| 摘要 |
<p>An ink cartridge (30) includes a case (31), an ink supply opening (71), and a light transmissive member (70) positioned in the case and facing the ink supply opening (71). The light transmissive member (70) is configured to allow light entering via the ink supply opening (71) to pass therethrough. The light transmissive member includes a first reflection surface (82) having a first reflectance (R1) for light entering via the ink supply opening (71) and passing through the light transmissive member (70) when the first reflection surface (82) contacts ink stored in the ink chamber, and having a second reflectance (R2) for light entering via the ink supply opening and passing through the light transmissive member (70) when the first reflection surface (82) does not contact ink stored in the ink chamber, wherein the first reflectance (R1) is different from the second reflectance (R2).</p> |
