Where I'm from, most paper you find/get at stores has this yellowish tinge. Why is it yellow and not white?
In my chemistry book it's mentioned that paper manufacturers "refine" paper from wood pulp, and that this involves treating the pulp with $\ce{CaCO3, TiO3}$, etc and this is what makes paper white.
But the paper that's commonly available here is yellow(ish). Is it because the manufacturers don't carry out the required treatment with $\ce{CaCO3}$ and $\ce{TiO3}$ (why would they do that anyway?), or could it be due to some other reason?
Also, if treatment with $\ce{CaCO3}$ and $\ce{TiO3}$ is what's used to color paper white, can someone tell me how the color change to white (from what would've otherwise been yellow paper), actually works?
My question is different from the proposed duplicate. In my question, I'd like to know why (relatively fresh) paper is yellow, straight out of the press. I'm not asking for why paper yellows over time.