OCE PRINTING SYSTEMS GMBH Patent applications |
Patent application number | Title | Published |
20130235138 | DEVICE FOR DRYING A RECORDING MEDIUM WHICH IS PRINTED WITH INK IN A PRINTER, AND METHOD THEREFOR - In a method or device to dry a web-shaped recording medium in a printer, the web-shaped recording medium is printed with aqueous ink and subsequently directed with a predetermined web tension past a heatable body whose contact surface that faces towards the recording medium is brought into contact with a side of said recording medium that has not been freshly printed to dry said recording medium in a drying operation. A first guide element is arranged before the heatable body and a second guide element is arranged after the heatable body, the first and second guide elements guiding the recording medium. The contact surface of the heatable body is substantially flat. A negative pressure device generates a negative pressure at the contact surface facing towards the recording medium. The negative pressure is deactivated in a halt operation, the deactivation process taking place continuously over an adjustable time interval. | 09-12-2013 |
20130176360 | METHOD TO CLEAN NOZZLES OF AT LEAST ONE INK PRINT HEAD WITH A FLUSHING MEDIUM IN AN INK PRINTING APPARATUS - In a method to clean nozzles and ink channels of at least one ink print head with a flushing medium in an ink printing apparatus, a necessary flushing quantity of the flushing medium that is to be provided and which is necessary for flushing of the ink print head in a flushing process is determined from either a predetermined flushing quantity predetermined depending on a print duration of the ink printing apparatus or from a drive flushing quantity derived from a flushing quantity curve that indicates a dependency of the flushing quantity on an elapsed time for an ink used in printing, the necessary flushing quantity being either said predetermined flushing quantity or the derived flushing quantity, whichever is greater. The determined necessary flushing quantity is used to flush the ink print head. | 07-11-2013 |
20110003245 | TONER FOR PRINTING METHOD AND METHOD FOR ELECTROPHORETIC PRINTING PROCESS - Amphiphilic toner which has both hydrophilic groups and lipophilic groups in the molecule, use thereof for an electrophoretic printing process, and method for an electrophoretic printing process using it. The toner is first dispersed in a non-polar carrier liquid, the toner-containing carrier liquid being transported from a charge image carrier by means of a transfer roller to a. point of transfer and from there transferred to a substrate. A polar liquid is added before transfer of the toner to the substrate. | 01-06-2011 |
20100202818 | DEVICE FOR FEEDING A PRINTING-MATERIAL WEB TO AN ELECTROGRAPHIC PRINTING DEVICE - In a device for supplying a printing substrate web to an internal transport path of the printing substrate web of a printing device, a device accepts the printing substrate web from the printing substrate web source. A drive unit is provided at an output of the device and draws the printing substrate web from the device. A buffer device having a buffer reservoir is provided at an output of the drive unit. The buffer reservoir has a negative pressure device that generates a negative pressure in a buffer reservoir. The negative pressure acts on the printing substrate web to pull the printing substrate web drawn by the drive unit into the buffer reservoir and thereby tensions the printing substrate web before it is supplied to the internal transport path. | 08-12-2010 |
20100046971 | METHOD FOR CONTROLLING A DEVELOPMENT PROCESS IN DIFFERENT OPERATING PHASES - In a method to control a development process and an electrographic process, at least one developer station inks a latent image on a carrier with a toner. The toner is extracted from a mixture of toner and toner particles and wherein first toner is supplied to the mixture. A characteristic value is determined for a status of the mixture from a model calculation in which a toner exchange rate and an operating aging rate are linked. The development process is at least one of monitored, controlled, or regulated depending on the characteristic value. Also in a related method for controlling a development process, a characteristic value is determined for a status of the mixture from a model calculation in which a change of a toner consumption rate for the toner within a time interval during operation of the developer station and a time constant are taken into account. At least one of monitoring, controlling, or regulating the development process depends on the characteristic value. | 02-25-2010 |
20090310987 | SYSTEM AND METHOD FOR DETECTING A FIRE IN A FIXER UNIT OF A PRINTER OR COPIER - In a fixer unit system and method to detect a fire in a fixer unit of an electrographic image generation device, at least one portion of a fixer region of the fixing unit is monitored with a photoelectric sensor arranged adjacent to a substrate material having a toner image to be fixed, at least one portion of radiation generated by at least one heat radiator of the fixer unit is not detected by the photoelectric sensor by not passing said at least one portion of the radiation generated by the at least one heat radiator through to the photoelectric sensor by use of an optical filter associated with the photoelectric sensor. An error signal is output when a fire in the fixer region is detected with the photoelectric sensor. | 12-17-2009 |
20090279922 | DEVELOPER STATION WITH SMOOTHING DEVICE AND METHOD FOR OPERATING A DEVELOPER STATION - In a developer station for a printer or copier, a rotating developer roller is provided having a mixture of toner particles and ferromagnetic carrier particles accumulated on a surface of the developer roller as a layer, and a transfer zone at which the toner particles are transferred away from the developer roller. A smoothing device is provided with a smoothing element arranged before the transfer zone, the smoothing element being charged with a mechanical tension in a rest state of the developer roller and designed such that it exerts a force on and over an entire width of the layer formed by the mixture of the toner particles and the carrier particles present on the developer roller and smoothes the layer before the transfer of the toner particles. Within the developer roller at least one magnet is provided. The smoothing element comprises a magnetizable material attracted toward said at least one magnet to create said mechanical tension. | 11-12-2009 |
20080260434 | Arrangement and Method for Inking an Applicator Element of an Electrophotographic Printer or Copier - In a method or system where inking in an electrophotographic printer or copier, a magnetic roller is provided having a rotatable magnetic roller sleeve having a circumferential surface to which a two-component mixture comprising toner particles and ferro-magnetic carrier particles adheres. An applicator element has a circumferential surface to be inked with toner particles and past which the two-component mixture adhering to the circumferential surface of the magnetic roller is guided to produce a toner layer on the applicator element. The magnetic roller has a magnetic rotor which comprises magnetic elements and arranged inside the magnetic roller sleeve. A magnetic rotor and the magnetic roller sleeve are moveable relative to one another. | 10-23-2008 |