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US 12,398,515 B2Granted
Used paper recycling apparatus
AssigneeSeiko Epson Corporation
InventorDaisuke Honda
Life of this patent
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Abstract
A used paper recycling apparatus includes a defibration unit that defibrates used paper to generate a defibrated product, an accumulation unit that accumulates the defibrated product to form a web, a sheet forming unit that forms a sheet by applying at least one of heating and compression to the web, a cutting unit that cuts the sheet into a predetermined length, and an optical sensor that is provided at an exit of the sheet forming unit and that measures density information of the sheet.
Claims5
A used paper recycling apparatus comprising:
- a defibration unit that defibrates used paper to generate a defibrated product;
- an accumulation unit that accumulates the defibrated product to form a web;
- a sheet forming unit that forms a sheet by applying at least one of heating and compression to the web;
- a cutting unit that cuts the sheet into a predetermined length;
- and
- an optical sensor provided at an exit of the sheet forming unit and including three color sensors that receive wavelengths of red, green, and blue, respectively, the optical sensor measuring density information about the sheet, the density information including a density of each of RGB color components of a color of the sheet and an RGB color difference of the sheet, the RGB color difference being a difference between a maximum value and a minimum value among density calculation values that correspond to average voltage values for the three color sensors, respectively, the average voltage values being average values of voltage values obtained for a predetermined cycle at the three color sensors, respectively.
3 more elements
Dependencies are inferred from the claim text.