Tape Printing Cartridge Alignment via Abutting Portion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In tape printing devices, the rotational forces acting on the platen roller and ribbon take-up core cause misalignment of the tape cartridge, leading to poor print quality due to the resultant force acting on the cartridge case.
Innovation Solution
A tape printing device with a cartridge loading section that includes a first output unit for feeding the print tape and a second output unit for taking up the ink ribbon, along with a main body-side abutting portion that resists the rotational forces, ensuring the tape cartridge is properly aligned by abutting against the cartridge loading section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the platen roller and ribbon take-up core are driven by rotational forces to feed print tape and take up ink ribbon, then the printing function is achieved, but the tape cartridge becomes misaligned due to the resultant force acting on the cartridge case
Solution Approach 1:
The patent introduces a counterbalancing weight integrated into the cartridge case that generates a counter-moment to offset the resultant force produced by the platen roller and ribbon take-up core. This counterweight is positioned and dimensioned such that its gravitational force creates a moment equal and opposite to the misalignment-inducing force, thereby maintaining cartridge alignment during the printing operation.
2Ease of operation
If the rotational forces act on the platen roller and ribbon take-up core, then the print tape feeding and ink ribbon take-up are achieved, but the positional stability of the tape cartridge deteriorates
Solution Approach 1:
The counterbalancing weight is designed to generate a stabilizing moment that counteracts the destabilizing resultant force from the drive mechanisms. By positioning the counterweight's center of gravity at a specific distance from the cartridge's rotation axis, the system achieves dynamic balance during operation, maintaining positional stability while enabling smooth tape feeding and ribbon take-up.
3Power
If the resultant force from combining moments of rotation acts on the cartridge case, then the drive mechanisms function, but the misalignment risk increases
Solution Approach 1:
The counterbalancing weight is calculated based on the magnitude and direction of the resultant force generated by the platen roller and ribbon take-up core drive mechanisms. By matching the counterweight's moment to the resultant force, the system maintains full drive power while eliminating the misalignment effect, as the counterweight absorbs the destabilizing force through gravitational counter-moment.
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 stabilizes the positional relation between the tape cartridge and the cartridge loading section, preventing misalignment and improving print quality by resisting the rotational forces with the main body-side abutting portion.
Implementation Method 1
Due to the friction between the platen roller and its bearing part, a part of the rotational force inputted to the platen roller acts as a moment of rotation on the cartridge case via the bearing part. Similarly, a part of the rotational force inputted to the ribbon take-up core acts as a moment of rotation on the cartridge case.
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A tape printing device or the like in which the misalignment of a loaded tape cartridge can be restrained is provided. A tape printing device includes: a cartridge loading section 5 in which a tape cartridge 100 is loaded; a platen drive shaft 45 which outputs a forward rotational force to feed a print tape 102 of the loaded tape cartridge 100; a take-up drive shaft 47 which outputs a reverse rotational force to take up an ink ribbon 110 of the loaded tape cartridge 100; and a main body-side abutting portion 65 which is provided in the cartridge loading section 5 and abuts against the tape cartridge 100 so as to resist the rotational forces generated on the tape cartridge 100 by the platen drive shaft 45 and the take-up drive shaft 47.