Printing And Cutting Mechanism With Tension Bar For Stable Media Cutting
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Solution Overview
Problem
Inkjet recording apparatuses face challenges in simultaneously performing printing and cutting operations due to medium slackening during cutting, leading to improper cutting and transport issues, and the complexity of cutter configurations, as well as medium wrinkling and jamming during slitting.
Innovation Solution
A printing device with a tension applying mechanism using a tension bar to stabilize medium tension during cutting, and a cutting device with a medium pressing member to guide and prevent interference, along with a guide member to avoid excessive contact pressure during medium separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the medium is transported toward the cutter while being cut by the cutter, then the cutting operation can be performed, but the medium slacks and cannot be appropriately cut
Solution Approach 1:
A tension bar is introduced as an intermediary element between the printing mechanism and the cutting mechanism. The tension bar applies tension to the medium in the transport direction, preventing slackening during cutting operations. This mediator enables the medium to maintain proper tension state while being transported and cut simultaneously.
Solution Approach 2:
The physical state of the medium is changed by applying tension through the tension bar. The tension parameter is adjusted to maintain the medium in a taut state during cutting, preventing the medium from slacking and ensuring precise cutting despite simultaneous transport.
2Productivity
If printing and cutting are performed simultaneously with medium transport, then productivity increases, but medium tension stability deteriorates
Solution Approach 1:
The tension bar serves as a mediator that stabilizes medium tension during simultaneous printing and cutting operations. It maintains consistent tension on the medium as it passes through the printing and cutting zones, enabling stable multi-operation processing.
Solution Approach 2:
The tension bar is designed to be movable in the transport direction, allowing it to dynamically adjust its position and maintain optimal tension on the medium during simultaneous printing and cutting operations, rather than being a fixed rigid structure.
3Reliability
If the cutter configuration includes upper and lower movable blades, then cutting capability is improved, but device complexity increases
Solution Approach 1:
The tension bar acts as a mediator that simplifies the cutter configuration by eliminating the need for complex upper and lower movable blade systems. By maintaining medium tension externally, the cutter can use a simpler single blade configuration while still achieving reliable cutting.
4Productivity
If the medium is transported toward the slitter during printing, then productivity increases, but medium wrinkling and jamming occur
Solution Approach 1:
The tension bar serves as a mediator between the printing mechanism and the slitter, maintaining proper medium tension during simultaneous operations. This prevents the medium from wrinkling or jamming while being transported through the printing and slitting zones.
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
Enables simultaneous printing and cutting operations without medium slackening or wrinkling, ensuring precise cutting and stable medium transport.
Implementation Method 1
a tension applying mechanism that includes a tension bar that comes into contact with the medium after printing and applies tension to the medium
Implementation Method 2
a cutting mechanism that includes a cutter blade that cuts the medium, a carriage that holds the cutter blade, a carriage driving mechanism that moves the carriage in a width direction of the medium, and a medium pressing member that presses the medium toward the opposing portion
Data Source
AI summary
A cutting device includes a medium transporting mechanism, a cutting mechanism and a cutting platen. The cutting mechanism includes a cutter blade, a carriage holding the cutter blade, a carriage driving mechanism moving the carriage in a width direction of a medium, and a medium pressing member pressing the medium. The medium pressing member is attached to the carriage, and the medium pressing member is formed with an opposing surface facing the opposing portion. An advancing direction side of the carriage when the cutter blade cuts the medium is a first direction side, a first inclined surface is formed at an end portion on the first direction side of the opposing surface. The first inclined surface being inclined toward a side away from the opposing portion toward the first direction side, and the first inclined surface is disposed more toward the first direction side than the cutter blade.