公开(公告)号：DE69402738T2

公开(公告)日：1997-11-13

申请号：DE69402738

申请日：1994-02-18

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: B41J2/14

Abstract: The body of a piezoelectrically operable ink jet printhead (12) is mounted in an upper side surface groove (48) formed in a mounting plate member (14). A rear bottom section (26) of the printhead body has an exposed top side surface portion (30) which is flush with the top side (44) of the mounting plate member and terminates forwardly of its rear end (42). A high density parallel array of mutually spaced linear conductive traces (52) is formed on this exposed top side surface portion, the traces being used to transmit electrical operating signals from a separate electronic driver to piezoelectrically drivable channel sidewall sections (36) within the interior of the printhead body. A multitiered printed circuit board (16) secured to the top side of the mounting plate member is used to connect the printhead to the electronic driver. The circuit board has a series of linear traces (52a) formed on its bottom side which register with and are soldered to the closely spaced printhead body traces (52), a spaced series of lower density spacing contact pads (54a) formed on its top side and releasably engageable with correspondingly spaced contact pads on the electronic driver, and internal crossover circuitry (62) that operatively connects the high density underside linear traces of the circuit board to its lower density top side contact pads.

公开(公告)号：AU684289B2

公开(公告)日：1997-12-11

申请号：AU6907794

申请日：1994-05-03

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14

Abstract: A differential drive system is used to actuate an ink jet printhead having a spaced, parallel series of internal ink receiving channels opening outwardly through ink discharge orifices formed in the printhead body. The channels are laterally bounded by a spaced series of piezoelectrically deflectable internal sidewall actuator sections of the printhead body interdigitated with the channels. The printhead body is specially configured to facilitate wiring access to spaced apart first and second electrical connection portions on each of the actuators. Electrical leads from a first controller are connected to the first actuator portions and are ganged in groups that are selectively connected to a driving voltage source, or to ground, by the first controller. A second controller has a first set of electrical leads similarly ganged in groups and connected to a first set of the second actuator portions, and a second set of unganged electrical leads individually connected to the rest of the second actuator portions. The second controller is operative to selectively connect any of its individual leads, or any of its ganged lead groups, to the driving voltage source or to ground. In conjunction with the dual controllers, this combination of ganged and individually addressable leads connected to the first and second actuator portions permits the actuators to be differentially driven in a manner digitally synthesizing a more complex bipolar drive system.

公开(公告)号：AU7019194A

公开(公告)日：1994-12-20

申请号：AU7019194

申请日：1994-05-13

Applicant: COMPAQ COMPUTER CORP

Inventor： HAYES DONALD J ,  STORTZ JAMES L

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J2/16

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 having a plurality of conductive sections mounted to a top side of the lower body portion and a corresponding plurality of conductive pins projecting from a bottom side of the lower body portion. Each of the conductive sections is electrically connected to the corresponding one of the conductive pins. 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 to 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：AU6784894A

公开(公告)日：1994-12-12

申请号：AU6784894

申请日：1994-05-04

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: B41J2/21 ,  B41J2/205

Abstract: A spot size modulatable, drop-on-demand type ink jet printhead for producing grey-scale images on a substrate. The ink jet printhead includes a main body portion having an ink-carrying channel extending therethrough and a piezoelectric actuator coupled to the ink-carrying channel. A spot size for droplets to form when striking the substrate after ejection from the ink-carrying channel is selected and a look-up table translates the selected spot size into a time period during which a voltage pulse is to be applied to the piezoelectric actuator by an associated switching structure to cause the ejection of a droplet of ink capable of forming a spot having the desired size. An associated control circuit causes the switching structure to initiate application of the voltage waveform, determines whether the voltage waveform has been applied to the piezoelectric actuator for the time period and terminates application of the voltage waveform upon expiration of the time period. The control circuit includes a sequencer which selectively asserts or deasserts at least one control signal to the switching structure, a timer which instructs the sequencer to initiate application of the voltage waveform and determines time elapsed since initiating application, and a comparator which compares the time period produced by the look-up table and the elapsed time determined by the timer.

公开(公告)号：AU684797B2

公开(公告)日：1998-01-08

申请号：AU7019194

申请日：1994-05-13

Applicant: COMPAQ COMPUTER CORP

Inventor： HAYES DONALD J ,  STORTZ JAMES L

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J2/16

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 having a plurality of conductive sections mounted to a top side of the lower body portion and a corresponding plurality of conductive pins projecting from a bottom side of the lower body portion. Each of the conductive sections is electrically connected to the corresponding one of the conductive pins. 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 to 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：DE69402738D1

公开(公告)日：1997-05-28

申请号：DE69402738

申请日：1994-02-18

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: B41J2/14

Abstract: The body of a piezoelectrically operable ink jet printhead (12) is mounted in an upper side surface groove (48) formed in a mounting plate member (14). A rear bottom section (26) of the printhead body has an exposed top side surface portion (30) which is flush with the top side (44) of the mounting plate member and terminates forwardly of its rear end (42). A high density parallel array of mutually spaced linear conductive traces (52) is formed on this exposed top side surface portion, the traces being used to transmit electrical operating signals from a separate electronic driver to piezoelectrically drivable channel sidewall sections (36) within the interior of the printhead body. A multitiered printed circuit board (16) secured to the top side of the mounting plate member is used to connect the printhead to the electronic driver. The circuit board has a series of linear traces (52a) formed on its bottom side which register with and are soldered to the closely spaced printhead body traces (52), a spaced series of lower density spacing contact pads (54a) formed on its top side and releasably engageable with correspondingly spaced contact pads on the electronic driver, and internal crossover circuitry (62) that operatively connects the high density underside linear traces of the circuit board to its lower density top side contact pads.

公开(公告)号：AT152046T

公开(公告)日：1997-05-15

申请号：AT94301186

申请日：1994-02-18

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: B41J2/14

Abstract: The body of a piezoelectrically operable ink jet printhead (12) is mounted in an upper side surface groove (48) formed in a mounting plate member (14). A rear bottom section (26) of the printhead body has an exposed top side surface portion (30) which is flush with the top side (44) of the mounting plate member and terminates forwardly of its rear end (42). A high density parallel array of mutually spaced linear conductive traces (52) is formed on this exposed top side surface portion, the traces being used to transmit electrical operating signals from a separate electronic driver to piezoelectrically drivable channel sidewall sections (36) within the interior of the printhead body. A multitiered printed circuit board (16) secured to the top side of the mounting plate member is used to connect the printhead to the electronic driver. The circuit board has a series of linear traces (52a) formed on its bottom side which register with and are soldered to the closely spaced printhead body traces (52), a spaced series of lower density spacing contact pads (54a) formed on its top side and releasably engageable with correspondingly spaced contact pads on the electronic driver, and internal crossover circuitry (62) that operatively connects the high density underside linear traces of the circuit board to its lower density top side contact pads.

公开(公告)号：AU6907794A

公开(公告)日：1994-12-12

申请号：AU6907794

申请日：1994-05-03

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: B41J2/045 ,  B41J2/055

Abstract: A differential drive system is used to actuate an ink jet printhead having a spaced, parallel series of internal ink receiving channels opening outwardly through ink discharge orifices formed in the printhead body. The channels are laterally bounded by a spaced series of piezoelectrically deflectable internal sidewall actuator sections of the printhead body interdigitated with the channels. The printhead body is specially configured to facilitate wiring access to spaced apart first and second electrical connection portions on each of the actuators. Electrical leads from a first controller are connected to the first actuator portions and are ganged in groups that are selectively connected to a driving voltage source, or to ground, by the first controller. A second controller has a first set of electrical leads similarly ganged in groups and connected to a first set of the second actuator portions, and a second set of unganged electrical leads individually connected to the rest of the second actuator portions. The second controller is operative to selectively connect any of its individual leads, or any of its ganged lead groups, to the driving voltage source or to ground. In conjunction with the dual controllers, this combination of ganged and individually addressable leads connected to the first and second actuator portions permits the actuators to be differentially driven in a manner digitally synthesizing a more complex bipolar drive system.

公开(公告)号：AU6786294A

公开(公告)日：1994-12-12

申请号：AU6786294

申请日：1994-05-04

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L ,  WALLACE DAVID B

IPC: B41J2/015 ,  B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J2/16

公开(公告)号：SG63741A1

公开(公告)日：1999-03-30

申请号：SG1997003064

申请日：1997-08-27

Applicant: COMPAQ COMPUTER CORP

Inventor： STORTZ JAMES L

IPC: G06F12/00 ,  G06F20060101 ,  G11C7/00 ,  H04N20060101 ,  G06F ,  H04N