Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shinichi Fujisawa0
Akiko Kigawa0
Masayuki Matsubara0
Date of Patent
October 12, 2021
0Patent Application Number
201810020
Date Filed
October 2, 2018
0Patent abstract
A method of expanding a sheet includes the steps of gripping the sheet with a first gripping unit and a second griping unit and gripping the sheet with a third gripping unit and a fourth gripping unit, and expanding the sheet by moving the first gripping unit and the second griping unit away from each other in first directions relatively and moving the third gripping unit and the fourth gripping unit away from each other in second directions relatively. In the step of expanding the sheet, the states of the sheet that is under tension are detected, and movement of the first gripping unit, the second griping unit, the third gripping unit, and the fourth gripping unit is controlled based on the detected states of the sheet.
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