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Electronics

From charge rolls, which Sumitomo Riko was the first to develop and productize, through to cleaning blades and developer rollers, wherever you look in the vital parts of devices such as printers and copiers you will find Sumitomo Riko parts performing vital functions that influence the quality of the picture. We provide solutions to the advanced needs of modern society as IT becomes more important through our innovative formulation design technology, compounding technology to bring together different materials, and our precision processing technology. A long with this, other important issues are the innovative technologies to build societies beneficial to both people and the earth with the burgeoning population putting pressures on resources and energy and causing conflicts, while concern over the global environment grows. At Sumitomo Riko we have been able to produce water-developable flexographic printing plates, a revolutionary concept that contributes to a reduced burden on the environment because organic solvents are not used in the production of the plates. We have been able to enter the environmental solutions field, including plate production systems, and we will continue to move into other business fields with our technologies.

Electronics

Components for office automation equipment

Office equipment such as printers and copiers are indispensable in the modern world. Sumitomo Riko has developed a great variety of functional parts, beginning with the charging rollers, by making the most of its innovative formulation design technology, compounding technology to bring together different materials, and precision processing technology, contributing to the improvements in performance in office equipment.

Charging Rollers

Peripheral Parts for Photoconductors

Charging Rollers

Our rubber rolls uniformly charge the surface of photoconductor drums. They are highly functional components with a decisive influence on image quality. We were the first in the world to develop and commercialize the charging rollers.

Cleaning Blades

Peripheral Parts for Photoconductors

Cleaning Blades

Cleaning blades remove toner that remains on photoconductor drums. Molding and adhesion of different materials-metal and urethane-are performed simultaneously. This micron-level, high-precision processing technology is our proprietary technology.

Developer Rollers

Peripheral Parts for Photoconductors

Developer Rollers

Molding and adhesion of different materials-metal and urethane-are performed simultaneously. This enables advanced electrical property control, dimensional accuracy, and high durability.

quality of printers and copying machines

Peripheral Parts for Photoconductors

Sponge Rollers

Sponge rollers uniformly supply and remove toner. Our processing technology realizes surface design for dimensional accuracy and high durability, thereby contributing to product differentiation.

quality of printers and copying machines

Peripheral Parts for Photoconductors

Intermediate Transfer Belts

These belts perform the essential function of generating full color images by superposing four-color toners. These seamless belts achieve uniform electrical properties over the entire surface and high durability.

quality of printers and copying machines

Peripheral Parts for Photoconductors

Paper Feeder Rollers

These rollers precisely feed sheets of paper one sheet at a time. The combination of our proprietary urethane formulation technology and surface design molding prevents adhesion of paper dust to sheets of paper, thus helping ensure stable paper feeding.

Water-developable flexographic printing plates

Water-developable flexographic printing plates "AquaGreen"

Water-developable flexographic printing plates "AquaGreen"

Flexographic printing is a method of printing using flexible rubber plates. AquaGreen from Sumitomo Riko is a water-developable flexo printing plate (where other companies use solvents), meaning it is kind to the environment and to those working with it. This is a printing plate that has top environmental credentials with no effluent, and also provides high precision and great productivity.

Micro-fluid Chips

quality of printers and copying machines

Micro-fluid Chips

Used in bacteria testing and for diagnoses of antigen-antibody reactions. Production of these were made possible by injection molding of liquid silicone rubber. Disposal of this type is much easier than the glass ones that were being used, so they also contribute to a better environment.

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