| 摘要 |
PURPOSE:To detect ink end in a disposable ink jet head cartridge. CONSTITUTION:An ink holder 8 in a disposable ink jet head cartridge comprises an ink supply needle 4 for supplying ink from an ink cartridge 2 to the ink holder 8. Electrodes 22, 23 disposed, as ink end detecting mechanism, in the ink cartridge 2 detect ink end. |
