How to choose a high-quality charging roller? CET comes to support

The charging roller (PCR) is an important part in the imaging device of printers and copiers. Its function is to charge the photosensitive drum (OPC) so that the surface of the OPC can be charged with a uniform positive or negative charge. It forms an electrostatic latent image through exposure, and is developed and transferred. , Fusing, and cleaning to form high-resolution images on paper. The uniformity and stability of the charged surface of OPC directly affect the quality of printed products. Therefore, high-quality copying puts forward almost strict requirements for charging roller materials, production processes and semiconductors of polymer materials. However, due to factors such as raw material supply barriers and high production process difficulties, most of the compatible charging rollers on the market have uneven quality levels, and defective charging rollers will bring greater harm to the printing equipment:

· The uneven structure of the inferior charging roller will lead to different resistivity of each part, resulting in uneven image density, black and white spots, bottom gray and other phenomena.

· The unreasonable conductive material and formula will lead to the precipitation of the conductive material of the charging roller, which will contaminate or damage the OPC, resulting in poor printing.

· It is impossible to print a qualified image if the resistance value is too high or too low, and related problems such as bottom ash and pinhole discharge effect will occur.

Bad charging rollers not only affect the quality of printed products, but also easily cause damage to other imaging components, resulting in extra labor and maintenance costs. So, how to choose a high-quality charging roller?

1 Constant value of resistance

A good charging roller has appropriate hardness, surface roughness and reasonable volume resistivity, which can make the charging roller and OPC make full contact with even pressure, and the resistance distribution is uniform. At the same time, it has the characteristics of material stability, so that the resistance value will change with the change of temperature and humidity in the environment to achieve the required resistance value.

The charging roller independently produced by CET adopts high-quality PCR special raw materials imported from Japan, and is equipped with automatic rubber mixing equipment, imported wide-width automatic grinding machine, CNC numerical control machine tool and other professional automatic production equipment and 100,000-level dust-free spraying workshop. While unmanned operation, it ensures the stability of the material and the consistency of the shape, size and roughness of the product surface, so as to ensure that the product can have a very stable resistance value within the life range to ensure the best printing. Effect.


CET charging roller production workshop

2 No pollution and no damage to OPC

A good charging roller should have excellent chemical properties to avoid the precipitation of conductive substances and other filling substances, which will affect the conductivity and physical properties of the charging roller.

The key raw materials of the CET charging roller are imported from Japan, and high-precision polymer material reaction equipment has been purchased to increase the polymer material from the conventional 50 nanometers to 5 nanometers, so that the product has a high nano-level coating. At the same time, the use of a new conductive structure formula design makes charging and discharging more stable, avoiding breakdown and contamination of OPC.


3 Excellent compatibility and cost performance

Compatible consumables usually have better cost performance. Excellent compatible charging rollers can be used not only with OEM accessories, but also with other compatible products. CET charging rollers are tested for compatibility and printing effects on mainstream models before they go on sale. , high and low temperature environment and other strict tests to ensure that the product has excellent compatibility.

To sum up, an excellent compatible charging roller must have the characteristics of uniform charging, constant resistance value, no noise, high temperature and high humidity, no pollution to the drum core, and certain wear resistance. Image effect and long service life, and ultimately achieve the purpose of saving the cost of single printing.