Minolta Camera Kabushiki Kaisha

Nobuo Ueda

Masaaki Ito

Seiichi Yamagishi

Hideaki Hirasawa

Masafumi Fujita

Takanori Saito

Hiroshi Endo

Shiro Toriumi

Yutaka Tanaka

Osami Kato

Osami Katoh

A reader printer for copying image information from a microfilm having a multiplicity of image frames recorded therein, frame marks for retrieval affixed thereon opposite the image frames, and batch marks for retrieval affixed thereon opposite the leading image frames of batches of image frames. When one of the batches of image frames is designated, the information contained in all the image frames in the batch is recorded sequentially from the last through the first of the image frames. The positioning of each of the image frames included within the designated batch at a prescribed location of the projected light path is accomplished by detecting the frame marks with a sensor, memorizing the positional relationship of the frame marks prior to the operation of print copying, and selectively imparting a motion to the microfilm based on the memorized data of position. The sensor is disposed at a position deflecting from the projected light path. Since the sensor is not affected by the light traveling through the projected light path, the positioning of the image frame at the center of the projected light path is accomplished with high accuracy. When a plurality of copies are to be produced from one image frame, the aformentioned data of positions between the frame marks are renewed each time the production of one copy is completed.

Microfilm handling system

A microfilm reader comprises a microfiche moving mechanism for sandwiching a microfiche film between an upper glass plate and a lower glass plate and moving the film in two-dimensional directions, and a projecting optical system for projecting images recorded on the film to a screen. The projecting optical system includes a projecting lens housed in a lens case placed on the upper glass plate of the microfiche moving mechanism. This lens case is raised away from the upper glass plate when the microfiche moving mechanism is in motion. The upper glass plate is raised only when the microfiche moving mechanism is in a home position for inserting and removing the microfiche film to/from a position between the upper and lower glass plates.

Microfilm reader for microfiche films

A microfiche reading apparatus for retrieving frame images recorded on a microfiche. This apparatus is automatically initialized in accordance with format information recorded in a bar code in a marginal section of the microfiche outside an image recording area. The apparatus comprises a movable support for the microfiche, a sensor for reading the bar code, and a control system for controlling movement of the support in response to the format information.

Microfiche reading apparatus

A film image projecting apparatus such as a microfilm reader and a microfilm printer adapted to automatically retrieve desired information by searching blip marks provided laterally of frames in a roll film. Conventionally, a roll film containing a plurality of rows of frames has been retrieved in most cases by manually placing a target frame in an exposure section. The known apparatus also has the disadvantage of blip marks becoming displaced from an illuminated area when an image is projected in magnification onto a screen, thereby impairing the retrieval operation. The present invention provides a film image projecting apparatus having means for eliminating this disadvantage. More particularly, the disclosed apparatus comprises a film transport mechanism, a cross slide mechanism, a projecting optical system, and a control device for suitably controlling these elements to enable desired information retrieval. The film image projecting apparatus according to the present invention is particularly suited for retrieving and copying images photographed into a plurality of rows of frames in a roll film.

Film image projecting apparatus for handling a roll film containing a

A micro film reader for projecting by optical devices on a projection surface a selected image recorded in a micro film having a plurality of recording channels in a direction of width of the micro film. The micro film reader has a film carrier for holding and transporting the micro film, a drive motor for shifting the film carrier in the width direction of the micro film, shifting amount setting keys for setting shifting amount of the film carrier, and a channel switching device. The channel switching device controls the drive motor to shift the film carrier by a shifting amount set by means of the shifting amount setting keys. The micro film reader further has a film shifting device for controlling the drive motor to shift the film carrier by a certain amount in response to external signals.

Micro-film reader

The present invention relates to a reader printer having a plurality of mode selection keys, ten-keys and a character display which displays a message indicating contents of input manipulations to be executed next with the ten keys in accordance with the mode selected by the mode selection keys whereby operating conditions of the reader printer under the selected mode are set by way of operator-to-machine conversation.

Retrieval control apparatus for microfilm reader

There is disclosed an automatic exposure control device for use in a reader-printer which controls the amount of exposure in accordance with outputs of photodetectors arranged in an optical path. Each photodetector is connected to a comparator which is supplied with comparison voltage through changes of the comparison voltage stepwise. The control device changes the amount of variation per step of comparison voltage in accordance with a change of the type of film to the positive or to the negative, and limits the photodetectors to be used for controlling only to the photodetectors being capable of receiving the light of micro film image.

Auto exposure control device for reader-printer

A microfilm reader comprising a plurality of input keys for specifying the desired frame of a microfilm, drive assemblies for automatically transporting the microfilm in response to signals from input keys to bring the specified frame to the projecting position, and a control system. Upon the application of power to the control system or change of the magnification of projection, a signal output circuit emits signals equivalent to those produced when specific input keys are depressed, to transport the microfilm automatically to a predetermined position and bring a specified frame to the projecting position without striking any input key.

Control systems for microfilm readers

A microfiche reader permitting automatic loading and unloading of a microfiche, and rapid, automatic location of a frame on the microfiche in response to keyed input, which is converted to electrical values supplied to drive a frame location device carrying the microfiche in required directions to a requisite setting.

Growing community of inventors

Sagamihara, Japan

Nobuo Ueda