公开(公告)号：DE69018222D1

公开(公告)日：1995-05-04

申请号：DE69018222

申请日：1990-12-18

Applicant: XEROX CORP

Inventor： SCHMIDLIN FRED W ,  LINDENFELSER WILLIAM M ,  SOTACK JOHN D

IPC: G03G15/05 ,  B41J2/385 ,  B41J2/415

Abstract: Direct electrostatic printing apparatus including structure for delivering developer or toner particles to a printhead forming an integral part of the printing device. The toner particles are attracted from a toner delivery system (24) towards a support for an image receiving substrate (30), passing through apertures (76) in the printhead structure. The printhead structure includes control electrodes (70) and a shield electrode structure (72) secured to opposite sides of an insulative base (31). The radius of the opening of a control electrode (70) is smaller than the radius of a corresponding shield electrode (72) opening resulting in larger peak potentials for controlling toner flow for the same voltage applied to the control electrode of a printhead aperture wherein the control electrode opening is larger than the opening in a corresponding shield electrode opening.

公开(公告)号：DE69018222T2

公开(公告)日：1995-11-09

申请号：DE69018222

申请日：1990-12-18

Applicant: XEROX CORP

Inventor： SCHMIDLIN FRED W ,  LINDENFELSER WILLIAM M ,  SOTACK JOHN D

IPC: G03G15/05 ,  B41J2/385 ,  B41J2/415

Abstract: Direct electrostatic printing apparatus including structure for delivering developer or toner particles to a printhead forming an integral part of the printing device. The toner particles are attracted from a toner delivery system (24) towards a support for an image receiving substrate (30), passing through apertures (76) in the printhead structure. The printhead structure includes control electrodes (70) and a shield electrode structure (72) secured to opposite sides of an insulative base (31). The radius of the opening of a control electrode (70) is smaller than the radius of a corresponding shield electrode (72) opening resulting in larger peak potentials for controlling toner flow for the same voltage applied to the control electrode of a printhead aperture wherein the control electrode opening is larger than the opening in a corresponding shield electrode opening.

公开(公告)号：JP2002172779A

公开(公告)日：2002-06-18

申请号：JP2001355992

申请日：2001-11-21

Applicant: XEROX CORP

Inventor： GOORAY ARTHUR M ,  GEORGE J LAWLER ,  CROWLEY JOSEPH M ,  GALAMBOS PAUL ,  PETER FRANK J ,  ZAVADIL KEVIN ,  GIVLER RICHARD ,  LINDENFELSER WILLIAM M

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

Abstract: PROBLEM TO BE SOLVED: To provide fluid ejection system and method having improved performance characteristics. SOLUTION: A fluid ejector 100 comprises a movable piston constitution 110 and a stationary face plate 130. A small fluid chamber 120 is formed between the piston constitution 110 and a substrate 150. The piston constitution 110 is fixed resiliently to the substrate 150 by means of one or more spring component 114. Ejected fluid 140 is supplied from a fluid storage unit the small fluid chamber 120 through a fluid supplement hole 152 made in the substrate 150. The stationary face plate 130 has a nozzle hole 132 for ejecting a fluid jet or a droplet. The piston constitution 110 is moved toward the stationary face plate 130 by electrostatic attraction between the piston constitution 110 and the stationary face plate 130, and a part of fluid between the piston constitution 110 and the stationary face plate 130 is pushed out from the nozzle hole 132 to form a jet or a droplet.

公开(公告)号：JP2002166551A

公开(公告)日：2002-06-11

申请号：JP2001355993

申请日：2001-11-21

Applicant: XEROX CORP

Inventor： GOORAY ARTHUR M ,  GEORGE J LAWLER ,  CROWLEY JOSEPH M ,  GALAMBOS PAUL ,  PETER FRANK J ,  ZAVADIL KEVIN ,  GIVLER RICHARD ,  LINDENFELSER WILLIAM M

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

Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently starting an apparatus being driven electrostatically. SOLUTION: An electric drive system applies a drive signal 152 to an apparatus being started electrostatically such that a resulting electric field has a constant force. The electric drive system applies the drive signal 152 to a fluid ejector 100 being started electrostatically wherein the fluid ejector 100 comprises a piston 120, and a face plate 140 having an ejection nozzle 142. Ejected dielectric fluid is supplied between the piston 120 and the face plate 140. The drive signal 152 is applied to one of the piston 120 or the face plate 140 and causes to generate an electric fluid traversing the fluid between the piston 120 and the face plate 140. The electric field attracts the piston 120 electrostatically toward the face plate 140 and a jet or a droplet of fluid is ejected through the ejection nozzle 142.