Booklet Adhesive Toner Heating to Prevent Cover Contamination
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Solution Overview
Problem
Adhesive toner adhered to a booklet making apparatus can contaminate the covers of the booklet, making recycling difficult and causing environmental issues.
Innovation Solution
A booklet making apparatus with a holding plate, pressurizing plate, and heater is used to apply pressure and heat to the adhesive toner, ensuring the storage elastic modulus of toner on sheets closest to the heater is higher than those farther away, reducing contamination by discharging the toner during the booklet formation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive toner is applied to sheets for booklet making, then the sheets can be thermocompression bonded together, but the adhesive toner adheres to the thermocompression adhesion portion and transfers to booklet covers causing contamination
Solution Approach 1:
The patent applies preliminary heating to the adhesive toner in the N-1th sheet bundle before it contacts the thermocompression adhesion portion. This pre-heating increases the storage elastic modulus of the toner, making it more rigid and less likely to transfer to the adhesion portion and booklet covers, thus preventing contamination before it occurs
Solution Approach 2:
The patent changes the temperature parameter of the adhesive toner by applying heat treatment to the N-1th sheet bundle. This temperature change modifies the physical properties of the toner, specifically increasing its storage elastic modulus, which prevents unwanted adhesion to the thermocompression portion while maintaining bonding capability
2Object-affected harmful factors
If heating is applied to increase storage elastic modulus of adhesive toner, then toner transfer is reduced, but additional heating steps increase process complexity
Solution Approach 1:
The patent makes the existing heater perform a dual function: it continues to heat sheets for thermocompression bonding while also selectively heating the N-1th sheet bundle to increase the storage elastic modulus of the adhesive toner. This eliminates the need for a separate heating device, reducing overall system complexity
Solution Approach 2:
The patent applies heating locally and selectively to specific sheet bundles (the N-1th bundle) rather than uniformly heating all sheets. This localized heating approach targets only the adhesive toner that needs modification, avoiding unnecessary heating of other components and simplifying the control mechanism
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
Effectively minimizes adhesive toner transfer to the booklet covers, enhancing recyclability and reducing contamination, while maintaining productivity.
Implementation Method 1
a heater configured to apply heat to the toner image formed by the adhesive toner in the adhesive region of each sheet contained in the sheet bundle held by the holding plate
Implementation Method 2
a pressurizing plate configured to apply pressure to the sheet bundle held by the holding plate
Data Source
AI summary
Provided is a heater that performs heat processing when a sheet bundle is stacked on a holding plate. A storage elastic modulus of a toner image by an adhesive toner formed on a sheet of interest closest to the heater in an N−1-th sheet bundle second closest to the heater in a booklet is greater than a storage elastic modulus of a toner image by the adhesive toner formed on any sheet included in another sheet bundle located farther from the heater than the N−1-th sheet bundle in the booklet.