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Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the 5th and 19th centuries, remained in widespread use well into the 20th ...
Other consequences of aqueous treatment are a change of ink texture or formation of plaque on the surface of the ink (Reibland & de Groot 1999). Iron gall inks require storage in a stable environment, because fluctuating relative humidity increases the rate that formic acid, acetic acid, and furan derivatives form in the material the ink was ...
Iron gall ink was used in fountain pens when they were invented but has the disadvantage of causing corrosion to metal parts. Modern formulations of iron gall ink are somewhat less corrosive and are still occasionally used in applications that require permanence. Bottle of green ink. Red inks usually contain the dye eosin. Blue inks often ...
Alloys of gold can be subject to corrosion, with can cause darkening of the metal, reaction with the adhesives and other paint, and staining of the paper. This is an inherent vice of illuminations done with pure silver as well. Regardless of the care and treatment, silver corrodes and darkens over time.
It can use waterproof, pigmented, iron gall ink, particle-and-binder-based inks, such as India ink, drawing ink, and acrylic inks with ease; while fountain pens generally must use water based inks, require thorough and frequent cleaning to prevent clogging when used with pigmented or waterproof inks and may corrode when used with iron gall ink ...
The treatment report will indicate what type of structural treatment should be used. If the item is missing hardware it can be replaced by adding matching or similar screws and rivets. Adhesives, soldering, and welding can be used to repair a damaged structure. Protective coatings. Protective coatings can be good options for iron and steel objects.