PRINTING SYSTEM HAVING PRINTHEAD BYPASS
A printing system having a media width printhead having a first fluid port at one longitudinal end of the media width and a second fluid port at the other longitudinal end of the media width; a first fluid path connected to the first fluid port of the printhead, a second fluid path connected to the second fluid port of the printhead, a third fluid path interconnecting the first and second paths, wherein the first, second and third paths are configured so that fluid flows between the first and second paths via the printhead and via the third fluid path.
1 . A printing system comprising:
a media width printhead having a first fluid port at one longitudinal end of the media width and a second fluid port at the other longitudinal end of the media width;
a first fluid path connected to the first fluid port of the printhead;
a second fluid path connected to the second fluid port of the printhead;
a third fluid path interconnecting the first and second paths, wherein the first, second and third paths are configured so that fluid flows between the first and second paths via the printhead and via the third fluid path.
2 . A system according to claim 1 , further comprising a multi-path valve connecting the first path to the printhead and the third path.
3 . A system according to claim 2 , wherein the multi-path valve is operable to selectively provide fluid flow through the printhead and the third path.
4 . A system according to claim 1 , further comprising a fluid source having a first source port connected to the first path and a second source port connected to the second path.
5 . A system according to claim 4 , wherein the first, second and third paths, printhead and fluid source form a closed fluid flow loop in which fluid flows to and from the fluid source in either direction of the loop.