Inkjet Printing Unit With Reversible Data Latching
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Solution Overview
Problem
Conventional inkjet recording apparatuses are limited in their ability to record images independently of the direction of conveyance, leading to inefficiencies in operation and maintenance when the printing unit and conveyance apparatus are manufactured and sold as separate units.
Innovation Solution
A printing unit with a recording head that can jet ink in both normal and reverse conveyance directions, equipped with a nozzle array, a register for latching jetting data, a page memory for storing image data, and a control section that adjusts jetting based on detected conveyance direction, allowing for flexible image recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the printing unit is installed in conformity to the conveyance direction, then image recording is enabled, but the operation panels cannot be aligned when manufactured separately
Solution Approach 1:
The patent applies inversion by enabling the printing unit to operate in both normal and reverse conveyance directions. The control section detects conveyance direction and inverts the image data accordingly, allowing the printing unit to be installed with operation panels aligned (even in opposite directions) while still recording images correctly by processing data in reverse order when needed
2Ease of manufacture
If the printing unit and conveyance apparatus are manufactured and sold as separate units, then manufacturing flexibility is improved, but operation and maintenance efficiency deteriorates due to panel misalignment
Solution Approach 1:
The patent applies universality by designing the printing unit to function independently in both normal and reverse conveyance directions. The control section with conveyance direction detection capability makes the printing unit universal, allowing it to be installed in either orientation and maintain both image recording functionality and operational accessibility
3Ease of manufacture
If the printing unit is fixed in one installation direction, then manufacturing is simplified, but adaptability to different installation configurations deteriorates
Solution Approach 1:
The patent applies dynamics by making the printing unit's operational characteristics adaptive to its installation configuration. The control section dynamically detects the conveyance direction and adjusts image data processing accordingly, allowing the same manufactured unit to adapt to different installation orientations without requiring different manufacturing configurations
Data Source
AI summary
A print unit memorizes image data to be output to a page of recording media at a register as jetting data in an order of storing a plurality of image data of one line in page memory, wherein each of the image data of one line is memorized at the register in an order of storing the plurality of image data of one dot, in case when a conveyance direction of recording media is normal; and memorizes the image data to be output to the page of the recording media at the register in the order of storing the plurality of the image data of one line, wherein each of the image data of one line is memorized in a reverse order to the order of storing the plurality of the image data of one dot, in case when the conveyance direction is reverse.