FR1138888A - Device for marking the edge of a film during unwinding - Google Patents

Device for marking the edge of a film during unwinding

Info

Publication number
FR1138888A
FR1138888A FR1138888DA FR1138888A FR 1138888 A FR1138888 A FR 1138888A FR 1138888D A FR1138888D A FR 1138888DA FR 1138888 A FR1138888 A FR 1138888A
Authority
FR
France
Prior art keywords
marking
edge
film during
during unwinding
unwinding
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
Other languages
French (fr)
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.)
Cellophane SA France
Original Assignee
Cellophane SA France
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 Cellophane SA France filed Critical Cellophane SA France
Application granted granted Critical
Publication of FR1138888A publication Critical patent/FR1138888A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/50—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves
    • B65H2557/516—Polarized light
FR1138888D 1955-11-04 1955-11-04 Device for marking the edge of a film during unwinding Expired FR1138888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1138888T 1955-11-04

Publications (1)

Publication Number Publication Date
FR1138888A true FR1138888A (en) 1957-06-20

Family

ID=9641420

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1138888D Expired FR1138888A (en) 1955-11-04 1955-11-04 Device for marking the edge of a film during unwinding

Country Status (1)

Country Link
FR (1) FR1138888A (en)

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