Print Media Stacking Tray Motion for Usable Output Sorting

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Solution Overview

Problem

The existing printing apparatuses that move the stacking part diagonally for sorting print media reduce usability, necessitating further improvements.

Innovation Solution

The printing apparatus is designed with a stacking part that automatically expands and contracts in the Y direction and moves in the X direction to sort print media, enhancing usability by minimizing the influence of external forces on the alignment and visibility of stacked media.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the stacking part is moved diagonally to sort print media, then the sorting function is achieved, but the usability is reduced

Engineering Contradiction:
Improvesorting functionVSAvoidusability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The stacking part is designed to dynamically change its movement pattern based on operational requirements. It can move not only in the conveyance direction (Y-axis) but also in the width direction (X-axis), transitioning between different movement states to optimize both sorting capability and usability

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stacking part introduces movement in the width direction (X-axis) as an additional dimension beyond the conventional conveyance direction (Y-axis). This dimensional expansion enables more flexible sorting while maintaining better usability by allowing orthogonal movement that minimizes interference with media alignment

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If the stacking part is moved diagonally for sorting, then media separation is achieved, but alignment stability deteriorates

Engineering Contradiction:
Improvemedia separationVSAvoidalignment stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The stacking part employs dynamic movement control, switching between moving in the conveyance direction for stability and moving in the width direction for separation. This dynamic adjustment maintains alignment stability while achieving effective media sorting

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent employs asymmetric movement strategies where the stacking part moves primarily in the conveyance direction to maintain alignment stability, while occasionally moving in the width direction to achieve separation. This asymmetric approach prioritizes stability while enabling necessary sorting functionality

Inventive Principle:
Principle #4Asymmetry

3Adaptability or versatility

If the stacking part moves diagonally, then sorting capability is improved, but user burden increases

Engineering Contradiction:
Improvesorting capabilityVSAvoiduser burden
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The stacking part performs self-service by automatically moving in the width direction to sort media without requiring user intervention. The system autonomously manages the sorting process, reducing the burden on users while maintaining enhanced sorting capability

Inventive Principle:
Principle #25Self-service

4Adaptability or versatility

If the stacking part is moved diagonally, then sorting is achieved, but space utilization is reduced

Engineering Contradiction:
Improvesorting functionVSAvoidspace utilization
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The stacking part uses dynamic movement in the width direction to achieve sorting without requiring a larger stationary space. By moving orthogonally rather than diagonally, the system optimizes space utilization while maintaining sorting functionality

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4686680A1Printing apparatus and control method of a printing apparatus
Publication Date: 2026.02.04 CANON KK
  • EP4686680A1 patent drawingFigure 1
  • EP4686680A1 patent drawingFigure 2A~2B
  • EP4686680A1 patent drawingFigure 3A~3B

AI summary

A printing apparatus(1) that can improve usability includes a conveyance unit(2) configured to convey a print medium; a first stacking part(42) configured to allow the print medium discharged in a first direction(Y) by the conveyance unit(2) to be stacked thereon and to move in the first direction(Y) from an accommodated position; and a control unit(71) configured to control stacking of the print medium on the first stacking part(42), wherein, in a state where the first stacking part(42) is moved in the first direction(Y) from the accommodated position, the control unit(71) executes a first operation for stacking the print medium at a first position on the first stacking part(42), and a second operation for stacking the print medium at a second position on the first stacking part(42), the second position being different from the first position in a second direction(X) intersecting with the first direction(Y).