PMS 485 bump up

[cnygmc15]

Sorry for the title, but can someone tell me what screen angle to use when we propose to print PMS 485 under an image of car taillights and such. I remember doing this 15 + yrs. ago but I was a pressman then, now I'm a manager LOL ! (wasn't involved with that stuff...)
Thanks in advance for replies........

 

[dabob]

For myself I just convert the image for the 485 or other touch plates a hi rez dithered bitmap . . . presto - no angles

 

[cnygmc15]

Awesome, thanks !

 

[gordo]

For myself I just convert the image for the 485 or other touch plates a hi rez dithered bitmap . . . presto - no angles

I think that would be a mistake. Better to use the angle of the missing color probably cyan.

 

[dabob]

It works for me every time especially when there is no "Missing Color" probably have gone this was at least a dozen times in the last 10 years but your placement of the image had better be spot on . . .

 

[gordo]

It works for me every time especially when there is no "Missing Color" probably have gone this was at least a dozen times in the last 10 years but your placement of the image had better be spot on . . .

I'm assuming you're using PShop's diffusion dither to create the high rez bitmap?

If so, then the reasons that I said that I thought it a mistake (but maybe you've resolved them?) are:

1 - A high rez dither e.g. created in PShop will have significant dot gain on press unless you do some sort of pre-compensation in PShop
2 - PShop only does a first order dither which can be very grainy in screen tint builds unless the area is broken up by lots of detail.

 

[dabob]

Yes I am . . . and I do play with the gray scale image and save several versions to see which one looks the best . . . In the cases I needed it it worked and to touch plate a tail light . . . probably wouldn't be too bad