Arched Inkjet Printer Duplex Web Path
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Solution Overview
Problem
Inkjet web presses with a vertical stack configuration face challenges in minimizing footprint while maintaining accessibility for servicing and web control, particularly in duplex printing applications.
Innovation Solution
The design incorporates an arched printing station with duplex web printing path and interstitial drying, where print bars are arranged in an arc, allowing for simultaneous drying of both sides of the web within a compact footprint, eliminating the need for web inversion and enhancing service accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a vertical stack configuration is used to minimize footprint, then the floor space occupied by the press is reduced, but accessibility for servicing each printing unit becomes difficult
Solution Approach 1:
The patent transitions from a vertical stacking arrangement to a horizontal linear arrangement of printing units, effectively changing the spatial dimension in which the press occupies space. This dimensional shift allows printing units to be accessed from the side rather than requiring vertical disassembly, thereby maintaining compact footprint while dramatically improving service accessibility.
2Area of stationary object
If a vertical stack configuration is used to minimize footprint, then the floor space occupied by the press is reduced, but web control in the printing zone becomes more difficult
Solution Approach 1:
By arranging printing units horizontally in a linear sequence rather than vertically stacked, the patent creates more accessible space around the web path. This dimensional reconfiguration allows for better web guidance and control mechanisms to be positioned along the horizontal axis, improving web stability and control in the printing zone while maintaining a compact overall footprint.
3Ease of repair
If printing units are arranged horizontally in a line, then accessibility for servicing is improved, but the footprint of the press increases
Solution Approach 1:
The patent combines multiple printing units into a shared horizontal framework with common support structures, web path elements, and control systems. This merging approach allows the printing units to be arranged horizontally for improved accessibility while sharing infrastructure that minimizes the overall footprint, effectively distributing space requirements across multiple functional components.
4Ease of operation
If printing units are arranged horizontally in a line, then web control in the printing zone is improved, but the footprint of the press increases
Solution Approach 1:
The patent integrates multiple printing units into a unified horizontal system where web guidance, tension control, and registration mechanisms are shared across all units. This merging of control functions along the horizontal axis improves web control precision while minimizing the footprint by eliminating redundant control components that would be required in separate vertical stacks.
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
This configuration achieves a smaller footprint, improves web control and accessibility for maintenance, and enables high-quality duplex printing with interstitial drying, reducing the risk of web damage and misalignment.
Implementation Method 1
a dryer positioned under and contained within the footprint of the arched printing unit
Data Source
AI summary
In one embodiment, an inkjet printer includes: a first series of print bars arranged along an arc on a first side of an arched printing unit and a second series of print bars arranged along an arc on a second side of the arched printing unit and a dryer positioned within a footprint of the arched printing unit. A plurality of web guides are arranged to guide the web along a duplex printing path past the first print bars for printing on a first side of the web, then through the dryer for drying the first side of the web, then past the second print bars for printing on a second side of the web, and then through the dryer for drying the second side of the web.