Fuji Photo Film Company, Limited

Fujifilm Corporation

Nobuo Sugiyama

Kazunori Mizuno

Mototada Yasui

Tomoyuki Takahashi

Eiichi Okutsu

Yoshio Hara

Shoji Ishiguro

Tetsuya Takatori

Haruhiko Iwano

Akihiro Sanda

Hidetoshi Kawasaki

Akira Tomita

Yoo Iijima

Takashi Komine

Hiroyuki Kurabayashi

Koichi Hatakeyama

Hironori Sasaki

Mitsunori Sugiyama

Masaharu Tabuchi

Yukio Seto

Naoko Yamashita

Yasuko Sano

Katsumi Hosoya

Naoki Yoshikawa

Hikoharu Hara

A band-like matter fastening seal for fixing a wound end of a band-like matter that is wound in a roll form to the body of said band-like matter, includes: a first attaching part adhered to said end of the band-like matter; a second attaching part having an attaching side adhered to the body of the matter in order to fasten the end to the body of the matter; and a handle part extended from the second attaching part, the attaching side being exposed when the attaching side is lifted from a masking side covering the attaching side, wherein the handle part rises up along the tangent line of the roll when a portion of the band-like matter fastening seal in the vicinity of the handle part is curved.

Band-like matter fastening seal, roll photo film, apparatus and methods for manufacturing a band-like matter unit

The invention relates to a photographic roll film such as Brownie film, particularly to a sealing tape, used for the photographic roll film, which can seal a roll of film easily and reliably without the need for licking adhesive on a sealing tape as in a conventional one. The sealing tape includes a bonding portion and a release portion which are made of a single tape base. The bonding portion has a bond layer coated on the tape base for securing the sealing tape to a surface of light-shielding paper, the release portion made of a folded-over portion formed by folding over the tape base includes a tacky layer and a release layer inside the folded-over portion which are coated on the tape base separately and directly face each other and an end of the tape base is secured to the end portion of the bond layer.

Photographic roll film having sealing tape

An instant photo film pack includes a pack case for containing a stack of ten self-processing photo film units. An outlet slit is formed in the pack case, for exiting an exposed one of the photo film units therethrough. A light-shielding flap has a substantially quadrilateral shape, for closing the outlet slit in a light-tight manner. The light-shielding flap has first, second and third predetermined adhering regions, at least which are coated with adhesive agent and attached to the pack case. The light-shielding flap has first and second longer side lines and first and second shorter side lines. The first adhering region has a linear shape and extends along the first longer side line. The second and third adhering regions have a dot shape, and are disposed respectively at the first and second shorter side lines. The outlet slit is disposed between the second and third adhering regions.

Instant photo film pack

In manufacturing a photo film cassette, a disk producing apparatus includes a web supplier which conveys the web from a web roll to the web conveyor. The web conveyor includes two chains which convey the web in an intermittent fashion, and which include pointed portions which serially penetrate an edge portion of the web. A heater disposed upstream from the web conveyor heats the edges of the web. At the heating/forming unit, a heating plate is lowered toward the web at the same time as the female mold is raised toward the web, and the web is squeezed between them before the heating and vacuum/air pressure forming takes. Clampers/coolers disposed upstream and downstream from the heating plate and female mold squeeze the web in fixed fashion to prevent wrinkles on the web. A web/sheet cutter device includes an upper punch above the web and a lower die under the web, which squeeze the web, and cut the web into a sheet having a plurality of disk-like portions. The web is then wound by the web winder and reused later. The sheet cut from the web is separated from the web by a knockout device incorporated in the upper punch, dropped down through the lower die, and stacked on a sheet stacking container disposed on a movable bottom plate.

Disk producing apparatus for manufacturing a photo film cassette

A photographic film cassette has a spool on which photographic film is wound, and a cassette shell for containing the spool rotatably. A photographic film passageway is formed in the cassette shell. The photographic film is passed out of and into a roll chamber through the passage. A pair of light-shielding members are attached to inside surfaces of the passageway for preventing ambient light from entering the cassette shell, and are provided respectively with innermost, midway and outermost portions, as viewed in the direction of advancement of the photographic film out of the film chamber. The respective innermost and outermost portions are spaced apart one from another. The respective midway portions are in contact one with another when a leader of the photographic film is entirely contained in the chamber. In a process for manufacturing the cassette, a horn of an ultrasonic welding device is applied to the light-shielding members, to weld them to cassette halves ultrasonically. In welding, pressure of the welding horn is varied between the midway portions and the innermost and outermost portions. The light-shielding members are thus compressed with heat for reducing the thickness thereof.

Photographic film cassette and method of manufacturing the same

Light-trapping members are cut out of a ribbon consisting of a base fabric and piles. The piles of the ribbon are pressed against the peripheral surface of a thermal drum to be inclined in the width direction after the ribbon is passed through and twisted by a twister disposed close to the thermal drum. The light-trapping members with inclined piles are attached to a film passage mouth of a self-advancing-type photographic film cassette with the inclination of the piles directed to the outside of the film passage mouth, so that the leading end of a photographic film can be advanced smoothly by rotation of a spool through the light-trapping members to the outside of the cassette.

Method of making light-trapping members for photographic film cassette

A photographic film cassette has light-trapping members adhered to the upper and lower inner surfaces of a port portion of a plastic-molded cassette shell by a heat-activated type crystallization delay adhesive. The adhesive has properties that its stickiness is revealed by heat application and maintained for one second or more at temperatures equal to a heat-distortion temperature of the cassette shell, and its crystallization is advanced in a gradual manner. The adhesive is applied to the back surfaces of the light-trapping members. After the light-trapping members are heated, they are cooled down to a temperature equal to the heat-distortion temperature of the plastic cassette shell and attached to the port portion.

Photographic film cassette having light trapping members

An adhesive is made by mixing at least a peelable pressure-sensitive adhesive and a fixable remoistening adhesive that becomes strongly adherent as a result of moistening with water. The adhesive has peelable adhesivity; but when water is applied to the adhesive, the adhesivity changes to a strong adhesivity. The adhesive is applicable to adhesive tapes and adhesives for attaching photographs.

Adhesive with variable adhesivity

High-contrast photographic images are obtained by developing with a developer containing at least one dihydroxybenzene and sulfite ion and then treating with a solution of an oxidizing agent.

Method of forming photographic line and half-tone images

Growing community of inventors

Kanagawa, Japan

Nobuo Sugiyama