| 摘要 |
PROBLEM TO BE SOLVED: To permit to obtain sure fixing of members made of a material having a high polarity such as polyacetal resin, polyolefin resin, polyamide resin or the like by an epoxy base adhesive agent. SOLUTION: A fore shaft 1 and an ink tank 2 are provided respectively with screwed parts la, 2a as connecting parts. The epoxy base adhesive agent 10 is arranged in a gap formed between the screwed parts la 2a whereby the fore shaft 1 and the ink tank 2 are fixed. The screwing parts 1a of the fore shaft 1 is treated through sand blast treatment to form fine recesses and projections having an average height of 18 μm while the fine recesses and projections are fitted into cured epoxy adhesive agent so as to form recessed and projected forms whereby strong fixing can be obtained. |
