Bookbinding Connection Piece Inserted Into Sheet Cut
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Solution Overview
Problem
Existing bookbinding methods result in visual discomfort due to tape overlap with print images, disrupting the continuity and unity of facing pages when opened.
Innovation Solution
A method involving a sheet with a slit-shaped cut on the binding-side surface, where a connection piece with adhesive properties is inserted, and spacers are used to create a flexible hinge, allowing pages to open flat without tape visibility, maintaining a uniform surface and enhancing visual continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tape is used to connect binding margin portions, then the bookbinding article can open flat with facing pages, but the tape is visually recognized to overlap with the print image causing visual discomfort
Solution Approach 1:
The harmful visual element (tape) is extracted from the visible surface area by inserting it into a slit-shaped cut. The connection piece is placed inside the cut rather than on the surface, removing its visual presence while preserving its functional role as a flexible hinge that enables flat opening of facing pages.
Solution Approach 2:
The connection piece is nested within the slit-shaped cut of the sheet. This nesting arrangement allows the connection piece to be housed inside the sheet structure rather than protruding on the surface, eliminating visual overlap with print images while maintaining the mechanical function of enabling flat page opening.
2Strength
If a tape forms the binding margin portion, then both portions can be connected, but the continuity of photograph or illustration over two facing pages is disrupted
Solution Approach 1:
The connection piece is extracted from the visible surface and placed inside the slit-shaped cut. This extraction ensures that the connection function is maintained while the visual continuity of photographs or illustrations spanning two facing pages is preserved, as the connection piece no longer appears on the surface to interrupt the image flow.
3Strength
If the tape is placed on the binding-side sheet surface, then both portions can be connected, but the surface property difference between print image and tape creates visual discomfort
Solution Approach 1:
The connection piece is nested within the slit-shaped cut, placing it inside the sheet structure rather than on the surface. This nesting eliminates the surface property difference issue by removing the connection piece from the visible surface where it would create visual discomfort due to contrasting material properties with the print image.
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
The solution ensures that the tape does not overlap with the print image, providing a uniform surface and improved visual continuity and unity of facing pages, eliminating visual discomfort.
Implementation Method 1
a connection piece (4), having adhesive properties on both surfaces of the connection piece (4), other than a portion inserted into the cut (5)
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
To prevent a tape from visually recognized to overlap with a print image. A method for processing sheet that processes a sheet for bookbinding includes forming a cut (5) that divides a thickness of a sheet (S) in a binding-side side surface (6) of the sheet (S), inserting, into the cut (5), a portion of a connection piece (4) that is attached to the sheet (S), and functions as a hinge in a book-bound state, and joining the inserted portion of the connection piece (4) inserted into the cut (5) to the sheet (S).