Ink-supply cartridge for printer roll
An ink cartridge has a pair of elongated, longitudinally extending, and transversely spaced side plates and a pair of short, transversely extending, and longitudinally spaced end plates bridging the side plates and forming therewith an downwardly open compartment adapted to hold a body of ink. Respective doctor blades extend transversely toward each other from lower edges of the side plates and define a floor of the compartment and a central downwardly open mouth adapted to feed ink from the body to a roll below the compartment. Respective axially spaced flexible bodies carried on the end plates are shiftable between outer positions generally disengaged from axial end edges of the doctor blades and inner positions bearing axially against the axial end edges.
1. An ink cartridge comprising:
a pair of elongated, longitudinally extending, and transversely spaced side plates;
a pair of short, transversely extending, and longitudinally spaced end plates bridging the side plates and forming therewith an downwardly open compartment adapted to hold a body of ink;
respective doctor blades extending toward each other from lower edges of the side plates and defining a floor of the compartment and a central downwardly open mouth adapted to feed ink from the body to a roll below the compartment;
respective axially spaced flexible bodies carried on the end plates and shiftable between outer positions generally disengaged from axial end edges of the doctor blades and inner positions bearing axially against the axial end edges.
2. The ink cartridge defined in claim 1 wherein the end plates are formed with confronting recesses in which the respective flexible bodies are at least partially recessed in the outer positions.
3. The ink cartridge defined in claim 2 wherein the flexible bodies have outer faces turned longitudinally away from each other and engageable with the respective actuators.
4. The ink cartridge defined in claim 1 , further comprising
respective actuators engaged between the flexible bodies and the respective end plates and operable to shift the bodies between the inner and outer positions.
5. The ink cartridge defined in claim 1 , further comprising
a seat in which the end and side plates are releasably latchable; and
means for unlatching the end and side plates from the seat.
6. The ink cartridge defined in claim 5 wherein the means for unlatching and the actuators are coupled together to move the bodies into the inner position on unlatching of the plates from the seat.