公开(公告)号：US20230410278A1

公开(公告)日：2023-12-21

申请号：US17840920

申请日：2022-06-15

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Christoforos Somarakis ,  Robert R. Price ,  Svyatoslav Korneev ,  Matt Patterson ,  Adrian Lew ,  Brendan Mcnamara ,  Eli Wilson

IPC: G06T7/00 ,  G06T7/136 ,  G06T7/194 ,  B33Y50/00 ,  B29C64/386

CPC classification number: G06T7/0004 ,  G06T7/136 ,  G06T7/194 ,  B33Y50/00 ,  B29C64/386 ,  G06T2207/30144

Abstract: Image processing techniques for determining print quality for a 3D printer are disclosed. An example method includes obtaining an image of material jetted from a nozzle of the 3D printer. The method also includes binarizing the image to distinguish background features from foreground features contained in the image. The method also includes determining, by a processing device, a jetting quality based on the binarized image.

公开(公告)号：US20220414380A1

公开(公告)日：2022-12-29

申请号：US17356604

申请日：2021-06-24

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Robert R. Price ,  Raja Bala ,  Svyatoslav Korneev ,  Christoforos Somarakis ,  Matthew Shreve ,  Adrian Lew ,  Palghat Ramesh

IPC: G06K9/00 ,  G06K9/62 ,  G06N3/08 ,  B41J2/045

Abstract: A method includes defining a model for a liquid while the liquid is positioned at least partially within a nozzle of a printer. The method also includes synthesizing video frames of the liquid using the model to produce synthetic video frames. The method also includes generating a labeled dataset that includes the synthetic video frames and corresponding model values. The method also includes receiving real video frames of the liquid while the liquid is positioned at least partially within the nozzle of the printer. The method also includes generating an inverse mapping from the real video frames to predicted model values using the labeled dataset. The method also includes reconstructing the liquid in the real video frames based at least partially upon the predicted model values.

公开(公告)号：US20230410277A1

公开(公告)日：2023-12-21

申请号：US17840886

申请日：2022-06-15

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Christoforos Somarakis ,  Robert R. Price ,  Svyatoslav Korneev ,  Matt Patterson ,  Adrian Lew ,  Brendan Mcnamara ,  Eli Wilson

IPC: G06T7/00 ,  G06T7/194 ,  G06V10/25 ,  G06V10/40 ,  G06T7/11 ,  G05B19/4093

CPC classification number: G06T7/0004 ,  G06T7/194 ,  G06V10/25 ,  G06V10/40 ,  G06T7/11 ,  G05B19/40932 ,  G06T2207/30144 ,  G06T2200/24 ,  G05B2219/36175

Abstract: Techniques for determining print quality for a 3D printer are disclosed. An example method includes obtaining an image of a stream of material jetted from a nozzle of the 3D printer, and binarizing the image to distinguish background features from foreground features contained in the image. The method also includes identifying elements of jetted material in the foreground features, and computing statistical data characterizing the identified elements. The method also includes generating a quality score of jetting quality based on the statistical data and controlling the 3D printer based on the quality score. The quality score indicates a degree to which the elements of jetted material form droplets of a same size, shape, alignment, and jetting frequency.

公开(公告)号：US11741273B2

公开(公告)日：2023-08-29

申请号：US16898994

申请日：2020-06-11

Applicant: Palo Alto Research Center Incorporated

Inventor： Svyatoslav Korneev ,  Vaidyanathan Thiagarajan ,  Saigopal Nelaturi

IPC: G06F30/17 ,  G06N3/04 ,  G06N3/08 ,  G06F119/18

CPC classification number: G06F30/17 ,  G06N3/04 ,  G06N3/08 ,  G06F2119/18

Abstract: A geometry of a substrate surface is received at a neural network. The neural network is trained using one or more training sets. Each training set comprises a different type of substrate geometry and a collection of manufacturing process parameters. The substrate is configured to receive at least one liquid droplet. A shape of the at least one droplet after it has been deposited on the substrate is determined based on the received geometry. An output representing the determined shape of the at least one droplet is produced.

公开(公告)号：US20210286910A1

公开(公告)日：2021-09-16

申请号：US16818379

申请日：2020-03-13

Applicant: Palo Alto Research Center Incorporated

Inventor： Nurcan Gecer Ulu ,  Svyatoslav Korneev ,  Saigopal Nelaturi ,  Erva Ulu

IPC: G06F30/12

Abstract: A method for producing a design includes receiving a set of design constraints. A spatial field is created based on the design constraints. The spatial field is represented with a linear combination of one or more bases. A number of the one or more bases is less than a number of elements in the spatial field. Respective weights are optimized for each of the one or more bases. A design is produced based on the spatial field and the weights.

公开(公告)号：US20230356302A1

公开(公告)日：2023-11-09

申请号：US17662092

申请日：2022-05-05

Applicant: Palo Alto Research Center Incorporated

Inventor： Giovanna Bucci ,  Svyatoslav Korneev ,  Adrian Lew ,  Morad Behandish

IPC: B22F10/80 ,  G05B19/4099 ,  B33Y50/00

CPC classification number: B22F10/80 ,  G05B19/4099 ,  B33Y50/00 ,  G05B2219/35134 ,  G05B2219/31103

Abstract: Techniques for calibrating a high fidelity (HF) model of molten droplet coalescence are disclosed. An example method includes selecting initial HF parameter values for the HF model. The method also includes iteratively refining the HF parameter values until the HF model converges with experimental data. At each iteration, the HF parameter values are applied to the HF model and a plurality of simulations are run using the HF model to generate the simulated numerical data. For each simulation, a Reduced Order Model (ROM) is fitted to the simulated numerical data to generate ROM parameter values for ROM parameters of the ROM. Correlations between the ROM parameters and the HF parameters are identified to narrow the search space to be searched in a next iteration.

公开(公告)号：US11571740B2

公开(公告)日：2023-02-07

申请号：US16821458

申请日：2020-03-17

Applicant: Palo Alto Research Center Incorporated

Inventor： Svyatoslav Korneev ,  Vaidyanathan Thiagarajan ,  Saigopal Nelaturi ,  Ziyan Wang

IPC: B33Y50/02 ,  B22D23/00 ,  B33Y10/00 ,  B33Y30/00 ,  G05B19/4099 ,  G06F113/10

Abstract: A computer representation of a printable product part and a plan for the printable product part to be deposited using an additive manufacturing process are received. The printable product part comprises an accumulation of material deposited by the additive manufacturing process. The plan comprises a tool-path representation of the printable product part and process parameters. A plurality of as-printed shapes of the printable product part are determined after it has been deposited according to the plan. Geometric differences between any of the plurality of as-printed shapes with the computer representation of the product part are determined.

公开(公告)号：US20220410273A1

公开(公告)日：2022-12-29

申请号：US17356627

申请日：2021-06-24

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Robert R. Price ,  Raja Bala ,  Svyatoslav Korneev ,  Christoforos Somarakis ,  Matthew Shreve ,  Adrian Lew ,  Palghat Ramesh

IPC: B22F10/80 ,  G06T17/00 ,  G06K9/00 ,  G06K9/62 ,  G06T7/64 ,  G06K15/02 ,  G06T7/00 ,  G05B13/04 ,  G05B13/02 ,  B22D23/00 ,  B22F10/22 ,  B22F12/90 ,  B33Y30/00 ,  B33Y50/00

Abstract: A three-dimensional (3D) printer includes a nozzle and a camera configured to capture a real image or a real video of a liquid metal while the liquid metal is positioned at least partially within the nozzle. The 3D printer also includes a computing system configured to perform operations. The operations include generating a model of the liquid metal positioned at least partially within the nozzle. The operations also include generating a simulated image or a simulated video of the liquid metal positioned at least partially within the nozzle based at least partially upon the model. The operations also include generating a labeled dataset that comprises the simulated image or the simulated video and a first set of parameters. The operations also include reconstructing the liquid metal in the real image or the real video based at least partially upon the labeled dataset.

公开(公告)号：US20220266512A1

公开(公告)日：2022-08-25

申请号：US17185814

申请日：2021-02-25

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Christoforos Somarakis ,  Svyatoslav Korneev ,  Saigopal Nelaturi ,  Adrian Lew

IPC: B29C64/209 ,  B29C64/112 ,  B33Y10/00

Abstract: A nozzle for a printing system is disclosed. The nozzle includes a tank in communication with a source of printing material. The nozzle also includes a constricted dissipative section in communication with the tank, which may include an elongated internal channel. The nozzle may also include a shaping tip in communication with the constricted dissipative section may include an exit orifice. The constricted dissipative section may be axisymmetric and may include at least three internal channels not in communication with one another. Also disclosed is an array of nozzles for a printing system including a plurality of nozzles, with each nozzle including a tank in communication with a source of printing material, a constricted dissipative section in communication with the tank and configured to obstruct fluid flow and having an elongated internal channel, and a shaping tip in communication with the constricted dissipative section may include an exit orifice.

公开(公告)号：US20210291261A1

公开(公告)日：2021-09-23

申请号：US16821458

申请日：2020-03-17

Applicant: Palo Alto Research Center Incorporated

Inventor： Svyatoslav Korneev ,  Vaidyanathan Thiagarajan ,  Saigopal Nelaturi ,  Ziyan Wang

IPC: B22D23/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A computer representation of a printable product part and a plan for the printable product part to be deposited using an additive manufacturing process are received. The printable product part comprises an accumulation of material deposited by the additive manufacturing process. The plan comprises a tool-path representation of the printable product part and process parameters. A plurality of as-printed shapes of the printable product part are determined after it has been deposited according to the plan. Geometric differences between any of the plurality of as-printed shapes with the computer representation of the product part are determined.