Application of rubber roller in office equipment

Office machinery and equipment are developing extremely rapidly, and these office machinery have a direct relationship to improving the efficiency of business processing. In such machinery, such as copiers, typewriters, information processing machines, desktop computers, cash register machines, etc., many types of rubber rollers are used. In Japan, the amount of rubber rollers used in office machinery is second only to printing rubber rollers, ranking second. The development and consumption of its technology has attracted people's attention.

Copier rollers of copiers are used in the largest amount of rubber rollers for office machinery. Each copier needs to be equipped with at least 5 rubber rollers, and it is also technically representative. The operating temperature of the fixing roller is 170-200 ° C. It is required that the rubber rollers not only have durability High temperature and no toner sticking during operation. The material used to prepare the fuser and pressure rollers of a copier is related to the speed at which the machine is running.

The rubber roller used in a large number of high-speed copiers can be made of room temperature vulcanized silicone rubber. In the case of increased speed, the silicone rubber can be cured at high temperature. For copiers with high running speed, the fixing roller is made of polytetrafluoroethylene, and the surface of the roller is microporous, but because of its adhesion to the coating, it is necessary to apply a silicone oil release agent, and the pressure roller can be on the surface of the silicone rubber roller It is coated with a layer of polytetrafluoroethylene. In mimeograph machines, copiers and electronic computers, paper is usually fed by rubber rollers. This kind of roller is generally a low-hardness rubber roller with a degree of 25-40 Shore A, so that the paper can be in close contact with the roller.

Since the rubber roller is easy to accumulate static electricity during use, the phenomenon that the paper rolls on the roller will occur. In order to solve such a problem, in the rubber compound of the rubber roller outer layer prepared from natural rubber or synthetic rubber, the textured chrome plating is added with metal powder or conductive carbon black, so that the rubber layer has antistatic properties, and is made of antistatic rubber. The outer surface of the rubber roller is attached with a layer of antistatic foam rubber with a thickness of 100 pm or less. This layer of foam rubber is best prepared with silicone rubber. Due to the action of the foamed rubber layer, the contact force between the paper and the roller is dispersed, and the outer surface is elastic, which completely prevents the paper rolling phenomenon.

Equipment such as typewriters and cash registers are equipped with ink rollers that supply ink to the surface of movable type. This kind of roller has connected air holes on the roller body, and the holes contain ink. When in use, the roller is in contact with the surface of the movable type from time to time, so that the equipment can operate normally. The manufacturing method of this ink roller is to add a foaming agent to the rubber compound, and then vulcanize it in the mold, or mix the salt and the rubber compound, and then extract the salt after vulcanization and molding in the mold. . It can also be separated in two ways.