Printer Tape Winding Torque Control
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Solution Overview
Problem
Printers face issues with tape tension leading to displacement or sag in printed tape rolls due to excessive tension or insufficient tension, affecting roll quality.
Innovation Solution
A printer system with a controller that adjusts the drive torque of the core driving device based on tape width to maintain optimal tension, preventing excessive tension and ensuring correct roll formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the print-receiving tape width is relatively narrow, then the printed tape wound into a roll shape is in close contact with itself in a small area, but the printed tape is strongly tightened and subjected to an excessively large tension causing displacement in width direction
Solution Approach 1:
The patent applies parameter changes by adjusting the drive torque of the core driving device based on the tape width. For narrow tapes, the system reduces drive torque to prevent excessive tension, while for wide tapes, it increases drive torque to prevent insufficient tension. This dynamic parameter adjustment resolves the contradiction between contact area and tension force.
2Area of moving object
If the print-receiving tape width is relatively wide, then the printed tape wound into a roll shape is in close contact with itself in a large area, but the printed tape is subjected to an excessively small tension causing gap or sag in laminate structure
Solution Approach 1:
The patent applies parameter changes by adjusting the drive torque of the core driving device based on the tape width. For wide tapes, the system increases drive torque to ensure sufficient tension is applied during winding, preventing gap or sag in the laminate structure while maintaining large contact area.
3Device complexity
If a standard drive torque is used for all tape widths, then the feeding and taking up process is simple, but the tension becomes excessively large for narrow tapes and excessively small for wide tapes
Solution Approach 1:
The patent implements parameter changes by making the drive torque variable based on tape width rather than using a fixed standard torque. The controller adjusts the drive torque according to the specific tape width being processed, which prevents excessive tension for narrow tapes and insufficient tension for wide tapes, thereby ensuring consistent roll quality across different tape widths.
Solution Approach 2:
The patent applies dynamics by transitioning from a static, fixed drive torque system to a dynamic system where the drive torque automatically adjusts based on tape width. This dynamic adjustment ensures optimal tension control for each specific tape width while maintaining overall system simplicity through automated control.
Data Source
AI summary
The disclosure discloses a printer including a storage part, a feeding roller, a printing head, a core driving device, and a controller. The controller is configured to execute a feeding process, a printing process, a taking-up process, and a torque correction process. In the feeding process, the feeding roller is driven to feed the print-receiving tape fed out from the print-receiving tape roll. In the printing process the printing head is controlled to form a desired print, thereby a printed tape is formed. In the taking-up process, the core driving device is driven to sequentially take up the printed tape around an outer circumferential portion of a second core. In the torque correction process, a drive torque of the core driving device is corrected from a first drive torque to a second drive torque corresponding to a tape width of the print-receiving tape.