Self-diagnostic system for image reading equipment
AssigneeFuji Xerox Co., Ltd.
InventorsMitsuo Ohtaki, Akihiko Tanaka, Izumi Takashima
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Abstract
A self-diagnostic system for image reading equipment having an imaging unit and at least one circuit board, including a pattern generator, which generates a prescribed pattern signal, disposed at the input end and/or the output end of the circuit board. According to this system, a source of problems occurring in the image reading equipment can be identified, that is, a faulty component can be identified by performing a copying operation for a pattern generated by the pattern generator.
Claims25
An image reading apparatus having a self-diagnostic system, comprising:
- an imaging unit for reading image information from an original document;
- a first circuit board connected to the imaging unit for processing the image information obtained from the imaging unit;
- a first pattern generator, selectively connected to an input end of said first circuit board, for generating a prescribed pattern signal which may be used to determine whether a problem exists in said imaging unit;
- and
- a second pattern generator, selectively connected to an output end of said first circuit board, for generating a prescribed pattern signal which may be used to determine whether a problem exists in said first circuit board.
A self-diagnostic system for an image reading apparatus having an imaging unit and at least one circuit board connected to the imaging unit for processing image information obtained from the imaging unit, said self-diagnostic system comprising:
- a first pattern generator, selectively connected to an input end of the at least one circuit board, for generating a prescribed pattern signal which may be used to determine whether a problem exists in said imaging unit;
- and
- a second pattern generator, selectively connected to an output end of the at least one circuit board, for generating a prescribed pattern signal which may be used to determine whether a problem exists in the at least one circuit board.
Dependencies are inferred from the claim text.