CA490型血液分析仪是一台较精密的仪器，其配套打印色带价格也较贵，一般使用一个多星期就打印模糊或无字迹了，我们在工作中发现，用杭州墨水厂生产的蓝色打印油3～4毫升，加入95％的酒精少许，配成色带油，可以使色带重新启用，且价廉。操作：用小螺丝刀小心打开已废弃的色带 CA490 hematology analyzer is a more sophisticated instrument. Its supporting printing ribbons are also expensive. Generally, it takes more than one week to print fuzzy or no writing. We found in the work that the blue ink produced by Hangzhou Ink Factory was used. 3 ~ 4 ml of printing oil, adding 95% of alcohol a little, dubbed in ribbon oil, can re-enable the ribbon, and cheap. Action: Carefully open the discarded ribbon with a small screwdriver