Ads
related to: large acid free photo sleeves for prints on glass panels
Search results
Results from the WOW.Com Content Network
The photographic glass plates are stored vertically on the long side of the plate in storage boxes whose material is free of acid, lignin, polyvinyl chloride (PVC), dye, sulfur, and alum. The acidity of any paper storage used should show a pH between 7 and 8.5. [26] Glass plates should not be packed tightly and should not rub against each other.
These products (nitric acid, nitric oxide and nitrogen dioxide) are destructive to other film-based negatives, and especially to photographic prints. Other artifacts, metals for instance, will be harmed by proximity to deteriorated nitrate material. Such gasses can cause skin, eye, and respiratory irritations.
The conservation and restoration of photographs is the study of the physical care and treatment of photographic materials. It covers both efforts undertaken by photograph conservators, librarians, archivists, and museum curators who manage photograph collections at a variety of cultural heritage institutions, as well as steps taken to preserve collections of personal and family photographs.
Further, if the print is framed, archival or conservation grade picture mats are essential since acids within older or inexpensive matting will attack a print even if the print was produced using acid-free paper. Color prints can be susceptible to fading depending on the type of inks used.
Being printed on glass, orotone images are extremely fragile and often require specialized frames in order to prevent breakage. Other types of prints can be made with the same negative used to make an orotone. Consequently, silver gelatin prints and platinotypes (platinum and palladium prints) are also made by those who produce orotone prints ...
The plate's ground side is then dipped into acid, or the acid poured onto it. The acid bites into the surface of the plate where it was exposed. Biting is a printmaking term to describe the acid's etching, or incising, of the image; its duration depends on the acid strength, metal's reactivity, temperature, air pressure and the depth desired. [8]
Ads
related to: large acid free photo sleeves for prints on glass panels