HP Toner - that's the principle of laser printing

In a typical laser printer, a negative charge is applied to the aluminum cylindrical image drum to allow for exposure. Upon exposure, a laser beam strikes the surface of the image drum to apply an electrically discharged invisible image. Once the negatively charged toner powder is transferred to the discharged areas exposed by the laser beam, an image of toner particles is formed on the image drum.

Thereafter, the toner powder is transferred from the surface of the image drum to the paper via a transfer roller. This creates a positive electrical charge on the back of the paper which draws the toner powder from the drum onto the paper. The toner powder is electrostatically held while the paper is pulled through the developer unit within the printing device, where the toner is permanently fixed by heat and pressure. Due to its high efficiency, the electrophotography has prevailed permanently from the first copiers to the modern color laser printers and multifunctional systems.

Over the past twenty years, there has been a steady evolution in laser printing technology, often led by HP. The possibilities of laser printing were greatly expanded, the speed of the printing times considerably accelerated, the print quality of black-and-white and color printing was constantly improved, the color spaces were expanded, the precision increased and with it the image resolution of the printouts.

Achilles heels of laser technology

However, laser technology has also shown limitations that limit its possibilities. On the one hand, the quality of the toner powder diminishes after some time. Common toner powder has a structure in the toner particles that can collapse over an extended period of time. The toner particles circulate within the toner cartridge and collide. As a result, their outer shell can be worn and burst.

Toner particles that are fed into the printing process with the sheath open can no longer deliver their original performance and show reduced print quality and page performance. The deterioration of toner particle aging is well known by the manufacturers of printing equipment and printer accessories. They counteract the problem by filling the toner cartridge with more toner powder to ensure the specified page performance and print quality.

This added toner powder is not printed, but ends up as an excess in the waste toner box because its purpose is solely for counteracting wear of the age-deficient toner powder. The second Achilles heel of laser technology is the heat. During printing, the toner powder is pressed onto the paper under the influence of heat and strong pressure. If, at high speeds in printing, lots of paper passes through the mechanism inside the printer, the temperature required for the print increases even higher.

The heat during the printing process in laser printing not only means a loss of time from the print job to the application of the first page, but also costs a lot of energy during the printing process.

The reinvention of toner through HP technology in HP Toner

For more than five years, Hewlett Packard has been working to address the weaknesses in toner technology and has developed a formulation that effectively addresses both issues and sets new standards in toner quality with its ColorSphere 3 HP toner. The individual particles of the toner powder in the new HP toner consist of a soft core of wax and polymer in its center, which are stuck in a protective and durable outer shell.

The outer shell of the spherical particles of the HP toner, which circulate and collide in the toner cartridge housing, is stable and intact, while effectively protecting the components inside the particles from damage. Due to the properties of the wax and the polymer in the core of the toner particles, the melting point of the stable Packard toner is lowered, whereby the temperature inside the printer is also lowered constantly.

Thanks to its advanced and unique technology, the HP toner is not subject to wear and tear due to aging and its low melting point saves energy and protects the printing device. The effects of the new technology in Packard toner are far reaching and show unprecedented improvements in laser printing technology in the components:

• Print quality
• page performance
• speed
• Printer size
• Reliability

HP Toner Print Quality - High Quality Printed Materials

Thanks to the polymerization of the HP toner, the individual toner particles are not only extremely small, but also the same size and evenly spherical. These features enhance the quality of the print job by outputting the colors at higher intensities and in a wide range of hues. The toner dots are accurately placed on the photo paper with high precision and printed in improved uniformity and balance in the coverage of the toner application.

The resolution of the ink application is located in higher areas, since the toner dots are not only accurately placed, but also placed in improved density on the paper. The result is a color print with numerous shades that are applied true to color in soft transitions and strong contrasts. The precision is noticeable not only in the execution of small image details, but especially in text printing, which is issued in excellent readability.

Higher page yield - economy with HP Toner

The durable HP toner with its high durability uses all the toner powder in its housing for printouts, eliminating the need to use excess toner powder for wear protection. This gives the Packard toner up to 33 percent higher page performance, which is output in high quality. The high page yield benefits the price-performance ratio, as it is provided without the additional use of toner powder and thus achieves a much lower price per page.

No time loss - quick start with HP Toner

Due to the minimized melting point and the lowered temperature, the heating drum inside the printer heats up in a shorter period of time. The print job is therefore translated into the first page in a much shorter time. Printer testing has shown that when you use HP toner, the first page's printout runs up to 40 percent faster after a job to print, which has a very positive impact on energy consumption.

HP Toner - Small Printer, Great Performance

By lowering the temperature not only energy is saved, but also significantly reduced the space required for the fuser and the cooling. The space savings are reflected in the blueprint for the pressure equipment, which is therefore much smaller. HP printing devices can be made smaller and more compact with HP toner technology to better integrate into the work environment.

Reliability - HP Toner

The reliability of HP printers and printing supplies is confirmed and continued in their excellent print quality in both single and double-sided printing, in small and large runs, in both black-and-white and color printing through the progressive development of the Packard toner.