Abstract: Rolls easy to be produced are provided. The invention provides a roll which is composed of a main tape cylindrically wound up. The main tape is provided with a first and second holes, respectively, in its winding terminating position and winding initiating position. First and second adhesive tapes are stuck over the holes, respectively. In the bottoms of the first and second holes, adhesive layers of the first and second adhesive tapes are exposed. Therefore, the main tape is stuck on a core at its winding initiating position and on the roll itself at its winding terminating position. Information may be printed on a surface of the first adhesive tape.

Abstract: For instance, when a washing-free yet low-residue type of flux is coated on a solder resist film, soldering can be carried out while no solder balls remain on a circuit substrate.A photosensitive resin composition comprises a photopolymerizable and photosensitive resin having at least one of a carboxyl group and an onium group, a photopolymerizable reactive diluent, a photopolymerization initiator, a thermosetting component, and an inorganic powder having an average particle size of 2 .mu.m to 20 .mu.m. A cured film thereof is used as a solder resist film for circuit substrate fabrication.A washing-free yet low-residue type of flux is so uniformly coated on the solder resist film that soldering can be carried out in the absence of any solder ball.

Abstract: A method of manufacturing a ribbon roll by joining a splice tape to a ribbon, is capable of accomplishing automatization to deal with splice tapes different in length and kind. This method comprises a ribbon supply process, an edit process for joining first and second splice tapes to the ribbon and a take-up process for rolling up the ribbon joined to the first and second splice tapes. In the edit process, the first and second splice tapes are joined by an adhesive tape sticking section and its feeding quantity is adjusted by an accumulator. On the other hand, the ribbon is drawn out by a given length from a supply unit and cut. A rotating bed 42 supporting the cut ribbon is rotated so that the end of the cut ribbon comes into an opposed relation to the end of the first or second splice tape. In this state, the ribbon and the splice tape are joined to each other.

Abstract: For instance, when a washing-free yet low-residue type of flux is coated on a solder resist film, soldering can be carried out while no solder balls remain on a circuit substrate.A photosensitive resin composition comprises a photopolymerizable and photosensitive resin having at least one of a carboxyl group and an onium group, a photopolymerizable reactive diluent, a photopolymerization initiator, a thermosetting component, and an inorganic powder having an average particle size of 2 .mu.m to 20 .mu.m. A cured film thereof is used as a solder resist film for circuit substrate fabrication.A washing-free yet low-residue type of flux is so uniformly coated on the solder resist film that soldering can be carried out in the absence of any solder ball.