image on the back of the T42 was created by stacking a sheet on another wet sheet. I think it happened on the press. It's just my opinion though.

[Leon]

Originally Posted by Abravefan11

Actually I don't believe the image on the back of the T42 was created by stacking a sheet on another wet sheet. I think it happened on the press. It's just my opinion though.

Wouldn't a press go the opposite way of that transfer though?

[Ronnie73]

I'm not sure of the exact printing method that was used back then. Maybe it was offset printing where a plate image transfers to a blanket cylinder and then onto the paper. If the paper is not fed, the blanket image will transfer to the impression cylinder. If that happens, a reversed image would print on the back side of the paper the same time the image is printed on the front. Normally the impression cylinder would be cleaned if a misfeed happened before feeding another sheet in to avoid the error reverse printing. This is most likely the reason for how detailed some wet sheet transfers are. Its because Tim's card is actually an impression cylinder transfer and not a wet sheet transfer.

[Abravefan11]

Thanks Ron I couldn't have explained it that well.

[steve B]

Originally Posted by Ronnie73

I'm not sure of the exact printing method that was used back then. Maybe it was offset printing where a plate image transfers to a blanket cylinder and then onto the paper. If the paper is not fed, the blanket image will transfer to the impression cylinder. If that happens, a reversed image would print on the back side of the paper the same time the image is printed on the front. Normally the impression cylinder would be cleaned if a misfeed happened before feeding another sheet in to avoid the error reverse printing. This is most likely the reason for how detailed some wet sheet transfers are. Its because Tim's card is actually an impression cylinder transfer and not a wet sheet transfer.

That's a great explanation. A WST that's just as solid can happen, but it's very unusual. It takes a new employee leaning on the just printed stack or something like that to make a really solid WST. I'm quite certain of it, but I'd just as soon leave out the details of how I'm sure

Steve B

[Ease]

Originally Posted by Ronnie73

I'm not sure of the exact printing method that was used back then. Maybe it was offset printing where a plate image transfers to a blanket cylinder and then onto the paper. If the paper is not fed, the blanket image will transfer to the impression cylinder. If that happens, a reversed image would print on the back side of the paper the same time the image is printed on the front. Normally the impression cylinder would be cleaned if a misfeed happened before feeding another sheet in to avoid the error reverse printing. This is most likely the reason for how detailed some wet sheet transfers are. Its because Tim's card is actually an impression cylinder transfer and not a wet sheet transfer.

That post is pure gold. Its the first time I (sort of) understand what's going on with these transfers.

[Ronnie73]

I should have mentioned that the printing process I described contains three cylinders. The first is the plate with the design that gets inked. The design is normal. It gets transferend to the blanket cylinder that gets the image reversed. As the paper runs between the blanket and impression cylinders, the design is in the correct way on the paper. If the paper does not go in, the blanket cylinder prints the correct way image on the impression cylinder. Now when the paper passes inbetween, both sides get inked and the back gets a reverse image because its the right direction if looking at the impression cylinder. I hope I didn't make it even more difficult to understand.

[Abravefan11]

That's a great explanation Ron. I think what you describe as an "impression cylinder transfer" would explain these.

[ullmandds]

Tim...are those on blank back t206's?

[Ronnie73]

Originally Posted by Abravefan11

That's a great explanation Ron. I think what you describe as an "impression cylinder transfer" would explain these.

Hi Tim, Those are exactly what i'm talking about. Usually after the error reverse is printed, it removes nearly all ink from the impression cylinder so the next sheet that passes doesn't show the error. When setting up the press, it would be adjusted so exactly enough ink was transfered to the sheet per pass. Thats why we hardly never see over inked cards.

Those are incredible looking cards. I'm not too much of an error collector but would probably go after a Hal Chase Blue if I had the chance.