GB704152A - Improvements in or relating to facsimile telegraph apparatus - Google Patents

Improvements in or relating to facsimile telegraph apparatus

Info

Publication number
GB704152A
GB704152A GB2670050A GB2670050A GB704152A GB 704152 A GB704152 A GB 704152A GB 2670050 A GB2670050 A GB 2670050A GB 2670050 A GB2670050 A GB 2670050A GB 704152 A GB704152 A GB 704152A
Authority
GB
United Kingdom
Prior art keywords
plate
sheet
drum
transparent
edge
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
GB2670050A
Inventor
Albert Wilcock
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.)
Postmaster General
Original Assignee
Postmaster General
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 Postmaster General filed Critical Postmaster General
Priority to GB2670050A priority Critical patent/GB704152A/en
Publication of GB704152A publication Critical patent/GB704152A/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
    • 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
    • H04N1/0804—Holding methods
    • H04N1/0821—Holding substantially the whole of the sheet, e.g. with a retaining 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
    • H04N1/04—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
    • H04N1/0834—Flexible holding means, e.g. envelopes or sheaths
    • 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
    • H04N1/0843—Pins or the like
    • 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
    • H04N1/0865—Single holding means holding both ends of a sheet

Abstract

704,152. Copying-telegraph transmitters. POSTMASTER GENERAL. Nov. 16, 1951 [Nov. 1, 1950], No. 26700/51. Class 40 (3) In facsimile apparatus employing a cylindrical drum, a sheet of transparent material is wrapped around the drums to press a sheet bearing the matter to be transmitted into close contact with the outer surface of the drum, one edge of the transparent sheet being attached to the drum, whilst the opposite edge is releasably attached to means capable of adjustment in such manner that the transparent sheet when wrapped around the drum is placed under circumferential tension. The sheet 1 of transparent material, such as celluloid, has at each end a pressed metal strip 2 formed with recesses 4, 5 and intervening turned-over portions. One edge of the sheet is anchored to the drum by means of a hinge pin 11 passing through the turned-over portions and tunnel portions 6 of a plate 7 secured to ledges 9 of a thick plate 10 fixed to the inner surface of the drum. The non-recessed portions of the edge of the sheet 2 engage tongues 14 pressed up from the plate 7. A recess 19 in the plate 10 houses a floating plate 18, Figs. 4, 5 carrying pins 15 engaging inclined slots 21 in a longitudinally movable plate 20 and guided by slots in the plate 7. For the disengagement of the transparent sheet, the plate 20 is moved to the right against the action of springs 23 and is retained by the shouldered portion 29 of a spring latch 26. After the insertion of the sheet carrying the matter to be transmitted to slots 17 in the free end of the transparent sheet are engaged with the pins 15 and the release of the latch 26 allows the plate 20 to move to the left, thus displacing laterally the plate 18 and moving the pins 15 in the circumferential direction to bind the transparent sheet 1 into close contact with the drum 3.
GB2670050A 1950-11-01 1950-11-01 Improvements in or relating to facsimile telegraph apparatus Expired GB704152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2670050A GB704152A (en) 1950-11-01 1950-11-01 Improvements in or relating to facsimile telegraph apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2670050A GB704152A (en) 1950-11-01 1950-11-01 Improvements in or relating to facsimile telegraph apparatus

Publications (1)

Publication Number Publication Date
GB704152A true GB704152A (en) 1954-02-17

Family

ID=31198379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2670050A Expired GB704152A (en) 1950-11-01 1950-11-01 Improvements in or relating to facsimile telegraph apparatus

Country Status (1)

Country Link
GB (1) GB704152A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915357A (en) * 1955-01-24 1959-12-01 Ampex Magnetic tape apparatus
US3151554A (en) * 1961-09-21 1964-10-06 Fairchild Camera Instr Co Perforated sheet supporting arrangement
EP0204307A2 (en) * 1985-06-03 1986-12-10 Dainippon Screen Mfg. Co., Ltd. Film end holding device
WO1990005068A1 (en) * 1988-11-02 1990-05-17 Polaroid Corporation Dynamically stable sheet clamping system for high speed sheet handling drums
EP0642254A1 (en) * 1993-09-06 1995-03-08 Dainippon Screen Mfg. Co., Ltd. Sheet fixing device for a drum of a scanner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915357A (en) * 1955-01-24 1959-12-01 Ampex Magnetic tape apparatus
US3151554A (en) * 1961-09-21 1964-10-06 Fairchild Camera Instr Co Perforated sheet supporting arrangement
EP0204307A2 (en) * 1985-06-03 1986-12-10 Dainippon Screen Mfg. Co., Ltd. Film end holding device
EP0204307A3 (en) * 1985-06-03 1989-02-22 Dainippon Screen Mfg. Co., Ltd. Film end holding device
WO1990005068A1 (en) * 1988-11-02 1990-05-17 Polaroid Corporation Dynamically stable sheet clamping system for high speed sheet handling drums
EP0642254A1 (en) * 1993-09-06 1995-03-08 Dainippon Screen Mfg. Co., Ltd. Sheet fixing device for a drum of a scanner
US5473407A (en) * 1993-09-06 1995-12-05 Dainippon Screen Mfg. Co., Ltd. Sheet fixing device for a drum of a scanner

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