GB1397987A - Document scanner - Google Patents

Document scanner

Info

Publication number
GB1397987A
GB1397987A GB3015272A GB3015272A GB1397987A GB 1397987 A GB1397987 A GB 1397987A GB 3015272 A GB3015272 A GB 3015272A GB 3015272 A GB3015272 A GB 3015272A GB 1397987 A GB1397987 A GB 1397987A
Authority
GB
United Kingdom
Prior art keywords
mirror
photodetector
scanning
document
line
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.)
Expired
Application number
GB3015272A
Other languages
English (en)
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.)
Ball Computer Products Inc
Original Assignee
Ball Computer Products 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 Ball Computer Products Inc filed Critical Ball Computer Products Inc
Publication of GB1397987A publication Critical patent/GB1397987A/en
Expired 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/0408—Different densities of dots per unit length
    • H04N1/0411—Different densities of dots per unit length in the main scanning direction
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/0408—Different densities of dots per unit length
    • H04N1/0414—Different densities of dots per unit length in the sub scanning direction
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/042—Details of the method used
    • H04N1/0443—Varying the scanning velocity or position
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0402—Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards
    • H04N1/042—Details of the method used
    • H04N1/0455—Details of the method used using a single set of scanning elements, e.g. the whole of and a part of an array respectively for different formats
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/047—Detection, control or error compensation of scanning velocity or position
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1026—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components using a belt or cable
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1039—Movement of the main scanning components
    • H04N1/1052—Movement of the main scanning components of a mirror
    • H04N1/1056—Movement of the main scanning components of a mirror of two or more separate mirror arrangements
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/113—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors
    • H04N1/1135—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors for the main-scan only
    • 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
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02406—Arrangements for positioning elements within a head
    • H04N2201/02416—Rotational positioning, i.e. with respect to an axis
    • 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
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02406—Arrangements for positioning elements within a head
    • H04N2201/02439—Positioning method
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/0471—Detection of scanning velocity or position using dedicated detectors
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04715—Detection of scanning velocity or position by detecting marks or the like, e.g. slits
    • H04N2201/04727—Detection of scanning velocity or position by detecting marks or the like, e.g. slits on a linear encoder
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04729—Detection of scanning velocity or position in the main-scan direction
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04731—Detection of scanning velocity or position in the sub-scan direction
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04734—Detecting at frequent intervals, e.g. once per line for sub-scan control
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04744—Detection of scanning velocity or position by detecting the scanned beam or a reference beam
    • H04N2201/04746—Detection of scanning velocity or position by detecting the scanned beam or a reference beam after modulation by a grating, mask or the like
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04755—Control or error compensation of scanning position or velocity by controlling the position or movement of a scanning element or carriage, e.g. of a polygonal mirror, of a drive motor
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04791—Control or error compensation of scanning position or velocity in the sub-scan direction
    • 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
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04794—Varying the control or compensation during the scan, e.g. using continuous feedback or from line to line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)
GB3015272A 1971-06-28 1972-06-27 Document scanner Expired GB1397987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15734871A 1971-06-28 1971-06-28

Publications (1)

Publication Number Publication Date
GB1397987A true GB1397987A (en) 1975-06-18

Family

ID=22563344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3015272A Expired GB1397987A (en) 1971-06-28 1972-06-27 Document scanner

Country Status (4)

Country Link
US (1) US3752558A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2226413A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2143774A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1397987A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817641A1 (de) * 1977-04-21 1978-10-26 Mead Corp Tintenstrahldrucker
GB2318245A (en) * 1996-10-10 1998-04-15 Primax Electronics Ltd Transmission mechanism of scanning device
GB2336053A (en) * 1998-03-20 1999-10-06 Silitek Corp Platen type scanner driving mechanism
GB2336052A (en) * 1998-03-20 1999-10-06 Silitek Corp Platen type scanner driving mechanism

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025154A (en) * 1973-09-22 1977-05-24 Olympus Optical Co., Ltd. Optical scanning system
US3867569A (en) * 1974-02-25 1975-02-18 Bell Telephone Labor Inc Compact flatbed page scanner
DE2518615C2 (de) * 1975-04-26 1984-06-28 Agfa-Gevaert Ag, 5090 Leverkusen Kombiniertes Faksimile- und Kopiergerät
FR2312149A1 (fr) * 1975-05-23 1976-12-17 Thomson Csf Dispositif de projection d'images de reperes sur une surface photosensible et telecinema muni d'un tel dispositif
US4050780A (en) * 1976-11-08 1977-09-27 Northern Telecom Limited Optical system for a scanning apparatus with reflector pairs at each end
US4266252A (en) * 1979-09-12 1981-05-05 The Mead Corporation Lens system for document scanning
US4506301A (en) * 1979-10-12 1985-03-19 Xerox Corporation Multiple mode raster scanner
DE3014433A1 (de) * 1980-04-15 1981-10-22 Siemens AG, 1000 Berlin und 8000 München Anordnung zum abtasten von mit graphischen mustern versehenen vorlagen
NL8004430A (nl) * 1980-08-04 1982-03-01 Oce Nederland Bv Transportinrichting.
US4397521A (en) * 1980-09-29 1983-08-09 Xerox Corporation Double pass optical system for raster scanners
US4355860A (en) * 1980-09-29 1982-10-26 Xerox Corporation Double pass scanning system
US4346984A (en) * 1980-10-20 1982-08-31 Xerox Corporation Document scanner
US4486786A (en) * 1981-09-08 1984-12-04 Canon Kabushiki Kaisha Original reading device
US4558313A (en) * 1981-12-31 1985-12-10 International Business Machines Corporation Indicator to data processing interface
JPS5968728A (ja) * 1982-10-12 1984-04-18 Canon Inc 原稿検出装置
US4737748A (en) * 1984-07-20 1988-04-12 Minolta Camera Kabushiki Kaisha Copying machine with selective illuminations
US4630276A (en) * 1984-10-09 1986-12-16 Aeronca Electronics, Inc. Compact laser scanning system
US4634267A (en) * 1985-02-14 1987-01-06 International Business Machines Corporation Photocopier scanning apparatus and method for adjustment
US4860060A (en) * 1988-04-08 1989-08-22 Tameran, Inc. Microfiche printing system and method
US5191447A (en) * 1990-12-07 1993-03-02 Intergraph Corporation Scanning beam control system with translated reference scale
US5287147A (en) * 1991-01-25 1994-02-15 Canon Kabushiki Kaisha Original scanning apparatus with fixed light source
US5255116A (en) * 1991-02-18 1993-10-19 Canon Kabushiki Kaisha Original scanning apparatus
US5434370A (en) * 1993-11-05 1995-07-18 Microfield Graphics, Inc. Marking system with pen-up/pen-down tracking
US5585605A (en) * 1993-11-05 1996-12-17 Microfield Graphics, Inc. Optical-scanning system employing laser and laser safety control
US5583323A (en) * 1993-11-05 1996-12-10 Microfield Graphics, Inc. Calibration of graphic data-acquisition tracking system
US5506663A (en) * 1994-11-07 1996-04-09 Xerox Corporation Scanner mounting apparatus for an electrostatographic printing machine
US5634378A (en) * 1995-03-01 1997-06-03 Virginia Corporation Of Richmond, Inc. Portable scanning frame
US5532846A (en) * 1995-06-29 1996-07-02 Agfa Division, Bayer Corporation Method and apparatus for positioning a focusing lens
JP2001007996A (ja) * 1999-06-18 2001-01-12 Nec Corp 走査往復台
TW424401B (en) * 1999-08-12 2001-03-01 Avision Inc Double path optical mechanism of incremental pulley ratio type
ITMI20020104A1 (it) * 2002-01-22 2003-07-22 Milano Politecnico Sistema di posizionamento per acquisizione di dati
US7843611B2 (en) * 2007-07-18 2010-11-30 Kuwait University High speed flatbed scanner comprising digital image-capture module with two-dimensional optical image photo-sensor or digital camera

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478555A (en) * 1947-11-28 1949-08-09 Eastman Kodak Co Optical scanning device
US3346739A (en) * 1964-05-18 1967-10-10 Gen Precision Systems Inc Photosensitive character reading apparatus
US3594080A (en) * 1969-01-03 1971-07-20 Allied Res Ass Inc Method and apparatus for digital color printing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817641A1 (de) * 1977-04-21 1978-10-26 Mead Corp Tintenstrahldrucker
GB2318245A (en) * 1996-10-10 1998-04-15 Primax Electronics Ltd Transmission mechanism of scanning device
GB2336053A (en) * 1998-03-20 1999-10-06 Silitek Corp Platen type scanner driving mechanism
GB2336052A (en) * 1998-03-20 1999-10-06 Silitek Corp Platen type scanner driving mechanism
GB2336053B (en) * 1998-03-20 2002-11-13 Silitek Corp Platen type scanner driving mechanism
GB2336052B (en) * 1998-03-20 2003-02-12 Silitek Corp Platen type scanner driving mechanism

Also Published As

Publication number Publication date
US3752558A (en) 1973-08-14
DE2226413A1 (de) 1973-01-18
FR2143774A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-02-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee