Perforated Line Visibility in Printed Pages via Pictograms
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Solution Overview
Problem
Fine perforated lines in printed products are difficult for readers to detect, making it challenging to separate perforated sections from the rest of the page.
Innovation Solution
A longitudinal perforation device is used to create a visible perforated line on a printed page by applying a pictogram on both sides of the line, which aids in detection and separation, and can be easily integrated into web-fed rotary printing presses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fine perforated line is used to separate printed columns, then the separation function is achieved, but the visibility of the perforated line becomes difficult for readers to detect
Solution Approach 1:
The patent applies pictograms with contrasting colors or visual patterns along the perforated line to enhance its visibility. The pictogram is printed in a color that contrasts with the surrounding text and background, making the perforation line easily detectable by readers while maintaining the fine precision of the actual perforations for clean separation.
Solution Approach 2:
The patent introduces an intermediary element (the pictogram) that serves as a visual mediator between the fine perforated line and the reader's detection capability. The pictogram acts as a guide that draws attention to the location of the perforated line without interfering with the separation function, allowing readers to easily locate where to tear or fold the page.
2Difficulty of detecting and measuring
If a pictogram is added to enhance perforation line visibility, then the detection ease is improved, but the device complexity increases
Solution Approach 1:
The patent merges the pictogram printing with the existing printing process by integrating the pictogram into the same printing plate or printing form as the surrounding text and images. This allows the pictogram to be applied simultaneously with the main content during a single printing pass, avoiding additional printing steps and equipment complexity.
Solution Approach 2:
The patent designs the printing plate to serve multiple functions: it prints both the main content (text and images) and the pictogram along the perforated line simultaneously. This multi-functionality eliminates the need for separate printing operations, maintaining process simplicity while achieving enhanced perforation line visibility.
Data Source
AI summary
A page of a printed product having a plurality of information fields arranged in different printed columns is provided. At least one perforated line, extending parallel to the height of the page, is generated in the page between at least two printed columns. The at least one perforated line is formed over the entire height of the page. At least one printed column, along with its at least one information field, can be completely separated from the remaining part of the page via a separation process to be performed along a single such perforated line. The perforated line to be used to execute the separation process extends through a pictogram that is situated along both sides of this perforated line. The pictogram visualizes the position of this perforated line. A longitudinal perforation device for a web-fed rotary printing press can be used to produce this page and has at least one perforating blade for generating the perforated line. The longitudinal perforation device is configured as an autonomous module. That module can be used in different places in the same web-fed rotary printing press or at different times in different web-fed rotary printing presses.