Print Head Shuttle Positioning on Web Substrate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing printing technologies face challenges in accurately positioning print substrates relative to print head shuttles, particularly in ensuring precise alignment and movement coordination during the printing process, which affects the quality and efficiency of printing on continuous materials.
Innovation Solution
A device and method where a print head shuttle with at least one print head is positioned on one side of the print substrate, and a print table with a holding device is positioned on the opposite side to prevent relative movement, allowing the print head shuttle to move transversely while the substrate is fed longitudinally, ensuring precise positioning and printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the print head shuttle moves transversely to print on continuous material, then printing capability is achieved, but positioning precision deteriorates due to coordination difficulties between substrate feed and shuttle movement
Solution Approach 1:
A printing table is introduced as an intermediary device between the continuous substrate and the print head shuttle. The printing table holds the substrate stationary during the printing process, acting as a mediator that decouples the substrate feed mechanism from the shuttle movement, thereby enabling precise positioning while maintaining continuous material processing capability
Solution Approach 2:
The printing process is segmented into distinct functional zones: a feed path for continuous substrate delivery, a printing area where the substrate is held stationary on the printing table, and a shuttle movement path for the print head. This segmentation allows independent optimization of each function - continuous feed for productivity and stationary holding for positioning precision
2Manufacturing precision
If individual sheets are fed one after another, then positioning precision is maintained, but productivity deteriorates due to sequential processing
Solution Approach 1:
The system dynamically adapts its operation mode based on the substrate type and printing requirements. It can switch between processing individual sheets with high positioning precision and continuous material feeding with high productivity, using the printing table to hold substrates stationary during printing while allowing continuous feed during transport
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a device and a method for printing on a printing substrate (1). A printhead shuttle (5) with at least one printhead (14a, 14b) applies a printing medium to a printing substrate (1) to produce a printed image. The printing substrate (1) is a web material (1) that can be displaced along a web path in a feed direction (4). The printhead shuttle (5) is arranged on a first side of the printing substrate (1), while a printing table (3) with a support surface (13) is arranged opposite the printhead shuttle (5) on a second side of the printing substrate (1). A holding device (11) is provided to hold the printing substrate (1) in such a way that relative movement between the printing table (3) and the printing substrate (1) is prevented during printing.The printhead shuttle (5) moves in and against a shuttle movement direction perpendicular to the feed direction (4) of the printing substrate (1) for printing, such that the feed movement of the printing substrate (1) in the feed direction (4) and the movement of the printhead shuttle (5) perpendicular to the feed direction (4) provide a positioning of the printhead shuttle (5) above the printing substrate (1) to generate the printed image on the printing substrate (1).