2019 April Educational Seminar

Presenter: Dr. James Kelley

Date: April 24, 2019

Time:  4:00 p.m. PDT, 7:00 p.m. EDT, 00:00 BST 30-April, 11:00 a.m. NZST

Topic: Microscope Photo Evidence –  A Practical Approach


The lecture covers the following topics:

(1) Determining how a Form was printed.

(2) Identifying microscopic features in a signature.

(3) Measuring color in the background of a page.

(4) Measuring the color of  signatures and graphics.

(5) comparing the features of signatures and initials on different pages

ASTM Standard Guides

(6) Basic characteristics of inkjet and laser printers/ features

(there are many other printing processes but this is a good start)

(8) Digital Microscope resolution (Optical and Camera)

Nyquist sampling theorem applied to optics and camera sensor arrayy.

Field of View Vs. Magnification

(10) White Paper at 200 X

(11) Microscope Photo of  Laser Printed letter “g”.

(12) Microscope Calibration Procedure.

(13) Microscope Photos of PaperMate Inkjoy Gel blue pen at 70 and 202 X

(14) Microscope Photos of a red Sharpie fine point at 202 X

(15) Microscope Photos of a commercial blue pen at 70 and 202 X


Dr. James Kelley obtained his M.S.E.E and PhD from the University of California, Santa Barbara. He has an undergraduate major in mathematics and a minor in Chemistry and worked in a nuclear reactor core design group at General Electric as an undergraduate. He has experience in military and commercial computer systems development and applications. He designed, developed, manufactured and sold more than one hundred computer software, hardware and products sold to engineers and programmers worldwide, managed phased array software development for the prototype of the B-1 bomber, prototyped and tested an innovative digital receiver for the F-16, managed, designed an electronic countermeasures processor, image processing and numerous other product areas. He has managed groups of engineers in his own company and at Raytheon, Scientific Microsystems and Sun Microsystems. He has current patents in switches and database technology.


Since 2012 he has been applying his computer and graphics skills to the analysis of computer-generated documents using scanner, microscopes, sophisticated computer programs and printers. A lot of work needs to be done in this area. He is a licensed pilot with tail-dragger certification.