公开(公告)号：CA710976A

公开(公告)日：1965-06-01

申请号：CA710976D

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER

公开(公告)号：CA704293A

公开(公告)日：1965-02-23

申请号：CA704293D

Applicant: XEROX CORP

Inventor： WAGNER EDWARD M VAN ,  SNELLING CHRISTOPHER

公开(公告)号：JPH1048923A

公开(公告)日：1998-02-20

申请号：JP11370297

申请日：1997-05-01

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER ,  MASHTARE DALE R

IPC: G03G15/05 ,  G03G15/02 ,  G03G15/16

Abstract: PROBLEM TO BE SOLVED: To implement zero graphic electrification and transcription process without any high voltage supply by generating electrification/surface electric potential for electrification or transcription using a pyroelectric material. SOLUTION: An electrification device 60 is constituted based on an idea of pyrotron which generates electrification/surface electric potential using thermal energy and contains pyroelectric materials (PVDF) 61 which are laminated on a grounded conductive roll 62. A heated conductive cleaning and neutralizing blade 64 is grounded and brought in contact with the PVDF materials 61 so that energy for electrifying this is supplied. Heating and cooling of the pyroelectric film such as PVDF provoke thermal expansion or contraction so as to change the surface charge density. This photoconductive member is electrified as necessary by using changes in the surface charge density before the photoconductive member is exposed on an image and at the same time the charge necessary for transcribing the image from the photoconductive member to a copy sheet is supplied.

公开(公告)号：DE69919602T2

公开(公告)日：2005-01-05

申请号：DE69919602

申请日：1999-01-07

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER ,  MASHTARE DALE R

IPC: G03G15/08 ,  G03G15/09

Abstract: A development system including a developer transport adapted for depositing developer material on an imaging surface having an electrostatic latent image thereon, including a housing defining a chamber storing a supply of developer material including toner. A donor member is mounted partially in said chamber and spaced from the imaging surface, for transporting developer on an outer surface thereof to a region opposed from the imaging surface. The donor member has a magnetic assembly, which includes a plurality of poles, and a sleeve, enclosing said magnetic assembly and rotating about said magnetic assembly. A magnetic system generates a magnetic field to reduce developer bed height of said developer material on said donor member in a development zone.

公开(公告)号：DE69917349D1

公开(公告)日：2004-06-24

申请号：DE69917349

申请日：1999-01-07

Applicant: XEROX CORP

Inventor： MASHTARE DALE R ,  SNELLING CHRISTOPHER

IPC: G03G15/08

公开(公告)号：DE69725248D1

公开(公告)日：2003-11-06

申请号：DE69725248

申请日：1997-07-25

Applicant: XEROX CORP

Inventor： MASHTARE DALE R ,  NOWAK WILLIAM J ,  SNELLING CHRISTOPHER

IPC: B06B1/06 ,  B06B3/00 ,  G03G15/08 ,  G03G15/16 ,  G03G15/01

Abstract: A cylindrical and rotatable resonating assembly, generally for use in electrostatographic applications. The resonating assembly is preferably positioned along a longitudinal axis generally transverse to the process direction of movement of a toner bearing member, for applying uniform vibratory energy thereto. The cylindrical form of the resonating assembly allows for rotation of the assembly while remaining in contact with the image bearing member to reduce frictional forces between a contact surface of the resonating assembly and the image bearing member which, in turn, reduces wear of the resonating assembly as well as the image bearing member. The resonating assembly may include a plurality of discrete individual resonator elements, each including a vibratory energy producing segment, such as a piezoelectric transducer, for generating vibratory energy and a waveguide segment coupled to the vibratory energy producing segment for transporting the vibratory energy from the transducer to the image bearing member.

公开(公告)号：DE69817695D1

公开(公告)日：2003-10-09

申请号：DE69817695

申请日：1998-06-10

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER ,  HAYS DAN A ,  FOLKINS JEFFREY J ,  MASHTARE DALE R

IPC: G03G15/06 ,  G03G15/08

Abstract: An acoustic scavengeless assist (ASA) development apparatus (40, 42, 44), forms part of a multicolor image reproduction machine (Fig. 1). The (ASA) development apparatus includes a biased vibratory section (46) having a piezoelectric member (85) and a donor member (88), as well as, a development electrode section (59), for presenting toner particles to latent electrostatic images for image development. The donor member (88) is positioned within the reproduction machine and forms a development nip with a latent image bearing surface (10) of a photoreceptor of the reproduction machine. Importantly, the biased vibratory section has at least a first conductive electrode (67) formed therein adjacent to said piezoelectric member (85) for effecting controlled vibratory toner release from the donor member (88), and a first bias for biasing the at least first conductive electrode. The development electrode section includes a set of second conductive electrodes (66) and a second bias (70) therefor, and is located between the at least first electrode (67) and the latent image bearing surface (10), for enhancing toner particle release from the donor member (88), and powder cloud formation within the development nip for quality image development.

公开(公告)号：DE69719618D1

公开(公告)日：2003-04-17

申请号：DE69719618

申请日：1997-06-24

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER ,  MASHTARE DALE R

IPC: G03G15/05 ,  G03G15/02 ,  G03G15/16

Abstract: Pyro-electric charging device (60) for charging grounded photo-conductive surface member (90) has a cylindrical conductive roll support structure (62) completely covered by a layer of pyro-electric film (61). The roll is placed in contact with the photo-conductive surface (97) and a heater (64) communicating with the film is used to produce surface potentials that charge the surface. Also claimed is printing apparatus having a photo-conductive surface, the claimed pyro-electric charging device, an imaging device for discharging the photo-conductive surface in image-wise configuration, a device for developing the image on the photo-conductive surface, a transfer device for transferring the image from the photo-conductive surface to a copy sheet, a fuser for fusing the image to the copy sheet, and an output device for receiving the copy sheet from the fuser.

公开(公告)号：DE69717917D1

公开(公告)日：2003-01-30

申请号：DE69717917

申请日：1997-06-24

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER

IPC: G03G15/16 ,  G03G15/01

Abstract: Apparatus for forming toner images on an image receiving member (2a-d) and transferring the toner images from the image receiving member to copy sheets comprises a transfer apparatus including a transfer intermediate member (7) having piezoelectric properties for transferring the images from an image receiving member, contained in image forming device(s) (1a-d) to the transfer intermediate member. The images are then transferred from the transfer intermediate member to copy sheets.

公开(公告)号：DE69717916D1

公开(公告)日：2003-01-30

申请号：DE69717916

申请日：1997-06-24

Applicant: XEROX CORP

Inventor： SNELLING CHRISTOPHER ,  MASHTARE DALE

IPC: G03G15/01 ,  G03G15/09 ,  G03G15/095 ,  G03G15/16

Abstract: Developed image noise is reduced by momentarily breaking the short range forces holding toner non-uniformly to a charge retentive surface (10) in an electrostatic image. The source of the image noise can be of a mechanical nature, such as, raking by carrier beads in conventional two component development. The short range forces are broken by applying ultrasonic vibration to the charge retentive surface (10). The ultrasonic vibration is applied after each development stage (32, 34) by means of transducers (39, 46).