Directors (And Other Officers)
| Concept | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | As at 2025-06-24 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Directors (and other officers) | ||||||||||||
| Information about directors (and corporate auditors) | ||||||||||||
| Official title or position | 
                                                監査役
                                                
                                             | — | 
                                                取締役営業本部長
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                取締役研究開発センター担当
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                取締役生産本部長
                                                
                                             | 
                                                監査役(常勤)
                                                
                                             | 
                                                取締役経営企画部長
                                                
                                             | 
                                                取締役
                                                
                                             | 
                                                代表取締役社長
                                                
                                             | 
                                                監査役
                                                
                                             | 
| Name | 
                                                楢 﨑 隆 章
                                                
                                             | — | 
                                                大 谷 英 樹
                                                
                                             | 
                                                柏 木   孝
                                                
                                             | 
                                                伊 藤 雅 教
                                                
                                             | 
                                                渡 部 靖 彦
                                                
                                             | 
                                                岡   純 一
                                                
                                             | 
                                                桑 田 順 司
                                                
                                             | 
                                                戸 田 幹 洋
                                                
                                             | 
                                                須 藤   実
                                                
                                             | 
                                                戸 田 幹 雄
                                                
                                             | 
                                                青 本 悦 男
                                                
                                             | 
| Date of birth | 
                                                1952-02-10
                                                
                                             | — | 
                                                1965-03-20
                                                
                                             | 
                                                1954-01-02
                                                
                                             | 
                                                1950-11-22
                                                
                                             | 
                                                1952-07-25
                                                
                                             | 
                                                1948-08-20
                                                
                                             | 
                                                1955-10-21
                                                
                                             | 
                                                1975-11-01
                                                
                                             | 
                                                1951-04-13
                                                
                                             | 
                                                1943-03-05
                                                
                                             | 
                                                1953-06-25
                                                
                                             | 
| Career summary | — | |||||||||||
| Term of office | 
                                                (注)5
                                                
                                             | — | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)5
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)4
                                                
                                             | 
                                                (注)5
                                                
                                             | 
| Number of shares held (Ordinary shares) | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                197,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                4,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                9,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                179,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             |