摘要:
An apparatus for making a lithographic printing plate according to the silver salt diffusion transfer process image-wise exposes an imaging element with a high intensity short time scanning exposure. The imaging element comprises on a support in the order given a silver halide emulsion layer and a layer containing physical development nuclei. A thus obtained image-wise exposed imaging element is subsequently developed in the presence of a developing agent and silver halide solvent. The image-wise exposure is focused substantially within the silver halide emulsion layer of the imaging element.
摘要:
A positive lithographic printing plate exposed by an imagesetter and suitable for mounting on a press cylinder comprising a photo-lithographic DTR material having a DTR processed RIP image to be printed lithographically and a DTR processed ink repelling region for mounting the printing plate on the press cylinder. The RIP image is exposed according to exposure commands which are sent to the imagesetter by the RIP and the DTR processed ink repelling region is exposed according to exposure commands generated by the imagesetter.
摘要:
An apparatus for changing the orientation of a control panel of a scanning system to provide maximum convenience according to the orientation of the scanning system on a desktop surface. The apparatus comprises a circular control panel rotatably mounted within the main case of the scanning system, together with one or more spring-loaded mechanisms serving to lock the rotatable control panel module in a position set by an operator.
摘要:
A media transport bridge is an integral media transport device within an internal drum laser imagesetter that transports media from an imaging area in the drum to an external processor or intermediate buffer. Five pairs of rollers transport the film over the drum. A first stage of the bridge includes a first pair of rollers driven independently so that the first stage is removable and replaceable with a take-up cassette if desired. A friction drive within the imagesetter is adaptable to drive either the first stage or the take-up cassette when installed. Upon removal of the first stage, an automatic adjustment of the bridge is performed to balance the pivotally mounted bridge. The media is moved into the bridge by a pair of drum rollers while the first stage is synchronized with the other four pairs of rollers in the bridge and monitored to keep a slack loop of media at the first stage rollers to eliminate perturbations in the media. A mechanical flag sensor changes state to slow and speed up the bridge rollers to maintain the slack loop.
摘要:
A scanning system comprising a cleaning apparatus for automatically cleaning originals prior to scanning and a dual mode scanner for scanning transmissive and reflective originals. The cleaning apparatus includes an ionizing dust remover and an electrically conductive brush assembly for sweeping dust and other foreign particles from the surfaces of the originals to be scanned.
摘要:
A cover for holding a document to be scanned against the transparent scanning surface of a scanning system. The cover includes at least one hinged "bending axis" about which a portion of the cover may be pivotally displaced without affecting the remaining portion(s) of the cover. Preferably, the bending axes are such that the cover may be pivoted about either of two lines corresponding to the diagonal axes of the rectangular cover.
摘要:
A scanning system for scanning an imaging surface includes a radiation emitter configured to emit a beam of radiation directed towards a deflector for scanning the beam onto the imaging surface. A detector detects any misalignment of the beam with respect to the deflector. A driver moves a correction element substantially perpendicular to the beam axis of the correction element to correct for the detected misalignment during scanning of the imaging surface.
摘要:
The invention resides in an imaging apparatus comprising a stationary support element for supporting an imaging material, an imaging device for exposing an image onto the imaging material, and a loading device for automatically loading and unloading the imaging material onto the stationary support element. The loading device includes an output conveyor mechanism for removing the imaging material from the stationary support element without contact between the image on the imaging material and an adjacent platen.
摘要:
A method and apparatus for performing a rough crop of a mounted image off-line prior to scanning. The apparatus comprises a kit having cards with apertures of various defined sizes and slide holders corresponding to standard original (film) sizes to be used. Each aperture card is labeled for identification, and each slide holder is marked with labeled lines at discrete intervals parallel to the card edges, following a Cartesian orientation. An original to be scanned is mounted in a slide holder corresponding to its size, and an aperture card selected for the desired cropping aperture, from the set included in the kit, and placed on top of the slide holder card with the outside edges of both cards aligned. An offset of the crop aperture from the center of the image is accomplished by shifting the crop card until one or more of the parallel lines on the slide holder come into view. When the desired rough crop aperture has been achieved, it can be specified quickly by a three-element code comprising the aperture card identifier, and two indices identifying which the offsets as given by the exposed parallel lines.
摘要:
The primary function of the optional handler is to make plates available on demand to the imaging engine. A multitude of plates are stored inside cassettes and these cassettes are loaded into the handler. There may be up to four cassettes residing in the handler. Inside a cassette there may be a protective interleaf sheet, sometimes called a slip sheet, between each plate which is removed by the handler and discarded. The handler receives commands from the engine control sequencer which provides instructions as to what cassette needs to be accessed to make a plate available to the picker mechanism so the plate may be conveyed to the imaging engine. Conversely the handler provides status information to the engine to make full interaction with the system possible.