Patent application number | Description | Published |
20100271417 | IMAGE QUALITY MATCHING IN A MIXED PRINT ENGINE ASSEMBLY SYSTEM - A method and system for improved image quality using an image quality matching method is used to match the optical density of single prints produced on multiple print engines by first sensing the optical density of a first image produced on a first print engine and then sensing the optical density of a second image produced on a second print engine before comparing the optical densities and determining if they are substantially equal. If they are not equal set points and exposures are adjusted on one or both print engines until the differences between the optical densities is less than 0.05, preferably 0.03. The density is changed by adjusting the initial voltage on the primary imaging member of at least one print engine and/or by adjusting the exposure of the primary imaging member of at least one print engine. | 10-28-2010 |
20100271643 | IMAGE QUALITY MATCHING IN A PRINT ENGINE ASSEMBLY SYSTEM - A method and system for improved image quality using an image quality matching method is used to match the optical density of single prints produced on multiple print engines by first sensing the optical density of a first image produced on a first print engine and then sensing the optical density of a second image produced on a second print engine before comparing the optical densities and determining if they are substantially equal. The density is changed by adjusting the initial voltage on the primary imaging member of at least one print engine and/or by adjusting the exposure of the primary imaging member of at least one print engine. | 10-28-2010 |
20100294154 | SCALING IMAGES IN A DUAL ENGINE SYSTEM - A method for making adjustable magnified images in a plurality of physically coupled print engines by printing a first print including two first fiducial marks related to an original document. The separation of the two first fiducial marks on the first print are measured. Then the second engine is adjusted after printing a second image that has at least two second fiducial marks and using the separation between the at least two second fiducial marks on the second print until the separation equals the separation of the two first fiducial marks. | 11-25-2010 |
20100296117 | SCALING IMAGES USING MATCHED COMPONENTS IN A DUAL ENGINE SYSTEM - A method for making adjustable magnified images in a plurality of physically coupled print engines by selecting matched printer components for certain critical components within the coupled print engines in order to minimize the differences in a printed image size in the physically coupled print engines. | 11-25-2010 |
20100329739 | METHOD AND APPARATUS FOR ALIGNING COUPLED DIGITAL PRINT ENGINES - The adjustment method aligns printing engines in a print assembly that is capable of printing on a receiver to form one or more final prints and includes corrections for cross-track misregistration. These adjustments are made in one embodiment by aligning two or more printing engines in an x and y direction relative to a paper path cross track reference and then aligning each printing engines in a cross track direction (z direction) relative to the paper path cross track reference based on measurements in the cross track direction (z direction) relative to the paper path cross track reference. | 12-30-2010 |
20100329740 | ALIGNMENT METHOD FOR A PLURALITY OF COUPLED DIGITAL PRINT ENGINES - The adjustment method aligns printing engines in a print assembly that is capable of printing on a receiver to form one or more final prints and includes corrections for cross-track misregistration. These adjustments are made in one embodiment by aligning two or more printing engines in an x and y direction relative to a receiver reference and then aligning each printing engines in a cross track direction (z direction) relative to the receiver reference based on measurements in the cross track direction (z direction). | 12-30-2010 |
20120076515 | REPLENISHING CONSUMABLE AT SERVICE TIME IN PRINTER - A receptacle in the printing system can hold either a first consumable stored in a first replaceable unit (RU) [customer-RU (CRU)], or a second consumable stored in a second RU. A marking engine prints selected print jobs having corresponding data at corresponding times on corresponding receivers, and a monitoring system records the data and times for a plurality of the jobs. A cost-estimating unit responsive to a received schedule including a plurality of service times uses the recorded corresponding data and the recorded corresponding times to estimate respective costs of installing the first and second RUs in the receptacle at a selected one of the service times. A decision unit decides which RU should be installed in the receptacle at the selected service time using the costs. An interface responsive to the decision unit indicates that the selected RU should be installed in the receptacle at the selected service time. | 03-29-2012 |
20120076516 | INDICATING CONSUMABLE REPLENISHMENT TIME - A printing system for indicating when to replenish a consumable includes a front end for providing a plurality of print jobs to be printed, each job having corresponding data. A marking engine uses a consumable to print selected jobs at corresponding times on corresponding receivers. A monitoring system records the corresponding data and corresponding times for a plurality of the jobs on the marking engine. A life-estimating unit estimates the end of life of the consumable using the recorded corresponding data and recorded corresponding times. An interface responsive to the life-estimating unit indicates that the consumable should be replenished. | 03-29-2012 |
20120076517 | EFFECTIVELY USING A CONSUMABLE IN TWO PRINTERS - In a multi-printer system with two marking engines, the jobs printed are monitored and the remaining lives of consumables in replaceable units (RUs) in the engines are estimated. A decision unit responsive to the estimated lives of the consumables determines that the first RU in the first marking engine should be moved to the second marking engine at a selected service time, so that a remaining amount of the consumable in the first RU is not discarded. | 03-29-2012 |
20120076518 | EFFECTIVELY USING TWO CONSUMABLES IN SINGLE PRINTER - A printing system for indicating a replaceable unit (RU) should be removed from a marking engine so that the consumable in the replaceable unit is not discarded includes a receptacle for holding the RU and a marking engine for using the consumable in the RU to print selected jobs. The jobs printed are monitored. A scheduling system responsive to a personnel schedule indicating service times and to the monitored print data selects a service time at which the RU should be removed from the receptacle and another at which it should be reinstalled in the receptacle, so that consumable in the RU is not discarded. | 03-29-2012 |
20120076541 | METHODS FOR OPERATING AN AUGER IN A DEVELOPMENT STATION - Methods for operating a development station are provided. In one aspect a method comprises the steps of: applying a first force at a first end of an auger and a second force at a second end of the auger with the first force and the second force being sufficient to rotate the auger against a drag exerted by the developer and the replenishment toner. Both the first force and the second force are less than a third force applied to a single driven end of an alternative auger to rotate the alternative auger against the drag and wherein the auger has a first yield strength at the first end and a second yield strength at the second end that are less than a third yield strength required to receive the third force at the driven end of the alternative auger. | 03-29-2012 |
20120076542 | DEVELOPMENT STATION WITH DUAL ACTUATOR DRIVE - Development stations are provided. In one aspect a development station has a housing having a recirculation path and an auger being rotatable to move the developer along at least part of the recirculation path. A first actuator drives a first end of the auger and a second actuator drives a second end. A first sensor senses a rotational position of the first end while a second sensor senses a rotational position of the second end of the auger. An auger controller causes the actuators to act so that a first force and a second force rotate the auger against a drag. The first force and the second force are less than a third force to drive an alternative auger from a driven end. The auger has a first end yield strength and a second end yield strength that are less than a driven end yield strength of the alternative auger. | 03-29-2012 |
20120076543 | DEVELOPMENT STATION WITH DUAL DRIVE - Development stations are provided. In one aspect, a development station has a housing having a recirculation path an auger being rotatable to move the developer along at least part of the recirculation path. A drive transmission has a first output mechanically linked for movement with a first end of the auger and a second output mechanically linked for movement with a second end of the auger and distributes a force at an input end between a first force provided at the first output and at a second force provided at the second output to rotate the auger against a drag. The first force and the second force are less than a third force to drive an alternative auger from a driven end. The auger has a first end yield strength and a second end yield strength that are each less than a driven end yield strength of the alternative auger. | 03-29-2012 |
20120076544 | METHODS FOR OPERATING DEVELOPMENT STATION AUGER - In one aspect, methods are provided for operating a development station. In one aspect a method comprises the steps of applying a first force at a first end of an auger and applying a second force at a second end of the auger with the first force and the second force being sufficient to rotate the auger against a drag exerted by a developer and a replenishment toner being moved by rotation of the auger; and, tensioning the auger along a length of the auger by urging the first end of the auger away from the second end and by urging the second end of the auger away from the first end. | 03-29-2012 |
20120076545 | DEVELOPMENT STATION WITH AUGER TENSIONING - Development stations are provided. In one aspect a development station has a housing having a recirculation path and an auger being rotatable to move the developer along part of the recirculation path. A first output is at a first end of the auger through which a first urging force urging the first end of the auger away from the second end can be applied and a second output at a second end of the auger through which a second urging force urging the second end away from the first end can be applied. At least one actuator generates an input force from which at least one of the first force and the second force can be provided; and a separator provides the first urging force and the second urging force to create a tension in the auger. | 03-29-2012 |
20120076546 | MULTIPLE LOCKING FEATURE ON A CARTRIDGE DOOR - A multiple locking feature on a cartridge door for a dry electrophotographic apparatus includes a cartridge wherein the cartridge contains a dry replenishment toner; a moveable door on the cartridge; multiple locking mechanism on the door for preventing accidental opening; and a key mechanism which unlocks the door when the cartridge is fully inserted into the electrophotographic apparatus. | 03-29-2012 |
20120076547 | METHOD FOR UNLOCKING A DOOR ON A CARTRIDGE - A method for unlocking a door on a cartridge for a dry electrophotographic apparatus includes inserting the cartridge into the electrophotographic apparatus; unlocking a first locking mechanism on the door with a first key mechanism on the electrophotographic apparatus when the cartridge is fully inserted into the electrophotographic apparatus; and unlocking a second locking mechanism on the door with a second key mechanism on the electrophotographic apparatus when the cartridge is fully inserted into the electrophotographic apparatus. | 03-29-2012 |
20120193468 | CORE DRIVING METHOD FOR PRINTER WEB MEDIUM SUPPLY - Methods for operating a printer web medium supply are provided in one aspect of the method. An input force is received and the input force is distributed to supply first force at a first end of a core having a web wound thereon and to supply a second force at a second end of the core with the first force and the second force being sufficient to control rotation the core against an inertial load of the core and web medium wound thereon. Both the first force and the second force are less than a third force applied to a single driven end of an alternative core to rotate the alternative core against the inertial load and wherein the core has a first yield strength at the first end and a second yield strength at the second end that are less than a third yield strength required to receive the third force at the driven end of the alternative core. | 08-02-2012 |
20120195671 | PRINTER WEB MEDIUM SUPPLY WITH DRIVE SYSTEM - Web medium supplies for a printer that uses a web medium on a core and printers are provided. In one aspect, the web medium supply has a frame with a first mounting support and second mounting support that are positioned along an axis of rotation. A first core mounting supports the core for rotation around the axis of rotation and a second core mounting supports the core for rotation around the axis of rotation. Rotation of the core is controlled by a first force applied to the first core mounting and a second force applied to the second core mounting that are both less than a third force that is sufficient to drive an alternative core against an inertial load of the core and web from one driven end. | 08-02-2012 |
20120321353 | SPEED OR TORQUE TO FILL DEVELOPER STATION - A system for filling a developer station for an electrophotographic printer including a sump containing developer; an auger in the sump to transport the developer; a shaft on the auger to drive the auger; a motor to drive the shaft of the auger; a mechanism for measuring speed or torque of the motor; a feedback mechanism; a filling mechanism for filling the sump with developer; and wherein filling is stopped or reduced when the speed or the torque reaches a predetermined setting. | 12-20-2012 |
20120321354 | METHOD FOR FILLING A DEVELOPER STATION - A method for filling a developer station for an electrophotographic printer includes mixing or transporting developer in a sump with an auger; driving the auger with a motor; measuring a speed of the motor or a torque applied by the motor or power used by the motor; sending speed, torque, or power information to a filling mechanism for filling the sump with developer; and stopping or reducing the flow of developer into the sump when the speed, torque, or power reaches a predetermined setting. | 12-20-2012 |
20130078002 | ELECTROPHOTOGRAPHIC PRINTER DEVELOPMENT SYSTEM WITH MULTIPLE AUGERS - A development system ( | 03-28-2013 |
20130078003 | METHOD FOR ELECTROPHOTOGRAPHIC PRINTING - A method for transporting developer in an electrophotographic printer ( | 03-28-2013 |
20130120494 | REDUCING CONDENSATION ACCUMULATION IN PRINTING SYSTEMS - A printing system includes one or more printing system components positioned opposite a moving print media. A wick assembly can be attached to a printing system component to wick condensation away from a surface of the printing system component that is opposite the moving print media. A heating element can be in contact with one or both of the wick assembly and a printing system component. A protective layer can be attached to the surface of a printing system component that is opposite the moving print media to prevent condensation from forming on the component. A vacuum assembly can be positioned opposite the moving print media to produce suction over the print media that pushes humid air or some condensation into the vacuum assembly. | 05-16-2013 |