Printer Capping Unit Belt Element Self-Stability Mechanism
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Solution Overview
Problem
Existing capping units for printheads in printers are complex and voluminous, making them difficult to construct and maintain effectively.
Innovation Solution
A capping unit featuring a belt element with a self-stability section that allows for bending in a movement plane, providing stability against bending in the capping setting while enabling flexible positioning for capping and decapping of printheads, and can be easily displaced between resting and capping settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional maintenance systems with tracks and shafts are used, then capping functionality is achieved, but device complexity and volume increase
Solution Approach 1:
The patent extracts the essential capping functionality from the complex track-shaft maintenance system and implements it through a simplified belt element with integrated caps. The belt element can be independently displaced to bring caps into contact with printheads, eliminating the need for elaborate guiding tracks and shafts while maintaining reliable capping operation.
Solution Approach 2:
The belt element functions as a flexible carrier that can be easily displaced and positioned. Its flexible nature allows it to navigate compact spaces and achieve the capping position without requiring rigid structural supports like traditional tracks and shafts, thereby reducing device complexity and volume.
2Reliability
If traditional maintenance systems with tracks and shafts are used, then capping functionality is achieved, but device volume increases
Solution Approach 1:
The patent removes the voluminous track and shaft structures from the system, retaining only the essential capping function through a compact belt element mechanism. This extraction dramatically reduces the space required for the maintenance system while preserving its functional reliability.
Solution Approach 2:
The belt element operates in a simplified one-dimensional displacement path compared to the multi-dimensional track systems. By constraining movement to a single degree of freedom, the system achieves compact volume while maintaining effective capping capability through linear displacement of the belt element.
3Stability of the object's composition
If self-stability section is added to belt element, then stability against bending is provided, but belt element complexity increases
Solution Approach 1:
The self-stability section is implemented as a localized feature on the belt element rather than a throughout structural complexity. This section provides targeted anti-bending stability only where needed during capping operation, while the rest of the belt element remains simple and flexible for easy displacement.
Solution Approach 2:
The belt element exhibits dynamic characteristics - it is flexible and easily displaceable during movement, but becomes stable against bending when in the capping position. The self-stability section enables this dynamic transition, providing rigidity only when required for maintaining cap position while allowing flexibility during motion.
Data Source
Figure 1a
Figure 1b
Figure 2a~2b
AI summary
The invention relates to a capping unit (1) for capping at least one printhead (311.1, 311.2, 311.3, 321.1, 321.2, 321.3) of a printer (300), in particular an inkjet printer. The capping unit (1) includes a belt element (2.1, 2.2) having an elongated extent, wherein the belt element (2.1, 2.2) includes at least one flexible cap (3.1, 3.2) for capping the at least one printhead (311.1, 311.2, 311.3, 321.1, 321.2, 321.3), wherein the belt element (2.1, 2.2) features a resting setting and a capping setting and is displaceable from the resting setting to the capping setting and back. The belt element (2.1, 2.2) provides a self-stability section (5.1, 5.2) extending over at least a portion of the belt element (2.1, 2.2)'s elongated extent, wherein in the self-stability section (5.1, 5.2), the belt element (2.1, 2.2) is bendable in a movement plane (13.1, 13.2). In the capping setting, at all positions within the self-stability section (5.1, 5.2), a course of the elongated extent follows a straight line (14.1, 14.2) in the movement plane (13.1 13.2). Furthermore, in the capping setting, at each position within the self-stability section (5.1, 5.2), the belt element (2.1, 2.2) provides a self-stability against bending of the belt element (2.1, 2.2) in a self-stability direction being oriented perpendicular to the straight line (14.1, 14.2) and being aligned in the movement plane (13.1, 13.2). At at least one position within the self-stability section (5.1, 5.2), the belt element (2.1, 2.2) is bendable in the movement plane (13.1, 13.2) away from the straight line (14.1, 14.2) in a bending direction being oriented opposite to the self-stability direction.