Xerox Corporation

Jason Matthew LeFevre

Paul J McConville

Douglas K Herrmann

Seemit Praharaj

Michael Jon Levy

Chu-Heng Liu

James Michael Chappell

David Allen Mantell

David Alan Vankouwenberg

Santokh Singh Badesha

Roger Gaylord Leighton

Varun Sambhy

Derek Albert Bryl

David A VanKouwenberg

Jorge Antonio Alvarez

Rachael L McGrath

Christine Ann Steurrys

John T Newell

David P Vanbortel

Eric Robert Dudek

Jennifer Rea

Mojgan Rabbani

Douglas L Herrmann

Methods and systems for securely rendering a security feature with image data to be printed, can involve providing within the image data, data relating to a group of spots, and within the image data, mixing spots of two or more spot sizes among the group of spots to embed information within a stochastic or frequency modulation halftone image. In an embodiment, operations may be implemented for rendering a part of the image with a first spot among the group of spots and a remaining portion of the image with a second spot among the group of spots, wherein the second spot is smaller in size than the first spot.

Security printing using mixed spot sizes in stochastic or frequency modulated halftone images

A print system and a method for detecting and correcting underperforming LEDs in-line of a 3D object printer are disclosed. For example, the print system includes a plurality of printheads arranged in a two-dimensional array, a curing light source, an inline detection and correction (IDC) system, a movable member to hold an object and a test plate and a controller to control movement of the movable member to move the object and the test plate past the array of printheads, to operate the plurality of printheads to eject a marking material onto the object as the object passes the two-dimensional array of printheads, to operate the curing light source apply energy to the test plate and to cure the marking material, and to operate the IDC system to read the test plate to confirm that the curing light source is operating correctly based on a reading of the test plate.

In-line detection and correction of underperforming light emitting diodes in a curing station of a three dimensional object printer

A print system and a method for curing marking material on an object using an active transparent display in a three dimensional (3D) object printer are disclosed. For example, the print system includes a plurality of printheads, a curing light source, a movable member to hold an object, an active transparent display and a controller to control movement of the movable member to move the object past the array of printheads, to operate the plurality of printheads to eject the marking material onto the object as the object passes the two-dimensional array of printheads, to control movement of the movable member, to control the active transparent display and to operate the curing light source to apply energy to cure the marking material, wherein the amount of energy that is applied to the object is controlled by a mask that is displayed on the active transparent display.

Active transparent display for dynamic masking during UV curing in a three dimensional object printer

A printing module and a method for controlling the same are disclosed. For example, the printing module includes a plurality of printheads, a transport belt located below the plurality of printheads to transport print media below the plurality of printheads, wherein the transport belt comprises a plurality of vacuum openings, and a positive pressure plenum system, wherein the positive pressure plenum system provides a positive air flow to create an air interface between a top surface of the positive pressure plenum system and a bottom surface of the transport belt, wherein the positive pressure plenum system provides a negative air flow to create a vacuum through the plurality of vacuum openings of the transport belt to hold the print media against the transport belt.

Positive pressure plenum system for transport belts in a printing device

A method for measuring a blur of a print job and adjusting printer parameters in response to the blur is disclosed. For example, the method may be performed by a multi-function device (MFD) and includes printing an image on a print media, scanning the image, calculating a blur count for each location of the image in a cross-process direction, determining that the blur count for at least one location of the image is above a blur threshold, and adjusting at least one print parameter for a subsequently printed image on the MFD.

Method and apparatus to measure blur and adjust printer parameters in response to blur

A method, non-transitory computer readable medium and apparatus for applying an image shear to correct a digital image-paper registration error are disclosed. For example, the method, performed by a processor of a printing device, includes detecting an amount of skew of a paper traveling through a registration system of a printing device, determining that the amount of skew is greater than a predefined threshold, applying an image shear to a digital image that will be printed on the paper, and controlling a plurality of printheads of the printing device to print the digital image on the paper with the image shear that is applied.

Digital image-paper registration error correction through image shear

A print system and a method for curing marking material on an object using an active LED array in a three dimensional (3D) object printer are disclosed. For example, the print system includes a plurality of printheads, a curing light source comprising a plurality of light emitting diodes (LED) that are independently addressable, a movable member to hold an object, and a controller to control movement of the movable member to move the object past the array of printheads, to operate the plurality of printheads to eject the marking material onto the object as the object passes the two-dimensional array of printheads, to control movement of the movable member and to operate each one of the plurality of LEDs of the curing light source to apply energy in accordance with a shape of the object to cure the marking material.

Active light emitting diode ultra violet curing system for a three dimensional object printer

A system for printing on a multi-dimensional object includes a plurality of print heads, a mounting structure configured to receive an integrated object packaging and holder for an object and to movably mount on a support member, an actuator configured to move the mounting structure along the support member, and a processing device. The system also includes a non-transitory, computer-readable memory containing programming instructions that are configured to cause the processing device to control a movement of the mounting structure relative to the plurality of print heads, and operate the plurality of print heads to eject marking material onto an object mounted on the mounting structure.

Integrated object packaging and holder for direct-to-object printer

A print system and a method for detecting inline failure of a curing light source of a 3D object printer are disclosed. For example, the print system includes a plurality of printheads, a curing light source, an inline failure detection (IFD) system, a movable member to hold an object, a heat resistant member coupled to the movable member that holds a thermal paper for testing operation of the curing light source and a controller to control movement of the movable member to move the object past the array of printheads, to operate the plurality of printheads to eject the marking material onto the object as the object passes the two-dimensional array of printheads, to operate the curing light source to apply energy to the thermal paper and to cure the marking material, and to operate the IFD system to read the thermal paper to detect a failure of the curing light source.

In-line failure detection of a curing light source of a three dimensional object printer

A system for printing on a multi-dimensional object includes a plurality of print heads, a mounting structure configured to receive an integrated object packaging and holder for an object and to movably mount on a support member, an actuator configured to move the mounting structure along the support member, and a processing device. The system also includes a a non-transitory, computer-readable memory containing programming instructions that are configured to cause the processing device to control a movement of the mounting structure relative to the plurality of print heads, and operate the plurality of print heads to eject marking material onto an object mounted on the mounting structure.

A print system and a method for curing marking material on an object using a mask screen are disclosed. For example, the print system includes a plurality of printheads, a curing light source, a movable member to hold an object, a mask screen and a controller to control movement of the movable member to move the object past the array of printheads, to operate the plurality of printheads to eject the marking material onto the object as the object passes the two-dimensional array of printheads, to control movement of the movable member to catch the mask screen and to operate the curing light source to cure the marking material, wherein the amount of energy that is applied to the object is controlled by the mask screen.

Mask screen for UV curing

Provided is a printing apparatus that includes: a sheet path for moving a print substrate; a decurling station positioned along the sheet path and the decurling station. The decurling station includes an indenting roller mounted for rotation around a first longitudinal axis thereof and on a first side of the sheet path, and an elastomeric roller mounted for rotation around a second longitudinal axis thereof and on a second side of the sheet path. The indenting roller includes an indenter shaft and a an anti-contamination coating disposed on the indenter shaft, wherein a drop of aqueous ink exhibits a sliding angle of less than about 30&#xb0; and a contact angle of greater than about 40&#xb0; with a surface of the anti-contamination coating.

Anti-contamination coating for decurler indenting shaft

A method, non-transitory computer readable medium and apparatus for reducing contamination on a decurler in a printer are disclosed. For example, the method includes printing, by a marking engine, an image on a paper on a first side, inverting, by a first inverter, the paper so that the image on the first side is facing in an opposite direction than when passing through the marking engine and decurling, by the de-curler, the paper such that the image on the first side contacts a soft roller of the upstream de-curler.

Growing community of inventors

Penfield, NY, United States of America

Jason Matthew LeFevre