Which layer of the PSP plate directs emitted light toward the reader?

• A. Reflective
• B. Phosphor
• C. Conductor
• D. Support

Answer: (A)

The emitted light is directed toward the reader by a reflective layer. When the phosphor in the plate is stimulated, it emits light in multiple directions; the reflective layer positioned beneath the phosphor reflects much of that light back upward toward the reader’s detector, boosting the signal. The phosphor layer is the active material that stores the image energy, the conductor layer helps dissipate static charges, and the support provides mechanical backing. So the reflective layer is responsible for guiding the emitted light to the reader.