Patent · US Expired

Apparatus for use in coding spliced film

US4659199A · kind A · utility

2Cited by
3References
7Claims
0Family size

Inventors

Key dates

Filing dateNov 26, 1985
Grant dateApr 21, 1987
Priority date—
Expiry dateNov 26, 2005

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03D15/043
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Apparatus for marking the edge of a film particularly for identifying head and tail sections of film strips joined by a splice comprising a holder with a channel-like film guide in which the film may be inserted for longitudinal movement and a hole for a pen-type applicator positioned so that as the film is moved lengthwise through the guide one edge of the film is wiped across the tip of the applicator so that a continuous ink or dye mark is applied to the film edge which appears as a ring on the side of the film when it is wound onto a reel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.