particle characterization of toners
DESCRIPTION
TRANSCRIPT
Technique ComparisonLaser
DiffractionCoulter Principle Nanoparticle
AnalysisPore Analysis
Size Range 17 nm– 2 mm 400 nm – 1.7 mm 0.6 nm – 7 um 3 nm -200 nm (pore diameter)
Resolution Medium Very High Low Medium
Sample Volume
Medium Small Small Small
Primary Applicatio
n
Broad Distributions
Concentration and Size
Size and Zeta Potential
Pore Size Distribution
Our Solution
LSTM Series MultisizerTM
SeriesDelsaNanoTM SA3100TM
Coulter Principle• Each particle is measured individually• Results are not affected by particle color, shape,
composition or refractive index.• Based on electrical impedance• Only technology to allow COUNT and SIZE
Coulter PrincipleAperture Size
(μm) Range 20 0.4 – 1230 0.6 – 1850 1.0 – 3070 1.4 – 42
100 2.0 – 60140 2.8 – 64200 4.0 – 120280 5.6 – 128400 8.0 – 240560 11.2 – 336 1000 20 – 6002000 40 - 1200
Dynamic Range: 1:30 in diameter,
1:27,000 in volume
Applications: Ink Toners
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Toner size affects how well inks bind to paper, how fast they dry, printer handling requirements, etc. The Coulter Principle is the #1 technique for monitoring ink toners.
• Particle size determines ink characteristics
• Reference methods:– ASTM F751-83– ASTM F577-83
• Major Global Application
Size distribution is critical for the manufacturing process
Applications: Ink Toners
Toners have a tendency to agglomerate. The Size Distribution graph does not make possible to detect
when agglomeration takes place during sample analysis.
Applications: Toner Industry
The Pulse Distribution graph makes possible to detect when agglomeration takes place during sample analysis.
Controlling the Quality of Toners
Applications: Toner Industry
• Test Method F751-83 (1997) Standard Test Method for Measuring Particle Size of Wide-Size Range Dry Toners.
• Test Method F577-83 (1997) Standard Test Method for Particle Size Measurement of Dry Toners
ASTM Test Methods