Duplex Printing Media Cassette With Flipping Receptacle
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Solution Overview
Problem
Conventional thermal printers are costly and bulky due to the need for complex mechanisms to print on both sides of receiver media, often requiring two thermal print heads and cumbersome paper handling systems.
Innovation Solution
A receiver supply media cassette that holds cut sheet media, featuring a media tray with a ramp and a removable media receptacle that allows for flipping, enabling printing on both sides of the media without the need for additional print heads or large mechanisms, thus maintaining a compact and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two thermal print heads and cumbersome paper handling mechanisms are used to print on both sides of receiver media, then duplex printing capability is achieved, but device complexity and size increase significantly
Solution Approach 1:
The media handling system is segmented into separate functional zones: a feed end for loading media and a take-up end for collecting printed media. The media reel can be independently rotated and positioned, allowing the same physical media to be presented to the print head from opposite sides without requiring dual print heads or complex repositioning mechanisms.
Solution Approach 2:
Instead of repositioning the media supply or using two print heads, the invention inverts the approach by rotating the media reel itself to present the opposite side of the media to the single print head. This reversal of the conventional approach eliminates the need for complex dual-sided printing mechanisms.
2Adaptability or versatility
If large mechanisms are used to reposition the receiver media supply roll after first-side printing, then second-side printing is enabled, but device size and cost increase
Solution Approach 1:
The single thermal print head serves multiple functions by printing on both sides of the media. The media reel rotation mechanism provides universal functionality for presenting both sides of the media to the print head, eliminating the need for separate print heads or dedicated repositioning mechanisms for each side.
Solution Approach 2:
The media reel automatically presents both sides of the media through its rotation capability. The system uses the existing media feed and take-up paths for both sides of printing, allowing the media handling subsystem to serve itself for duplex printing without requiring additional dedicated repositioning mechanisms.
3Adaptability or versatility
If direct user handling of receiver media is performed for flipping, then duplex printing is possible, but artifacts may be introduced to the printed surfaces
Solution Approach 1:
The media reel acts as an intermediary mechanism that performs the flipping action automatically without direct user contact with the printed surfaces. The take-up end and feed end guides serve as intermediaries to redirect the media path, allowing the media to be flipped and repositioned without user hands touching the printed areas, thus preventing fingerprints and artifacts.
Data Source
AI summary
A receiver supply media cassette adapted to hold cut sheet media and for permitting an imaging apparatus to form images on both sides of the cut sheet media, comprising a media tray including a cut sheet receiving well having at least two side walls, and a ramp disposed between the two side walls and a removable media receptacle adapted to fit inside the cut sheet receiving well of the media tray including a first compartment adapted to hold cut sheet media to be fed to the imaging apparatus, a second compartment adapted to receive cut sheet media from the imaging apparatus, wherein the removable media receptacle is flipped inside the cut sheet receiving well of the media tray after images have been formed on a first side of the cut sheet media so that images can be formed on a second side of the cut sheet media.