JPS55129875A - Double feed detection system for document - Google Patents

Double feed detection system for document

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Publication number
JPS55129875A
JPS55129875A JP3789679A JP3789679A JPS55129875A JP S55129875 A JPS55129875 A JP S55129875A JP 3789679 A JP3789679 A JP 3789679A JP 3789679 A JP3789679 A JP 3789679A JP S55129875 A JPS55129875 A JP S55129875A
Authority
JP
Japan
Prior art keywords
document
length
section
fed
double feed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3789679A
Other languages
Japanese (ja)
Inventor
Hajime Nakaaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3789679A priority Critical patent/JPS55129875A/en
Publication of JPS55129875A publication Critical patent/JPS55129875A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To enable to detect the double feed, by detecting the tip and tail end of document with photo sensor to detect the length of the document and comparing it with the length stored in advance in carrying the document from the hopper to the processing section.
CONSTITUTION: The mesure timing generating section 1 produces the timing signal in synchronizing with the document feed speed of unit and fed to the document length measuring section 3. Further, the running document detector 2 detects the tip and tail end of document carried from the hopper to the processing section, the detected signal is fed to the length measuring section 3 and the comparison section 6 to measure the length of decument at the meauring section 3. Further, the signal representing the length of document used at present from the document length indication section 4 is fed to the indication document length memory register 5, the length of the document predetermined from the register 5 is fed to the comparison section 6, it is compared with the length of the document measured at the measuring section 3, and the result of comparison is fed to the double feed alarm delivery section 7 to detect the double feed.
COPYRIGHT: (C)1980,JPO&Japio
JP3789679A 1979-03-30 1979-03-30 Double feed detection system for document Pending JPS55129875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3789679A JPS55129875A (en) 1979-03-30 1979-03-30 Double feed detection system for document

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3789679A JPS55129875A (en) 1979-03-30 1979-03-30 Double feed detection system for document

Publications (1)

Publication Number Publication Date
JPS55129875A true JPS55129875A (en) 1980-10-08

Family

ID=12510297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3789679A Pending JPS55129875A (en) 1979-03-30 1979-03-30 Double feed detection system for document

Country Status (1)

Country Link
JP (1) JPS55129875A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201968A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Optical character reader
JPS5816376A (en) * 1981-07-22 1983-01-31 Hitachi Ltd Setting system of slip reader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201968A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Optical character reader
JPS5816376A (en) * 1981-07-22 1983-01-31 Hitachi Ltd Setting system of slip reader

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