US5146097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring gloss profile
Assignee: Nippon Paper Industries Co Ltd
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Filing: 1991-05-14
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Granted: 1992-09-08
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Expires: 2011-05-14
Abstract
Abstract This invention relates to a method for measuring a gloss profile of the surface of materials as paper, specifically coated paper, synthetic resin film, metals and the like. This method comprises the step of applying a spot of a monochromatic ultraviolet light to the surface of sample, moving the spot on the surface of the sample, photoelectrically converting a reflected light of each spot, obtained with a same reflective angle as an incident angle, and comparing and calculating the reflectance to determine the gloss profile.
Inventors
- 👤 Hideki Fujiwara
- 👤 Chizuru Kaga
- 👤 Isao Kano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:13
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/55; G01N21/57; G01N21/25; G01N21/31; G01N21/33
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A method for measuring a gloss profile comprising the steps of applying a spot of a monochromatic ultraviolet light to the surface of a sample to be measured; regularly moving said spot on the surface of a predetermined area of the sample; photoelectrically converting a reflected light of each spot, obtained with a same reflective angle as an incident angle, and comparing and calculating the reflectance to determine the gloss profile.
Claim 2
Independent Claim
71 words
A method for measuring a gloss profile comprising the steps of applying a spot of a monochromatic ultraviolet light to the surface of a sample to be measured; regularly moving said spot on the surface of a predetermined area of the sample; photoelectrically converting a reflected light of each spot, obtained with a same reflective angle as an incident angle, and comparing and calculating the reflectance to determine the gloss profile.
Claim 3
Dependent Claim
40 words
The method of claim 1, wherein said spot of monochromatic ultraviolet light is a polygonal spot of 0.1 to 3.0 mm on a longest side, or a circular or elliptical spot having a largest diameter of 0.1 to 3.0 mm.
Claim 4
Dependent Claim
21 words
The method of claim 1 or claim 2, wherein said monochromatic ultraviolet light has a wavelength of 210 to 230 nm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |