#275 - HAVE A WONDERFUL WEEKEND!

[Moon]

QUESTION:

 

What process does American Bank Note paper undergo in order to prevent the inks used during the printing process from running through the paper?

 

 

Good Luck!

 

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[BankNote1]

coat the paper with fine clay.

[dan8402]

Intaglio Printing?

[MunkyMan95]

Some kind of waterproof sealant on the paper?

[jtryka]

I thought they had to wet it somehow.

[bsshog40]

The backs are printed with green ink first and are allowed to dry for 24-48 hours before the fronts are printed with black ink. This allows for what does bleed thru, will not be noticed.

[just-john]

Intaglio printing

 

Intaglio is a printing technique in which the image is incised into a surface. Normally, copper or zinc plates are used, and the incisions are created by etching or engraving the image, but one may also use mezzotint. In printing, the surface is covered in ink, and then rubbed vigorously with tarlatan cloth or newspaper to remove the ink from the surface, leaving it in the incisions. A damp piece of paper is placed on top, and the plate and paper are run through a printing press that, through pressure, transfers the ink to the paper.

 

The very sharp printing obtained from the intaglio process is hard to imitate by other means. Intaglio also allows for the creation of latent images which are only visible when the document is viewed at a very shallow angle.

[rrantique]

The BEP uses the heatset intaglio printing ink formulations that require a maximum dryer temperature of 119° C. to produce currency .

[Admiral Mike-migration]

American Banknote uses Melamine Paper, wherein the paperstock is treated with Melamine-Formaldhyde (MF). this process adds resistence to folding, smudging and add a level of waterproofing and strength.

[xJack]

Melamine - also makes the paper more durable and water resistant.

[Moon]

QUESTION:

 

What process does American Bank Note paper undergo in order to prevent the inks used during the printing process from running through the paper?

 

ANSWER:

 

The process is called sizing.

 

Unfortunately there are no winners.

 

Thanks for playing this weeks Numisma-Quest. Dont forget to stop by for this weeks NGC question