Ricoh Company, Ltd.

Yukio Shirai

Hiroshi Yamada

Mitsuru Ohminato

Toshiyuki Sakakibara

Hisanori Ataka

Minolu Fukuda

Fred M Sanchez

An enlarger-printer wherein aperture cards, each mounting a microfilm, are fed one after another from a card hopper, moved in the direction in which the major sides of the cards are oriented and scanned in the direction in which the minor sides of the cards are oriented, so that imagewise exposing of a photosensitive member can be effected for each card to form an enlarged latent image of the film of each card on the photosensitive member, which latent image is then converted into a visible image. Before each card is scanned, the card is moved upwardly a distance corresponding to the margin between the image and the upper edge of the film to reduce the time required for effecting scanning. Switching between lenses of different magnifications, exposing slits of different widths and scanning speeds consistent with desired magnifications of the image can be effected simultaneously by simply actuating a lever. A mark reader may be provided so that these switching operations can be performed automatically prior to effecting exposure by reading a mark on each aperture card. The aperture cards are stacked, after being passed through various steps, in a position which is higher than the optical system of the lenses. The used cards are stacked in the same order and face the same direction as when they were held in the card hopper. Each of the reflectors for reflecting the light emanating from a light source can be withdrawn from the main body of the enlarger-printer lengthwise thereof, and does not require adjustments of its position when inserted in the enlarger-printer again, so that damage to the surface of each reflector, which might otherwise be caused in inserting and with drawing, it can be avoided.

Enlarger-printer

A jacket holder for holding a jacket wherein strips of microfilm are inserted into pockets formed in the jacket. The jacket holder comprises first and second plate members hinged with each other for holding the jacket therebetween. The first plate member includes a raised inclined surface portion at its one end portion with film strip inserting passageways formed beneath the raised portion and the second member includes a recessed inclined surface portion complementary to the raised portion. By means of the cooperating raised and recessed portions, the jacket held by the two members is bent at the portion where inlets for the pockets exist so that a film strip is easily inserted into the pocket through the passageway and the inlet. A system is also disclosed for automatically inserting film strips into the jacket pockets.

Jacket holder

An electrophotographic process and a system for preparing microfilm is provided in which use is made of a roll film including a photosensitive layer a thin film of organic photoconductive material on a film of polyester. A portion of the film is taken out of the roll and is conveyed to and stationarily held in a processing position where the film plane is vertical. A movable unit including a charger, an exposure window and a vessel of developing solution is moved parallel to the photosensitive surface which is thus held in place, in a direction which traverses the optical axis of a taking lens as well as in a direction parallel to the optical axis of the lens to effect an electrophotographic processing of the photosensitive surface while mainintaing the film plane vertical.

Growing community of inventors

Kawasaki, Japan

Yukio Shirai