Printer Optical Detection for Module Installation and Paper Feeding
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Solution Overview
Problem
Current printers with mechanical detectors cannot accurately detect the installation status of the image forming module, leading to increased production costs due to the need for additional mechanisms to facilitate the image forming process and paper feeding.
Innovation Solution
A printer design incorporating a light guide unit and an optical detector coupled with a controller, which uses infrared light to determine the installation status of the image forming module and monitor paper feeding, eliminating the need for multiple chip and circuit board sets by simplifying the detection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mechanical detector is used to detect paper passage, then the feeding status can be detected, but the detector cannot detect the installation status of the image forming module
Solution Approach 1:
The optical detector is designed to perform multiple detection functions: it can detect both the installation status of the image forming module (by detecting the light guide unit) and the paper passage status (by detecting light interruption). This single detector replaces what would traditionally require separate mechanical detectors, achieving multi-functionality and resolving the contradiction between detection accuracy and detection function versatility.
2Reliability
If additional mechanisms are added to detect the image forming module, then the installation status can be detected, but the production cost increases
Solution Approach 1:
The patent merges the image forming module detection function with the existing optical detection system. The light guide unit is integrated into the image forming module, and the optical detector uses the same light emission and reception mechanism to detect both module installation and paper passage. This merging eliminates the need for separate detection mechanisms, reducing device complexity and production costs while maintaining reliable installation detection.
3Measurement precision
If a chip and circuit board are installed in the image forming module and frame for sensing, then the image forming module installation can be detected, but at least two sets of chip and circuit board are needed increasing production costs
Solution Approach 1:
The patent replaces the mechanical/electrical sensing system (chips and circuit boards) with an optical detection system. The light guide unit and optical detector use light transmission to detect module installation, eliminating the need for electrical contacts and circuit boards in the image forming module. This substitution reduces the quantity of electronic components required while maintaining precise installation sensing capability.
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 accurate detection of the image forming module installation and paper feeding status while reducing production costs by using a single set of chip and circuit board, and provides early warning for paper jams, ensuring efficient operation.
Implementation Method 1
the optical detector comprises an illuminating part for emitting a light to the light guide unit and a receiving part for receiving the light
Data Source
AI summary
A printer is disclosed, which comprises a frame, an image forming module, a controller, a light guide unit, and an optical detector. The image forming module is disposed opposite to the frame and forms a passage. The light guide unit is disposed in the frame and is connected to the controller. The optical detector comprises an illuminating part and a receiving part. The illuminating part illuminates a beam to the light guide d unit, and the receiving part is for receiving the light.