GB1269174A - Magnetic holding drum - Google Patents

Magnetic holding drum

Info

Publication number
GB1269174A
GB1269174A GB47446/70A GB4744670A GB1269174A GB 1269174 A GB1269174 A GB 1269174A GB 47446/70 A GB47446/70 A GB 47446/70A GB 4744670 A GB4744670 A GB 4744670A GB 1269174 A GB1269174 A GB 1269174A
Authority
GB
United Kingdom
Prior art keywords
drum
bar
magnetic strips
paper
sheet
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
GB47446/70A
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.)
ELECTRONIC TRANSMISSION SYSTEM
Original Assignee
ELECTRONIC TRANSMISSION SYSTEM
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 ELECTRONIC TRANSMISSION SYSTEM filed Critical ELECTRONIC TRANSMISSION SYSTEM
Publication of GB1269174A publication Critical patent/GB1269174A/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
    • H04N1/06—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 cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/08—Mechanisms for mounting or holding the sheet around the drum
    • H04N1/0804—Holding methods
    • H04N1/0813—Holding sides of the sheet which are substantially parallel to the drum axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0268—Magnetic cylinders
    • 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
    • H04N1/06—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 cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/08—Mechanisms for mounting or holding the sheet around the drum
    • 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
    • H04N1/06—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 cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/08—Mechanisms for mounting or holding the sheet around the drum
    • H04N1/083—Holding means
    • H04N1/0839—Mechanical clamps, i.e. means for holding the sheet against the drum by mechanical force
    • 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
    • H04N1/06—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 cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/08—Mechanisms for mounting or holding the sheet around the drum
    • H04N1/083—Holding means
    • H04N1/0847—Magnetic means

Abstract

1,269,174. Facsimile apparatus. ELECTRONIC TRANSMISSION SYSTEMS Inc. 6 Oct., 1970 [29 Oct., 1969], No. 47446/70. Heading H4F. A drum 10 for carrying a sheet of paper 14 to be optically scanned for facsimile transmission comprises an aluminium cylinder with metal end pieces 12, 17 mounted on a shaft 11. Magnetic strips are embedded in the cylindrical surface of the drum and a clamping bar 13 is rotatably mounted between the end faces so as to clamp the leading edge of a sheet of paper 14 between the bar 13 and drum by the attraction of one of the magnetic strips. A sliding bar 15 slides in annular grooves in the end pieces 12, 17 and clamps the other end of the sheet of paper, the bar 15 being held in position by the attraction of another of the magnetic strips. The clamping bar 13 and sliding bar 15 may be of a paramagnetic material, e.g. steel or nickel, and the magnetic strips may be formed axially of the drum or helically around it, and may be either permanent magnets or electromagnets.
GB47446/70A 1969-10-29 1970-10-06 Magnetic holding drum Expired GB1269174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87223869A 1969-10-29 1969-10-29

Publications (1)

Publication Number Publication Date
GB1269174A true GB1269174A (en) 1972-04-06

Family

ID=25359134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47446/70A Expired GB1269174A (en) 1969-10-29 1970-10-06 Magnetic holding drum

Country Status (2)

Country Link
US (1) US3581257A (en)
GB (1) GB1269174A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138102A (en) * 1977-03-30 1979-02-06 Xerox Corporation Automatic document processing device
JPS597945A (en) * 1982-07-06 1984-01-17 Fuji Photo Film Co Ltd Method and device for picture reading with radiant ray
US5245358A (en) * 1991-06-17 1993-09-14 Tektronix, Inc. Substrate support for use in a thermal phase change ink printing apparatus
EP0545862B1 (en) * 1991-12-03 1998-04-22 Crown Cork & Seal Company, Inc. Method and apparatus for printing multicolored container body blanks in a single pass
US5949463A (en) * 1996-05-07 1999-09-07 Eastman Kodak Company Image processor for processing various sizes of a processing medium
US6457410B1 (en) * 2000-07-07 2002-10-01 Presstek, Inc. Method and apparatus for magnetically clamping printing plates
US6688227B2 (en) 2002-04-01 2004-02-10 Presstek, Inc. Magnetic plate-retention system and method of securing recording medium to rotatable support
WO2005000585A1 (en) * 2003-06-30 2005-01-06 Kba-Giori S.A. Printing machine
US20050120898A1 (en) * 2003-12-05 2005-06-09 Presstek, Inc. Magnetic plate retention
US20080196614A1 (en) * 2007-02-20 2008-08-21 Jorg Koberg Clamping and releasing flexible plates to and from an imaging cylinder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039389A (en) * 1957-12-21 1962-06-19 Deutsche Edelstahlwerke Ag Printing cylinder and a method of producing the same
US3353481A (en) * 1962-06-08 1967-11-21 Potter Instrument Co Inc High speed printer drum with print plate mounting means

Also Published As

Publication number Publication date
US3581257A (en) 1971-05-25

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