The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2018
Filed:
Feb. 08, 2016
Dover Europe Sàrl, Vernier, CH;
Damien Bonneton, Hostun, FR;
DOVER EUROPE SÀRL, Vernier, CH;
Abstract
A method of authenticating a consumable or detachable element of a continuous inkjet printer, (CIJ), comprising: the controller of the printer generating and dispatching a 1item of random information to an authentication circuit of the element; encrypting the 1item of random information by the authentication circuit using a 1encryption algorithm and a 1secret key to form a 1item of encrypted random information; dispatching the 1item of encrypted random information to the controller; encrypting the 1item of random information by the controller using a 2encryption algorithm and a 2secret key to form a 2item of encrypted random information; and comparing the 1item of encrypted random information with the 2encrypted item of random information. If the consumable element is authenticated, a shared key part of a 3key is dispatched by the consumable or detachable element to the CIJ.