公开(公告)号：US11522694B2

公开(公告)日：2022-12-06

申请号：US17184173

申请日：2021-02-24

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： Scott Richard Castle ,  Alexander Lloyd Chapman ,  Keith Bryan Hardin

IPC: H01L41/00 ,  H04L9/08 ,  H04L9/32 ,  G10K11/00 ,  H02N2/00

Abstract: The present invention is a diverse acoustical object containing a range of particles that have acoustical wave impedances that are substantially different from the binder. The particles create a substantially different reflection as an acoustic wave is scattered by the particles. A negative reflection is created when the scattered wave is from a particle that has a wave impedance that is substantially less than the binder impedance. Practically, it may be necessary to encase this material in a thin material that will withstand the fabrication process (e.g., air or silicone elastomer could be encased in glass). If the wavelength is large compared to the encasing material thickness, then the reflection will be more dependent on the interior material. A mixture of materials that generate positive as well as negative reflections within the binder would add to the complexity of the PUF.

公开(公告)号：US11947279B2

公开(公告)日：2024-04-02

申请号：US17701762

申请日：2022-03-23

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： Alexander Lloyd Chapman ,  Clare Cabahug Maxino ,  Neilson Gutay Navarrete ,  Michael Todd Phillips ,  Scott Daniel Reeves ,  Daniel Lee Thomas

IPC: G03G15/00 ,  G01F23/00 ,  G01F23/296 ,  G03G15/08

CPC classification number: G03G15/0858 ,  G01F23/00 ,  G01F23/2966 ,  G03G2215/0888

Abstract: A system for sensing material within a container includes a container having a reservoir for storing material and an impact member configured to selectively impart an impulse force on the container to cause vibration of the container. A sensor is configured to sense the vibration of the container upon the impact member imparting the impulse force on the container. Processing circuitry in communication with the sensor is configured to determine an estimate of an amount of the material in the container based on the sensed vibration of the container.

公开(公告)号：US11947282B2

公开(公告)日：2024-04-02

申请号：US17701758

申请日：2022-03-23

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： Alexander Lloyd Chapman ,  Clare Cabahug Maxino ,  Neilson Gutay Navarrete ,  Michael Todd Phillips ,  Scott Daniel Reeves ,  Daniel Lee Thomas

IPC: G03G15/08 ,  G03G15/00 ,  G03G21/10 ,  G03G21/12

CPC classification number: G03G15/0868 ,  G03G15/0848 ,  G03G15/0856 ,  G03G15/0858 ,  G03G15/086 ,  G03G15/556 ,  G03G21/10 ,  G03G21/12 ,  G03G2215/00637 ,  G03G2215/00645 ,  G03G2215/0154 ,  G03G2215/0888 ,  G03G2221/0021

Abstract: A system for an electrophotographic image forming device includes a toner container having a reservoir for storing toner and an impact member configured to selectively impart an impulse force on the toner container to cause vibration of the toner container. A sensor is configured to sense the vibration of the toner container upon the impact member imparting the impulse force on the toner container. Processing circuitry in communication with the sensor is configured to determine an estimate of an amount of toner in the reservoir based on the sensed vibration of the toner container.