Photo-film unit masking material and photo-film unit
The present invention provides a masking material and a photo-film unit which exhibit writability for any of the presently used writing materials including a ballpoint pen, an oily pen, an aqueous pen, a fountain pen and a pencil, are water-resistant, are free from blocking, and permit complete eras...
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| Hauptverfasser: | , |
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention provides a masking material and a photo-film unit which exhibit writability for any of the presently used writing materials including a ballpoint pen, an oily pen, an aqueous pen, a fountain pen and a pencil, are water-resistant, are free from blocking, and permit complete erasion of pencil writing with a rubber. A writability imparting layer comprising vinylpyrrolidone-vinyl acetate copolymer, an acrylic resin having a hydrophilic group, and powder is provided on a support film of a photo-film unit or a masking material. |
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