Iron blue toner

There are three ways to achieve cold tones. The first is through direct development of bromide paper. The second is through the gold-toning of a warm-tone chlorobromide paper. The third method is immersion in a blue-toning bath (Formulas Toners, Ansco 241 Iron Blue Toner). 

Those that replace the silver with another metal. The compounds produced are usually either ferricyanide (Formulas Toners Copper Toner, Dassonville T-5 Copper Toner) or iron (Formulas Blue Toners Ansco 241 Iron Blue Toner). These are also known as replacement toners. 

Inorganic Color Pigments. Iron blue is made in several shades, such as Mdori blue and Pmssian blue. It is economical, but has poor alkaH resistance. It is also used as a toner in some black inks. 

There are two reasons to tone prints One is to change the color of the image, the other is for longevity. While the two are not mutually exclusive—some formulas both change the color and protect the image—they are not always complementary. For example, prints treated with iron toners, while attaining a rich blue color, often will not last more than a few years. 

LDPE Heat stability normally up to 240°C Moderate light stability for many applications Easy dispersion important Red and yellow toners Selected Bis-aryiamides Isoindolinone Azo condensation Phthalocyanine Green Phthalocyanine Blue Cadmium pigments Iron oxides Lead pigments Ultramarine Blue Vat pigments Special monoazos... 

---