| 摘要 |
A melting device melts solid ink into liquid ink by making an alternating current pass through an electrical conductor arranged in coils around a housing. The liquid ink is introduced into first and second chambers from a reservoir through a spool valve arrangement. The spool valve arrangement allows liquid ink to be injected into one chamber at once. While the first chamber is being filled, pressure is applied to the second chamber. The pressure applied to the second chamber urges the liquid ink in the second chamber to pass through a filter and an outlet. When the first chamber is filled to a predetermined level, pressure is no longer applied to the second chamber but to the first chamber. The pressure applied to the first chamber moves the spool valve arrangement to block the first chamber. While the pressure is applied to the first chamber, the second chamber is filled with the liquid ink. |
