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| Number | Title | Issue Date |
| 7380498 | Offset lithography system The inking system of an offset lithography press incorporates certain rollers running at different speeds. The hard rollers do not oscillate and the form rollers and the soft transfer rollers of the inking system oscillate endways. ... | 06/03/2008 |
| RE40160 | Method for controlling a quantity of medium transferable between two rollers A method for controlling a quantity of medium transferable from a screen roller of a printing machine onto a roller that is in contact with the screen roller includes exerting an influence upon a difference in circumferential speed between the screen roller and the ... | 03/25/2008 |
| 7207266 | Printing press A printing press contains a distributor roller, an oscillating roller which has a roller axle and a roller barrel, and a switching device for optionally releasing, in a first operating mode, and locking, in a second operating mode, an oscillating movement of the rol... | 04/24/2007 |
| 7121208 | Method of setting optimized pre-inking prior to the start of printing the current print job A method for setting optimal pre-inking before the start of printing in an inking unit in a press having at least one printing unit. The settings for the pre-inking are determined by an electronic control device belonging to the press. At least one standard characte... | 10/17/2006 |
| 7111553 | Method of kneading ink of a printing press and printing press In a printing press, ink fountain keys are disposed to be movable toward and away from an ink fountain roller of an ink fountain to allow them to have a predetermined gap therebetween and hence the amount of ink to be fed to a downstream roller to be determined. The... | 09/26/2006 |
| 7096787 | Printing press and method of controlling ink transfer roller A method of controlling an ink transfer roller is provided. This method achieves stabilized printing quality by evenly distributing ink transfer actions of the ink transfer roller for the number of rotation of a plate cylinder. The ink transfer action of an ink tran... | 08/29/2006 |
| 7096782 | Driving apparatus in printing press A driving apparatus in a printing press includes a plate cylinder driven by a printing press motor, an inking device drive-coupled to the plate cylinder, and a driving connecting/disconnecting mechanism. The mechanism connects and disconnects transmission of driving... | 08/29/2006 |
| 7059245 | Method of controlling printing presses A method of controlling printing presses includes setting inking by determining setting values for at least one of pre-inking and ink metering, which encompass inking zone opening and ink stripe width, and transmitting the determined setting values to controls of th... | 06/13/2006 |
| 6938550 | System and method for print screen tonal control and compensation A print screen tonal control and compensation system and method are provided in which a compensated density curve is utilized to increase press predictability, performance, resources consumption, color variation, and quality. A computerized test pattern is generated... | 09/06/2005 |
| 6892637 | Self-inking stamp with ink cartridge barrier A stamp pad holder for use in a self-inking hand stamp. The stamp pad holder has a stamp die box that holds a stamp forming material, ink cartridge and plastic within the die box. The stamp forming material is placed at the bottom of the die box. A pre-inked ink car... | 05/17/2005 |
| 6871590 | Inking system for a printing machine An inking system for a printing machine which has a relatively simple design and which is adapted for more stable ink transfer to a plate cylinder. The inking system includes an ink supply roller (15), one or more drivable inking unit rollers (14, 19),... | 03/29/2005 |
| 6823790 | Lithographic printing method, ink supplying apparatus, and printing press A lithographic printing method of supplying emulsion ink to a lithographic printing plate via a form roller, and disrupting emulsion on the form roller. The degree of the emulsion's disruption before printing has started is different from the degree of disruption af... | 11/30/2004 |
| 6745689 | Printing press having an inking unit and method of operating an inking unit A printing press includes an inking unit provided with a screen roller having, on a circumference thereof, a pattern formed of depressions fillable with a printing medium, another roller co-operatively engageable with the screen roller, and a drive device, the scree... | 06/08/2004 |
| 6732645 | Method of presetting ink In a first printing process in Steps S1 through S6, ink supply is controlled so that a measured printed density (Vn) is approximately equal to a first target density (V1). This provides a uniform amount of ink remaining on ink rollers after the ... | 05/11/2004 |
| 6715945 | Printing apparatus for performing quality control of printed paper sheet A printing apparatus includes an image reader for reading an image on a printed paper sheet to obtain image data, and a controller for controlling the image reader to obtain image data about a color chart including solid patches once for every predetermined number o... | 04/06/2004 |
| 6679169 | Ink control model for controlling the ink feed in a machine which processes printing substrates The present invention relates to a method for controlling the ink feed in a printing press which processes printing substrates (12) and features at least one inking unit and one computer and to a device for carrying out the method. The present invention i... | 01/20/2004 |
| 6668724 | Method for controlling a quantity of medium transferable between two rollers A method for controlling a quantity of medium transferable from a screen roller of a printing machine onto a roller that is in contact with the screen roller includes exerting an influence upon a difference in circumferential speed between the screen roll... | 12/30/2003 |
| 6481352 | Method for controlling a quantity of ink in an inking unit A method for controlling the ink quantity in an inking unit of a printing machine by a predetermined nominal value, using a vibrator roller oscillating between a fountain roller and the inking unit, and picking up an ink portion and surrendering it to the... | 11/19/2002 |
| 6367380 | Inking system with a belt and differential roller speeds To minimize the presence of roll-to-roll nips in an inking system for a printing plate cylinder, an ink transfer belt transfers ink from an ink transfer roller, which receives ink from a supply, to the ink receiving elements on a printing plate cylinder. ... | 04/09/2002 |
| 6041706 | Complete release blanket A printing press includes an interchangeable plate cylinder, in which the plate cylinder may have variable cutoff diameters. The plate cylinder is mounted in the printing press in rolling contact with a fixed diameter blanket cylinder. The ink rollers of ... | 03/28/2000 |
| 6029573 | Multifunctional inking station for a flexographic printing machine The disclosed multifunctional inking station comprises a plate cylinder (2), a textured cylinder (3) and means for supplying a determined quantity of ink to the textured cylinder (3). The means for supplying a determined quantity of ink to the textured cy... | 02/29/2000 |
| 6006664 | Offset printing device for a rotary printing machine An offset printing device is provided for a rotary printing machine having a plate cylinder carrying a dry flatbed printing plate, the printing device having an improved inking unit which reduces the occurrence and effect of contaminants. In the inking un... | 12/28/1999 |
| 5909707 | High-speed printing system having multiple slipping nips A dampening system for an offset printing press system uses an intermediate roll between the press system and dampening rolls to create multiple slipping nips. By driving the intermediate roll at a surface velocity greater than the dampening roll speed an... | 06/08/1999 |
| 5884557 | Damping unit for offset presses A damping unit for offset presses, which damping unit has a tipping roller which is immersed in a damping solution pan, a metering roller associated with the tipping roller, and a form roller which applies the damping solution to a printing plate of a pla... | 03/23/1999 |
| 5826505 | Drive for a printing press A drive is provided for a sheet-fed offset printing press having multiple printing units. Each printing unit has printing cylinders which are independently driven. Transfer drums are driven mechanically uncoupled from the printing cylinders, and may be in... | 10/27/1998 |
| 5823109 | Offset printing device for a rotary mchine printing machines An offset printing system includes an improved inking unit for applying ink to a rotatable plate cylinder, wherein the inking unit appreciably reduces the production of contaminants. In particular, the inking unit one or more ink application rollers that ... | 10/20/1998 |
| 5809891 | Hickey removal system Foreign particles are removed from the plate cylinder of an offset press by interconnecting two ink form rollers friction driven by the plate roller and/or a vibrating roller to rotate in unison at different surface velocities. The connection between the ... | 09/22/1998 |
| 5787811 | Flexographic printing press A printing press includes a central impression drum seated in bearings in a printing press frame. The drum is provided with a drive. At least one printing unit has a driven printing cylinder, which can be pressed against the central impression drum, and a... | 08/04/1998 |
| 5566613 | Method and apparatus for regulating ink distribution in an undershot inking unit of a printing machine An undershot inking unit and associated method are disclosed. The undershot inking unit includes an ink fountain roller that is controlled independently of the printing speed of the printing machine, and in which the rotational contact angle of the distri... | 10/22/1996 |
| 5454313 | Retrofit variable speed dampening apparatus for printing press A variable speed transmission apparatus is disclosed for controlling the rotational speed of a fountain roller in an offset printing press. The apparatus includes a mounting plate adapted to be mounted about the shaft of the fountain roller. A screw mecha... | 10/03/1995 |
| 5191835 | Film dampening system for a rotary offset press A film dampening system for a rotary offset press has a pan roller (101) rotated by a variable speed electric motor (111), the pan roller being covered with a hydrophilic material and being partially immersed in a trough (107) containing dampening solutio... | 03/09/1993 |
| 5192367 | Drive mechanism for a printed sheet varnishing device of a printing machine A device for varnishing printed sheets in a printing machine. The varnishing device includes a varnish pan, a varnish dipping roller and a metering roller for transferring varnish onto a varnishing cylinder. The dipping roller and the metering roller have... | 03/09/1993 |
| 5140900 | Ink distribution assembly An ink distribution assembly of the type including a fountain roller, an ink fountain for distributing ink on the surface of the fountain roller, a distributor roller, and a ductor roller for transferring ink from the fountain roller to the distributor ro... | 08/25/1992 |
| 5123351 | Speed match ductor assembly In a printing press, a ductor assembly for transferring ink from a slowly rotating fountain roll to a rapidly rotating ink receiving roll includes a carriage and first and second idler rolls supported in counterrotating engagement on the carriage. In one ... | 06/23/1992 |
| 5113761 | Inking device The present invention has as an object to provide an inking device which prevents the generation of vibration in rollers and is capable of supplying the amount of ink uniformly all the time to the surface of printing plate in the direction of its width. ... | 05/19/1992 |
| 5095820 | Printing unit including an inking assembly A printing unit for providing ink imprints includes a printing member and an inking assembly supplying ink to the printing member. The inking assembly comprises an ink reservoir; an endless flexible ink carrying element; a support for positioning the elem... | 03/17/1992 |
| 5090315 | Electronically controllable ink fountain roll drive system, and method A low-inertia, fast-acting servo motor (40) coupled through a gear to a fountain roll (20) of an inker is controlled and energized by an electronic control unit (45). The control unit controls acceleration of the fountain roll (20) during the period of ti... | 02/25/1992 |
| 4896602 | Method of and a circuit for metering ink in printing machines A stepper drive for an ink doctor roller of a rotary printing machine is power supplied by incremental voltages of uniform magnitude derived from the rotary speed of the machine. The magnitude of an ink metering step of the doctor roller is selected in an... | 01/30/1990 |
| 4867062 | Method of and a circuit for metering ink in rotary printing machines An ink metering method for an inking mechanism of a rotary printing machine having an ink fountain, a doctor roller, a separate electric motor for driving the doctor roller and a low speed of rotation relative to the printing machine, includes the selecti... | 09/19/1989 |
| 4841861 | Shifting gear for the inkbox of a printing press A shifting gear for the inkbox roller of a printing press having a freewheeling journal arranged on the roller axis including a drive pin connected to a slide block carried by the journal and a swingably borne slide block frame having a swinging axis conn... | 06/27/1989 |
