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Injection-Molded Physical Unclonable Function

a technology of injection molding and functional parts, applied in the field of physical unclonable functions, can solve the problems of counterfeit printer supplies, such as toner bottles, affecting the performance of counterfeit supplies,

Inactive Publication Date: 2019-05-16
LEXMARK INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The injection-molded PUFs provide a robust and cost-effective authentication method that is challenging to counterfeit, ensuring the authenticity of printer supplies by utilizing a unique, randomly distributed magnetic signature that is difficult to reproduce.

Problems solved by technology

Counterfeit printer supplies, such as toner bottles, are a problem for consumers.
Counterfeit supplies may perform poorly and may damage printers.
Ideally, a PUF cannot be identically replicated and thus is difficult to counterfeit.

Method used

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Examples

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Embodiment Construction

[0015]In the following description, reference is made to the accompanying drawings where like numerals represent like elements. The embodiments are described in sufficient detail to enable those skilled in the art to practice the present disclosure. It is to be understood that other embodiments may be utilized and that process, electrical, and mechanical changes, etc., may be made without departing from the scope of the present disclosure. Examples merely typify possible variations. Portions and features of some embodiments may be included in or substituted for those of others. The following description, therefore, is not to be taken in a limiting sense and the scope of the present disclosure is defined only by the appended claims and their equivalents.

[0016]Referring to the drawings and particularly to FIG. 1, there is shown a block diagram depiction of an imaging system 50 according to one example embodiment. Imaging system 50 includes an image forming device 100 and a computer 60...

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Abstract

A method of manufacturing a physical unclonable function is disclosed. A highly random distribution of magnetic particles within a thermoplastic polymer is created by magnetizing magnetizable particles in solid pellet feed material before feeding the solid pellets into an injection molding machine. Other devices and processes are disclosed.

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]This application claims priority and benefit as a continuation application of U.S. patent application Ser. No. 15 / 192,139, titled “Injection-Molded Physical Unclonable Function,” having a filing date of Jun. 24, 2016, which is a continuation-in-part of U.S. patent application Ser. No. 14 / 879,199, titled “Physical Unclonable Functions Having Magnetic and Non-Magnetic Particles,” filed Oct. 9, 2015 that issued as U.S. Pat. No. 9,553,582 on Jan. 24, 2017.BACKGROUND1. Field of the Disclosure[0002]The present disclosure relates generally to anti-counterfeit systems and more particularly to physical unclonable functions.2. Description of the Related Art[0003]Counterfeit printer supplies, such as toner bottles, are a problem for consumers. Counterfeit supplies may perform poorly and may damage printers. Printer manufacturers use authentication systems to deter counterfeiters. Physical unclonable functions (PUF) are a type of authentication syst...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B29C45/00B29B13/08B29C45/18B29B13/02G09C1/00H03K19/003H04L9/32
CPCB29C45/0001B29B13/08B29C45/18B29B13/02G09C1/00H03K19/003H04L9/3278B29K2105/16B29K2505/12B29L2031/34B29K2101/10G06V20/80
Inventor DENTON, GARY ALLENDRUMMOND, JAMES PAULKILLEEN, KELLY ANN
Owner LEXMARK INT INC