Minolta Camera Kabushiki Kaisha

Yasushi Yamade

Kuniaki Kamimura

Kenji Sawada

Takao Saijo

Masafumi Fujita

The disclosure relates to a card transporting device for use in a reader printer or the like. The card transporting device is capable of first transporting for transporting to a projecting position in the reader printer one after another a plurality of aperture cards accommodated in an accommodating portion of the card transporting device, second transporting for transporting one aperture card inserted into the card transport device through an insertion portion thereof, discharging the projected aperture card to either first or second discharge portions provided in the card transporting device, and third transporting for transporting to the projecting position the aperture card discharged in the first and second discharge portions.

Card transporting device for use in a reader printer or the like

A reader-printer for copying on a recording paper an image recorded in a microfilm is disclosed, which reader-printer is provided with shutter members capable of intercepting the projected light passing through the part of margin bordering the image. The size of the image in the microfilm is memorized in a memory. The size of the image to be copied and the size of the recording paper on which this image is to be formed are compared based on the ratio of magnification of projection of a projection lens to be used for projecting light through the image on a photosensitive member. The shutter members are driven based on a result of the comparison so that, of the path of the projected light directed to the photosensitive member, the part corresponding to the margin is automatically intercepted by the shutter members.

Reader-printer

A microfilm projection apparatus is disclosed which is usable for a plurality of zoom lenses having different magnification ranges from each other. In the zoom lenses attached, the zoom lens selected from the plurality of zoom lenses to be used is identified. A plurality of specific magnifications corresponding to each zoom lens are memorized. When the zoom lens is set in place, the specific memorized magnifications corresponding to the selected zoom lens are indicated. The magnification of the zoom lens is set to the desired magnification designated from the specific magnifications.

Microfilm projection apparatus having zoom lenses

A microfilm image processing apparatus in which a carriage unit carrying a plurality of projection lenses arranged in an array is provided in conjunction with a microfilm holder, wherein two different paths of light are to be selectively established, one from the carriage unit toward a viewing screen and the other from the carriage unit toward any light receiving member such as a photosensitive drum for producing electrostatic latent images and wherein the carriage unit is movable back and force in a direction perpendicular to the path of light from the microfilm holder either for scanning the image on a microfilm strip retained in the microfilm holder or moving a selected one of the plurality of projection lenses on the carriage unit into a position aligned with the path of light from the microfilm holder, each of the projection lenses being preferably of the zoom type and being axially movable by the carriage unit to provide a variable magnification ratio within a range prescribed for each projection lens.

Microfilm image processing apparatus

A microfilm image processing apparatus in which a plurality of zoom lenses having different ranges of magnification are provided in a manner that each of the lenses is movable into and out of a position operative to project a beam of light carrying an image on a microfilm strip onto a target plane, wherein the individual zoom lenses are associated with movable members so that the effective magnification of each of the zoom lenses is variable with movement of the associated movable member, and wherein the movable members are interconnected together and are to be driven for concurrent movement by a driving force having a first direction and a second direction opposite to the first direction, the driving force having the first direction resulting in movement of one of the zoom lenses in a direction to increase in the magnification of the lens and movement of another lens in a direction to decrease in the magnification of the lens.

A microfilm image processing apparatus in which a plurality of zoom lenses having different ranges of magnification are provided for selective use and in which each of the zoom lenses has an associated zoom control gear coaxially disposed aroung the lens to be capable of driving the associated zoom lens for axial movement to vary the effective magnificatio ratio to be achieved by the lens, wherein an angular position detector of, for example, the stroboscopic pickup type is provided in conjunction with the zoom control gear on at least one of the zoom lenses to detect the angular position of each of the zoom lenses and thereby determine the magnification ratios achievable by the individual zoom lenses, and an integral magnification ratio detector is provided in association with the zoom control gear on each of the zoom lenses to detect a particular angular position of the associated zoom control gear, the particular angular position of each zoom lens being such that the zoom lens associated with the gear provides an integral magnification ratio. The magnification ratios determined by the angular position detector are stored into a memory and the magnification ratio to be achieved by a selectged one of the zoom lenses may be corrected when the zoom control gear on the zoom lens is detected to be in the particular angular position thereof.

'Microfilm image processing apparatus'

A negative-positive microfilm discriminating system for use in a microfilm reader/printer apparatus, comprising a reflector mirror for projecting a beam of light bearing an image detected from a microfilm strip, a sensor disposed in the path of light from the reflector mirror for detecting the densities in each of a plurality of blocks of a patterned image zone of the microfilm strip, and a control circuit for selecting out of the blocks the blocks having acceptable degrees of contrast, determining whether the image zone within each of the selected blocks is a negative or is a positive and determining whether the micrifilm strip is a negative or is a positive.

Negative/positive microfilm discriminating system

A negative-positive microfilm discriminating system for use in a microfilm reader/printer apparatus, comprising a sensor for detecting the densities at a plurality of spots within an image zone of a microfilm strip, and a control circuit for discarding a fraction of the density data when the fraction of the data is representative of a density occurring at less than a predetermined percentage of the total number of spots and discriminating whether the microfilm strip is a negative or a positive on the basis of the remaining fraction of the density data.

Growing community of inventors

Osaka, Japan

Yasushi Yamade