Printing Apparatus Image Data Deletion for Staple-less Binding
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Solution Overview
Problem
Existing staple-less binding methods for printed documents, such as press-binding and adhesive binding, face issues with decreased binding force when toner is present at the binding area, leading to an unsatisfactory finish and potential discomfort for users.
Innovation Solution
A printing apparatus is equipped with a binding unit that performs staple-less binding, a specifying unit to identify areas for binding within the image data, a deleting unit to remove image data from these areas, and a printing unit to ensure the image is not printed at the binding locations, thereby maintaining binding force and user satisfaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If staple-less binding methods (press-binding or adhesive binding) are used, then environmental friendliness and simplicity are improved, but binding force decreases when toner is present at the binding area
Solution Approach 1:
The system performs preliminary action by deleting image data in the binding area before printing. The control unit identifies the binding area on the sheet and removes the corresponding image data from the image data before printing, preventing toner from being applied to the binding area in the first place. This resolves the contradiction by proactively preventing the harmful effect (toner infiltration) rather than attempting to fix it afterward.
Solution Approach 2:
The invention extracts the problematic element (image data corresponding to the binding area) from the overall image data. By deleting the image data in the binding area before printing, the toner that would normally infiltrate the binding area during press-binding is prevented from being deposited. This extraction of the harmful element resolves the contradiction between binding simplicity and binding force.
2Manufacturing precision
If image data is not deleted at the binding area, then complete image printing is maintained, but toner infiltration occurs during press-binding reducing binding force
Solution Approach 1:
The invention applies local quality by treating the binding area differently from the rest of the sheet. The control unit identifies the specific binding area coordinates and deletes image data only in that local region while preserving image data elsewhere on the sheet. This localized modification ensures complete image printing except where it would harm binding, thus resolving the contradiction between printing completeness and binding reliability.
3Ease of manufacture
If adhesive binding is used instead of press-binding, then binding process is simplified, but toner mixed with paste decreases adhesive force
Solution Approach 1:
The system performs preliminary action by deleting image data in the binding area before printing. This prevents toner from being applied to the binding area in the first place, so when adhesive binding is performed, there is no toner to mix with the paste. This resolves the contradiction by proactively preventing the harmful effect (toner-paste mixing) rather than attempting to fix it afterward.
Solution Approach 2:
The invention extracts the problematic element (image data corresponding to the binding area) from the overall image data. By deleting the image data in the binding area before printing, the toner that would normally mix with the adhesive paste during binding is prevented from being deposited. This extraction of the harmful element resolves the contradiction between binding simplicity and adhesive force.
Data Source
AI summary
Even when a binding process for binding a plurality of sheets without using a staple is performed after performing printing on both faces of the sheets, the binding process can be performed so that the bound sheets are not easily separated. A control method for controlling a printing apparatus, comprises: performing a binding process for binding, without using a staple, a sheet on which an image is printed based on image data; specifying an area where the binding process is to be performed, the area being included in the image data; deleting image data of the specified area; and printing the image on the sheet based on the image data on which deleting is performed.