Title:
IMAGE FORMING APPARATUS FOR WEIGHT PROPERTY DETERMINATION
Document Type and Number:
WIPO Patent Application WO/2019/088488
Kind Code:
A1
Abstract:
An image forming apparatus and method are disclosed. A detection light is radiated to a medium. An amount of transmitted light, an amount of regular reflected light, and an amount of diffuse reflected light are detected. A reflected-light-amount-equivalent value is obtained when the amount of regular reflected light is standardized based on the amount of diffuse reflected light. A glossy sheet-thickness coefficient is calculated by adding the reflected-light-amount-equivalent value to a transmitted-light-amount-equivalent value that is based on the amount of transmitted light. The weight property of the medium is determined, based on the glossy sheet-thickness coefficient, wherein the weight property comprises a basis weight or a thickness of the medium.
Inventors:
TOMISHIMA YUICHIRO (JP)
Application Number:
PCT/KR2018/011915
Publication Date:
May 09, 2019
Filing Date:
October 11, 2018
Export Citation:
Assignee:
HP PRINTING KOREA CO LTD (KR)
International Classes:
B41J11/00; G01B11/06; G01J1/04; G01J3/02
Domestic Patent References:
| WO2014034209A1 | 2014-03-06 |
Foreign References:
| US5138178A | 1992-08-11 | |||
| US20050201808A1 | 2005-09-15 | |||
| US20070046713A1 | 2007-03-01 | |||
| US20150261161A1 | 2015-09-17 | |||
| EP3511776A1 | 2019-07-17 | |||
| US20170214812A1 | 2017-07-27 |
Other References:
See also references of EP 3600899A4
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
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