Printer Chip Contact Arrangement for Signal Interference Reduction
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Solution Overview
Problem
Inkjet printer chips experience signal interference between installation detection terminals and memory terminals due to close proximity, leading to erroneous data signals and impaired functionality.
Innovation Solution
The chip is designed with first and second contact portions arranged in distinct lines, with the second contact portions positioned between the first contact portions, reducing electromagnetic interference and ensuring proper signal transmission by maintaining voltage differences between terminal groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first terminals and second terminals are disposed excessively close to each other, then the chip can perform installation detection and signal transmission, but signal interference is caused between terminals leading to erroneous data signals
Solution Approach 1:
The terminal group is segmented into first terminals and second terminals that are disposed in different spatial locations. The first terminals are arranged in a first region while the second terminals are arranged in a second region, physically separating the installation detection function from the data signal transmission function to eliminate mutual interference.
Solution Approach 2:
Different regions of the chip are assigned different functional qualities: the first region is optimized for installation detection with first terminals, while the second region is optimized for data signal transmission with second terminals. This local differentiation ensures each terminal group operates without interference from the other.
2Ease of operation
If different voltages are input to first terminals and second terminals, then installation detection can be performed, but burr waves are generated causing terminals to mistake interference for data signals
Solution Approach 1:
The installation detection function is extracted and isolated from the data signal transmission function. By disposing first terminals in a first region and second terminals in a second region, the high voltage installation detection signals are separated from the low voltage data signals, preventing the generation of harmful burr waves that would interfere with data transmission.
3Adaptability or versatility
If the terminal group includes both first terminals for installation detection and second terminals for memory connection, then the chip can perform multiple functions, but the close arrangement causes mutual interference between terminal groups
Solution Approach 1:
The terminal group is segmented into functionally distinct first terminals and second terminals that are spatially separated. The first terminals handle installation detection while the second terminals handle memory communication, with each group disposed in its own region to prevent functional interference while maintaining multi-functionality.
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
This arrangement effectively minimizes burr waves and erroneous data signals, ensuring the chip operates normally and maintains accurate signal transmission.
Implementation Method 1
signal interference is caused between an installation detection signal on the first terminals and a signal on the second terminals... a high voltage of 42 V is input to the first terminals for installation detection and a low voltage of 3.3 V is input to the second terminals connected to the memory... the high voltage of 42 V at the first terminals may generate a burr wave on a neighboring terminal
Data Source
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AI summary
The present invention provides a chip and an ink cartridge. The chip is used for being installed on the ink cartridge, and the ink cartridge is used for being installed in an installation portion of a printer along an installation direction. The chip includes a memory, first contact portions used for installation detection, and second contact portions. At least one second contact portion is electrically connected to the memory. The first contact portions and the second contact portions are respectively in contact with a stylus in the printer. The first contact portions are arranged in a plurality of lines in the installation direction. In the installation direction, one or more lines formed by the second contact portions are disposed between the plurality of lines formed by the first contact portions, or the plurality of lines formed by the first contact portions are disposed between a plurality of lines formed by the second contact portions. Such a structure in which the first contact portions and the second contact portions are arranged in different lines helps reduce burr waves generated due to non-contact electromagnetic interference caused by a voltage difference between the first contact portions and the second contact portions, and free the terminals of an erroneous data signal, thereby ensuring that the chip works normally.