Why does color printing use different primary pigment colors than color tv of the human eye?....?

Question

In other words, why not use red, green , and blue inks for color printing.


I thought the answer was tv's start with black and add colors while newprint starts with white and substracts colors. Am I right? Please help.

Answer 1

"I thought the answer was tv's start with black and add colors while newprint starts with white and substracts colors. Am I right?"

Yes. That is exactly right.

By "adding colors" or "subtracting colors" you mean adding and subtracting wavelengths of light.

A monitor or TV is a light-*emitting* object ... so it fools the eye into seeing many colors by directly controlling the wavelengths of light that it is emitting. So it constructs light by adding just the right amounts of red, green, and blue to fool the eye into thinking it is seeing all sorts of different colors. For example, whenever you see yellow on a computer monitor, there is actually not a single speck of yellow on the screen. The screen is just sending red and green wavelengths (no blue) to the eye, which to the eye is equivalent to the stimulus "yellow".

Paper, however, is not a light-emitting object but a light-*reflecting* object. So it has to simulate colors by *subtracting* wavelengths from that light. Contrary to popular belief, inks are not reflective ... they are translucent ... they filter out wavelengths as they pass through the ink to the paper, and then again as the light reflects out of the paper toward the eye. So to get "blue" you have to subtract out yellow wavelengths.

Answer 2

Got it just right. Now, to be a super-star, look into the ways that colors are described. Find RGB, HSR, and hexadecimal. That way you can avoid terms like "sorta puce" and get exact. For fun, get a piece of freeware called "getthecolor". When you run it, it will read back the exact color of the pixel at the end of your cursor. Scan across any graph on the screen that seems to be all the same color and see what you get. It is revealing.

Answer 3

using fact the old music is going, 'black is black' and as you is often attentive to there are differing colours of black. I don;t be attentive to if all of us see colorations precisely a similar yet I think of this is plenty extra probably that we don't. to boot, such as you assert, we purely say 'green' is green using fact we've been conditioned to think of so. you purely ought to place your have confidence in the persons who coach you i think. i'm not sure if black and white are certainly counted as colorations besides. question 2 (cheeky!) I doubt albinos gets a tan using fact they have not got any melanin of their epidermis that's what makes your epidermis tan , and thanks to this they are albinos.