Abstract: This invention provides a sheet of affixing labels comprising a label sheet which has a layer of adhesives coated on the back surface of a sheet of paper and a releasing sheet, which has a layer of clay coated on the front surface of a sheet of paper, said layer of clay being further coated with a layer of releasing agents of silicon. The releasing sheet preferably has the back surface coated with a layer of clay. The sheet of affixing labels is prevented from being curled, waved and broken, when used by means of a copying machine, laser printer, etc. Also, the sheet of affixing labels is prevented from the label sheet being fallen from the releasing sheet, when used by means of a copying machine, laser printer in which toners are to be fixed at high temperature, and in which the sheet is to be reciprocated and turned round.

Abstract: A copying sheet comprising a printing film made of a synthetic resin film and a base film made of a foamed polyester resin film releasably adhering to the printing film, the printing film having formed on the front surface thereof a matting material layer and an antistatic agent layer, the matting material layer including silica having the average particle size of less than 5 microns and having a thickness of 0.5 to 10 microns for the purpose of fixing the powders of towner, the base film having formed on the back surface thereof a matting material layer and an antistatic agent layer, the matting material layer including silica having the average particle size of 3 to 10 microns and having the thickness of 7 to 15 microns for the purpose of preventing copying sheets from being sent out of a copier as two or more sheeting being superposed.

Abstract: A processed paper for documents protected from being photographically and electrostatically reproduced comprises a paper substrate having a front surface, and a colored ink layer and a silvery ink layer coated over the front surface of the paper substrate, the silvery ink layer having a pattern formed thereon to cause photographic and electrostatic reproductions of information recorded on the processed paper to be illegible due to irregular reflections of light from the pattern on the silvery ink layer.

Abstract: A composite film for bar code labels comprising first and second heat-resisting non-water-absorbing synthetic resin films. On the first film of the composite film bar code can be reproduced by means of a high speed dry process electrostatic copier.

Abstract: A composite film for protecting documents from being reproduced comprising a colored transparent film and a transparent adhesive layer applied to the back of the transparent film.