公开(公告)号：CH619761A5

公开(公告)日：1980-10-15

申请号：CH593777

申请日：1977-05-12

Applicant: IBM

Inventor： HIERONYMUS GERALD WHITFIELD ,  SENDELWECK MICHAEL LYNN ,  WEST JAMES EVERETT ,  WOODS JOE WILLIAM

IPC: B41J2/175 ,  F16K11/14 ,  F16K11/16 ,  F16K31/06 ,  F16K31/44 ,  B41J27/18

Abstract: A valve assembly having a small volume cavity formed therein which communicates with two valves, one of which is closed completely before the other one is opened and vice versa. An actuating mechanism holds a valving member in one of the valves in an opened condition to thereby maintain a fluidic path through the one valve and the cavity. The other valving member at this time lies in a closed position preventing communication between this valve and the cavity. The actuating mechanism when actuated moves away from the valving member in the open valve allowing the open valve to close completely. The fluidic path through the one valve is thereby broken. A second fluidic path is made when the actuating mechanism moves the other valving member to an opened position.

公开(公告)号：DE2361237A1

公开(公告)日：1974-06-12

申请号：DE2361237

申请日：1973-12-08

Applicant: IBM

Inventor： WOODS JOE WILLIAM ,  YOSMALI KRIKOR

IPC: B41J19/20 ,  B41J21/18 ,  B41J29/18 ,  B41J3/04

Abstract: An ink jet printing apparatus has provision for both line printing and character-by-character printing. A directionally oriented grating and associated circuitry is provided to maintain a record of character and ink drop printing locations. Also, provision is made for over-shooting the printhead some distance past each character printed during an incremental mode and for stopping the printhead to enable better visibility of the character just printed. Upon printing of the next character, the printhead first moves to the left a sufficient distance to get past the character box to be printed and sweeps to the right with the overshoot and stopping as before.