Liquid Jet Head Data Discriminant Section for Print Quality
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Solution Overview
Problem
Inkjet recording devices face print quality issues due to signal transmission errors between the controller and the head driver, particularly when the cable length increases, leading to errors in print data transmission and resulting in voids or deterioration of print quality.
Innovation Solution
A liquid jet head with a receiving section to receive print data, a discriminant section to check for data defects, and a control section to hold non-defective data for printing, eliminating the need for upstream high-speed signal lines for response and retry signals by performing error checks and handling on the liquid jet head itself.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cable length between the controller and the head driver is increased, then the adaptability of the recording device is improved, but the transmission reliability of the recording signal deteriorates due to external noise and waveform deterioration
Solution Approach 1:
The head driver performs preliminary error detection on the recording signal before processing, using an error detection code attached to the signal. This allows the system to identify transmission errors early and request retries before the error propagates through the system, thereby maintaining reliability even with longer cables.
Solution Approach 2:
The system implements a feedback mechanism where the head driver detects errors in the recording signal and sends a retry signal back to the controller. The controller then retransmits the affected data, creating a closed-loop system that corrects transmission errors and maintains reliable operation over extended cable lengths.
2Reliability
If the number of wiring lines and connectors is increased to improve transmission reliability, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The head driver performs self-service error detection and validation on the received recording signal using error detection codes. This eliminates the need for additional dedicated reliability-checking hardware or multiple verification wiring lines, as the system validates its own input data through software-based error detection algorithms.
3Manufacturing precision
If error detection and handling is performed on the liquid jet head side, then the print quality is improved and the need for high-speed signal lines is reduced, but the processing complexity on the head side increases
Solution Approach 1:
The liquid jet head performs preliminary validation of print data using error detection codes before processing the data for printing. This preliminary check ensures data integrity early in the processing chain, preventing defective data from reaching the printing mechanism and compromising print quality, while the complexity added is minimal compared to the benefit of error prevention.
Data Source
AI summary
An object of the invention is to provide a liquid jet head and a liquid jet device each capable of improving the print quality even in the case in which an error occurs in the print data. The liquid jet head includes a receiving section adapted to receive print data, a discriminant section adapted to discriminate whether or not the print data received is non-defective, and a control section adapted to hold the print data in a case in which the print data is non-defective, or perform printing based on the print data held currently without holding the print data received in a case in which the print data received is defective.