Inkjet Printhead Cartridge Memory Verification
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Solution Overview
Problem
Conventional inkjet printing apparatuses face reliability issues due to ink composition differences, leading to clogging and printing failures when incompatible ink cartridges are used, causing customer dissatisfaction and system errors.
Innovation Solution
A printing apparatus with a non-volatile memory in the cartridge and printhead for identifying certified cartridges, which includes detection and recovery control mechanisms to prevent ink mixing and notify users of incompatible cartridges, ensuring high-reliability printing by discharging non-certified ink and prompting the exchange of certified cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plurality of types of inks are mixedly used in the same printing apparatus, then the versatility of the printing apparatus is improved, but ink coagulation and adhesion occur within the printhead
Solution Approach 1:
The system performs preliminary detection of ink cartridge compatibility through memory element verification before printing operations begin. This preliminary action prevents incompatible inks from entering the printhead, thereby avoiding coagulation and adhesion issues while maintaining the ability to use multiple ink types.
Solution Approach 2:
The printing apparatus incorporates feedback mechanisms that detect the type of ink cartridge mounted and provide real-time information to the control system. This feedback enables the system to adjust operations or alert users about incompatible cartridges, preventing reliability issues while allowing versatile ink usage.
2Adaptability or versatility
If ink cartridges incompatible in shape are introduced to many printer models, then the adaptability of ink cartridges to different printer models is improved, but customer confusion and selection difficulty increase
Solution Approach 1:
The ink cartridge incorporates a memory element that automatically provides identification information to the printing apparatus. This self-service mechanism eliminates the need for customers to manually verify compatibility, as the system itself performs the verification, thereby maintaining adaptability while improving ease of operation.
Solution Approach 2:
The patent replaces mechanical compatibility verification (physical shape matching) with an information-based verification system using memory elements and electrical contacts. This substitution maintains physical adaptability while adding intelligent verification that prevents customer confusion and ensures correct cartridge selection.
3Measurement precision
If a memory element is incorporated in the ink cartridge to store information on ink type and remaining ink amount, then the measurement precision of ink status is improved, but the device complexity of the ink cartridge increases
Solution Approach 1:
The memory element serves multiple functions simultaneously: storing ink type identification information, tracking remaining ink amount, and recording cartridge installation history. This multi-functionality achieves high measurement precision of ink status while minimizing the increase in device complexity by consolidating multiple information storage needs into a single component.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents ink mixing and clogging, maintaining printhead and printing apparatus integrity by ensuring only certified ink is used, thereby enhancing printing reliability and user experience.
Implementation Method 1
a printhead having a printing element with an orifice and an electrothermal transducer which generates discharge energy for discharging ink from the orifice
Data Source
AI summary
This invention relates to a printing apparatus, printhead, and cartridge type discrimination method capable of achieving high-reliability, high-quality printing by effectively utilizing a memory element incorporated in the printing apparatus and dealing with an error by all the building components of the printing apparatus. According to this invention, in a printing apparatus which prints on a printing medium with an ink cartridge and inkjet printhead mounted on a carriage, mounting of the ink cartridge on the carriage is detected, identification information is read from the non-volatile memory of the ink cartridge, and it is discriminated on the basis of the identification information whether or not the mounted cartridge is a certified one for the printing apparatus.