Image Recording Device Perforation Detection and Region Control
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Solution Overview
Problem
Existing image recording devices require cumbersome user settings for perforation positions and types, leading to potential image smearing and waste when actual perforations do not match defined settings, and lack flexibility in detecting misaligned sheets.
Innovation Solution
An image recording device with a first detecting unit to identify perforation positions, a recording unit to image on designated regions, and a control unit to prohibit imaging on perforated areas, allowing for borderless printing by dividing the sheet into regions and controlling the recording process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user specifies the positions and size of perforations manually, then the printing system can avoid printing on perforated areas, but the operation becomes cumbersome and error-prone
Solution Approach 1:
The recording sheet itself performs the detection function by incorporating a detection mark that automatically indicates perforation information to the control unit, eliminating the need for manual user input and enabling the system to self-configure printing parameters
Solution Approach 2:
The detection mark is pre-formed on the recording sheet along with the content to be printed, allowing the system to detect perforation positions before the printing process begins and automatically adjust printing parameters in advance
2Reliability
If the user-defined perforation positions do not match actual perforations, then images may be printed on perforated areas causing smearing and waste, but detecting actual perforations automatically requires additional detection mechanisms
Solution Approach 1:
The detection mark is combined with the content to be printed on the same recording sheet, integrating the detection function into the existing printing system without requiring separate detection hardware or mechanisms
Solution Approach 2:
The detection mark serves as an intermediary element that conveys perforation position information from the physical sheet to the control unit, enabling automatic detection through a simple optical or positional reference system
3Adaptability or versatility
If the recording sheet is placed out of alignment, then conventional detection methods fail to detect perforations, but the invention maintains detection capability through the detection mark system
Solution Approach 1:
The system changes the reference parameter from fixed absolute positions to relative positional relationships between the detection mark and content, allowing automatic adaptation to various sheet alignments while maintaining detection precision through proportional scaling
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient borderless printing by accurately detecting perforations and preventing ink from being applied to perforated areas, reducing waste and user burden, and maintaining alignment even if the sheet is misplaced.
Implementation Method 1
a detection sensor to detect a position of a perforation
Data Source
AI summary
An image recording device includes a first detecting unit, a recording unit, and a control unit. The first detecting unit detects a position of a perforation pre-formed in a recording sheet. The recording unit records an image on the recording sheet based on printing data. The control unit is configured to imaginarily divide the recording sheet into a first region including a portion where the perforation is pre-formed, and a second region excluding the first region based on the position of the perforation detected by the first detecting unit. The control unit prohibits the recording unit from recording the image on the first region and controls the recording unit to record the image at least partially on the second region.