Demetris E Paraskevopoulos

Title: Demetris E Paraskevopoulos: Innovator in Toner Technology

Introduction

Demetris E Paraskevopoulos is a notable inventor based in Pittsford, NY (US). He has made significant contributions to the field of imaging technology, particularly in the development of devices that enhance the efficiency of toner usage in printing systems. With a total of 2 patents to his name, his work reflects a commitment to innovation and improvement in printing technologies.

Latest Patents

One of his latest patents is the "Toner concentration sensor." This invention is an apparatus designed to monitor toner concentration on a photoreceptor surface. The apparatus includes a light-emitting diode, a phototransistor, a beam splitter, and a lens positioned between the beam splitter and the photoreceptor surface to collimate the light beam. A portion of the light emitted from the LED is transmitted through the beam splitter and the lens to the photoreceptor surface. The collimated light is then reflected from the photoreceptor surface back through the lens and reflected from the beam splitter to the phototransistor. The output signal from the phototransistor, resulting from the incident and reflected collimated light, is independent of the distance of the lens from the photoreceptor surface. Additionally, a second lens can be placed between the beam splitter and the phototransistor to enhance overall resolution.

Another significant invention is the "Multifunction graphic engine based on an oscillating scanner." This simple graphic engine features a document reading array and an array of marking elements supported on the same member. The support member is scanned in a direction orthogonal to the relative movement between the support member and the document to be read or the record-receiving member. The support member is also oscillated axially during scanning to reduce the number of elements required in both the scanning and marking elements.

Career Highlights

Demetris E Paraskevopoulos is currently employed at Xerox Corporation, a leading company in the field of printing and imaging solutions. His work at Xerox has allowed him to focus on developing innovative technologies that improve the efficiency and effectiveness of printing processes.

Collaborations

Throughout his career, Demetris has collaborated with notable colleagues, including Kenneth H Fischbeck and Allen T Wright. These collaborations have contributed to the advancement of technology in the printing industry.

Conclusion

Demetris E