A cassette for sheet film has a cover and a bottom which are hinged to one another along a longitudinal edge of the cassette. Locking elements for locking the cover and bottom when the cassette is closed are arranged at the opposite longitudinal edge of the cassette. The cover and bottom cooperate to define a film compartment and the bottom has a rigid, flat wall for supporting a sheet of film. The cover has a window for exposing the film in the compartment and is further provided with a slot wh...

A stretched film having excellent printing and writing properties and mechanical strength is produced by stretching a film molded from a styrene-grafted polyolefin resin in at least one direction. The styrene-grafted polyolefin resin is produced by heating an aqueous suspension containing 100 parts by weight of polyolefin resin particles, from 10 to 400 parts by weight of a styrene monomer, and a free radical polymerization initiator in an amount of from 0.01 to 1 part by weight per 100 parts by...

Disclosed is a drafting film which comprises a plastic base provided on at least one surface with an adhesive layer and a pigmented coating system which comprises a pigmented layer and a top layer or a pigmented layer alone. In particular, the pigmented coating system comprises an acrylate or methacrylate copolymer comprising at least 50 percent by weight of an ester monomer, the alcohol component of which has a chain length of at least four carbon atoms, an antistatic agent comprising a polymer...

A film cassette includes a first cylindrical body forming a film supply section, a second cylindrical body forming a film take-up section, and a coupling section extending between the first and second cylindrical bodies and connected at both ends to the two cylindrical bodies thereby integrally coupling the cylindrical bodies. The coupling section has an outer face continuous with the outer peripheral surfaces of the first and second cylindrical bodies. First cylindrical body includes a ridge pr...

An overwrapping film wherein a plastic base film is coated with a plastic material to form an anchor coat layer, which is, in turn, further coated with ink to form an ink layer thereon, and a metal layer is then deposited on the ink layer through the process of vacuum evaporation. The plastic base film is thermally contracted to produce a tightly-packed configuration, while the evaporated metal layer furnishes a metallic gloss to a printed display pattern provided by the ink layer.

A camera having a film counter for indicating the number of unexposed film units remaining in the camera. The film counter includes a rotatably mounted drum having a single row of teeth by which the drum may be sequentially indexed in a first direction subsequent to the exposure of a film unit. A pawl having first and second working surfaces limits rotation of the drum in a second direction thereby maintaining the drum in its newly indexed position. By removing one of the teeth, the second worki...

Apparatus for processing individual rolls of self-developing type transparency film. The apparatus includes a spool having a first post, to which the leaders of a length of photographically exposed film and a length of flexible sheet material are adapted to be attached, and a second post, to which only the leader of the film is to be attached. The spool is adapted to be rotated so as to wind upon the spool a laminate comprised of the film, the sheet material, and a layer of processing liquid san...

A thermoplastic film having a permanently embossed design or geometric shape built therein for controlling the coefficient of friction of sheets of the film when placed adjacent each other. The film has a relatively smooth or female surface on one side and a relatively rough or male surface on the other side. By varying the relationship of one sheet of film placed adjacent another sheet of film or a surface area of the same film, a desired level of coefficient of friction can be obtained. A rela...

A film cassette includes a cassette main body with a film supply portion and a film take-up portion, a spool rotatably arranged at said film take-up portion of the cassette main body, and bearings arranged at the film take-up portion for rotatably supporting the spool. The spool comprises an outer cylinder around which a film is wound, an inner cylinder which is slidable in an axial direction relative to the outer cylinder and which is rotatable with the outer cylinder, and a compression spring,...

A shaped polyimide article is disclosed having finely divided barium sulfate as an additive which lowers the limiting oxygen index in combustion and substantially eliminates ash as a combustion product.