Thermal Head Position Control for Ink Ribbon Savings

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Solution Overview

Problem

In thermal transfer printers, users cannot visualize the amount of ink ribbon saved during non-printing periods, making it difficult to assess the ink-saving effect.

Innovation Solution

A printer device with a printing data look-ahead unit, head position control unit, ink ribbon saved amount calculation unit, and display unit that calculates and displays the saved ink ribbon amount by determining the contact and non-contact states of the thermal head, ink ribbon, and printing paper based on printing data, allowing users to quantify the saved ink.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If the thermal head, ink ribbon, and printing paper are kept in a non-contact state during non-printing periods, then ink ribbon consumption is reduced, but the user cannot visualize the saved amount

Engineering Contradiction:
Improveink ribbon consumptionVSAvoidvisibility of saved amount
Core Design Contradiction:
Loss of substanceVSLoss of information

Solution Approach 1:

The system implements feedback by calculating the saved ink ribbon amount based on the conveyed distance of printing paper during non-contact periods, and displaying this information to the user. The control unit continuously monitors the thermal head position and printing paper conveyance, computes the saved amount, and provides visual feedback through the display unit, enabling users to see the effect of ink-saving operations.

Inventive Principle:
Principle #23Feedback

2Loss of substance

If the thermal head is frequently moved to non-contact state, then ink ribbon is saved, but the control complexity increases

Engineering Contradiction:
Improveink ribbon consumptionVSAvoidcontrol system complexity
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

The system performs self-service by automatically determining the saved ink ribbon amount through internal sensors and control units that monitor thermal head position and printing paper conveyance. The control unit autonomously calculates the saved amount based on conveyed distance during non-contact periods and displays it without requiring user intervention or complex external control systems.

Inventive Principle:
Principle #25Self-service

3Productivity

If the thermal head remains in contact state, then printing readiness is maintained, but ink ribbon consumption increases

Engineering Contradiction:
Improveprinting readinessVSAvoidink ribbon consumption
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The system applies dynamics by making the thermal head position adjustable between contact and non-contact states based on operational needs. The head position control unit dynamically transitions the thermal head between these states, maintaining contact when printing is required and separating to non-contact during idle periods, thus balancing printing readiness with ink conservation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12122169B2Printer device ink ribbon saving determination
Publication Date: 2024.10.22 TOSHIBA TEC KK
  • US12122169B2 patent drawing
  • US12122169B2 patent drawing
  • US12122169B2 patent drawing

AI summary

According to one embodiment, a thermal heat transfer printer (printer device) includes a printing data look-ahead unit configured to look ahead a data printing position if printing is performed; a head position control unit configured to cause a thermal head, an ink ribbon, and printing paper to be in a contact state or a non-contact state based on a look-ahead result of the printing data look-ahead unit; an ink ribbon saved amount calculation unit configured to calculate a saved amount of the ink ribbon based on a conveyed amount of the printing paper in the non-contact state; and an ink ribbon saved amount display unit configured to display the saved amount calculated by the ink ribbon saved amount calculation unit.