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JPS57135573A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPS57135573A
JPS57135573A JP56021236A JP2123681A JPS57135573A JP S57135573 A JPS57135573 A JP S57135573A JP 56021236 A JP56021236 A JP 56021236A JP 2123681 A JP2123681 A JP 2123681A JP S57135573 A JPS57135573 A JP S57135573A
Authority
JP
Japan
Prior art keywords
original
elements
clock
read
registers
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.)
Granted
Application number
JP56021236A
Other languages
Japanese (ja)
Other versions
JPS642313B2 (en
Inventor
Tadashi Yoshida
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56021236A priority Critical patent/JPS57135573A/en
Priority to US06/339,282 priority patent/US4439790A/en
Publication of JPS57135573A publication Critical patent/JPS57135573A/en
Priority to US06/543,907 priority patent/US4554592A/en
Publication of JPS642313B2 publication Critical patent/JPS642313B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00684—Object of the detection
    • H04N1/00708—Size or dimensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00729—Detection means
    • H04N1/00734—Optical detectors
    • H04N1/00737—Optical detectors using the scanning elements as detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00742—Detection methods
    • H04N1/00748—Detecting edges, e.g. of a stationary sheet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00742—Detection methods
    • H04N1/0075—Detecting a change in reflectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00763—Action taken as a result of detection
    • H04N1/00774—Adjusting or controlling
    • H04N1/00779—Adjusting settings, e.g. mode, feeding rate or type of paper
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/38—Circuits or arrangements for blanking or otherwise eliminating unwanted parts of pictures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/333—Mode signalling or mode changing; Handshaking therefor
    • H04N2201/33307—Mode signalling or mode changing; Handshaking therefor of a particular mode
    • H04N2201/33314—Mode signalling or mode changing; Handshaking therefor of a particular mode of reading or reproducing mode
    • H04N2201/33321—Image or page size, e.g. A3, A4

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To prevent erroneous copying by discriminating the size of an original by detecting the side and positions of the original by arranging a solid scanning element, which reads the original, so that it performs a main scan from the outside of the original to the inside. CONSTITUTION:Solid scanning elements 1a and 1b which read an original 4 are arranged so that they perform main scans on the original 4 from the outside to the inside; and picture information scanned by the elements 1a and 1b is read by the clock of a clock generator 10 and stored in registers 14 and 15 temporarily. At this time, the clock is applied to a CPU11, whose CPU counters C1-C2 and L1-L2 count the position of the original. Further, the contents of the registers 14 and 15 are read out and stored in an image memory 18 by a control part 16. The size of the original 4 is discriminated by the elements 1a and 1b and counters C1-C2 and L1-L2 to control a laser diode 19 which inputs the output of the memory 18, preventing erroneous copying.
JP56021236A 1981-01-23 1981-02-16 Picture reader Granted JPS57135573A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56021236A JPS57135573A (en) 1981-02-16 1981-02-16 Picture reader
US06/339,282 US4439790A (en) 1981-01-23 1982-01-13 Image forming apparatus
US06/543,907 US4554592A (en) 1981-01-23 1983-10-20 Image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56021236A JPS57135573A (en) 1981-02-16 1981-02-16 Picture reader

Publications (2)

Publication Number Publication Date
JPS57135573A true JPS57135573A (en) 1982-08-21
JPS642313B2 JPS642313B2 (en) 1989-01-17

Family

ID=12049401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56021236A Granted JPS57135573A (en) 1981-01-23 1981-02-16 Picture reader

Country Status (1)

Country Link
JP (1) JPS57135573A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442793A1 (en) * 1983-11-25 1985-06-05 Canon K.K., Tokio/Tokyo IMAGE PROCESSING DEVICE
JPH0354931U (en) * 1989-10-04 1991-05-28
US5124810A (en) * 1989-05-26 1992-06-23 Ricoh Company, Ltd. Image reading apparatus
DE3448469C2 (en) * 1983-11-25 1994-10-20 Canon Kk Photocopier with selective zone copying facility
DE3448404C2 (en) * 1983-11-25 1995-08-31 Canon Kk Photocopier with selective zone copying facility
JPH08149364A (en) * 1994-11-22 1996-06-07 Nikon Corp Image input device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4736041U (en) * 1971-05-07 1972-12-21
JPS53148442A (en) * 1977-05-30 1978-12-25 Canon Inc Paper size detector
JPS5454626A (en) * 1977-10-11 1979-05-01 Ricoh Co Ltd Recognizing method for pattern on original document
JPS5459169A (en) * 1977-10-19 1979-05-12 Toshiba Corp Size measuring apparatus
JPS5473026A (en) * 1977-11-22 1979-06-12 Ricoh Co Ltd Copying machine
JPS5483438A (en) * 1977-12-15 1979-07-03 Ricoh Co Ltd Original detecting method
US4171744A (en) * 1977-05-17 1979-10-23 Pitney-Bowes, Inc. Document classifier
JPS5555658A (en) * 1978-09-22 1980-04-23 Canon Inc Copy unit
JPS5583368A (en) * 1978-12-20 1980-06-23 Toshiba Corp Facsimile scanning transmission system
JPS55166378A (en) * 1979-06-14 1980-12-25 Canon Inc Copy recorder

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4736041U (en) * 1971-05-07 1972-12-21
US4171744A (en) * 1977-05-17 1979-10-23 Pitney-Bowes, Inc. Document classifier
JPS53148442A (en) * 1977-05-30 1978-12-25 Canon Inc Paper size detector
JPS5454626A (en) * 1977-10-11 1979-05-01 Ricoh Co Ltd Recognizing method for pattern on original document
JPS5459169A (en) * 1977-10-19 1979-05-12 Toshiba Corp Size measuring apparatus
JPS5473026A (en) * 1977-11-22 1979-06-12 Ricoh Co Ltd Copying machine
JPS5483438A (en) * 1977-12-15 1979-07-03 Ricoh Co Ltd Original detecting method
JPS5555658A (en) * 1978-09-22 1980-04-23 Canon Inc Copy unit
JPS5583368A (en) * 1978-12-20 1980-06-23 Toshiba Corp Facsimile scanning transmission system
JPS55166378A (en) * 1979-06-14 1980-12-25 Canon Inc Copy recorder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442793A1 (en) * 1983-11-25 1985-06-05 Canon K.K., Tokio/Tokyo IMAGE PROCESSING DEVICE
DE3448469C2 (en) * 1983-11-25 1994-10-20 Canon Kk Photocopier with selective zone copying facility
DE3448404C2 (en) * 1983-11-25 1995-08-31 Canon Kk Photocopier with selective zone copying facility
DE3448540C2 (en) * 1983-11-25 1999-11-11 Canon Kk Image processing device
US5124810A (en) * 1989-05-26 1992-06-23 Ricoh Company, Ltd. Image reading apparatus
JPH0354931U (en) * 1989-10-04 1991-05-28
JPH08149364A (en) * 1994-11-22 1996-06-07 Nikon Corp Image input device

Also Published As

Publication number Publication date
JPS642313B2 (en) 1989-01-17

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