Image Forming Apparatus Test Printing Inspection
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Solution Overview
Problem
Existing image forming apparatuses lack an efficient method to perform quality inspections of printed images, particularly in commercial printing settings where large volumes of prints are produced.
Innovation Solution
The image forming apparatus includes an image forming unit, a reader, an inspector, a display, and a controller that enables both main printing and test printing modes. During test printing, the apparatus displays information indicating that test printing has been executed and provides an inspection result for the image formed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If test printing is executed to inspect printed images, then quality inspection is improved, but printing time and productivity are worsened
Solution Approach 1:
The patent applies preliminary action by executing test printing before main printing to inspect the printing apparatus and confirm image quality. This allows detection of abnormalities in advance, preventing defective prints from being produced during main printing operations. The test printing serves as a preparatory step that ensures the printing system is functioning correctly before processing the actual printing job.
2Manufacturing precision
If inspection of printed images is performed, then manufacturing precision is improved, but time consumption increases
Solution Approach 1:
The inspection is performed as a preliminary action during test printing before main printing begins. This timing allows the inspection to be completed efficiently without adding significant time to the overall printing process, as the test printing itself serves dual purposes: preparing the printing apparatus and providing samples for quality inspection.
Solution Approach 2:
The patent implements feedback by comparing the printed images from test printing against predetermined reference images to detect abnormalities. This feedback mechanism allows immediate identification of printing quality issues, enabling corrective actions to be taken before main printing starts, thus minimizing time loss while ensuring high manufacturing precision.
Data Source
AI summary
An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image data, a reader configured to read the sheet on which the image has been formed, an inspector configured to execute an inspection of a reading result of the image read by the reader, a display configured to display an inspection result of the inspection executed by the inspector, and a controller configured to execute main printing for controlling the image forming unit to form an image based on the image data, or test printing for controlling the image forming unit to form an image based on only a part of the image data, wherein the display is configured to display first information and second information.