Liquid Applier Position Control for Consistent Stapleless Binding
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Solution Overview
Problem
Existing medium processing apparatuses face challenges in maintaining consistent liquid application for stapleless binding, particularly when dealing with varying numbers or types of sheets, which affects binding strength.
Innovation Solution
A medium processing apparatus equipped with a liquid applier and a postprocessor that adjusts the position and amount of liquid application to ensure consistency, using a liquid application member to apply liquid to the medium and a postprocessor to execute post-processing, such as crimp binding, to enhance binding strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If liquid application is performed on sheet bundles with varying numbers or types of sheets, then binding strength can be improved, but the amount of liquid applied becomes inconsistent
Solution Approach 1:
The liquid application member is designed to be movable in the sheet thickness direction, allowing dynamic adjustment of the application position based on the actual sheet bundle thickness. This enables consistent liquid application regardless of variations in sheet number or type, resolving the contradiction between improving binding strength and maintaining liquid application consistency.
Solution Approach 2:
A detection device monitors the position of the liquid application member, providing feedback to the control device. The control device then adjusts the position to maintain optimal contact between the liquid application member and the sheet bundle surface, ensuring consistent liquid application across varying sheet configurations.
2Strength
If the liquid application member is pressed against the sheet bundle to ensure adequate liquid transfer, then binding strength improves, but the liquid application amount varies with sheet bundle thickness
Solution Approach 1:
The liquid application member's position is dynamically adjusted based on detected sheet bundle thickness. By maintaining optimal contact pressure through position adjustment rather than constant high pressure, the system ensures adequate liquid transfer while preventing excessive liquid application on thinner bundles, thus maintaining consistent liquid amounts while achieving reliable binding strength.
Solution Approach 2:
The system changes the positional parameter of the liquid application member based on sheet bundle characteristics. This parameter adjustment ensures that the liquid application amount remains consistent across different sheet bundle thicknesses, resolving the contradiction between achieving adequate liquid transfer for binding strength and controlling the actual liquid quantity applied.
Data Source
AI summary
A medium processing apparatus includes a liquid applier including a liquid application member to apply liquid to a medium through the liquid application member, and a postprocessor to execute post-processing on a medium bundle including the medium to which the liquid is applied. In the medium processing apparatus, the liquid applier moves the liquid application member to contact the medium and apply the liquid to the medium, and adjusts a position of the liquid application member on the medium to make an amount of the liquid applied from the liquid application member to the medium constant before and after the liquid application member is worn.