Recording Device Current Profile Generation for Transport Speed Modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing recording devices face productivity losses due to the need for repeated reference current measurements across multiple transport speed modes, leading to increased downtime and reduced throughput.
Innovation Solution
A recording device with a control method that acquires a first current profile at a faster transport speed mode and uses it to generate current profiles for slower speed modes, eliminating the need for actual measurements in acceleration and constant speed regions, thereby reducing downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference current measurement is performed for each transport speed mode before ink discharge operation, then accurate current profiles are acquired for tension control, but throughput decreases due to increased waiting time
Solution Approach 1:
The patent performs reference current measurement only once at the fastest transport speed mode in advance, before any ink discharge operations begin. This preliminary measurement establishes a baseline current profile that can be reused and adjusted for all other transport speed modes, eliminating the need to repeat measurements for each speed mode change and thus reducing waiting time while maintaining measurement accuracy through subsequent profile generation based on the preliminary data
Solution Approach 2:
The patent generates current profiles for slower transport speed modes by copying and adjusting the reference current profile obtained from the fastest speed mode measurement. Instead of performing new measurements for each speed mode, the system creates derived current profiles based on the single preliminary measurement, significantly reducing the time required to prepare for ink discharge operations at different transport speeds
2Adaptability or versatility
If reference current measurement is performed at multiple transport speed modes, then current profiles for all speed modes are available, but time consumption increases due to repeated measurements
Solution Approach 1:
The patent performs reference current measurement only once at the fastest transport speed mode in advance, before any ink discharge operations begin. This preliminary measurement establishes a baseline current profile that can be reused and adjusted for all other transport speed modes, eliminating the need to repeat measurements for each speed mode change and thus reducing waiting time while maintaining measurement accuracy through subsequent profile generation based on the preliminary data
Solution Approach 2:
The patent makes the reference current profile obtained from the fastest transport speed mode universally applicable to all other transport speed modes. By generating and adjusting this single profile for multiple speed modes rather than performing separate measurements for each mode, the system achieves multi-speed adaptability while significantly reducing the total time required for current profile acquisition across all operating conditions
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 approach shortens the time required for acquiring current profiles, enhancing productivity by minimizing downtime and allowing for faster transitions between transport speed modes.
Implementation Method 1
a current sensor configured to measure a reference current driving unit
Implementation Method 2
a driving unit configured to drive the transport unit with a plurality of speed profiles
Data Source
AI summary
A recording device includes: a transport unit configured to transport a medium in a plurality of transport speed modes; a driving unit configured to drive the transport unit with a plurality of speed profiles, each corresponding to one of the plurality of transport speed modes; a current sensor configured to measure a reference current the driving unit, the reference current being a current flowing in the driving unit when the medium is transported in a loosened state; and a control configured to acquire a plurality of current profiles, each corresponding to one of the speed profiles, based on the reference current. The control unit is configured to acquire a first current profile based on the reference current when the medium is transported in a first transport speed mode, and to generate a second current profile based on the first current profile.