Patent ID: 11906919
Assignee: KONICA MINOLTA, INC.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 11:
12. A recording medium determination device comprising:
three or more light emitting elements that emit inspection light respectively having specific wavelengths to a recording medium;
a hardware processor that causes the three or more light emitting elements to sequentially emit the inspection light; and
a light receiving element that receives light having been emitted from the three or more light emitting elements,
wherein the hardware processor
determines a type of the recording medium from a relative relationship between an amount of received light concerning a light emitting element used as a reference among the three or more light emitting elements and an amount of received light concerning each of the light emitting elements other than the light emitting element used as the reference, and
causes the light emitting element used as the reference to emit the inspection light in a turn other than first and last turns in a sequence of causing the three or more light emitting elements to emit the inspection light, wherein the light emitting element used as the reference has an intensity of a peak wavelength more than or equal to 750 nm and less than or equal to 1100 nm.