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GB1387434A - Facsimile printing systems - Google Patents

Facsimile printing systems

Info

Publication number
GB1387434A
GB1387434A GB1364372A GB1364372A GB1387434A GB 1387434 A GB1387434 A GB 1387434A GB 1364372 A GB1364372 A GB 1364372A GB 1364372 A GB1364372 A GB 1364372A GB 1387434 A GB1387434 A GB 1387434A
Authority
GB
United Kingdom
Prior art keywords
scanning
pulses
channel
bar
document
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
GB1364372A
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.)
Potter Instrument Co Inc
Original Assignee
Potter Instrument Co 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 Potter Instrument Co Inc filed Critical Potter Instrument Co Inc
Publication of GB1387434A publication Critical patent/GB1387434A/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
    • H04N1/19—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 multi-element arrays
    • H04N1/191—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 multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • 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
    • H04N1/12—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 the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
    • H04N1/16—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 the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning using a rotating helical element
    • 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
    • H04N1/19—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 multi-element arrays
    • H04N1/191—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 multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/1911—Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths
    • 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
    • H04N1/19—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 multi-element arrays
    • H04N1/191—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 multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/1911—Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths
    • H04N1/1912—Scanning main scanning lines which are spaced apart from one another in the sub-scanning direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

1387434 Copying by scanning POTTER INSTRUMENT CO Inc 23 March 1972 [23 April 1971] 13643/72 Heading H4F A facsimile scanner 13 comprises a reciprocal scanning bar carrying a plurality (as described, twelve) of photo-cells aligned parallel to the line scanning direction, the printer 11 having a corresponding number of hammer blades 21 co-operating with a helical bar 19 on a rotatable drum 15, each photo-cell being connected via a respective AND gate 33 and OR gate 27 to one of the hammer firing circuits 29. A second reciprocal scanning bar having a like plurality of photo-cells may be included, each scanning bar scanning alternate lines of a document to be copied and being driven by a respective cam so as to move linearly during scanning. A transducer 35 viewing a tone wheel 37 rotated with drum 15 produces an output pulse on channel 41 for each revolution of drum 15 and an output pulse on channel 38 each time the intersection between each blade 21 and bar 19 passes through a dot print position. The output pulses on channels 39 and 41 are fed to scanner 13 to synchronize its operation, the pulses on channel 39 being fed to a frequency comparator (131, Fig. 10, not shown) and the pulses on channel 41 being fed to a phase comparator (133), the frequency and phase comparators also receiving respective signals from transducers viewing tone wheels rotated by the motor driving the scanning bars, the motor speed being controlled by the outputs of the frequency and phase comparators. The document being copied and the printed sheet may both be moved continuously in which case the scanning bars move in a skewed manner so as to scan, on the document, at right angles to the direction of document feed, the hammer blades 21 being similarly skewed. The pulses on channel 39 are also supplied to AND gates 33 so that printing only takes place at dot print position. Non-linear amplifiers (110, Fig. 11, not shown) may be included between scanner 13 and printer 11. A circuit 25, synchronized by the pulses on channels 39 and 41 may produce signals to print alphanumeric characters in addition to the facsimile copy.
GB1364372A 1971-04-23 1972-03-23 Facsimile printing systems Expired GB1387434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00136950A US3830975A (en) 1971-04-23 1971-04-23 Facsimile dot printing system with stew correction

Publications (1)

Publication Number Publication Date
GB1387434A true GB1387434A (en) 1975-03-19

Family

ID=22475161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1364372A Expired GB1387434A (en) 1971-04-23 1972-03-23 Facsimile printing systems

Country Status (5)

Country Link
US (1) US3830975A (en)
CA (1) CA964201A (en)
DE (1) DE2219442A1 (en)
FR (1) FR2133739A1 (en)
GB (1) GB1387434A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143012A (en) * 1978-04-28 1979-11-07 Canon Inc Information reader
US4278019A (en) * 1979-07-16 1981-07-14 International Business Machines Corporation All-points addressable dot printer
JPS5887652A (en) * 1981-11-19 1983-05-25 Ricoh Co Ltd Image processing device
JPS5961277A (en) * 1982-09-29 1984-04-07 Toshiba Corp Forming device of pattern
DE4218506A1 (en) * 1992-06-04 1993-12-09 Josef Kirmeier Copier
US5640207A (en) * 1993-05-19 1997-06-17 Rahmouni; Gilbert Camera for high-speed imaging
FR2774243B1 (en) * 1998-01-23 2000-02-25 Sagem IMAGE ANALYSIS METHOD AND IMAGE ANALYSIS DEVICE FOR IMPLEMENTING THE METHOD

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529978A (en) * 1948-04-22 1950-11-14 Eastman Kodak Co Facsimile copying apparatus
US2618702A (en) * 1950-06-23 1952-11-18 Eastman Kodak Co Variable underlap drum facsimile transmitting apparatus
US2619533A (en) * 1950-07-03 1952-11-25 Thomas I Ress Permutation code printing receiver
US2930847A (en) * 1956-11-01 1960-03-29 Rca Corp Printer
US2953638A (en) * 1957-12-30 1960-09-20 Bell Telephone Labor Inc Multiple beam scanning system
US3174427A (en) * 1961-12-27 1965-03-23 Ibm Proportional space matrix printer
GB978173A (en) * 1962-07-04 1964-12-16 Muirhead & Co Ltd Improvements in or relating to facsimile telegraph apparatus
US3286029A (en) * 1962-12-03 1966-11-15 Rca Corp Information translating apparatus
US3324240A (en) * 1963-05-06 1967-06-06 Scm Corp Telegraphic progressive printing system
US3524022A (en) * 1966-10-03 1970-08-11 Xerox Corp Electro-optical display system
US3409904A (en) * 1966-12-20 1968-11-05 Motorola Inc Printer having piezoelectric crystal printing means
US3512158A (en) * 1968-05-02 1970-05-12 Bunker Ramo Infra-red printer
GB1221366A (en) * 1968-08-15 1971-02-03 Standard Telephones Cables Ltd Character generation system
US3599227A (en) * 1968-11-19 1971-08-10 Earl H Cobb Electro-arc printing system

Also Published As

Publication number Publication date
FR2133739A1 (en) 1972-12-01
DE2219442A1 (en) 1972-11-16
CA964201A (en) 1975-03-11
US3830975A (en) 1974-08-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees