(19)
(11) EP 4 437 862 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
13.11.2024 Bulletin 2024/46

(43) Date of publication:
02.10.2024 Bulletin 2024/40

(21) Application number: 21965613.9

(22) Date of filing: 25.11.2021
(51) International Patent Classification (IPC): 
A24C 5/34(2006.01)
 A24D 3/02(2006.01)
(52) Cooperative Patent Classification (CPC):
A24D 3/02; A24C 5/34
(86) International application number:
PCT/JP2021/043193
(87) International publication number:
WO 2023/095241 (01.06.2023 Gazette 2023/22)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(71) Applicant: Japan Tobacco Inc.
Tokyo, 105-6927 (JP)

(72) Inventors:
  • KOBAYASHI, Shota
    Tokyo 130-8603 (JP)
  • NAKAMURA, Satoshi
    Tokyo 130-8603 (JP)
  • IMUTA, Masahiro
    Tokyo 130-8603 (JP)
  • MATSUMOTO, Yoshitaka
    Tokyo 130-8603 (JP)
  • ODAHARA, Akari
    Tokyo 130-8603 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) INSPECTION DEVICE AND INSPECTION METHOD FOR FILTER


(57) An inspection device 50 for a filter 4 inspects the filter 4, which is provided to a flavor inhalation article 1. The filter 4 is provided with a mouthpiece end 16, a solid material 12, and a communication path 24 that communicates with the solid material 12 and opens to the mouthpiece end 16. The inspection device 50 is provided with: an illumination 52 for irradiating an inspection light onto the mouthpiece end 16 in an irradiation direction that extends along the axial direction X; a camera 54 for photographing the peripheral surface of the filter 4 in a photographing direction that extends along the radial direction Y of the filter 4; an image processing unit 62 for processing an image photographed by the camera 54 and detecting a shadow 68 of the solid material 12; and, an assessment unit 64 for assessing the presence or absence and the quality of the solid material 12 on the basis of the shadow 68 detected by the image processing unit 62.