TPR Fellows are experts whose curriculum vitae demonstrate a professional history as a senior technologist, professor, or technical manager within a major organization and whose services are available through TPR. TPR fellows work with project teams on development programs requiring in-depth specialized knowledge.

Henry Alioth has more than 40-years experience in electrical engineering, mechanical design, and software development. His area of specialization is magnetic technologies focusing on the design, specification and sourcing of high quality magnets for the reprographics industry. With extensive international, cultural, and business experience Mr. Alioth speaks five languages fluently and holds numerous patents.

David Abbott enjoyed 28 years at Xerox, Europe. He has extensive experience in electrophotographic materials development, and process subsystem development. He has specific expertise in the leadership of materials design, process sub system design teams and the integration into new product delivery process from the technology demonstration phase through to manufacturing, launch and service support. Mr. Abbott is a Chartered Chemist.

Ken Altfather has a 32-year history of progressive engineering and project management responsibility. He holds a masters degree in optics from the University of Rochester and has 9 patents in the fields of optics, mechanics, and thermal inkjet. He led the subsystem design teams for the optical scanning systems in a range of Xerox copiers and was directly responsible for Xerox’s first precision scanning optical system. He managed the technology integration, design, and development of inkjet components for a wide range of desktop inkjet printers.

Leonard Carreira has 40 years experience in research, engineering and manufacturing of consumables for non-impact printing systems. His expertise is in the development and characterization of imaging materials to achieve function and print quality requirements of complex imaging systems such as ink jet. He has extensive knowledge of continuous ink jet, piezo drop-on-demand, thermal IJ and MEMS piston drop ejectors. While at Xerox he developed and taught an intensive course in Ink Jet Technology for in-house training of R&D personnel. Mr. Carreira holds 40 US Patents on imaging methods and materials including the primary patent on color photo-electrophoresis imaging. He has presented several papers on ink jet technology at international non-impact printing conferences sponsored by IS&T. His area of special interest is the interaction of ink and media and its influence on print quality.

Robert Couture has 30-years of experience in the mechanical design and integration of imaging related products. He has been involved at all levels of responsibility with the design of high volume photographic systems, as well as low- and mid- volume electro-photographic devices utilizing both digital and conventional imaging. His areas of expertise include film and paper handling, optical imaging and viewing systems.

Werner Fassler,  has a Diploma in Engineering from the Federal Polytechnic University in Z�rich. During a long and successful career in engineering design he has garnered more than 40 US patents including those related to the Kodak Disk camera, 35 mm film loading, special shutter mechanisms and miniature camcorders. He later spent ten years at Eastman Kodak developing a very successful line of thermal dye sublimation printers and also worked on a series of inkjet print heads and other related mechanisms including fluid ink handling technology and ink re-circulating systems for piezo inkjet print heads.

Ralph Faull is recognized as a mentor and educator of robust engineering and quality engineering for the electro-photographic industry. His 35 years of industrial experience includes extensive systems engineering, project management with proficiency in electro-photographic subsystems including corona chargers, developer modules, cleaners, fusers, and faster input/output devices. Mr. Faull is a certified Taguchi Master and holder of 11 patents in electro-photography

(back to top)

Dr. Dan Hays joined Xerox Corporation in 1968 following a postdoctoral position at the University of Pittsburgh. . His research and technology contributions in electrophotography have spanned the areas of contact electrification, charged particle adhesion, and xerographic development system design. These research efforts have influenced development system designs in a number of Xerox printer products including DocuTech and iGen3. Dr. Hays received the Xerox President’s Award twice and the IS&T Chester Carlson Award. He was appointed to Fellowship in IS&T in 1996 and received the American Institute of Physics 1997-98 Prize for Industrial Applications of Physics. In 1999, he became a Fellow of the American Physical Society and received the Gutenberg Prize from the Society for Information Display. In support of IS&T Annual Conferences, he presented State-of-the-Art seminars on Color Electrostatic Marking. Dan has published 57 scientific papers and holds 67 U.S. Patents. His scientific contributions have been recognized worldwide at international conferences on electrostatics, adhesion and non-impact printing. Dr. Hays retired from Xerox in 2006 as a Senior Research Fellow and subsequently joined TPR.

David H Hudson has over 40 years of intensive and diverse mechanical design/engineering experience. He is a recognized and published authority with over 30 years of work devoted to Finite Element Modeling and Analysis. Mr. Hudson's experience includes engineering positions at several major corporations practicing FEA and consulting on numerical simulations and behavior of structures and systems. He has deep experience with NASTRAN, FEMAP, and other industry-standard tools. Linear and Non-Linear Statics, Dynamics, and Vibration (normal modes and random/frequency response) problems are his modeling and analytical specialties. He has spoken at several International Finite Element Conferences and has published articles in many magazines. He holds 5 patents. Mr. Hudson holds a BS in Mechanical Engineering, and earned a MS in Engineering Management from Kennedy-Western University.

C. Wayne Jaeger, Ph.D., completed postdoctoral work at Georgia Tech University with Professor H. O. House, then joined Crompton & Knowles Corporation for seven years as a dye research chemist synthesizing dyes for the sublimation printing of textiles and other substrates. He also did work in fluorescent whitening agents and in the preparation of dyestuff dispersions. In 1980, he moved to Tektronix in their then-fledgling development of color ink-jet printing. He developed the phase change inks (also known as solid ink) formulations and color set used in the successful line of Tektronix Phaser Color Solid Ink Jet Printers. Dr. Jaeger was honored with the Tektronix founder's Excellence in Engineering Award in 1995. Xerox purchased the Tektronix Color Printing Division January 2000, and he retired from Xerox in 2006 as a Xerox Research Fellow. He was appointed to Fellowship in IS&T in 1996 and received the Johann Gutenberg Prize from the Society for Information Display in 1998. Dr. Jaeger has presented colorant tutorials from 1998 to 2003, as well as publishing numerous scientific papers. He holds 27 U.S. Patents.

Steve Kittelberger, PhD., enjoyed a 28-year career at Xerox Corporation, where he participated in and managed all phases of toner/developer design and implementation. He is an expert in formulation design, component design, toner/developer process design, scaleup and manufacturing, especially in the area of process control. Dr. Kittelberger is also familiar with the toner-paper interface and the problems of laser wastepaper de-inking and recycling. He holds 17 US patents in these areas, and is a member of ACS, APS and TAPPI.

Joel Kubby had an 18 year career in research and management with Xerox Corporation where he applied Micro-Electro-Mechanical Systems (MEMS) technology for direct-marking printing applications. He is currently a tenured faculty member in the Department of Electrical Engineering at the University California Santa Cruz where he is applying direct-marking technology for printing of MEMS devices. He is an expert in MEMS design, modeling, fabrication and testing and has over 70 patents in the area of MEMS technology. He is also a registered patent agent with the United States Patent and Trademark Office (USPTO).
Ingo Leubner, Ph.D., is a recognized leader in photographic and imaging science. His contributions reach from fundamental science to leader of successful product development teams. He is presently teaching tutorials on the technological comparison of film and electronic imaging ('Silver or Chips for Baby's Picture?'). In his career as a photographic scientist, he also developed new breakthrough models for the precision control of crystallization. He has published works on dye synthesis and photochemistry and has numerous other publications, patents and awards.

Donald Lehmbeck, has extremely broad experience in all aspects of measuring, controlling, analyzing, and optimizing imaging quality, especially in digital xerographic printing; reprographic, and scanning or digital capture systems. He was both Manager of Imaging Sciences Engineering and Technology (ISE&T) and an Engineering Fellow at Xerox. He has several patents and publications including three book chapters on detailed aspects of imaging quality. Specialties include automatic tone reproduction, half-tones, banding reduction, MTF enhancement, principles for micro-densitometry and scanning, customer research, electrophotography and information storing capacity of images. Don has a BS in Photographic Science from RIT, an MS in Optics from The University of Rochester, and is currently an Adjunct Faculty in modern sensitometry and image quality at RIT.

Rick Lux, Ph.D.,has 29 years experience in research and development of digital printing systems. At Xerox Corporation he was Vice President leading its marking and imaging competency center. Rick’s expertise is in color marking systems, and he is an expert at design and optimization for run cost, image quality, and reliability. He has extensive experience integrating electrophotographic materials such as toners, photoreceptors, and fuser materials. His systems engineering expertise allows him to successfully drive products to market and solve the most difficult technical challenges. He is trained in Design for Lean Six Sigma. Rick was awarded his doctorate in Mechanical and Aerospace Sciences from The University of Rochester. He has 5 patents. He is a member of the IS&T and has published 5 papers since 2004.

(back to top)

Trevor Martin, PhD., has almost 25 years experience in the formulation, design and development of electrophotographic dry toners, developers and photoconductors. Dr. Martin has formulated toners for both extrusion/mechanical and direct polymerization processes as well as encapsulated toners. He has written and presented a number of papers and given seminars in additive chemistry and holds 21 patents in inks, photoconductors, toners, and additive formulations.

Jerome May, is a 33 year digital imaging veteran. As a physicist at Xerox, his career spanned research, system engineering, intellectual property management, product development and engineering, and manufacturing environments. He has contributed to commercializing a variety of novel color and monochrome marking technologies. He has collaborated with product development teams in the Far East and Europe. Jerry trained at the University of Chicago prior to joining Xerox. Mr. May was one of the first scientists trained in Six Sigma Black Belt methodologies, and was most recently Manager of System Reliability and Methodologies. He holds 10 US and international patents. He is past president of the Rochester Chapter of IS&T, The Society for Imaging Science and Technology, and is a charter member of International Society of Six Sigma Professionals.

Robert Mehalso, Ph.D., has 25 years experience in research, engineering, manufacturing and marketing. His emphasis is on materials and fabrication, process development, and is internationally recognized for his micro engineering and micro manufacturing implementations. In the course of his professional activities, he has managed or consulted on design, assembly, manufacturing systems and facility construction for inkjet print heads. Dr. Mehalso has been a member of the technical staff at several research centers and has received a number of process patents.

William Mey, Ph.D., has more than 26 years experience in electrophotography, electrography, laser thermal, and ink jet printing. This included a focus in the photophysics of photoreceptors, design and testing of corona chargers, and subsystem interactions in printer systems. In addition, he has hands-on experience with the fabrication and magnetization of multipole high-energy permanent magnets for magnetic development rollers. Dr. Mey holds 48 patents and was appointed a Distinguished Inventor by Kodak Research Scientific Council in 1992.

James Owens, Ph.D., has 30 years broad-based experience in hardware and media for electronic and photographic imaging systems with special emphasis on laser scanning and color hard-copy output systems performance. He is an expert in the fields of solid state and chemical physics as well as silver halide, electrographic, thermal, and inkjet systems, holding a number of patents in these fields. Dr. Owens is a past President and current Fellow of the Society for Imaging Science and Technology and is a member of APS, IEEE, OSA and SPIE. 

D. G. (Gene) Parker enjoyed a 32-year career at Xerox Corporation where he was engaged in research on all phases of the xerographic process. He was deeply involved in development system design and novel marking systems including magnetography. Prior to joining Xerox he was engaged in radio propagation and geomagnetic noise characterization research for General Dynamics Corporation. He is the author or co-author of eighteen technical papers or publications and holds 44 U.S. Patents related to electro-photography Mr. Parker is a member of the Imaging Science and Technology Society, and a senior member of the IEEE. 

Raymond Poehlein is a master mechanical engineer with 20 years experience in the development and design of electro-photographic systems. His areas of special concentration have been image fusing, particularly roll fusing, as well as all phases of paper handling and general mechanical design. He has developed analyses and hardware demonstrations, concerning paper handling with elastomer rolls and belts, that have been presented to hundreds of engineering personnel. Engineers have been surprised by the simplicity of elastomer roll analysis and the ways in which elastomer roll system design can greatly affect function. Mr. Poehlein has been issued more than 10 patents.

Stephen Pond, Ph.D., has worked for over 27 years in research and development specializing in inkjet printing technology and print head engineering and manufacturing. He has served as a research laboratory manager and as chief engineer for inkjet programs at Xerox. His expertise in the field of digital printers includes all forms of inkjet, thermal printing, magnetography, and laser xerography. Dr. Pond holds 43 US patents and has served as an editor and is the key contributor to the book titled, Inkjet Technology and Product Development Strategies, published by Torrey Pines Research.

(back to top)

Domenic Santilli, has a background in dispersion technology and colloidal interactions. With 25 years of experience in these areas at Eastman Kodak Company, his expertise includes liquid toner technology and the formulation and manufacture of color inks for both thermal and piezo inkjet applications. Mr. Santilli's articles are widely read among the industry and he holds 27 patents mostly on dispersions for electrostatic and inkjet applications. 

John Schneider, Ph.D., has held senior management and engineering positions at a number of major companies in the inkjet printing industry. His expertise includes continuous inkjet, piezo and thermal drop-on-demand systems for inkjet applications. He has extensive experience in concept invention/engineering and development testing, as well as the manufacture of inkjet print heads and products. Dr. Schneider has been issued eight patents in numerous technological areas and is frequently invited to speak at seminars. He has also has published numerous articles in various scientific journals.

Don Seanor, Ph.D., has held a number of scientific and management positions focused on elastomer development and materials engineering for the digital printer industry. He has received over 20 patents on electro-photographic materials and devices. He has published more than 30 papers and edited two books on photoconducting and electrical properties of polymers. Dr. Seanor's extensive experience includes silicon fuser roll development, Viton� fuser roll development and manufacturing process development, novel photocopier & intermediate transfer belt seaming processes, rubber fuser roll manufacturing; novel photoreceptor and intermediate transfer belt seaming processes, charging and transfer devices, high volume roll fuser systems and the design and development of electrostatic brush cleaners.

David Shogren has over 35 years experience in the design and development of electro-photographic printing systems. He has extensive experience in the design of optical systems and mechanical drive systems. He has specific expertise in the analysis of vibration, acoustic noise reduction, gear stress, gear transmission errors and drive system efficiency for printer/copier applications. Mr. Shogren is a licensed professional engineer and holds 21 patents relating to optical systems and mechanical drive systems.

Milan Stolka, PhD, had a 27 year career with Xerox Corporation. He is an expert in the design and development of organic electronic materials, such as photoconductors, charge transport materials, light emitting diodes (OLEDs). He and his group designed the materials components for the organic photoreceptor, which Xerox is currently
using in almost all printers and duplicators. For his accomplishments, he received, among others, the Xerox President's Award in 1984, the "Hero of Chemistry 2000" award by ACS. He is an author and co-author of over 100 publications and 40 patents. Currently, he consults in the field of OLEDs

(back to top)