摘要:
An electrostatic measuring apparatus for measuring unknowns such as the electrostatic potential of a surface in a non-contacting manner, including a tuning fork and a sensing electrode, and in which the frequencies of two different vibration modes of the fork are separated by a slotted supporting structure which is united with the fork, and in which harmful amplitudes of vibration of the fork are avoided by an amplitude limiting structure integral with the sensing electrode. The amplitude limiting structure includes arms extending around the ends of the tines.
摘要:
An apparatus for reducing registration errors in a media handling device. The apparatus including an image-bearing member having sheets individually pass across the image-bearing member. Each sheet pass corresponds to one of a series of iterations between the image-bearing member and the sheets. The image-bearing member is operatively coupled to a controller for regulation motion of the image-bearing member. The controller receives input signals representing at least one measured disturbance. Each disturbance being defined by a pattern of image-bearing member movement away from and substantially returning to a reference state of motion. A repetition of the pattern being coincident with at least one of the iterations, wherein based on the measured disturbance, the reference state and an indication associated with when the pattern will repeat, a modified signal is generated for the actuator to adjust the image-bearing member motion in coordination with the indication.
摘要:
A method of creating a structural document may include determining, by a host computing device in a cloud system, a shape of a structural document, determining, by the host computing device, a plurality of dimensions of the structural document, receiving information associated with one or more content items, and causing a graphical representation of the structural document to be displayed at a user computing device. A shape of the graphical representation may correspond to the determined shape, a plurality of dimensions of the graphical representation may correspond to the determined plurality of dimensions, and the graphical representation may include at least a portion of the received content items. The method may include receiving an indication that a user is finished creating the structural document, generating a print document including an encoded data mark, and providing the print document to one or more print-related devices.
摘要:
A method of creating a structural document may include determining a shape of a structural document, determining a plurality of dimensions of the structural document, receiving information associated with one or more content items, identifying one or more security features associated with the structural document and causing a graphical representation of the structural document to be displayed at a user computing device. A shape of the graphical representation may correspond to the determined shape, a plurality of dimensions of the graphical representation may be representative of the determined plurality of dimensions, and the graphical representation may include at least a portion of the received content items and at least a portion of the identified security features. The method may include receiving an indication that a user is finished creating the structural document, generating a print document including an encoded data mark, and providing the print document to print-related devices.
摘要:
A xerographic marking device includes a media transport path and at least one two-color image-on-image (IOI) drum module. Each two-color IOI drum module includes in a process order around a photoreceptor: a) a first charging unit; b) a first exposure unit; c) a first development unit; d) a second charging unit; e) a second exposure unit; and f) a second development unit, wherein the intermediate transfer unit receives a first toned image and a second toned image from the photoreceptor in a single transfer and transfers those toner images to print media to produce a toned image on print media. In various embodiments, the xerographic marking device is modular and includes a common paper transport module having a cavity and a marking engine sized to fit within the cavity.
摘要:
An imaging module mounting apparatus is provided to improve dynamic performance without creating an overconstraint condition causing misalignment of the imaging module. Three solid mounts are used to establish and maintain critical location datums of the imaging module. A single or plurality of variably flexible mounts are used, depending on the size of the module, to maintain alignment while minimizing any overconstraint condition caused by the imaging module being distorted out of plane due to thermal distortion and/or static distortion of the mounting frame due to movement of the machine. The variably flexible mount is filled with a high-viscosity silicon polymer. Due to the high-viscosity of the medium, the mount does not respond to fast or high-frequency vibration and appears to be a rigid mount with regard to such movement. The mount will react to very low frequency or static distortion such as that caused by movement of the machine and/or thermal distortion and maintain the imaging module in the proper position to prevent perceptible image defects.
摘要:
An electrophotographic device for reproducing an image on an imaging member includes: processing elements for forming a toner-developed latent image on a charge retentive surface of the imaging member; a transfer station for transferring toner from the imaging surface to a second surface of a receiving member; an arrangement for enhancing toner release from the imaging surface, including a resonator in contact with and applying vibratory energy to the imaging member at a location at which toner release is desired having a resonator resonant frequency f.sub.r ; a coupler for coupling the imaging member to the resonator; a driving signal source electrically coupled to the resonator, and producing a driving signal selected to drive the resonator at frequency f.sub.r ; the imaging member, coupler and receiving member together defining a system having a first and second belt resonant frequency (f.sub.b1 and f.sub.b2, respectively) when excited by the toner release enhancer; and the belt resonant frequencies and the resonator resonant frequency selected so thatf.sub.r =(.sup.f b1+.sup.f b2)/.sub.2
摘要:
A single pass ROS system provides a plurality of latent images which may subsequently be developed in different colors. The ROS units are initially aligned so that each color image is precisely registered at the same relative position along the exposed area of a photoreceptor belt. The alignment is accomplished by forming a pair of opposed alignment apertures in the surface of the belt and detecting coincidence or lack of coincidence of signals generated by the beginning and end of each scan line. The skew correction is enabled by rotating an optical component in the ROS system to create the required rotation of the projected scan line so as to correct for the detected skew error caused primarily by belt conicity. Once the initial X and Y-axis alignments are complete, subsequent alignment is maintained through subsequent passes by checking the positions of the previously identified pixels as they advance past additional lead edge apertures formed in the process direction along the belt surface.
摘要:
An electrophotographic device having an imaging member with a charge retentive surface, driven along an endless path through a series of processing stations that create a latent image on the charge retentive surface, develop the image with toner, and bring a sheet of paper or other transfer member into intimate contact with the charge retentive surface at a transfer station for electrostatic transfer of toner from the charge retentive surface to the sheet. For the enhancement of toner release from a surface at any of the processing stations, a resonator suitable for generating vibratory energy is arranged in line contact with the back side of the non-rigid member, to uniformly apply vibratory energy thereto. The resonator includes a vibrational energy producing device; a horn member for transmitting vibrational energy, divided into a plurality of horn elements, each horn element including a horn portion and a contacting portion in substantially non-contacting relationship with a horn portion and a contacting portion or any adjacent horn elements, each horn vibrating when driven by the vibratory energy producing piezoelectric device, in an axial mode toner releasing vibration, and a transverse mode causing non-uniform response among the horn elements; and an energy dissipating media inserted into the inter element gaps for substantially damping the transverse mode vibration, while substantially allowing the axial mode vibration.
摘要:
Polygon scanners of the type used in ROS printers, are subject to centrifugal caused distortion at the mirror (facet) surface at certain rotational speeds. This distortion can affect the performance of the scanning beam at an image plane. Techniques are provided for predicting the radial facet distortion at expected rotational speeds, and for specific polygon designs. In one embodiment, the surfaces of the polygon facets are modified to incorporate the reverse of the radial distortion curve which is predicted at the rotational load. When operating at the rotational load, the facet surface then deforms to a desired planar (flat) configuration. In another embodiment, the polygon element structure is modified by adjusting the polygon modules of elasticity, weight density, and the polygon continuum to achieve a distorted facet surface at rotational speed which provides the functions normally provided by a post polygon lens.