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Removing a sliver of paint for analysis by a mass spectrometer may reveal information about trade routes, but it also damages the book. Likewise, inspecting the drawings and inscriptions in the margins provides a unique historical window, but a careless historian might touch the page and damage fragile and flaking paint.
Older ink erasers are therefore small knives designed to scrape off the top few microns of a sheet of paper, removing the ink that had penetrated. In concert with bladed ink erasers, an eraser similar to those at the end of pencils was also used, with additional abrasives, such as sand, mixed into the rubber.
A permanent marker can also be removed by drawing over it with a dry erase marker on non-porous surfaces such as a whiteboard, [3] as dry erase markers also contain a non-polar solvent. Most dry-erase board cleaner solutions also contain effective organic solvents like 2-butoxyethanol to remove the pigment.
When it comes to small ink stains, you can apply the rubbing alcohol to a clean cloth or paper towel and start soaking the stain. After a few minutes rinse and blot.
Oxalic acid is used widely as an acid rinse in the laundry industry due to its ability to remove rust and ink stains. Oxalic acid converts insoluble iron compounds into a soluble complex ion. It is because of this property that oxalic acid is one of the primary components in commercial solutions used to remove scale from automobile radiators. [5]
Pink erasers Using an eraser. An eraser (also known as a rubber in some Commonwealth countries, including South Africa [1] [2] [3] from which the material first used got its name) is an article of stationery that is used for removing marks from paper or skin (e.g. parchment or vellum).
One type of whiteboard pen (also called a whiteboard marker or dry erase marker) was invented by Jerry Woolf of Techform Laboratories and later patented by Pilot Pen in 1975. [9] It is a non-permanent marker and uses an erasable ink that adheres to the writing surface without binding to or being absorbed by it.
From left to right: a blue ink TW200, a black ink TW400, and a black ink TW200. The original Erasermate pen was a refillable ballpoint pen fitted with a replaceable eraser . A disposable version called Erasermate 2 was subsequently introduced, with an appearance similar to the non-erasable Write Bros. stick pen, except for a slightly larger ...