Skip to content
Skip over generic navigation
Skip over primary navigation
Skip over visual
Skip over functional column
Driving the technological advancement is a trend toward producing smaller particle sized toner.
Due to the greater difficulties in maintaining good flow and controlling charge, larger particle sized AEROSIL® fumed silica grades such as RY 50, RX 50, NY 50 or NAX 50 are used in combination with smaller size AEROSIL® grades such as R 972, R 812, R 805, RY 200, RY 200 S, RY 200 L, R 202, RX 200, RY 300 for negative-charged toners (particle size : 6~8 µm on average).
The two major benefits of using AEROSIL® fumed silica in this application are:
Following these two guidelines, developing toners for clear and high-resolution copies is made easier in any environment using even the smallest particle size toners.
For positive charged toners, positive-charged AEROSIL® fumed silica is used for free flow improvement and electrostatic charge stability in a variety of environments. AEROSIL® fumed silica grades such as R 504, RA 200 HS and NA 50 H are widely used in positive charged toner formulations.
For full color toner, the combined use of hydrophobic AEROSIL® fumed silicas such as NAX 50, R 972 or RX 50 and hydrophobic fumed Titanium oxides such as AEROXIDE® TiO2 NKT 90 or AEROXIDE® TiO2 T 805 or the combined use of hydrophobic AEROSIL® fumed silicas such as RX 50, RY 50 and R 972 is recommended to stabilize the electrostatic charge of 4 color toners (black, cyan, yellow, magenta).
Technical Information 1222: AEROSIL® fumed silica and AEROXIDE® fumed metal oxides for toners
Product- as well as safety data sheets (SDS) of our various AEROSIL® fumed silica grades, can be found at our product recommendationsmore