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
Inventor
Denton Abel Charles
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.)
Agfa Gevaert NV
Original Assignee
Aktiengesellschaft fuer Anilinfabrikation GmbH
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Filing date
Publication date
Application filed by Aktiengesellschaft fuer Anilinfabrikation GmbHfiledCriticalAktiengesellschaft fuer Anilinfabrikation GmbH
Application grantedgrantedCritical
Publication of GB190123299ApublicationCriticalpatent/GB190123299A/en
23,299. Abel, C. D., [Akt.-Ges. f³r Anilin- Fabrikation]. Nov. 18. Roller slides.-Relates to a wrapper or covering for roll films consisting of a strip of paper impermeable to light, having its sides differently coloured. As an example, paper such as is ordinarily used for photographic purposes is passed at one side only through an aqueous solution of new-coccine ; after drying it is passed in the same way through a solution of methylene blue, and is then dried again. The marks or figures are applied to the white surface. Various other dyes and methods of application are mentioned in the Specification.
GB190123299D1901-11-181901-11-18Improvements in Photographic Roll-films.
ExpiredGB190123299A
(en)