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Look what showed up on my desk

get the pages framed and put them in the hallway.
I thought that exposure to light caused blueprints to fade, found this article tonight where someone suggested displaying a color copy, they also mention fading due to exposure to light:


A client has a framed blueprint in one of his buildings, looks great as a piece of artwork.
 
Blueprints - - white lines on a blue background - - are oxide based printing, and the process is halted when the chemicals are rinsed off in the printing process. In my experience they are no more and no less sensitive to fading than any other commonly printed material. If you are going to display them where you’ve already seen other old photos or prints fade over time, you can expect a similar speed of degradation. I would not place them in a wall that receives direct sunlight.

Bluelines, the blue-ish purple lines on white paper, use a different process known as Diazo. They are much more sensitive to ultraviolet light and will continue to fade more quickly over time as compared to other conventionally printed materials. By the time diazo replaced blueprinting, the standard paper stock was also thinner to save on costs, and it also was more sensitive to degradation in sunlight and would yellow easily.

To see how bluelines can still be made, check out this recent video, which provoked discussion on another thread for different reasons:
 
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