摘要:
A photographic roller copier apparatus for photographing original copies having different side lengths onto a ribbon form copier material, the ribbon width corresponding to a desired copy size. The original copies have various formats and are provided in ribbon form, one format lying lengthwise in the ribbon direction and the other format perpendicular thereto. The apparatus consisting of a lens having an adjustable focal length so that from both formats of originals it is possible to make copies that are equal in size and that fill the width of the copier material ribbon, and that in the area of a picture gate the ribbon of originals is provided in a plane parallel to the lens axis. Between the picture gate end of the lens is provided a deflecting part which deflects the beams of light from the picture gate through 90.degree. into a lens. The picture gate with the ribbon of originals, the illuminating apparatus and corresponding film rollers is rotatable around the lens axis through 90.degree. to a smaller format position.
摘要:
Each original has a notch. A notch detector is located a distance Z upstream of the point at which the notch centerline is later to be stopped, and generates a notch-start and a notch-end pulse. A transducer generates strip-increment pulses during strip transport. In response to a notch-start pulse first and second counters start counting the strip-increment pulses, the first counting the Z distance, the second counting the notch length N. A divider ascertains the notch half-length N/2, which is then stored. When the counting of the Z-distance is finished, strip transport is not immediately stopped, and instead is stopped only after the counting of a further number of strip-increment pulses corresponding to the length N/2, whereupon transport is stopped. This references the system to the reliable centerlines of variable-length notches, instead of the leading ends of the notches, and assures correct positioning when transport is stopped.
摘要:
A SKIING BOOT PUSHER IS DISPOSED SUBSTANTIALLY BETWEEN THE LEGS OF A U- OR V-SHAPED RETAINING FRAME AND IS HELD ON THE SAME FOR PIVOTAL MOVEMENT ABOUT AN AXIS WHICH IS TRANSVERSE TO THE LONGITUDINAL AXIS OF THE SKI AND PARALLEL TO THE TREAD OF THE SKI. THE FREE ENDS OF THE SKI AND PARALLEL GUIDES FOR TWO TENSION ELEMENTS, BY WHICH THE REAR TIGHTENER IS HELD ON THE SKI AND WHICH ACT ON THE PUSHER THROUGH THE INTERMEDIARY OF AT LEAST ONE SPRING, WHICH SPRING OR SPRINGS PRODUCE THE FORCE FOR HOLDING DOWN THE HEEL AND THE CONTACT PRESSURE BY WHICH THE TOE PORTION OF THE SKIING BOOT IS FORCED AGAINST A RETAINING DEVICE. A SAFETY CLUTCH IS PROVIDED BETWEEN THE PUSHER AND RETAINING FRAME AND PREVENTS A PIVOTAL MOVEMENT OF THE TWO PARTS RELATIVE TO EACH OTHER WHEN THE REAR TIGHTENER IS READY FOR USE WHEREAS IT IS DISENGAGED TO DISCONNECT THE TWO PARTS IN RESPONSE TO AN OVERLOAD. THE PUSHER EXTENDS REARWARDLY BEYOND THE AXIS ON WHICH IT IS PIVOTED TO THE RETAINING FRAME AND FORMS A TWO-ARMED LEVER HAVING A FORWARD ARM WHICH HAS A FREE END ENGAGEABLE WITH THE HEEL OF THE BOOT. THE OTHER ARM OF THE LEVER FORMS A GUIDE WHICH EXTENDS IN THE LONGITUDINAL DIRECTION OF THE LEVER AND IS IN GUIDING ENGAGEMENT WITH A SLIDER, TO WHICH THE TENSION ELEMENTS ARE CONNECTED. EACH SPRING HAS ONE END BEARING ON THE SLIDER AND ANOTHER END BEARING ON A FIXED PART OF THE PUSHER. THE CLUTCH MEMBER CARRIED BY THE PUSHER CONSISTS OF A PIN, WHICH IS MOUNTED IN THE SLIDER FOR LONGITUDINAL MOVEMENT THEREIN. THE CLUTCH MEMBER CARRIED BY THE RETAINING FRAME CONSISTS OF A LOCKING MEMBER, WHICH CAN BE ARBITRARILY RELEASED. THE PIN IS NONROTATABLY MOUNTED IN THE SLIDER AND ON A SCREW-THREADED PORTION CARRIES A KNURLED NUT, WHICH IS DISPOSED BETWEEN THE SLIDER AND THAT END OF THE SPRING WHICH BEARS ON THE SLIDER.
摘要:
Relatively short sections of photographic roll films (such sections can consist of a single film frame or of two or another small number of film frames) are provided with elongated strip-shaped extensions for convenient transport through a copying machine. Extensions are severed from the leader of a roll of convoluted flexible material having a width matching the desired length of an extension, and one end of a freshly severed extension is caused to overlap one end of a film section so that the extent of overlap is not more than the width of a frame line between two neighboring frames of a roll film. One side of each extension is fully coated with a layer of hotmelt, and the extension is sealed to the respective film section by a narrow elongated heating element which is moved against the overlapping ends of the film section and the properly oriented extension. The roll can be subdivided into wider or narrower extensions, depending upon the width of film sections which are to be connected with extensions.
摘要:
A photographic roller copying apparatus for processing films of different sizes includes a scanning device for determining a size of the film to be processed, an illuminating device, a film-supporting platform having at least one aperture adjustable to the size of the film to be processed by a pivotable plate provided on the illuminating device, and two projection systems interchangeably movable into a path of light from the illuminating device. One of the projection systems includes a pair of porroprisms for rotating the image of an original positioned in the image aperture by 90.degree..
摘要:
A cassette for winding a band-like photographic material has housing with a slot for introducing the material, a driven winding core having an endless band tensioned by a plurality of rollers and arranged to place the front of the material onto the winding core, and two lever arms pivotable about pivot axes which are parallel to the winding core axis, carrying at their ends guiding rollers and coupled with one another via the endless band, wherein one of the lever arms is connected with a spring element so that the lever arms in an initial condition assume a first position in which said endless band widely embraces the winding spool, and during further winding upon overcoming a dead point of the spring element the lever arms assume a second position in which the endless band is brought out of the region of a greatest possible spool.
摘要:
A strip of negatives is transported over a slit extending transverse to transport, and the image of successive slit-like elements of each original is projected onto the row of photosensitive zones of a CCD image sensor unit. A photodetector also receives the image of each slit-like element, either simultaneously with the CCD image sensor unit or earlier at a more upstream location, and generates an output signal indicating the average transparency of the whole slit-like image element. The average-transparency signal is used to control the clocking frequency of the clock signal which drives the CCD image sensor unit, either by changing the clocking frequency for each read-out of the image sensor unit or by changing the clocking frequency once per original, in the latter case a peak detector circuit being used to ascertain the transparency of the maximum transparency slit-like element of each original. The CCD image sensor unit may be of the type whose clock signal identically establishes the read-out rate of the photosensitive zones of the CCD and the charge-accumulation interval thereof, or may be of the type whose clock signal establishes the charge-accumulation interval without establishing the read-out rate.
摘要:
An exposed and developed photographic filmstrip having a series of image areas is conveyed along a path and is photoelectrically scanned at a first location of the path to detect regions characterized by marked density jumps. A signal is generated in response to detection of each such characteristic region and a first distance measuring device disposed near the first location assigns a first distance reading to each characteristic region upon detection thereof. The first distance readings are representative of the positions of the characteristic regions longitudinally of the filmstrip. Each signal is stored together with the respective first distance reading. The stored signals and first distance readings are used to calculate the positions of the image areas longitudinally of the filmstrip, and the calculated positions are likewise stored. From the first location, the filmstrip travels to a second location of the path where a notch is punched in the filmstrip adjacent to each image area. Immediately upstream of the second location, the filmstrip is photoelectrically scanned for a second time to again detect the characteristic regions.
摘要:
Each original in a strip of such originals is scanned during longitudinal travel of the strip using a scanning spot which repeatedly traverses a stationary scan line extending transverse to the direction of strip travel. The scanning spot has a scanning speed such that the scanning spot travels from one to the other end of the stationary scan line in a time less than the time in which the strip travels a distance equal to the breadth of the scan line. The scanning spot which repeatedly traverses the scan line is generated using a light shield having a slit which delimits the scan line and a rotating disk having equiangularly spaced apertures which move through a stationary light beam passing through the moving strip of originals.
摘要:
Apparatus for processing signals which are transmitted by the transducers of photoelectric cells scanning discrete marginal fields of square or rectangular film frames on a web of photographic film has relay-actuated switches which can connect the transducers of selected cells to each other and with the foreground and background inputs of a signal receiving circuit which is connected to the exposure controls of a copying machine or to a data carrier. The frames are examined by an attendant who energizes selected relays or several relays at a time to thereby cause the switches to transmit to the two inputs appropriate signals denoting the density and/or other characteristics of corresponding groups of neighboring marginal fields, depending upon whether the frame which is being inspected by attendant has been exposed in normal orientation, at right angles to normal orientation or upside down.