Black toner

Eady fusing systems, such as that used in the Xerox 914, employed radiant heat produced by incandescent lamps. Black toner is an extremely good... 

Full color printing is essentially the same as for black and white but requires four steps, one each for the yellow, magenta, cyan, and black toners needed for full color reproduction.35,36 Consequently, color laser printers and color copiers are significantly more expensive than both monochrome laser printers and especially ink jet printers. Obviously, they are also slower than monochrome laser printers. 

Charge control agents (CCAs) can be either colored or colorless and are mainly metal complex dyes rather than pigments. Colored CCAs are more effective than colorless CCAs but, because of their color, are restricted to black toners. Colorless CCAs are needed for yellow, magenta, and cyan toners. 

When a paper display is needed or when textual information is to be printed, as in a report, it is common to use a digital printer such as a laser jet or inkjet printer. These devices are inexpensive and provide 600 to 2400 dots per inch, more than adequate for most applications. The laser jet devices use an electrostatic transfer of black toner material to paper to form the desired image, which is then fused to the paper by passage over a heater. Color versions are available but are more expensive because they require three toner cartridges, one for each of the primary colors. The inkjet printers use movable solid-state heads with many fine holes through which small droplets of ink are ejected by selective localized heating behind the orifices. The ink is drawn by capillary action from a reservoir chamber and, by use of three primary colors, full-color images can be printed at up to 2400 dots per inch. 

In another development, in order to enhance the heat conversion and alleviate the synchronization challenge, black toner from a common office laser printer marked the potential vias interspersed on the polymeric substrate. These seals were subsequently irradiated by a solid-state laser, with similar specifications to those... 

This article will cover only the analysis of the toner itself, in particular the analysis of the black toner. The examination of manufactured identifying characteristics, such as grip marks, roller marks, and acquired identifying characteristics, such as trash... 

A similar type of application was developed by Szynkowska et al., who investigated the potential of LA-ICP-TOF-MS for the analysis of different toners from different brands, with the aim of tracing illegal activities that make use of photocopy machines and printers [97]. Their conclusion was that black toners can be differentiated based on multi-elemental information. However, for prints containing cyan toner, Cu isotopic analysis is recommended, because cyan toner is typically produced using an organic pigment (Phthalocyanine Blue BN), which is a complex of Cu and phthalocyanine. 

Black toner is described by Toch (1916) in the following terms For making a very intense and good quality black... carefully selected bones or burnt ivory chips are taken, and digested in hydrochloric acid, which removes all the lime salts and leaves the carbon as a flocculent residue. This carbon is probably the highest priced and most intense black used by paint makers, and is frequently sold under the name of black toner, because it sometimes is used for giving an intense tone to an otherwise pure black. See bone black. 

Carbon-based blacks group Antler Antlerite Bitumen Bone Coal Indigo Hydroxylapatite Yeast Animal black Atramentum Black toner Boija black Drop black, Franlfort black German black Ivory black Paris black, Wine lees black... 

Rosenkranz, H. S., and D. R. Sanders. 1980. Nitropyrenes isolation, identification, and reduction of mutagenic impurities in carbon black toners. Science 209 1039-1043. 

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