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Class 399/57 - Liquid


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein a liquid level, concentration, or
No. of patents: 146
Last issue date: 01/10/2012


1        
NumberTitleIssue Date
8095027Image forming device and process cartridge
An image forming device contains: a latent image holding member; a latent image forming unit; a developer storage unit that stores a liquid developer including a toner and an aqueous medium; a developer supply member that supplies the liquid developer to a latent im...
01/10/2012
8036555Liquid measuring device with floating member having magnetic field generators
A liquid measuring device includes a floating member that is moved in accordance with a liquid surface, a first magnetic field generator that is disposed in the floating member and positions its north (N) pole to face a first direction, a second magnetic field gener...
10/11/2011
8014691Method of measuring and adjusting density of liquid developer by detecting movement of moving member in light path
A method of measuring density includes detecting movement of a moving member in a light path of light emitted from a light emitting member, measuring an output of a light receiving member for a case where the moving member is moved in the light path, as a first outp...
09/06/2011
8005383Liquid developer collecting system and image forming apparatus including the same
A liquid developer collecting system. A developing unit has a developing roller. A developing roller cleaning unit collects liquid developer on the developing roller. A concentration control unit stores liquid developer collected by the developing roller cleaning un...
08/23/2011
8005382Liquid developer collecting system and image forming apparatus including the same
A liquid developer collecting system includes a developing roller cleaning unit that collects liquid developer on a developing roller; a developer storage unit that stores the liquid developer collected by the developing roller cleaning unit; and a concentration con...
08/23/2011
8005384Liquid developer collecting system and image forming apparatus including the same
A liquid developer collecting system. A collection section collects liquid developer from a photosensitive body. A storage section stores liquid developer collected by the collection section. A first feed unit feeds liquid developer from the storage section to a con...
08/23/2011
7907857Hard imaging methods and hard imaging devices
Hard imaging methods and hard imaging devices are described. According to one embodiment, a hard imaging method includes forming a plurality of latent images, using a development assembly, developing the latent images using a liquid marking agent, transporting the l...
03/15/2011
7885565Development device, image forming apparatus and image forming method
A development device includes a developer carrier 20Y that carries liquid developer containing toner liquid and carrier liquid, a developer supply member 32Y that supplies liquid developer to the developer carrier 20Y, a developer carrier cleani...
02/08/2011
7869728Density detection device and image forming apparatus
In a density detection device, a casing includes an internal space. An inflow path is communicated with the internal space through an inlet facing the internal space. An outflow path is communicated with the internal space through an outlet facing the internal space...
01/11/2011
7809295Color image forming apparatus and method for stabilizing liquid developer viscosity
A color image forming apparatus includes, for each of liquid developers of plural colors, a photosensitive member, a developing roller, an agitating device that agitates a liquid developer having a viscosity characteristic dependent on a shearing force, and a develo...
10/05/2010
7792444Method for calibrating BID current in electro-photographic printer
A method for calibrating the BID current in an electrophotographic printer includes the steps of measuring electrode capacitance of an empty BID unit, installing the BID unit in an electrophotographic printer, comparing the measured capacitance with a calibration cu...
09/07/2010
7729627Image forming apparatus that detects concentration of liquid toner using light reflected through liquid toner
A first container is operable to accommodate a liquid toner, and provided with a window. A reflector is disposed in the first container. A light emitter is operable to emit light to the reflector through the window and the liquid toner. A light receiver is operable ...
06/01/2010
7729626Apparatus and method for adjusting concentration of liquid developer
In order to conform a specific correction table to the characteristics of a liquid developer to be used, the specific correction table is created by calibrating a standard correction table stored in advance by using a viscosity property value of a liquid developer f...
06/01/2010
7689137Liquid volume detector, liquid mixture supplying system adopting such liquid volume detector and image forming apparatus
A liquid volume detector for detecting the volume of a liquid in a container is provided with a liquid level detecting member which is arranged at a specified height position in the container and on which a load acts by the liquid when the liquid level in the contai...
03/30/2010
7668472Methods for moderating variations in writing parameters in liquid toner printing
A method of maintaining at least one writing parameter within a range during printing in a liquid toner printing system, comprising: setting an acceptable range for the at least one writing parameter; and, determining if the at least one writing parameter is within ...
02/23/2010
7643766Device for measuring concentration of toner in liquid developer, image forming apparatus provided therewith, and method for measuring toner concentration
Provided are a light-emitting portion having a light-emitting member and a light emergence surface through which light from the light-emitting member emerges, and a light-receiving portion having a light incidence surface through which the light from the light-emitt...
01/05/2010
7444093Liquid toner concentration detecting device and method with window in toner container for light passage
A first container is operable to accommodate a liquid toner, and provided with a window. A reflector is disposed in the first container. A light emitter is operable to emit light to the reflector through the window and the liquid toner. A light receiver is operable ...
10/28/2008
7412179Wet-type electrophotographic image forming apparatus and method for controlling collection of developer
A wet-type electrophotographic image forming apparatus includes a development unit for developing an image on a photosensitive medium, a developer cartridge for supplying a developer to the development unit, a developer collection unit disposed between the developme...
08/12/2008
7406274Controlling apparatus for developing roller, image forming device having the same, and developer controlling method thereof
An image forming apparatus having a developer controlling apparatus for a developing roller is provided to uniformly control an amount of developer deposited on the developing roller and a developer controlling method thereof. The apparatus includes a sensing part h...
07/29/2008
7400850Method and apparatus for improving image transfer in liquid electrostatic printing
A method for improving image transfer in liquid electrostatic printing includes applying at least one layer of toner to a surface, transferring the at least one layer of toner from the surface to an intermediate transfer member, and after transferring the at least o...
07/15/2008
7369269Print toner density mode/print media default link
A method for automatically selecting a print job parameter including the steps of ascertaining a first print job parameter and automatically selecting a second print job parameter based upon the first print job parameter. In one embodiment the method includes the st...
05/06/2008
7333754Image forming apparatus and method using liquid development
Squeegee rollers are disposed between a primary transferring position and a secondary transferring position on an intermediate transfer roller facing against the intermediate transfer roller. The squeegee rollers are movable between a contacting position to contact ...
02/19/2008
7330687Image fixing unit having preheating means for image forming apparatus and image fixing method using the same
An image fixing unit for a wet image forming apparatus comprises a fixing section and a preheating means. The fixing section has a first fixing roller, and a second fixing roller which rotates in close contact with the first fixing roller to feed paper through a gap...
02/12/2008
7316515Liquid processing apparatus processing a substrate surface with a processing liquid, liquid processing method, and liquid condition detection apparatus detecting fluctuation of the processing liquid
In a liquid processing apparatus a spin chuck holds a wafer having a surface supplied with a liquid to be applied through a nozzle receiving the liquid through a feed path and whether the liquid passing through the feed path has fluctuation is detected by a fluctuat...
01/08/2008
7315704Wet-type image forming apparatus, a toner concentration sensing method, and a method for controlling wet-type image forming apparatus
A wet-type image forming apparatus and method is provided to sense and maintain a toner concentration level of a developer, and includes a counter for counting the number of dots of input print data, a memory for storing an average coverage of a print medium which c...
01/01/2008
7263302Detector for detecting abnormality in developer passage, image forming device having the same and detection method thereof
A detector for detecting an abnormality in the developer passage includes a sensing unit for detecting a rotational speed of the developer pump, a rotational speed storage for storing rotational speed reference of the developer pump, and a controller for controlling...
08/28/2007
7248060Test apparatus for evaluating electrical properties of liquid toner and test method for the same
A test apparatus to evaluate the electrical properties of a liquid toner in which a printing quality of the liquid toner may be predicted by evaluating the electrical properties of the liquid toner without performing printing. The test apparatus to evaluate the elec...
07/24/2007
7228080System for active toner concentration target adjustments and method to maintain development performance
A closed-loop toner concentration adjustment system extends xerographic process control performance with a system and method including a first controller to adjust toner concentration (TC) in a developer of the imaging device to alter a DMA level of the imaging devi...
06/05/2007
7200348Volatile organic compound detector
A printer system using inks, toners or developers with solvents therein is provided with a detector for volatile organic compounds assists in reducing potential accidents in the printer. The detector may be able to identify at least a threshold level of volatile org...
04/03/2007
7162896Apparatus for checking the formation of scale, and water-carrying appliance
An apparatus allows monitoring the formation of scale. The apparatus makes it possible to determine the degree of water hardness or a tendency of the degree of water hardness to change over time and to take measures for adjusting the desired degree of water hardness...
01/16/2007
7163283Reuse of solvent startup/shutdown fluid for concentration control
A system to recycle waste ink for reuse as replenishment fluid is for an inkjet print station that includes a printhead with a fluid inlet and a fluid outlet. The system uses an ink supply tank, an external ink supply tank with fresh ink and an ink supply valve to c...
01/16/2007
7144671Adjuvants for negatively charged toners
Negative liquid electrographic toner compositions are provided comprising a liquid carrier having a Kauri-Butanol number less than about 30 mL and a plurality of negatively charged toner particles dispersed in the liquid carrier. The toner particles comprise a polym...
12/05/2006
7118842Charge adjuvant delivery system and methods
A system for printing a liquid toner is provided comprising a liquid electrographic toner composition comprising a liquid carrier having a Kauri-Butanol number less than about 30 mL and a plurality of charged toner particles dispersed in the liquid carrier, wherein ...
10/10/2006
7088932System and method for measuring charge/mass and liquid toner conductivty contemporaneously
A method measures the conductivity (σ) of a liquid or paste electrophotographic toner by providing two parallel plane conductive plates with a uniform separation (d) between the plates to form a space between the plates; filling the space between the plates with li...
08/08/2006
7082271Image forming apparatus and image forming method using liquid development
A CPU 113 executes a control program stored in a memory 116, whereby a patch image is formed on a photosensitive member of a photosensitive member unit 10, a light emitter 171 irradiates light upon the patch image, a light receiver 172...
07/25/2006
7079792Developing unit using a developing liquid and image forming apparatus including the same
A developing unit includes a developing roller including a roller portion. The developing roller is rotatable while carrying a developing liquid on the roller portion. The developing unit also includes a voltage applying device that applies a voltage to the roller p...
07/18/2006
7070900Adjuvants for positively charged toners
Positive liquid electrographic toner compositions are provided comprising a liquid carrier having a Kauri-Butanol number less than about 30 mL and a plurality of positively charged toner particles dispersed in the liquid carrier. The toner particles comprise a polym...
07/04/2006
7062202Image forming apparatus and method using liquid development under an image forming condition in which an adhesion amount of toner is substantially saturated
A CPU 113 executes a control program stored in a memory 116 thereby forming a plurality of patch images with a developing bias increased for each of the patch images; detecting a density of each of the patch images by means of a patch sensor 17;...
06/13/2006
7054569Wet electrophotographic image forming machine and method for recognizing a use life of a development cartridge used therein
A wet electrophotographic image forming machine that informs a user of a timing for replacing development cartridges. The image forming machine comprises a control section for sensing the condition of the developer stored in one or more developer housings on the bas...
05/30/2006
7039343Image forming apparatus using a developing liquid
An image forming apparatus configured to use a highly viscous, dense developing liquid including a carrier liquid and toner. The apparatus includes a developing unit with a developer carrier and a coating member for coating the developing liquid on the developer car...
05/02/2006
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