Abstract: A desoldering wick formed of tin-coated copper strands braided together. The wick is coated with a flux solution which includes a coloring agent such as a dye. In use, the extent to which molten solder has traveled along the wick is visually indicated by a color demarcation line between the portion of the wick still having colored flux thereon and the portion of the wick from which the colored flux has been discharged. The latter portion can then be cut off and discarded.

Abstract: Method and media for producing a vesicular image suitable for use in the recordation of microform information on an add-on basis. A vesicular film (imaging film) is exposed to actinic radiation to form a latent nitrogen gas image therein. The exposed vesicular imaging film, while still containing the latent image is contacted with a sensitizer-free vesicular film vehicle (receiving film). Sufficient heat and pressure are applied to cause an image-forming amount of nitrogen gas to be transferred from the imaging film to the receiving film. Conditions are selected so that vesiculation does not occur in either the imaging or receiving film up to and including the time of gas transfer. Thereafter, the receiving film is subjected to sufficient heat to develop a vesicular image from the transferred gas.