Minolta Camera Kabushiki Kaisha

Kenjiro Ishii

Fumio Fukumoto

Hajime Otsuki

Yutaka Satoh

Seiichi Yamagishi

Yasuhide Kokura

Akira Shibata

Shiro Toriumi

Shuichi Saito

Yukiyoshi Yamakoshi

Yutaka Maeda

Katsunori Sakakibara

Koichi Nagata

Keiji Nakatani

Takao Saijo

Osami Kato

Shoji Kondo

Yasukuni Omata

Yoshihiro Ozaki

Masato Higashi

Shizuo Suzuki

Masaharu Aragaki

Eiichi Uchijima

A film carrier is incorporated in an image projecting apparatus and adapted to allow loading thereon of a microfilm of either of the roll film and sheet film types. This film carrier is provided with a base plate and a roll unit disposed as separated by a gap on the base plate and adapted to convey a roll film. A first moving member is disposed on the base plate in such a manner as to be moved both ways in the lateral direction of the image projecting apparatus. This first moving member is provided with a glass plate adapted to retain a stated image frame from the roll film in the part of the image projecting apparatus falling on a projected light path. Further, a second moving member is disposed on the base plate in such a manner as to be moved in the lateral direction and the longitudinal direction. This second moving member is provided with a glass plate for retaining a sheet film. The second moving member is caused to assume a retracting position when the glass plate of the first moving member is located at the position of the projected light path. The first moving member is caused to assume a retracting position when the glass plate of the second moving member is located at the position of the projected light path. The second moving member is locked at the retracting position.

Image projecting apparatus provided with film carrier allowing selective

A microfilm reader-printer having a reader mode for projecting an image of a microfilm onto a screen and a printer mode for printing the image on a copy paper. The screen is provided with indexes indicative of a plurality of sizes of a copy paper. For a copy paper of a size larger than a certain size, the index indicates a smaller size than the size of the copy paper. A lens of variable magnification type is used so that the magnification of the projection lens for the reader mode is made smaller than the magnification for printer mode when a copy paper of a size larger than the certain size is selected. The magnifications for the reader mode and printer mode are made equal to each other when a copy paper of a size smaller than or equal to the certain size is selected.

Microfilm reader-printer

A method and apparatus for additionally photographing information for retrieval during the photographing of an original image on a microfilm is disclosed. A slit light from a light source is projected on the microfilm while the microfilm is being transported. The length of the information for retrieval to be additionally photographed on the microfilm can be freely set by controlling the period of the projection of the light on the microfilm. One displaying device is adapted to project light in the pattern of one numeral on the microfilm while the microfilm is at rest.

Method of photographing on microfilm and apparatus therefor

A roll film camera is disclosed which comprises a supply reel for winding the part of a roll of recording medium yet to be used and a takeup reel for winding the part of the recording medium already used for photographing original images. This camera is constructed so as to be loaded with a plurality of types of recording medium which differs in thickness. The length of the part of the recording medium yet to be used is shown in a displaying part, according to the type of recording medium. When the residual amount of the recording medium of a given type decreases below a prescribed length, an alarm is issued which prompts the operator to make preparation for the loading of a new recording medium.

Roll film camera

Disclosed is a reader printer having an image rotation prism for adapting the direction of a microfilm image to suitable direction. The reader-printer has an image direction detecting means for forming the microfilm image successfully onto a copy paper without consideration of the direction of the image. The reader-printer also has a prism orientation detecting means for automatically eliminating difference between a location of the image and a location of the fed paper.

Reader-printer having an image rotation device

A microcamera for photographing the image of an original document on a film, with an aperture for determining a photographing area. The size of the aperture is variable in accordance with a document size by moving an end edge of the aperture adjacent a film supply reel with an end edge thereof adjacent to a film takeup reel fixed. Aperture size variations effected in this manner is free from superposition of an image on a preceding image when the photographing area is enlarged from half size to full size, for example. Conversely, when the photographing area is reduced from fullsize to half size, a space between adjacent images may be the same as when the photographing area is not reduced.

Microcamera

Disclosed is a reader-printer being capable of erasing a frame surrounding margin of a microfilm and unnecessary image portion in the frame. The reader-printer comprises first flap member, second flap member which are disposed adjacent to a slit and movable in and out of a light path directing toward a photosensitive drum and a lamp to illuminate those flap members when they are moved into the light path. The first flap member is movable in the longitudinal direction along the slit for varying a shading area.

Device for erasing unnecessary images for use in reader-printers

A reader printer having an image rotation prism for adapting the direction of a microfilm image to suitable direction. The reader-printer has an image direction detecting means for forming the microfilm image successfully onto a copy paper without consideration of the direction of the image. The reader-printer also has a prism orientation detecting means for automatically eliminating difference between a location of the image and a location of the fed paper.

A transport mechanism for transporting a photosensitive film sheet for use in an image recording apparatus, including an auxiliary scanning drum, a nip roller held in contact with the auxiliary scanning drum, a support plate extending substantially horizontally in a sheet transport path, a push lever provided at one end of the support plate and a stopper provided at the other end of the support plate.

Image recording apparatus for transporting photosensitive film sheet

An arrangement for detachably receiving a cassette containing photosensitive film sheets, which includes a drive device for driving a light shielding cover of the cassette, an electrical lock device for locking the cassette on the basis of an electrical signal detecting that an opening of the cassette is uncovered by the light shielding cover, and a mechanical lock device for locking the cassette such that locking of the cassette by the mechanical lock device is cancelled upon manipulation of the mechanical lock device.

Photosensitive medium cassette-receiver system

A mark detecting apparatus for a micro-roll film including one photoelectric element for detecting marks of different sizes provided on one edge portion of a micro-roll film for respective frames of the film, a pulse generating unit which generates pulses by radial slits formed in a disc adapted to be driven for rotation by contacting the micro-roll film, and a mark size judging circuit which counts the pulses produced from the pulse generating unit during the photoelectric element for the mark is detecting the mark of the film for judging the size of the mark by the counted value.

Mark detection apparatus for a micro-roll film

In a roll film carrier for rewinding the roll film wound on a supply reel onto a take-up reel there are provided a signal generating means which detects the rotation of the supply reel shaft and outputs a corresponding signal, a means for generating a pulse synchronously with the passage of the roll film and a means for controlling the driving of the roll film through comparison of the number of pulses generated in the signal generating period of the signal generating means with a predetermined number and it is so arranged that the driving of the roll film is stopped when the number of generated pulses has agreed with the predetermined number.

Roll film carrier used in reader or reader printer

A device for use in microfilms readers or the like for handling strip films of different widths contained in cartridges of different types comprises means for driving the reel of a cartridge loaded in place, means movable into a film feeding outlet of the cartridge to frictionally contact the surface of the strip film for feeding the film from the cartridge, means for detecting marks on strip films of varying widths, and take-up means including reel flanges settable for winding up strip films of different widths. The device is usable for cartridges adapted for different systems or produced by different makers.

Strip film handling device

In an electrophotographic copying apparatus of a type in which an electrostatic latent image of an original to be copied is formed, through suitable illumination means, on a dielectric surface of a transfer material or copy paper held under pressure between a photoreceptor plate and an electrically conductive pressure pad on a pressing plate during impression of a potential across the photoreceptor plate and the pressure pad, there are incorporated an improved pressing device for pressing the copy paper against the photoreceptor plate, and a fixing device having uniform heat radiation and operated through a special fixing temperature control circuit.

Growing community of inventors

Sagamihara, Japan

Kenjiro Ishii