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| Number | Title | Issue Date |
| 7158732 | Method and system for using toner concentration as an active control actuator for TRC control A method of using toner concentration (TC) as an active actuator in the tonal reproduction curve (TRC) controller, so that not only will the TRC controller maintain the TRC of the output, but also all the electrostatic actuators will not diverge, and the toner conce... | 01/02/2007 |
| 6999703 | Ion toner charging device A device for ion charging airborne toner particles for the development of electrophotographic images is proposed. The ion toner-charging device subjects an airborne stream of toner particles to unipolar gas ions in the presence of an applied alternating electric fie... | 02/14/2006 |
| 6980751 | Developer humidifier An apparatus for developing a latent image recorded on a movable imaging surface, including: a reservoir for storing a supply of developer material including toner particles; a donor member being arranged to receive toner particles from the reservoir and to deliver ... | 12/27/2005 |
| 6895202 | Non-interactive development apparatus for electrophotographic machines having electroded donor member and AC biased electrode A non-interactive development system generates a toner cloud in a development zone by an AC biased stationary electrode positioned in contact with the back surface of a movable toned dielectric donor belt having a patterned electrode structure on the front surface t... | 05/17/2005 |
| 6597884 | Image forming apparatus including electrostatic conveyance of charged toner An electrophotographic image forming apparatus of the present invention deposits charged toner on a latent image formed on a photoconductive drum or similar image carrier to thereby produce a corresponding toner image. The apparatus includes a toner flyin... | 07/22/2003 |
| 6377768 | Device and method for inking a charge pattern using a toner spraying device A device and method for inking a charge pattern of a carrier medium. The device includes a toner sprayer that generates and directs a mixed toner stream onto a surface of an application element. The mixed toner stream includes a number of charge toner and... | 04/23/2002 |
| 6223013 | Wire-less hybrid scavengeless development system An apparatus for developing a latent image recorded on an imaging surface, including a housing defining a reservoir storing a supply of developer material including toner. A donor member is spaced from the imaging surface, for transporting toner on an out... | 04/24/2001 |
| 6102523 | Printer for large format printing using a direct electrostatic printing (DEP) engine A printer, with printing width (PW), is provided, for printing toner image on a substrate, having a width (WS) and a length (LS), comprising a DEP printing engine, having a toner delivery means, having a surface whereon charged toner particles are present... | 08/15/2000 |
| 6035170 | Reproduction machine including an electrostatic sonic toner release development apparatus An electrostatic sonic toner release (electrostatic STORE) development apparatus, and a multicolor image reproduction machine including such a development apparatus are provided for creating toner images with reduced development fields. The electrostatic ... | 03/07/2000 |
| 5953571 | Apparatus and method for loading a donor member An apparatus for simultaneously fluidizing, charging and loading toner onto a donor member in one step using a corona device which is enclosed and separate from the toner supply. An ion-air stream emanating from this charging device also directs the charg... | 09/14/1999 |
| 5943539 | Hybrid scavengeless development using a method for preventing wire strobing A developer unit for developing a latent image recorded on an image receiving member with marking particles, to form a developed image, including: a drive mechanism for moving the surface of the image receiving member at a predetermined process speed. A d... | 08/24/1999 |
| 5933684 | Interactivity sensor for electrophotographic printing An apparatus in which the developability and interactivity of electrostatically charged particles in a mixture of particulate material is measured. The sensor apparatus includes a transparent member positioned closely adjacent to a developer roller of an ... | 08/03/1999 |
| 5899608 | Ion charging development system to deliver toner with low adhesion Interdigitated electrodes on a donor roll enable uncharged toner to be picked up from a fluidized bed reservoir. This layer of toner is subsequently charged by exposure to a corona device and delivered to a development zone, where it is used to develop an... | 05/04/1999 |
| 5842089 | Development apparatus for developing electrostatic latent image held by holder by using nonmagnetic one component developer The present invention is intended to provide a compact development apparatus using a nonmagnetic one-component toner. The apparatus comprises a toner storage container, a toner supply roller, a toner passage through which supplied toner passes, and an att... | 11/24/1998 |
| 5805964 | Inorganic coated development electrodes and methods thereof An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an inorganic coating on at least a portion of the electrode member.... | 09/08/1998 |
| 5761578 | Corona wire cleaning by mechanical vibration of the wire Non-magnetic toner in a fluidized bed is charged by at least one corona wire extending through the bed, the non-magnetic toner surrounding the wire in the fluidized bed. In order to prevent build up of insulating particles on the corona wire (which leads ... | 06/02/1998 |
| 5758239 | Development system An apparatus for developing a latent image recorded on a surface is disclosed. The apparatus includes a housing defining a chamber storing a supply of developer material comprising toner. The toner donor member spaced from the surface and being adapted to... | 05/26/1998 |
| 5754930 | Fluidized toner development using a rigid porous donor roll An apparatus for developing a latent image recorded on an imaging surface, comprising a housing defining a chamber storing a supply of developer material comprising toner a porous toner donor member spaced from the surface and being adapted to transport t... | 05/19/1998 |
| 5742884 | Hybrid scavengeless development using a rigid porous planar electrode member An apparatus for developing a latent image recorded on a surface, the apparatus includes a housing defining a chamber storing a supply of developer material including toner; a toner donor member spaced from the surface and being adapted to transport toner... | 04/21/1998 |
| 5742885 | Development system employing acoustic toner fluidization for donor roll An apparatus for developing a latent image recorded on a surface including a housing defining a chamber storing a supply of toner. A toner donor member is spaced from the image bearing surface and adapted to transport toner to a region opposed from the su... | 04/21/1998 |
| 5355794 | Process and apparatus for dry printing Apparatus and method are disclosed for carrying a dry printing process comprising a bed ( 18; 56; 64; 124; 156) for a printing substrate (20; 54; 122) that is to be printed; a screen printing stencil mounted above the printing substrate and in direct cont... | 10/18/1994 |
| 5276488 | Donor belt and electrode structure supported behind the belt for developing electrostatic images with toner A scavengeless development system in which toner is detached from a donor belt and attracted to latent electrostatic images carried by an image receiver positioned adjacent the belt. Generation of a controlled powder cloud of toner particles is effected u... | 01/04/1994 |
| 5227270 | ESV readings of toner test patches for adjusting IRD readings of developed test patches In a single pass tri-level imaging apparatus, a pair of Electrostatic Voltmeters (ESV) are utilized to monitor various control patch voltages to allow for feedback control of Infra-Red Densitometer (IRD) readings. The ESV readings are used to adjust the IRD re... | 07/13/1993 |
| 4996538 | Apparatus for separating and recovering solid developer particles transported by a gaseous flow The invention relates to an apparatus for separating and recovering solid particles transported by a gaseous flow. The apparatus includes a separation chamber (40), an admission conduit (43) by which the gaseous flow laden with particles arrives, an escap... | 02/26/1991 |
| 4962723 | Image forming apparatus utilizing plural electric field generating arrangements so as to deposit developer particles supplied from a developer chamber An image forming apparatus for forming a developing powder image onto a recording medium comprising, a chamber for accommodating a developing powder and having an opening confronting the recording medium, first electric field generating device for generat... | 10/16/1990 |
| 4267450 | Method of eliminating background residual charge in electrophotographic image reproduction and apparatus for carrying out said method In an exemplary embodiment, a charge image resulting from x-ray exposure of a plate originally charged to 1.5 to 5 kV, is developed by applying powder of opposite polarity while applying a voltage of from 1 to 4.5 kV, also of opposite polarity, to a condu... | 05/12/1981 |
| 4246588 | Particle feed arrangement for applying solid particles to the image carrier of a non-impact printer A particle feed arrangement for applying solid particles contained in a particle storage tank to an image carrier of a non-impact printer. The arrangement includes a conveying member disposed to pass within a particle supply source to feed the particles t... | 01/20/1981 |
| 4213617 | Assembly for sealing lead-in areas in a developer station A sealing assembly for a developed station in a copying machine for sealing apertures in a casing wall of the developer station to prevent developer powder, including magnetizable particles, from escaping into the housing of the copying machine establishe... | 07/22/1980 |
| 4177757 | Magnetic brush developing device for developing electrostatic latent images In a device for developing electrostatic images with developer mix including magnetic carrier particles and triboelectrically charged toner particles which comprises a container for the developer mix, magnetic field producing means and an applicator enclo... | 12/11/1979 |
| 4154195 | Printing device utilizing solvent dissolved toner applied to a recording carrier A printing device in which solvent dissolved toner is applied to a recording carrier to produce a symbol or image wherein a printing head is received interior of a housing with toner particles circulated in the housing in a gas stream. Solvent ejectors wi... | 05/15/1979 |
| 4146325 | Method and apparatus for visualization of electrostatic images A method and apparatus for effecting the visualization of electrostatic images. During the deposition of the pigment in the developing area, the absorption of light is measured at least at one part of the surface of the image so as to form a signal, and t... | 03/27/1979 |
| 4057340 | Single component color development system An apparatus in which a latent image is developed with particles. A support member advances the particles from a storage chamber to the development zone. In the development zone, the particles are separated from the support member and attracted to the lat... | 11/08/1977 |
| 4033292 | Apparatus for developing latent electrostatic images Powder cloud development apparatus for developing latent electrostatic images on an insulating member, such as a photoconductive layer, wherein a cloud of charged developer particles is introduced into the development chamber through a first port in the c... | 07/05/1977 |
