Movable Print Stacking Layout for Compact Media Sorting

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Solution Overview

Problem

Existing printing apparatuses require a large installation space due to the stacking part being designed to accommodate various sizes of print media, causing the apparatus to protrude and increase in size.

Innovation Solution

The printing apparatus incorporates a stacking part that automatically expands and contracts to accommodate printed media, and moves in a direction orthogonal to its expansion/contraction direction to sort media, reducing the need for external space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the stacking part is designed to accommodate various sizes of print media, then the adaptability is improved, but the apparatus size increases

Engineering Contradiction:
Improvecapability to accommodate various sizes of print mediaVSAvoidapparatus footprint
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The stacking part is designed to move in the width direction rather than being fixed, enabling dynamic repositioning to accommodate different print media sizes. This dynamic movement allows the stacking part to adapt to various media widths without requiring the apparatus to have a large fixed footprint for all possible sizes.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Instead of accommodating size variations in the depth direction (which would increase footprint), the stacking part utilizes movement in the width direction (orthogonal dimension). This dimensional shift allows adaptability to be achieved through lateral positioning rather than increasing the overall apparatus footprint.

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

2Area of moving object

If the stacking part protrudes from the printing apparatus to ensure stacking area, then the stacking capability is improved, but the apparatus size increases

Engineering Contradiction:
Improvestacking areaVSAvoidapparatus footprint
Core Design Contradiction:
Area of moving objectVSArea of stationary object

Solution Approach 1:

The stacking part moves in the width direction to dynamically create sufficient stacking area rather than permanently protruding. This movement capability allows the stacking part to extend into the necessary area during operation while maintaining a compact apparatus footprint when not in use.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The stacking part is positioned in advance in the width direction before print media are stacked, ensuring sufficient stacking area is available when needed. This preliminary positioning allows the apparatus to maintain a compact footprint while still providing adequate stacking space during the stacking operation.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the stacking part moves diagonally to sort print media, then the sorting capability is improved, but the device complexity increases

Engineering Contradiction:
Improvesorting capabilityVSAvoidmovement mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The stacking part moves in the width direction (orthogonally to the discharge direction) to achieve sorting, rather than complex diagonal movement. This simplified directional movement maintains sorting capability while reducing the complexity of the movement mechanism compared to diagonal trajectories.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Instead of diagonal movement that would require complex coordinated motion in both length and width directions, the stacking part utilizes movement in the width direction alone. This dimensional simplification achieves sorting functionality with a less complex mechanism by operating in a single orthogonal dimension.

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

Data Source

PatentEP4686681A1Printing apparatus
Publication Date: 2026.02.04 CANON KK
  • EP4686681A1 patent drawingFigure 1
  • EP4686681A1 patent drawingFigure 2A~B2
  • EP4686681A1 patent drawingFigure 3A~3B

AI summary

A technology that enables downsizing of an apparatus is to be provided. A printing apparatus (1) includes: an accommodating unit (121,131) configured to accommodate a print medium; a conveyance unit (2) configured to convey the print medium fed from the accommodating unit (121,131) in a first direction (Y); a printing unit (3) configured to perform printing on the print medium conveyed by the conveyance unit (2); and a first stacking part (42) configured to stack the print medium, on which printing has been performed by the printing unit (2), at a first position and a second position which is different from the first position in a second direction (X) intersecting with the first direction (Y), wherein the first stacking part (42) is arranged above the accommodating unit (121,131), below the printing unit (3).