Borderless Poster Printing via Overlapping Gluing Regions
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Solution Overview
Problem
Conventional printers require users to trim white spaces from peripheral edges of printed sheets when creating large posters without a borderless print function, making the poster printing process cumbersome.
Innovation Solution
A printing device and method that sets overlapping printing regions on sheets, with each region assigned a gluing and projecting area, allowing for borderless printing by extending images beyond the sheet edges, eliminating the need for manual trimming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional printing is used without borderless print function, then printing can be performed on standard sheets, but white spaces are left along peripheral edges requiring manual trimming
Solution Approach 1:
The poster printing process is segmented into multiple sheets that are printed separately and then assembled. Each sheet contains specific portions of the image with designated overlapping regions. This segmentation allows the printing system to handle large images that exceed single sheet dimensions while eliminating the need for trimming by incorporating gluing and projecting regions in the design phase.
Solution Approach 2:
The printing system performs preliminary actions by pre-calculating and pre-positioning gluing regions and projecting regions on each sheet before printing. The overlap areas are predetermined in the print data generation stage, so that when sheets are assembled, they automatically align without requiring manual trimming. This preliminary arrangement of regions eliminates post-printing trimming operations.
2Length of stationary object
If multiple sheets are assembled to form large posters, then poster size can be extended beyond single sheet limits, but alignment precision and assembly complexity increase
Solution Approach 1:
Different regions of each sheet are assigned different functions: image regions contain the actual poster content, gluing regions are designated for adhesive application, and projecting regions extend beyond sheet edges to overlap with adjacent sheets. This local differentiation of regions ensures that each area serves its specific purpose, with alignment markers and overlap areas positioned precisely to guarantee accurate assembly without compromising overall alignment precision.
Solution Approach 2:
The projecting regions serve as intermediaries between adjacent sheets. These regions extend beyond the sheet edges and contain alignment information that mediates the joining process. By incorporating these intermediary overlapping areas with predetermined positioning, the system ensures precise alignment during assembly without requiring high precision manual trimming or positioning operations.
3Stability of the object's composition
If image regions overlap between adjacent sheets, then seamless assembly is achieved, but print data complexity and processing requirements increase
Solution Approach 1:
The system changes parameters by dividing the original image into multiple image regions and assigning specific coordinates and dimensions to each region. Overlap areas are defined with specific width parameters, and gluing regions are positioned with defined margins. These parameter changes transform the complex task of seamless assembly into a structured process where each sheet's print data contains explicit regional definitions, simplifying the overall processing while ensuring seamless results.
Data Source
AI summary
In the printing device, the image in the print data indicates a part of the original image. The printing unit prints a print image in the printing region on the recording sheets. Each printing region is assigned with at least one of a gluing region and a projecting region. The projecting region is a part of the printing region. The gluing region is on the recording sheet. One of two printing regions corresponding to two image regions partially overlaps with each other is assigned with the gluing region. The remaining printing region is assigned with the projecting region. An image corresponding to the projecting region corresponds to a part of image corresponding to the one of the two printing regions. The printing unit performs borderless printing with the image corresponding to the projecting region running off the recording sheet.