Resin for toners

Acrylic-styrene type resins that are used for pulverized-type toners.
We have a rich product lineup of those with excellent offset properties and those conforming to the Environmental Regulations in Europe.

Resins for printer toner: Product introduction

Product FSR-051 FSR-053 FSR-055 FSR-061 FSR-068 FSR-044
Features Standard type Functional group denaturation type Low-Tg type Superior in hot-offset resistance Superior in fixing property and cold-offset resistance For low-molecular-weight type subresin
Resin composition Acrylic-styrene Acrylic-styrene Acrylic-styrene Acrylic-styrene Acrylic-styrene Acrylic-styrene
Physical properties of the resin (representative value)
Nonvolatile content % 0.3 0.2 0.2 0.4 0.3 0.3
Residual styrene content ppm 150 150 50 70 80 50
TgII 63 59 54 61 56 60
Toluene-insoluble fraction % 25 0 32 43 10 0
Acid value *1) mgKOH/g 0.2 9.9 0.3 0.2 0.3 0.4
Melt viscosity T1/2  *1) , 2) 142 132 136 145 130 112
Molecular weight  *1)
Mp ×1,000 22 23 36 22 17 10
Mn ×1,000 7 9 7 8 6 5
Mw ×1,000 370 320 445 410 290 15

*1) Acid value, melt viscosity, molecular weight are the measurement values of the resin kneaded product. Kneading conditions: LABO PLASTOMILL 130℃-70 rpm, 10 minutes
*2) Melt viscosity conditions: SHIMADZU flowtester, plunger cross-sectional area: 1cm2 Die: 1.0×1.0 mm Load: 20 kgf Preheating temperature: 80℃ Temperature elevation rate: 6℃/min


Printer-toner resin-type charge control agent (CCA, named FCA for Fujikura products)

The FCA series is the polymer charge control agents (CCR) developed by our company with our unique technology. They bring out excellent performance not only in charging characteristics but also in safety and transparency, different from the conventional CCR. They can be effectively used in electrophotographic materials, e.g., toner, carrier, and friction charging members as well as electrostatic painting. They have been widely used by many customers since being placed in the market in 1986.

  • FCA-N :Polymer charge control agent for negative charge
  • FCA-P :Polymer charge control agent for positive charge


Dispersibility (compatibility) They feature excellent compatibility and dispersibility (homogeneity) with binder resin because non-polar components and polar components bind together. They can be used for wide intended uses not only for the normal grinding system but also for polymerized toner (suspension method, latex method, and dispersion polymerization method), carrier coating materials, powder painting, and others.
Transparency They form highly transparent films with many binder resins, e.g., acrylic-styrene, polyester, epoxy, hybrid type, and others in a wide mixing range (from 0.05 to 20%).
Charging stability The charge amount can be controlled by the additive amount resulting in stabilized characteristics.
Safety They are superior in safety because they do not include heavy metals, and they are polymers with high molecular weight.
Environmental adaptability They are stable and have high environmental adaptability because they are not soluble in water, and have high molecular weight.
Register of Potentially Toxic Chemicals Chemical Substances Control Law, TSCA, and others

Functional particles

Organic fine particles can be obtained by our unique polymerization technique. A wide range of grades are assorted for the respective types of fine particles (acrylic, styrene, acrylic-styrene, crosslink, and porous microparticles). Adjustments of particle size (from 0.1 to hundreds of microns), degree of crosslink (solvent resistance), polarity, refractive index, composition, and others are available according to your order. They can be widely applicable to matting agents, light diffusing agents, anti-blocking agents, paint additives, and others.

Functional particles picture1
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We are able to respond to special order designs for various purposes with our technology that has been developed based on our accumulated know-how and performance.
Feel free to contact us or to consult with us.

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