Fluid ejection cartridge including secure renewal status memory cell
The integration of a renewal status memory cell with passcode authentication in fluid ejection devices secures authorized refilling and prevents unauthorized access, ensuring the integrity and functionality of refillable cartridges.
WO2026095930A1PCT designated stage Publication Date: 2026-05-07HEWLETT PACKARD DEVELOPMENT COMPANY LP
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HEWLETT PACKARD DEVELOPMENT COMPANY LP
- Filing Date
- 2024-10-30
- Publication Date
- 2026-05-07
Smart Images
Figure US2024053634_07052026_PF_FP_ABST
Abstract
An integrated circuit associated with a print component can include an authentication circuit including passcode authentication logic and a read and write circuit to receive a memory access protocol, the memory access protocol including an indication of an authentication mode, receive a passcode, and in response to the indication of the authentication mode, provide the received passcode to the passcode authentication logic, the passcode authentication logic to determine whether or not the received passcode is correct.
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Citation Information
Patent Citations
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