Printing Cartridge Mounting Detection Circuit
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Solution Overview
Problem
Existing printing material cartridge mounting detection techniques face issues such as bit errors due to hot-plugging stress and require complex wiring arrangements, making user convenience and accurate detection challenging.
Innovation Solution
A printing material cartridge with a mounting detection circuit that uses a detection current to determine the mounting state, eliminating the need for conductive states during cartridge exchange and simplifying wiring by connecting terminals in parallel, allowing for reliable and user-friendly mounting detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mounting detection is performed during ink cartridge exchange operation, then user convenience is improved, but bit errors occur due to hot-plugging stress on storage device
Solution Approach 1:
The patent separates the mounting detection function from the storage device by providing a dedicated detection circuit with detection wiring that is independent of the storage device connections. This segmentation allows the storage device to remain non-conductive during exchange while the detection circuit independently monitors cartridge presence, resolving the contradiction between user convenience and storage device reliability.
Solution Approach 2:
The patent introduces an intermediary detection circuit that mediates between the cartridge mounting state and the control system. This intermediary uses separate detection wiring to sense cartridge presence without requiring the storage device to be conductive, thus preventing hot-plugging stress while enabling continuous mounting detection for user convenience.
2Measurement precision
If individual mounting detection wiring is arranged between each cartridge and detection circuit, then accurate individual cartridge detection is achieved, but device complexity increases
Solution Approach 1:
The patent combines the detection wiring for multiple cartridges into a shared detection circuit architecture. The detection circuit uses common wiring paths that can simultaneously monitor multiple cartridge mounting states, reducing the overall wiring complexity while maintaining the ability to detect individual cartridge presence accurately through the combined detection signals.
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 ensures accurate and stress-free mounting detection without bit errors, enhancing user convenience and simplifying the cartridge detection process by using a detection current that varies based on the number of cartridges mounted.
Implementation Method 1
a mounting detection circuit having a mounting current value detection section that detects a detection current that flows when at least one printing material cartridge among a cartridge set configured of N (N is integer of 2 or more) printing material cartridges is mounted in the holder of a printing apparatus
Data Source
AI summary
A printing apparatus includes a holder in which a cartridge set that is configured of N printing material cartridges is mounted and a mounting detection circuit for detecting a mounting state of the printing material cartridge inside the holder. Each of N printing material cartridges has a storage device for storing information regarding the contained printing material, an electric device for the mounting detection, storage device terminals and the electric device terminals. The electric device for N printing material cartridges is configured such that the detection current is predetermined threshold value current or more when N printing material cartridges are all mounted inside the holder.