Movable Heating Pressing Roller Prevents Textile Heating Marks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ink jet printing apparatuses for textiles often leave heating marks on fabrics due to a stationary pressing mechanism, damaging the medium's appearance when transport is stopped.
Innovation Solution
A movable heating and pressing portion along the transport direction, controlled by a unit that adjusts temperature and speed based on the medium type and print mode, ensures consistent contact and prevents heating marks by moving during transport pauses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stationary pressing roller with heating function is used to press the medium against the transport belt, then the medium can be heated and pressed effectively, but striped heating marks are left on the medium when transport is stopped, damaging the appearance
Solution Approach 1:
The pressing roller is made movable in the transport direction, allowing it to dynamically adjust its position rather than remaining stationary. This dynamic capability enables the roller to change its pressing location along the medium, preventing concentrated heating at a single point and thereby eliminating striped heating marks while maintaining effective heating and pressing functionality
2Productivity
If the medium is intermittently transported to perform printing operations, then printing can be performed on the medium, but the same portion of the medium is repeatedly heated and pressed at the same location, causing heating marks
Solution Approach 1:
The pressing roller moves in the transport direction in synchronization with the intermittent transport of the medium. During printing pauses, the roller shifts to a different position along the medium, so that when printing resumes and the medium is repositioned, a different section of the medium contacts the heating surface, preventing repeated heating at the same location
Solution Approach 2:
The pressing roller implements periodic movement in the transport direction that corresponds to the printing cycle. The roller alternates between pressing positions and moving positions, creating a periodic pattern of contact that distributes heating across different sections of the medium over time, preventing concentrated thermal damage
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
This solution effectively prevents heating marks and maintains fabric appearance by ensuring continuous, controlled contact between the medium and transport belt, even during intermittent transport.
Implementation Method 1
a heating and pressing portion 61 for heating the medium 95 and pressing the medium against the transport belt 23
Implementation Method 2
adhesiveness of the adhesive increase by heating
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A printing apparatus includes a printing unit which performs printing on a medium (95), a transport belt (23) which supports the medium (95), a belt driving roller which transports the medium (95) in a transport direction by rotating the transport belt (23), a heating and pressing portion (61) which has a heater (61a) and is provided to be movable along the transport direction while heating the medium (95) and pressing the medium (95) against the transport belt (23), and a control unit which controls a movement and a temperature of the heating and pressing portion (61).