Stable and High Image Quality Ensured by the Excellent Voltage Dependency of Ionic Conduction
The operating speed and image quality of copy machines and printers are improving continuously. Such performance improvements require high-quality, high-performance transfer rollers. Yamauchi uses an ionic-conductive rubber material created with an original blending technology and supplies high-performance transfer rollers that answer the rigorous needs of high-end users.
What Makes Our Transfer Rollers Special?
Made of an Ionic-Conductive Rubber Developed Using Yamauchi’s Original Blending Technology
Yamauchi transfer roller is made from an original formulation technology developed rubber. The ionic-conductive material does not only help in maintaining sufficient nip width and improve transfer accuracy, but it also implements excellent voltage dependence in which the resistance value does not fluctuate even when the applied voltage changes. In addition, the dependence on environmental temperature and humidity is kept small, so stable high image quality can be achieved in any environment.
Small Resistance Rise in Long-Term Use and Minimum Contamination of Photoconductors and Other Parts
To achieve high durability, it is necessary to minimize changes in electrical characteristics (resistance) over long-term use, in addition to maintaining the physical properties of the material. We conducts durability tests by applying bias voltage, in order to verify performance. Since the transfer roller is in contact with the photoconductor and intermediate transfer components when it is not transporting paper, we select the material that does not contaminate those parts. With a coating that prevents toner adhesion, our transfer roller offers clean performance.
Two Types of Material Available for Various Conditions and Applications
Yamauchi offers two types of material to suit specific operating conditions and applications for transfer rollers.
Sponges
Our sponges are characterized by their small, uniform foam cells. They are widely used in the transfer rollers of black-and-white copy machines and printers as well as the primary and secondary transfer rollers of color copy machines and printers.
Solid + Coating
The coating layer provides a smooth, flat surface and a low friction coefficient. This material combination is used mainly in secondary transfer rollers.
Transfer Rollers Lineup
Materials with Optimal Hardness, Resistance, etc., Meet Specific Product Requirements
*For certain roller shapes, we can respond to needs for characteristics outside the above ranges. Contact Yamauchi for details.
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