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41.发明专利
公开(公告)号：DE102011085582A1
公开(公告)日：2012-05-03
申请号：DE102011085582
申请日：2011-11-02
Applicant: XEROX CORP
Inventor： POWERS RUSSELL J , ENDERLE JAN M , FOLKINS JEFFREY J
Abstract: Es werden ein System und ein Verfahren bereitgestellt, um eine fehlerhafte Tintenstrahlauswurfeinrichtung in einem Zieldruckkopf in einem Tintenstrahlbilderzeugungssystem zu kompensieren, das mehrere Druckköpfe aufweist, die so angeordnet sind, dass sie eine maximale Druckbreite überspannen, wobei eine typische Druckbreite, die kleiner als die maximale Druckbreite ist, festgelegt wird und wobei der Zieldruckkopf durch einen Druckkopf ersetzt wird, der in dem Randbereich außerhalb der typischen Druckbreite angeordnet ist. Das System und das Verfahren erlauben das Ersetzen des Zieldruckkopfs durch einen Druckkopf in dem Randbereich, der eine fehlerhafte Tintenstrahlauswurfeinrichtung aufweist, vorausgesetzt, dass die Position der fehlerhaften Tintenstrahlauswurfeinrichtung in dem Randbereichsdruckkopf nicht mit der Position einer fehlerhaften Tintenstrahlauswurfeinrichtung in Druckköpfen benachbart zu dem Zieldruckkopf übereinstimmt oder dazu ausgerichtet ist.
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公开(公告)号：DE602004015391D1
公开(公告)日：2008-09-11
申请号：DE602004015391
申请日：2004-11-08
Applicant: XEROX CORP
Inventor： AVILES EILEEN R , MANDEL BARRY P , KRUCINSKY MARTIN , FOLKINS JEFFREY J , BUDDENDECK KEITH A
Abstract: An ink image producing machine has (a) imaging devices (30), including at least one ink jet print head (32,34,36,38) and an image receiving station (92) for producing an ink image on a heated substrate (55); (b) a substrate handling assembly (40) including holding devices (42,44) for holding supplies of substrates, and transport feeding devices (51,107) for transporting and feeding substrates (55) in a substrate direction (41) towards the image receiving station (92); (c) a first substrate heating assembly (100) located upstream of the image receiving station (92) for initially heating each substrate (55) being fed and transported from the holding devices (42,44) ; and (d) a second substrate heating assembly (104) located downstream of the first substrate heating assembly (100) and upstream of said image receiving station (92), relative to the substrate feeding direction (41), for controllably re-heating each substrate (55), initially heated by the first substrate heating assembly (100), to a desired ink image receiving temperature.
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公开(公告)号：DE69813399T2
公开(公告)日：2003-11-06
申请号：DE69813399
申请日：1998-06-30
Applicant: XEROX CORP
Inventor： TABB CHARLES H , FOLKINS JEFFREY J , PIETROWSKI KENNETH W
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公开(公告)号：DE69813399D1
公开(公告)日：2003-05-22
申请号：DE69813399
申请日：1998-06-30
Applicant: XEROX CORP
Inventor： TABB CHARLES H , FOLKINS JEFFREY J , PIETROWSKI KENNETH W
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公开(公告)号：DE69622794D1
公开(公告)日：2002-09-12
申请号：DE69622794
申请日：1996-05-24
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY J
Abstract: Disclosed is a color printer including an image bearing member (10) having an imageable surface (11) for movement along a preselected path, at least a first imaging assembly (26,30) for forming sets of multiple black toner registration marks on different areas of the imageable surface, and for forming second sets of multiple non-black toner registration marks corresponding respectively to black marks in each set of the first sets of black marks so as to create a series of sets of multicolor registration marks. Each of the second sets is formed thus in accordance with a predetermined different condition of image misregistration relative to the corresponding first set of black toner marks. The color printer also includes a light source (142) for producing a wide area beam (172) to illuminate each set of the series of sets of multicolor marks, and a wide area beam (WAB) sensor (146) for measuring scattered or diffuse light (174) reflected from each set of the illuminated series of sets of multicolor marks, and for producing an actual light reflectance measurement value (Ca) from each such illuminated set. The printer further includes a comparing device for determining a degree of actual image misregistration by comparing each of the actual light reflectance measurement values with a stored predetermined registration offset value (Cp) corresponding to a predetermined condition of image misregistration for each illuminated set of multicolor marks. Mechanisms (137,138,139) are included in the printer for adjusting an imaging parameter of an imaging assembly responsively to the determined condition of actual misregistration so as to correct for the determined actual misregistration.
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Patent Agency Ranking
公开(公告)号：DE69801956D1
公开(公告)日：2001-11-15
申请号：DE69801956
申请日：1998-05-15
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY J
IPC: G03G15/01
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公开(公告)号：CA2025913C
公开(公告)日：1998-02-24
申请号：CA2025913
申请日：1990-09-21
Applicant: XEROX CORP
Inventor： SCHNEIDER ERIC J , SCHRAM JOSEPH G , FOLKINS JEFFREY J
Abstract: An apparatus for developing a latent image recorded on a photoconductive member in an electrophotographic printing machine having a reservoir for storing a supply of developer material and a magnetic brush roll for transporting material from the reservoir to each of two donor rolls. The developer material comprises carrier granules and toner particles. The donor rolls receive toner particles from the magnetic brush roll and deliver the toner particles to the photoconductive member at spaced locations in the direction of movement of the photoconductive member to develop the latent image recorded thereon.
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公开(公告)号：BR9304902A
公开(公告)日：1994-06-21
申请号：BR9304902
申请日：1993-12-01
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY J , BEHE THOMAS J , SCHRAM JOSEPH G
Abstract: A method and apparatus are described for developing latent images in a printing machine, using hybrid development, which ensure proper charging of the donor toner layer. The magnetic brush roll (46) is used to place toner on the donor roll (40) when the development of images is started and to remove toner from the donor roll when the development of images is stopped.
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公开(公告)号：DE3886797T2
公开(公告)日：1994-06-01
申请号：DE3886797
申请日：1988-03-18
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY J
Abstract: An electrophotographic printing apparatus comprising a photoreceptor (12) and an electrically biassed developer roll (56). Means (66) are provided for sensing the current biassing the developer roll (56) and for generating a proportional control signal for regulating a processing station. Preferably it is the discharge of toner which is regulated. Before the control signal is applied, it is modified by a further signal sampled at selected intervals. The further signal may be generated by either (a) a densitometer (24) measuring the mass to area ratio of the developer deposited on a test area of the photoreceptor (12); or (b) a voltage probe adjacent the photoreceptor. In an alternative embodiment the main control signal is generated by the voltage probe and is modified at selected intervals by the signal from the current sensing means (66).
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公开(公告)号：CA2021849A1
公开(公告)日：1991-02-22
申请号：CA2021849
申请日：1990-07-24
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY J
Abstract: An apparatus in which an electrostatic latent image recorded on a photoconductive member is developed with toner. A magnetic roll cooperates with a donor roll to define a nip therebetween. The magnetic roll advances a developer material comprising carrier and toner to the nip where a substantially constant amount of toner having a substantially constant triboelectric charge is deposited on the donor roll. A plurality of electrode wires are positioned in the space between the donor roll and the photoconductive member. The electrodes are electrically biased to detach the toner from the donor roll so as to form a toner cloud in the space between the electrodes and photoconductive member. Detached toner from the toner cloud develops the latent image.
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