GB201908A - Improvements in damping mediums for copying-paper - Google Patents

Improvements in damping mediums for copying-paper

Info

Publication number
GB201908A
GB201908A GB19203/23A GB1920323A GB201908A GB 201908 A GB201908 A GB 201908A GB 19203/23 A GB19203/23 A GB 19203/23A GB 1920323 A GB1920323 A GB 1920323A GB 201908 A GB201908 A GB 201908A
Authority
GB
United Kingdom
Prior art keywords
copying
damping
paper
hygroscopic
chloride
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
GB19203/23A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB201908A publication Critical patent/GB201908A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/04—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using solvent-soluble dyestuffs on the master sheets, e.g. alcohol-soluble

Landscapes

  • Paper (AREA)
  • Winding Of Webs (AREA)

Abstract

201,908. May, F., and Ehrlich, J. Aug. 1, 1922, [Convention date]. No Patent granted (Sealing fee not paid). Copying documents.-A liquid for damping a copying-web prior to winding it into a roll for subsequent use, consists of an alcoholic solution of magnesium or calcium chloride or other hygroscopic metal salt; it is stated that the alcohol has the effect of readily dissolving the dye used in the ink and neutralizing the tendency of the chloride to render the dye insoluble while allowing. it to retain its hygroscopic qualities.
GB19203/23A 1922-08-01 1923-07-26 Improvements in damping mediums for copying-paper Expired GB201908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT201908X 1922-08-01

Publications (1)

Publication Number Publication Date
GB201908A true GB201908A (en) 1924-06-05

Family

ID=3669502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19203/23A Expired GB201908A (en) 1922-08-01 1923-07-26 Improvements in damping mediums for copying-paper

Country Status (3)

Country Link
DE (1) DE398564C (en)
FR (1) FR569134A (en)
GB (1) GB201908A (en)

Also Published As

Publication number Publication date
FR569134A (en) 1924-04-07
DE398564C (en) 1924-07-07

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