Ink eraser
Encyclopedia
An ink eraser is an instrument used to remove ink
from a writing surface. There are two types: a traditional metal ink eraser, in which the ink is literally scraped off the surface, and the chemically imbibed ink eradicator, in which a vinyl eraser
is imbibed with a substance that chemically reacts with the ink to hide it.
Metal ink erasers were generally used before chemically imbibed ink erasers were introduced and when most writing was done in ink and not in pencil
(or by computer). However, the erasers were essentially small knives, and by accident or purposely could end up as unlikely weapons in a stabbing. In one instance in 1909, a 15-year-old boy working in an insurance office in New York City
died when, while evading women stenographers trying to give him a kiss on his birthday, he fell and his ink eraser, supplied to office employees, stabbed his chest. In another instance, stemming from a bar fight in 1885, a man stabbed another with an ink eraser.
. It can break down royal blue ink
without residue. It is also known as Super Pirat and Super Sheriff.
Ink Eradicator disrupts the geometry of the dye
molecules in ink so that light is no longer filtered. The molecules are disrupted by sulfite
or hydroxide
ion
s binding to the central carbon
atoms of the dye. The ink is not destroyed by the erasing process, but is made invisible. It can be transformed back into a visible work with aldehyde
s.
It is to be noted that the eradicator works only with royal blue ink. It discolors black ink to a rust brown and changes the hue of non standard blues, limiting its usefulness.
Ink
Ink is a liquid or paste that contains pigments and/or dyes and is used to color a surface to produce an image, text, or design. Ink is used for drawing and/or writing with a pen, brush, or quill...
from a writing surface. There are two types: a traditional metal ink eraser, in which the ink is literally scraped off the surface, and the chemically imbibed ink eradicator, in which a vinyl eraser
Eraser
An eraser or rubber is an article of stationery that is used for rubbing out pencil markings. Erasers have a rubbery consistency and are often white or pink, although modern materials allow them to be made in any color. Many pencils are equipped with an eraser on one end...
is imbibed with a substance that chemically reacts with the ink to hide it.
Metal ink erasers were generally used before chemically imbibed ink erasers were introduced and when most writing was done in ink and not in pencil
Pencil
A pencil is a writing implement or art medium usually constructed of a narrow, solid pigment core inside a protective casing. The case prevents the core from breaking, and also from marking the user’s hand during use....
(or by computer). However, the erasers were essentially small knives, and by accident or purposely could end up as unlikely weapons in a stabbing. In one instance in 1909, a 15-year-old boy working in an insurance office in New York City
New York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...
died when, while evading women stenographers trying to give him a kiss on his birthday, he fell and his ink eraser, supplied to office employees, stabbed his chest. In another instance, stemming from a bar fight in 1885, a man stabbed another with an ink eraser.
Ink eradicator
The Ink Eradicator is a brand of chemical ink eraser pen produced by German manufacturer PelikanPelikan
Pelikan is a German manufacturer of fountain pens and other writing, office and art equipment, credited with the invention of the differential-piston filling method....
. It can break down royal blue ink
Ink
Ink is a liquid or paste that contains pigments and/or dyes and is used to color a surface to produce an image, text, or design. Ink is used for drawing and/or writing with a pen, brush, or quill...
without residue. It is also known as Super Pirat and Super Sheriff.
Ink Eradicator disrupts the geometry of the dye
Dye
A dye is a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and requires a mordant to improve the fastness of the dye on the fiber....
molecules in ink so that light is no longer filtered. The molecules are disrupted by sulfite
Sulfite
Sulfites are compounds that contain the sulfite ion SO. The sulfite ion is the conjugate base of bisulfite. Although the acid itself is elusive, its salts are widely used.-Structure:...
or hydroxide
Hydroxide
Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and a hydrogen atom held together by a covalent bond, and carrying a negative electric charge. It is an important but usually minor constituent of water. It functions as a base, as a ligand, a nucleophile, and a...
ion
Ion
An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass between electrodes in a...
s binding to the central carbon
Carbon
Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds...
atoms of the dye. The ink is not destroyed by the erasing process, but is made invisible. It can be transformed back into a visible work with aldehyde
Aldehyde
An aldehyde is an organic compound containing a formyl group. This functional group, with the structure R-CHO, consists of a carbonyl center bonded to hydrogen and an R group....
s.
It is to be noted that the eradicator works only with royal blue ink. It discolors black ink to a rust brown and changes the hue of non standard blues, limiting its usefulness.
Famous brands
Following companies have ink erasers:-- PelikanPelikanPelikan is a German manufacturer of fountain pens and other writing, office and art equipment, credited with the invention of the differential-piston filling method....
(Super Sheriff and Super Pirat) - Reynolds(Magic +)