Sheet distinguishing device and image forming device
AssigneeKonica Minolta, Inc.
InventorAkira YAMAMURA
Life of this patent
Estimating the term…
Abstract
A sheet distinguishing device that determines sheet type and includes a light emitter, a light receiver, a calculator 53, and a determiner 52. The light emitter irradiates a sheet with light at discrete wavelengths. The light receiver receives light from the sheet. The calculator 53 obtains an intensity of light for each of the discrete wavelengths from the light received, and calculates a characteristic value with respect to a wavelength distribution of light intensity, based on the intensities obtained. The determiner 52 determines whether the sheet is a first type or a second type by using the characteristic value.
Claims14
A sheet distinguishing device that determines sheet type, the sheet distinguishing device comprising:
- a light emitter that irradiates a sheet with light at discrete wavelengths;
- a light receiver that receives light from the sheet;
- a calculator that obtains an intensity of light for each of the discrete wavelengths from the light received, and calculates a characteristic value with respect to a wavelength distribution of light intensity, based on the intensities obtained;
- and
- a determiner that determines whether the sheet is a first type or a second type by using the characteristic value.
An image forming device that adjusts an image forming condition according to sheet type, the image forming device comprising:
- a sheet distinguishing device that determines the sheet type, the sheet distinguishing device comprising:
- a light emitter that irradiates a sheet with light at discrete wavelengths;
- a light receiver that receives light from the sheet;
- a calculator that obtains an intensity of light for each of the discrete wavelengths from the light received, and calculates a characteristic value with respect to a wavelength distribution of light intensity, based on the intensities obtained;
- and
- a determiner that determines whether the sheet is a first type or a second type by using the characteristic value.
A sheet distinguishing method that determines sheet type of a sheet in a sheet distinguishing device comprising a light emitter that emits light at discrete wavelengths and a light receiver that receives light from the sheet, the sheet distinguishing method comprising:
- obtaining an intensity of light for each of the discrete wavelengths from the light received and calculating characteristic value with respect to a wavelength distribution of light intensity, based on the intensities obtained;
- and
- determining whether the sheet is a first type or a second type by using the characteristic value.
A non-transitory computer-readable storage medium storing a computer program for executing a control that determines sheet type of a sheet used in a sheet distinguishing device comprising a light emitter that emits light at discrete wavelengths and a light receiver that receives light from the sheet, the computer program comprising:
- causing the sheet distinguishing device, which is a computer, to:
- obtain an intensity of light for each of the discrete wavelengths from the light received and calculates a characteristic value with respect to a wavelength distribution of light intensity, based on the intensities obtained;
- and
- determine whether the sheet is a first type or a second type by using the characteristic value.
Dependencies are inferred from the claim text.