Retrofit Coating Apparatus for Ink Bleeding Prevention
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Solution Overview
Problem
Existing image forming systems face challenges in preventing ink bleeding on recording media, and there is a need for a cost-effective solution to retrofit existing systems with a coating apparatus to enhance image quality without requiring a complete system replacement.
Innovation Solution
A coating apparatus that can be connected to both image forming apparatuses and sheet feeders, featuring a coater, carry-in entrance, and ejector, allowing for the application of a treatment liquid to recording media, with interleaf conveyance control and reverse conveying paths to ensure efficient ink management and image formation without increasing economic burdens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a coating apparatus is added to an existing image forming system to prevent ink bleeding, then image quality is improved, but system complexity and cost increase
Solution Approach 1:
The coating apparatus is designed with a dual-sided exterior wall structure where one side interfaces with the sheet feeder and the other side interfaces with the image forming apparatus. This universal design allows the same apparatus to serve multiple functions in different system configurations, enabling retrofitting without requiring separate dedicated components for each interface.
Solution Approach 2:
The coating apparatus is divided into functionally independent modules: the coater unit for applying treatment liquid, the carry-in entrance for receiving recording media from the sheet feeder, and the ejector for delivering to the image forming apparatus. This segmentation allows selective installation and configuration based on specific system requirements, reducing overall system complexity.
2Object-affected harmful factors
If a coating apparatus is retrofitted into an existing system, then ink bleeding is reduced, but installation complexity increases
Solution Approach 1:
The coating apparatus features standardized dual-sided exterior walls that can interface with both sheet feeders and image forming apparatuses using common connection protocols and mechanical interfaces. This universality enables straightforward retrofitting into existing systems without requiring custom integration work, thereby reducing installation complexity while maintaining the benefit of ink bleeding prevention.
3Adaptability or versatility
If the carry-in entrance and ejector are positioned on opposite exterior wall surfaces, then connectivity to both sheet feeder and image forming apparatus is enabled, but alignment precision becomes difficult to maintain
Solution Approach 1:
The exterior walls of the coating apparatus are designed as parallel surfaces at equal distances from the central coating axis. This equipotential geometric arrangement ensures that the carry-in entrance on one wall and the ejector on the opposite wall maintain consistent alignment relationships, making it easier to preserve alignment precision while achieving connectivity to both external devices.
Data Source
AI summary
A coating apparatus is connectable to both an image forming apparatus and a sheet feeder. The coating apparatus includes a coater, a carry-in entrance, and an ejector. The coater coats a recording medium with a treatment liquid. The carry-in entrance is on one of two exterior wall surfaces facing each other. The recording medium is conveyed from the sheet feeder through the carry-in entrance. The ejector is on another of the two exterior wall surfaces. The ejector ejects the recording medium to the image forming apparatus. A position of the carry-in entrance on the one of the exterior wall surfaces matches a position of the ejector on said another of the exterior wall surfaces.