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(PDF) Optical Brightening Agents in Photographic Paper
- https://www.researchgate.net/publication/272313948_Optical_Brightening_Agents_in_Photographic_Paper
- Abstract. A reference collection of mostly 20th-century photographic paper was surveyed for the presence of optical brightening agents. Only fiber-based, gelatin silver paper was assessed. In …
Optical Brighteners in Inkjet Paper - Photo Review
- https://www.photoreview.com.au/tips/outputting/optical-brighteners-in-inkjet-paper/
- Optical brighteners – also known as ‘optical brightening agents’ (OBAs) or UV brighteners are white or colourless compounds that are added to the printing surfaces of many inkjet papers. Their purpose is to make the papers appear whiter and brighter than they actually are. They achieve this by absorbing ultraviolet (UV) radiation from the ...
Optical Brightening Agents in Photographic Paper
- https://www.jstor.org/stable/40024485
- OPTICAL BRIGHTENING AGENTS IN PHOTOGRAPHIC PAPER Paul Messier, Valerie Baas, Diane Tafilowski, and Lauren Varga ABSTRACT - A reference collection of mostly 20th-century photographic paper was surveyed for the presence of optical brightening agents. Only fiber-based, gelatin silver paper was assessed. In all, 1,804 samples were examined, dating ...
Optical Brighteners in Black-and-White Photographic …
- https://www.jstor.org/stable/40024995
- optical brightener contributes to the appearance of a photographic paper, only papers with visibly per-ceptible brightener under long-wavelength UV il-lumination on the recto of the paper were chosen. Also, trends in optical brightener usage were explored based on manufacturer, brand, and date, and therefore
ColorWiki - Optical Brighteners in Paper
- http://www.colorwiki.com/wiki/Optical_Brighteners_in_Paper
- Optical brighteners are additives that paper manufacturers put into paper in order to help a paper look "whiter." They are also called optical brightening agents (OBA), or sometimes "artificial whiteners." ... Paper without OBA (or very little) include "silver halide" RA-4 process photographic paper, certain press proofing papers, fine art ...
Optical Brighteners In Inkjet Paper - Good or Bad
- https://www.redrivercatalog.com/infocenter/optical-brighteners-in-your-inkjet-paper-2.html
- The chemicals, called Optical Brightening Agents (OBAs), convert ultraviolet light and re-emit it in the visible blue spectrum. They "fluoresce" at a point that is just barely within our ability to see. This additional light causes paper to appear brighter white. Without OBAs, most paper would have a warm, almost creme color.
Optical Brightening Agents in Photographic Paper
- https://www.tandfonline.com/doi/abs/10.1179/019713605806082392
- A reference collection of mostly 20th-century photographic paper was surveyed for the presence of optical brightening agents. Only fiber-based, gelatin silver paper was assessed. In all, 1,804 samples were examined, dating from 1896 to …
Optical Brighteners In Inkjet Paper by Patrick Herold
- https://www.redrivercatalog.com/infocenter/optical-brighteners-in-your-inkjet-paper.html
- Optical brighteners are additives that paper manufacturer's put into paper in order to help a paper look "whiter." They are also called optical brightening agents (OBA), or sometimes "artificial whiteners." In order to make paper appear brighter, it is common for most paper manufacturers to add certain chemicals to the paper which can take ...
Optical brightener - Wikipedia
- https://en.wikipedia.org/wiki/Optical_brightener
- Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) by fluorescence.These additives are often used to enhance …
Are there damaging optical brightener in your fine art paper ? (lets ...
- https://print.xzib.com/inkjet-fine-art-prints/optical-brightener-in-fine-art-paper/
- Optical brighteners are added to make cheap paper look, less cheap. Many companies are not using 100% real cotton rag fine art paper. Instead, they are using "acid free art paper." This is a mix of brown wood substrates, which they bleach with OBA, to make it white. It looks great to start, but it quickly fades. Because OBA are not really bleach.
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