公开(公告)号：EP0699134B1

公开(公告)日：1998-11-11

申请号：EP94917321.5

申请日：1994-05-03

Applicant: Compaq Computer Corporation

Inventor： WALLACE, David, B. ,  STORTZ, James, L.

IPC: B41J2/045

CPC classification number: B41J2/14209 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2002/14379 ,  B41J2002/14491

Abstract: An ink jet printhead (10) and an associated method for operatively driving the ink jet printhead (10) to cause the ejection of a volume modulatable droplet from an ink-carrying channel (32) thereof partially defined by a piezoelectric sidewall actuator (34). The voltage (53) applied across the sidewall actuator (34) is raised from a rest voltage (54) to a first voltage to deflect the sidewall actuator (34) from a rest position to a first position and maintained at the first voltage for a first period of time. The voltage applied across the sidewall actuator (34) is then dropped to a second voltage, lower than the rest voltage, to deflect the sidewall actuator from the first position, past the rest position, to a second position and maintained at the second voltage for a second period of time. The voltage applied across the sidewall actuator (34) is then returned to the rest voltage (54) to deflect the sidewall actuator (34) back to the rest position. The first and second time periods are selected, relative to each other, to select a droplet volume for ink ejected from the ink-carying channel. The voltage applied across the sidewall actuator is then returned to the rest voltage, thereby causing the ejection of a droplet of ink having the selected droplet volume.

公开(公告)号：EP0699135B1

公开(公告)日：1997-04-23

申请号：EP94919155.5

申请日：1994-05-13

Applicant: Compaq Computer Corporation

Inventor： HAYES, Donald, J. ,  STORTZ, James, L.

IPC: B41J2/16

CPC classification number: B41J2/1609 ,  B41J2/14209 ,  B41J2/1623 ,  B41J2/1632 ,  B41J2/1643 ,  Y10T29/42 ,  Y10T29/49401

Abstract: A single side interconnectable ink jet printhead and an associated method for manufacturing the same. The ink jet printhead includes a lower body portion (14) having a plurality of conductive sections (16) mounted to a top side (14a) of the lower body portion (14) and a corresponding plurality of conductive pins (20) projecting from a bottom side (14b) of the lower body portion (14). Each of the conductive sections (16) is electrically connected to the corresponding one of the conductive pins (10). A bottom side surface of each one of a plurality of generally parallel, longitudinally extending first intermediate body portions each formed of an active piezoelectric material poled in a first direction parallel to the top side surface of the lower body portion is conductively mounted to a portion of the top side surface of the lower body portion. A bottom side surface of each one of a plurality of generally parallel, longitudinally extending second intermediate body portions, each formed of an active piezoelectric material poled in a second direction opposite the first direction is conductively mounted to a top side surface of a corresponding one of the first intermediate body portions and a bottom side surface of an insulative upper body portion is conductively mounted to a top side surface of each of the plurality of second intermediate body portions.

公开(公告)号：EP0699135A1

公开(公告)日：1996-03-06

申请号：EP94919155.0

申请日：1994-05-13

Applicant: Compaq Computer Corporation

Inventor： HAYES, Donald, J. ,  STORTZ, James, L.

IPC: B41J2

CPC classification number: B41J2/1609 ,  B41J2/14209 ,  B41J2/1623 ,  B41J2/1632 ,  B41J2/1643 ,  Y10T29/42 ,  Y10T29/49401

Abstract: A single side interconnectable ink jet printhead and an associated method for manufacturing the same. The ink jet printhead includes a lower body portion (14) having a plurality of conductive sections (16) mounted to a top side (14a) of the lower body portion (14) and a corresponding plurality of conductive pins (20) projecting from a bottom side (14b) of the lower body portion (14). Each of the conductive sections (16) is electrically connected to the corresponding one of the conductive pins (10). A bottom side surface of each one of a plurality of generally parallel, longitudinally extending first intermediate body portions each formed of an active piezoelectric material poled in a first direction parallel to the top side surface of the lower body portion is conductively mounted to a portion of the top side surface of the lower body portion. A bottom side surface of each one of a plurality of generally parallel, longitudinally extending second intermediate body portions, each formed of an active piezoelectric material poled in a second direction opposite the first direction is conductively mounted to a top side surface of a corresponding one of the first intermediate body portions and a bottom side surface of an insulative upper body portion is conductively mounted to a top side surface of each of the plurality of second intermediate body portions.