Image Forming Apparatus Test Chart Printing Sequence
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Solution Overview
Problem
Existing image forming apparatus technologies cannot consecutively print multiple test chart images with different confirmation perspectives, leading to prolonged confirmation times.
Innovation Solution
An image forming apparatus with multiple sheet holding units and a printing unit, controlled by processors to receive print settings for different types of test chart images and sequentially print these images on sheets from all or specific sheet holding units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all sheet holding cassettes are consecutively selected and a specific test chart image is printed, then printing of test chart images of different types cannot be consecutively performed, but the task of confirmation takes too much time
Solution Approach 1:
The system dynamically adjusts the printing sequence based on the type of test chart image being printed. When a first type test chart image is printed on sheets from all cassettes, the system then automatically prints a second type test chart image on sheets from at least one cassette. This dynamic switching between different printing modes allows efficient consecutive printing of multiple test chart image types without manual intervention, resolving the contradiction between productivity and operation complexity
Solution Approach 2:
The invention enables continuous printing operations by automatically transitioning between different test chart image printing tasks. After completing printing of first type test chart images on all cassettes, the system continuously proceeds to print second type test chart images without interruption or idle time, maintaining continuous useful action and eliminating the time loss that would occur with sequential manual operations
2Reliability
If test chart images are printed on sheets from all sheet holding cassettes, then printing operation confirmation is comprehensive, but the time required for confirmation increases
Solution Approach 1:
The invention segments the test chart printing process into two distinct types: first type test chart images that are printed on sheets from all cassettes for comprehensive confirmation, and second type test chart images that are printed on sheets from at least one cassette for additional verification. This segmentation allows the system to efficiently perform both comprehensive confirmation and additional verification without treating all confirmations equally, thereby reducing overall time loss while maintaining reliability
Data Source
AI summary
The image forming apparatus which comprises a plurality of sheet holding units each configured to hold a sheet and a printing unit configured to print an image, receives a print setting for a first type test chart image to be printed on sheets conveyed from all of the plurality of sheet holding units and for a second type test chart image to be printed on a sheet conveyed from at least one sheet holding unit of the plurality of sheet holding units, and controls the printing unit on a basis of the print setting to convey sheets from each of the plurality of sheet holding units and print the first type test chart image and following thereafter convey a sheet from the at least one sheet holding unit from among the plurality of sheet holding units and print the second type test chart image.