| 摘要 |
An ink jet printer prints on a moving web with two parallel rows of drop streams which are oblique to the direction of web movement. A deflection ribbon extends between the rows of drop streams and opposed catchers are disposed outwardly of the rows of drop streams. The drops in the drop streams are selectively charged to one of a plurality of charge levels. A drop deflecting field is generated by applying a potential to the deflection ribbon which is of like polarity to the charge on the drops. Individual drops are therefore deflected toward the catchers perpendicularly to the rows of drop streams. Drops in the drop streams may strike the web at one of a plurality of print positions or, if sufficiently charged, may be deflected to strike a catcher. |
