Use of Optical Brighteners In Paper Mills:
Optical brightening agents are generally used in paper industries. The purpose behind this is to enhance the whitening effects on paper. These are additives added to the paper to make them look whiter than their natural selves. It is common for most manufacturers to add optical brighteners for paper or optical brightening agents as they are known. These are helpful in adding certain chemicals to the paper for it to take the invisible, ultraviolet light. This also causes the paper to emit a blue spectrum seen as blue-ish white to the human eye. Also, this is one of the reasons why printer profiles made with a lot of optical brighteners end up printing images with a yellow tint to them. These optical brightening agents are also the reason why over the years, the paper has lost its glow. So, with time, let us say a time period of several months or even years, the apparent brightness of the paper decreases drastically, giving it a dull look. Some people choose to print natural papers, and others choose to print using Optical Brightening Agents.