TREK, INC. (est. 1968) has had a close association with - and commitment to - the electrophotography industry.This relationship was established via Trek's innovative designs for electrostatic voltmeters and corona charging power supplies. These products play an essential role in electrostatic image-forming processes. This electrophotographic technology is utilized in laser printers, copiers, fax machines and many other printing devices. Electrostatic voltmeters are used in electrophotography R&D, quality control, manufacturing, field testing, and frequently provide feedback for process adjustment. Trek also supplies products for precise toner charge-to-mass ratio measurements and continues to develop solutions to address the needs of this industry.

一、Precise Measurement of Electrostatic Voltage

        Trek is an expert in electrostatic measurement technologies and instrumentation, with specific expertise in the precise measurement of electrostatic charge on dielectric surfaces and powders, by way of the company's leadership role in electrophotographic applications. Trek's noncontacting electrostatic voltmeters are prevalent in this industry for making dark decay, light decay, and charge uniformity measurements on photoconductors, drums and belts. Additionally, Trek provides a system for precisely measuring the net charge on toner particles.

二、Charge-to-Mass Ratio Measurements (Q/m)

        Trek's Charge-to-Mass Ratio System is a unique, small and portable Q/m analyzer which provides repeatable high accuracy toner charge measurements. It utilizes the “draw-off” toner transfer method to determine the charge-to-mass ratio characteristics, and is capable of measuring single or dual component developers. This unit can be used directly on the production line as well as in the laboratory. It employs unique technology to avoid measurement errors that can occur with other systems.

三、Corona Charging Supplies 

        Trek provides high-voltage amplifiers for corona charging, with the ability to precisely control the corona voltage or current. The company has also developed charge roller supplies which are specifically AE power designed to simultaneously provide the AC and DC operating potentials required to operate/control an electrostatic charge roller.

四、Innovative Contacting Voltmeter

        Trek’s Infinitron Model 820 is an ultra-high impedance voltmeter instrument which enables contacting voltage measurements to be made with virtually no transfer of electric charge to/from the measured object, unlike other products in the market that transfer charge upon contact. It addresses the need for site-specific measurement, as critical surface phenomena become more important with the mini a turi z a tion of devi c e s and technologies.

五、On-Board Controller

        The Trek 870 OBC is a low cost option to accomplish highly accurate voltage measurements without physical contact with the surface of the drum. With no moving parts, the Model 870 on-board electrostatic sensor is the ideal solid state probe. The small sensor disk replaces a bulky probe housing and can be placed in tight locations.