What are OBAs and their effects ?

“OBA” is an abbreviation for “optical brightening agent.” These chemical compounds are often added to the coating of papers, such as RC papers, or in some cases, to the base paper itself. Their purpose is to increase the paper’s whiteness.

Achieving precise print results with papers with higher OBA content can be more challenging.

Papers with high OBA content may turn yellow over time, discolouring the base paper.

Updated on March 25, 2023

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