Patent attributes
A theft-prevention ink pack device is provided, comprising a support member (70) having support lugs (73a, 74a, 75a, 75b) within a case (130) having ink spouts (66) and knife edges (69), a tray member (80) supported by the lugs (73a, etc.), spaced from the knife edges (69), an ink pack (90) placed on the tray member (80) and having a bag (92) containing ink (91), a pressboard (100) positioned behind the ink pack (90), and conical compression coil springs (120, 121) for pushing the pressboard (100). When the support member (70) is moved as it is pulled, the support provided by the support lugs (73a, etc.) of the tray member (80) is cancelled to cause the tray member (80) to fall down and the ink pack (90) is broken by the knife edges (69) and urged under pressure by the spring forces of the springs (120, 121) via the pressboard (100) to cause the ink to spurt through the ink spouts (66).
