IMAGE FORMING APPARATUS CAPABLE OF DETECTING LENGTH OF SHEET IN CONVEYING DIRECTION
An image forming apparatus includes first and second light emitting units, a light receiving unit for receiving light of the first light emitting unit when it is reflected, and receiving light of the second light emitting unit when it is not reflected, to output a signal of a predetermined level, an...
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| creator | OGASAHARA, Okito |
| description | An image forming apparatus includes first and second light emitting units, a light receiving unit for receiving light of the first light emitting unit when it is reflected, and receiving light of the second light emitting unit when it is not reflected, to output a signal of a predetermined level, and a control unit for starting light emission of the first light emitting unit before a front end of a paper sheet reaches an area, stopping light emission of the first light emitting unit while starting light emission of the second light emitting unit before a rear end of the paper sheet passes the area, and detecting a length of the paper sheet based on time after the output signal becomes a predetermined level during light emission of the first light emitting unit until the output signal becomes the predetermined level during light emission of the second light emitting unit. |
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light emitting unit when it is reflected, and receiving light of the second light emitting unit when it is not reflected, to output a signal of a predetermined level, and a control unit for starting light emission of the first light emitting unit before a front end of a paper sheet reaches an area, stopping light emission of the first light emitting unit while starting light emission of the second light emitting unit before a rear end of the paper sheet passes the area, and detecting a length of the paper sheet based on time after the output signal becomes a predetermined level during light emission of the first light emitting unit until the output signal becomes the predetermined level during light emission of the second light emitting unit.</description><language>eng</language><subject>CONVEYING ; CORRECTION OF TYPOGRAPHICAL ERRORS ; HANDLING THIN OR FILAMENTARY MATERIAL ; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES ; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A 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unit.</description><subject>CONVEYING</subject><subject>CORRECTION OF TYPOGRAPHICAL ERRORS</subject><subject>HANDLING THIN OR FILAMENTARY MATERIAL</subject><subject>HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES</subject><subject>i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME</subject><subject>LINING MACHINES</subject><subject>PACKING</subject><subject>PERFORMING OPERATIONS</subject><subject>PRINTING</subject><subject>SELECTIVE PRINTING 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Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>OGASAHARA, Okito</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>IMAGE FORMING APPARATUS CAPABLE OF DETECTING LENGTH OF SHEET IN CONVEYING DIRECTION</title><date>2021-01-28</date><risdate>2021</risdate><abstract>An image forming apparatus includes first and second light emitting units, a light receiving unit for receiving light of the first light emitting unit when it is reflected, and receiving light of the second light emitting unit when it is not reflected, to output a signal of a predetermined level, and a control unit for starting light emission of the first light emitting unit before a front end of a paper sheet reaches an area, stopping light emission of the first light emitting unit while starting light emission of the second light emitting unit before a rear end of the paper sheet passes the area, and detecting a length of the paper sheet based on time after the 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| language | eng |
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| subjects | CONVEYING CORRECTION OF TYPOGRAPHICAL ERRORS HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PACKING PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS STORING TRANSPORTING TYPEWRITERS |
| title | IMAGE FORMING APPARATUS CAPABLE OF DETECTING LENGTH OF SHEET IN CONVEYING DIRECTION |
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