Questioned Documents Flashcards
What is the process of using infrared and ultraviolet light to analyze inks for consistency or changes in response to light exposure, particularly on commonly forged documents such as passports?
Video spectral comparison
What is the analysis technique used for inks in which a solvent separates the ink components as they they migrate up a plate?
Thin layer chromatography
A form of fraudulent writing is
disguised writing
Using this technique, an indented writing sample can be visualized and photographed
oblique lighting
If a forger attempts pays less attention to speed of the signature than to the letter forms what characteristic will suffer?
line quality
What is the name for marks left on photocopies caused from foreign material on or inside the operating parts of a copy machine?
trash marks
What type of forgery is where an individual does not attempt to copy the victim’s signature or writing?
normal hand forgeries
Key elements to observe and document for a vehicular accident include all but ?
Time of Day
Which of the following is an example of irreversible work during an automobile accident?
skidding
The two most important laws used in vehicular accident analysis
Conservation of Energy
Conservation of Momentum
Dynamic loads
loads on a building that change during a relatively short period of time
Dead loads
loads that never seem to change in a building
Live loads
loads on a building that change slowly while it’s in used
Static Load
the basic weight of the building itself and its contents
Receipt signatures
hastily written and have a lot of variation
_______ tends to be more fluid than __________
distorted handwriting, disguised handwriting
Disguise is most often found in ______
dictated handwriting
Generally in good line quality, _________
curves run smoothly, there are straight lines, and there is no retouching or patching
Video spectral comparator
allows for the nondestructive examination of documents and inks under various infrared, ultraviolet, and other lighting conditions
Which of the following QDE tasks is the most subjective?
Is the document written by the claimed author?
All of the following are typically used to identify the printer/creator of a document except
microprinting
Which form of machine markings would generally be easiest to individualize to a particular machine?
An electric impact typewriter
Trash marks
Unintentional marks on printed papers as the result of dust or debris
When the dandy roll presses a pattern into wet pulp, a ____________ is formed
watermark
An ESDA film lift could show which of the following pieces of information?
It could show that a suspect document came from a particular pad or notebook
It could be used for handwriting identification
Why it thin layer chromatography generally a poor choice for analysis of pigment based inks and toners?
The pigments do not dissolve easily into solvents
Indented Writing
writing from the surface underneath the surface in direct contact with the writing apparatus
Toner
Carbon powder and polymer beads
