摘要:
There is provided a method and system evaluating performance of a printing device. In accordance with the method a diagnostic routine is executed on the printing device. The diagnostic routine evaluates performance of the printing device using a set of instructions stored on a computer-readable medium. The set of instructions are configured to identify a fault in the performance of the printing device based on an artifact identifiable on at least one diagnostic output. The diagnostic output is generated by the printing device with the identifiable artifact in accordance with the diagnostic routine for identifying the artifact and associated fault of the printing device.
摘要:
As set forth herein, a reusable transfer assist blade (TAB) assembly includes a replaceable blade assembly that is locked into position between a clamp assembly and an extruded portion of the TAB assembly. When the blade assembly requires replacement, spring tables on the clam assembly are biased upward to release the clamp assembly from the extruded portion, and the clamp assembly is rotated about a clamp tab-clamp pocket interface at the top of the TAB assembly. The blade assembly is removed and replaced, the clamp assembly is rotated back into position against the extruded portion, and the spring tabs re-engage interlocking features on the extruded portion to lock the replacement blade in position. The expensive extruded portion and clamp assembly are thus reused and the inexpensive blade assembly is discarded or recycled.
摘要:
A system and apparatus that removes and collects non-functional wire assemblies from dicorotron units is described. It has a removal tool with flexible levers mounted on the top of a storage box. The removal tool has an open top and bottom, the open bottom is aligned with an opening in the top of the box to permit a dislodged anchor and wire assembly to fall therethrough.
摘要:
A system and apparatus that removes and collects non-functional wire assemblies from dicorotron units is described. It has a removal tool mounted on the top of a storage box. The removal tool has an open top and bottom, the open bottom is aligned with an opening in the top of the box to permit a dislodged wire assembly to fall therethrough.
摘要:
A xerographic printing device, including a charging device having a shield. In some embodiments of the shield of the charging device in the xerographic printing device, a plurality of holes are provided in an evenly spaced linear fashion extending nearly a full length of the charging device shield on a downstream process side of the charging device shield. The charge device can be a corotron, a dicorotron, a scorotron, a discorotron, a pin corotron, a pin scorotron, or any other known or later developed charging device of that type.
摘要:
A method and apparatus for avoiding fuser jams in an image production device may include determining an entrance velocity of media entering a fuser nip during a print job, the fuser nip being the area of a fuser formed by a fuser roll meeting a pressure roll, determining an exit velocity of media exiting the fuser nip, determining a difference between the entrance velocity and the exit velocity, determining if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, wherein if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, retracting the pressure roll away from the fuser roll for a predetermined time period, determining if the predetermined time period has expired, wherein if the predetermined time period has expired, reposition the pressure roll to meet the fuser roll to reform the fuser nip, and resuming printing the print job.
摘要:
A method and apparatus for avoiding fuser jams in an image production device may include determining an entrance velocity of media entering a fuser nip during a print job, the fuser nip being the area of a fuser formed by a fuser roll meeting a pressure roll, determining an exit velocity of media exiting the fuser nip, determining a difference between the entrance velocity and the exit velocity, determining if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, wherein if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, retracting the pressure roll away from the fuser roll for a predetermined time period, determining if the predetermined time period has expired, wherein if the predetermined time period has expired, reposition the pressure roll to meet the fuser roll to reform the fuser nip, and resuming printing the print job.
摘要:
The present disclosure provides apparatus and method for supplying uninterrupted flow of solid-ink pellets to an image-forming device. The apparatus includes a container for retaining solid-ink pellets, and a selectably-inflatable bladder disposed within the container. Further, the apparatus includes a tube communicating the bladder with a pressure supply.
摘要:
A defect analysis system for a xerographic print engine includes a residual mass sensor that senses the two-dimensional signature structure of residual mass remaining on a photoconductive or other substrate surface after image transfer. Preferably, the sensor is a full width array that spans substantially an entire width of the photoconductive surface. This information is then processed and analyzed to determine a specific type of transfer defect present. This may include the quantified level of defect for each detected type. The defect analysis system may also include a closed-loop control system that can adjust various xerographic process parameters using feedback based on the identification and optionally magnitude of each specific defect type. The identified print quality defect, such as mottle, streaks, point deletions, graininess, etc. can then be used to determine a customized corrective control action to be taken by the feedback control of the xerographic print engine to remedy or compensate for the defect(s).
摘要:
Electrostatic printing processes utilize corona-charging units. When those units wear out or become faulty, they need to be replaced. This embodiment provides a tool that can be used to remove a faulty electrode wire assembly from the unit. This same tool when loaded with a new wire assembly can insert a new wire assembly into the emptied corona charging unit, sometimes referred to as a dicorotron unit. The tool, therefore, is used both to remove or insert a wire assembly from or into a dicorotron unit.