摘要:
According to aspects described herein, there is disclosed an apparatus and method for dynamically registering an image relative to a target substrate media in a printing system. The apparatus and method including a marking engine, transport, sensing system and a correction module. The marking engine for generating the image for transfer to the target substrate media. The transport for moving the target substrate media along the path in the process direction to receive the image in a transfer area from the marking engine. The sensing system for detecting a characteristic of at least one other substrate media moved previously by the transport. Also, the correction module for altering the image generated by the marking engine based on at least one signal from the sensing system. The characteristic of the at least one other substrate media being detected from at least two portions of the path, the two portions disposed on opposed sides of the transfer area in the process direction.
摘要:
According to aspects described herein, there is disclosed an apparatus and method for steering a belt in an image transfer assembly. The apparatus includes a image-bearing belt, at least two image transfer nips and at least two belt steering rollers. The image-bearing belt receives portions of image-forming marking material, wherein the image-bearing belt is supported by rollers. The image-bearing belt moves in a process direction for conveying the received portions of the image-forming marking material. The at least two image transfer nips transfer at least one portion of the image-forming marking material to the image-bearing belt, wherein the image-bearing belt extends continuously between the at least two image transfer nips. The belt steering rollers being disposed remote from each other along the process direction of the image-bearing belt, wherein the belt steering rollers include idler rollers directly engaging the image-bearing belt.
摘要:
One disclosed feature of the embodiments is a method of aligning transport modules in a printing system, the method comprising a step (a) including passing at least one substrate media in a process direction through two adjacent belt driven transport modules with at least one module belt steering control disabled. The method also comprising a step (b) including detecting a position of at least one module transport belt in a cross-process direction using an edge sensor. Further, the method comprising a (c) including aligning the two adjacent transport modules based on the detected cross-process position.
摘要:
A method of controlling sheet flow in digital print engines in which the nip rollers are driven independently by individual variable speed motors and sheet position sensors are disposed at each path gate and bend. The sensors provide sheet position/velocity signals to a controller which varies the speed of the individual nip drive motors according to an algorithm to prevent mis-positioning of the sheets and jamming.
摘要:
A closed loop feedback method that continuously adjusts the lateral and skew position of a sheet includes a first sensor that is used to measure lateral sheet edge position. A second sensor measures the lateral sheet edge position at a certain distance from the first sensor. Sheet skew values can thus be calculated. Lateral and skew controllers provide outputs to lateral and skew actuators, respectively, to adjust the sheet position. A different method of registering sheets laterally and in skew enables active sheet deskew without translating the sheet in the cross-process direction. A sensor carriage position is controlled to find the sheet edge after which deskew control can start. The average value of the carriage position can then be fed in a feedforward manner to move the image location to match the average paper position. This achieves good average lateral registration and active skew control at a reduced cost.
摘要:
An integrated printing system is provided and includes at least two generally vertically aligned image marking engines and at least two generally horizontally aligned image marking engines. The printing system further includes at least one generally horizontal interface media transport for transporting media between and to the vertically aligned and the horizontally aligned image marking engines.
摘要:
A method of synchronizing the arrival of copy sheets at a photoreceptor in an image processing having a copy sheet path having a plurality of segments coupled at given transfer zones, a plurality of copy sheet drives, an image transfer station, a photoreceptor and a controller. The controller directs the image processing apparatus by tracking the movement of copy sheets at the image transfer station in relation to the movement of the photoreceptor, monitoring the movement of copy sheets at the transfer zones, determining the need to adjust the spacing of copy sheets along the plurality of segments of the copy sheet path, and suitably activating selected copy sheet drives.
摘要:
An apparatus and method for measuring substrate media thickness including a nip assembly having a first nip for engaging substrate media and transporting the media along a process direction. The first nip has a nip velocity. A sensor is in operative communication with the first nip for sensing the nip velocity. A processor is operably connected to the sensor. The processor determines a media thickness responsive to a change in nip velocity detected by the velocity sensor upon entry of the media in the first nip.
摘要:
Embodiments described herein are directed to characterizing a media curler for a printing. Test curls can be imposed on media having input curls with known input values using a media curler to be characterized. The media curler can impose the test curls based on curler settings of the media curler. Resulting output values from an interaction between the test curls and the input curls can be measured and the curler settings can be characterized based on the known input values and the resulting output values so that the media curler can be configured to respond to incoming media having a known input curl by applying curler setting to achieve a desired output curl.
摘要:
An apparatus for and method of handling substrate media in a marking device using toner. The apparatus including first and second rolls for handling the substrate media. The first roll applying pressure to the toner. After the application of pressure by the first roll, the toner remains partially unfused to the substrate media. The second roll subsequently engaging the pressed toner as the substrate media passes the second roll. The first roll and the second roll being disposed remotely from one another in a process handling direction of the substrate media. The method including the application of pressure to the unfused toner on the substrate media by a first roll. The method subsequently engages the pressed toner with a second roll for handling the substrate media.