44results about "Photoelectric composing devices" patented technology

There is disclosed a computerized prepress system having imposition means for receiving from a digital storage means at least one digital representation of at least one page and for arranging this digital representation in accordance with a desired plate layout, to define a digital plate image and, ghosting prediction means coupled to the imposition means. These ghosting prediction means are operable to make a ghosting prediction based on data from at least one of the digital plate image and a relatively low resolution version of the data.

A record-medium determining apparatus constituted such that a luminescent light source irradiates modulated light to a surface of a record medium, a part of reflected light by the record medium of this irradiated light is detected by a photodetector, the photodetector changes the detected light into an electric signal, and a signal-intensity detecting device detects intensity of a signal modulated from this electric signal is provided further on an upstream side than a fixing unit of a record-medium conveying path.

A system and method for processing raster data including at least one input computer terminal for creating postscript data, at least one raster image processor (RIP), for processing the postscript data into raster data, and a PrintDrive system for managing and controlling the workflow of image files containing raster image data to a plurality of user selectable output devices.

A beam scanning system for scanning an imaging surface includes a phase shifter for issuing phase signals, a radiation emitter for emitting a beam of radiation and a deflection element, such as an acousto-optic modulator or translating lens, for deflecting the radiation beam. Depending on the implementation, the emitter can be configured to phase shift the radiation beam and/or the deflection element can be configured to deflect the radiation beam in accordance with the issued phase signals. By emitting and/or deflecting the radiation beam in accordance with the phase signals, the length of the scan line formed on the imaging surface can be controlled. A deflector, such as a spin mirror or rotatable prism, is provided to direct the radiation beam to form a scan line on the imaging surface.

A recorded image is distorted on a printing plate when an image information for a computer is recorded in the form of a band with a band width of a plurality of image elements on a printing plate wound around a drum. This invention provides an undistorted recording on the printing plate, made possible by an arrangement that has a printing plate wound around a drum in the form of a right circular cylinder, an exposure unit that uses a light beam to record image information in the form of a band on the printing plate, a moving mechanism to move the exposure unit by one band width in the direction of the drum axis in relation to the drum while the drum makes a revolution, an image treating apparatus with the image information stored in the form of a right quadrangle, and an image modulator to rearrange and slant each band of image information readout from said image treatment apparatus by one band width in the opposite direction to the movement of said moving mechanism.

The invention discloses a method for implementing alight spot joint seal in a fiber densely-arranged line array, which comprises the following steps of: (1) taking a substrate graved with a plurality of grooves distributed in equal spacing distance on the surface; putting fibers in the grooves of the substrate respectively, and fixing the fibers and the substrate to obtain a densely-arranged fiber layer assembly; and (2) preparing a plurality of densely-arranged fiber layer assemblies with the same method as the step (1), and stacking the prepared fiber layer assemblies together in parallel up and down, wherein the fibers on the upper and lower fiber layers are staggered to ensure the projection light spots of all fiber array output light spots in a densely-arranged fiber module on a horizontal line are in joint seal or proper superposed arrangement. The invention also discloses a densely-arranged fiber module prepared with the method. The densely-arranged fiber module avoids the problems of poor output image quality and over high requirement for a focusing and imaging lens because more fibers are arranged in single-layer fiber arrangement, the arranged fiber array is widened and the lead angle is largened in spiral scanning and imaging.

To obtain proper output results regardless of the type of recording sheets and obtain the user's desired output results without having the user perform cumbersome operations, the user operates an operating section to select a sheet feeding stage, gives an instruction to start copying, and then a controller section 15 of an image forming apparatus determines whether or not a 180° rotation mode for rotating image data through 180° is set and/or whether or not preprint sheets are used for recording. If the answer is negative, the image data are output based on normal settings. On the other hand, if the answer is affirmative, the image data are output after being rotated through 180°.

An optical element driving device includes an optical element holder, first and second magnets, first and second magnetic bodies each having a cross section including a vertex and first and second legs forming an opening therebetween, first and second piezoelectric elements that move the optical element holder in directions perpendicular to each other by slidingly moving the first and second magnetic bodies by vibrating the first and second magnets, and first and second magnetic sensors that detect a position of the optical element holder, wherein the first and second piezoelectric elements are driven in a state in which the first and second magnets are coupled to the first and second legs from the opening side, wherein the first and second magnets are each magnetized in directions perpendicular to a magnetization line, and wherein the second magnetic sensor is disposed at a position that is not on the magnetization line.

The method and device for realizing automatic balance regulation of several light paths is mainly used in multiple light path scanning imaging system in laser phototypesetting. The method includes setting each of the light power control unit in either calibration state or scanning state; setting switching circuit for switching between the two states; and performing automatic real-time detection and regulation of the light power control units in calibration state circularly with computer. The device for the said method includes monochip computer, address decoder, digital comparator, photoelectric sensor, lens, linear fiber array, light conducting fiber, power control unit and print drive bus. The present invention balances power of the light paths, eliminates moire fringe, and raises the scanning imaging precision of laser phototypesetting system.

The invention relates to a modular exposure system, which comprises: an exposure mechanism which is used to expose the exposure base with a photosensitive medium layer; a transmission mechanism which is used to ensure the relative motion of the exposure base and the exposure mechanism, wherein the exposure mechanism comprises a plurality of exposure modules, and the exposure system further comprises a failure testing mechanism which is used to test the exposure module in the exposure mechanism and a replacement mechanism which is used to replace the failure exposure module or the replacement element of the failure exposure module according to the testing result of the failure testing mechanism. According to adopting the structure, the modular exposure system has the advantages of achieving the replacement modular design of the exposure mechanism of the exposure system, and guaranteeing the reliable application of the whole exposure system by utilizing the real-time on-line detection and the replacement type renovation.

The invention provides a label processing method for board combination. The label processing method comprises the following steps of: determining layers of labels in a large board, wherein the layers adopt printed pieces as partitions in the large board; and generating a label file respectively by labels of all the layers. The invention provides a label processing device for board combination comprises a layering module and a generating module, wherein the layering module is used for determining the layers of the labels in the large board, and the the layers adopt printed pieces as partitions in the large board; and the generating module is used for generating one label file respectively by the labels of all the layers. In the invention, the labels are processed by layering, so that the problem of poorer flexibility in the prior art is overcome, and the arrangement of the labels is more flexible when in board-combination processing.

The invention discloses a method of the spot joint seal in the optical fiber close-spaced linear array. The process is: 1) one end of the standard single mode optical fiber is draw to the micro optical fiber with diameter of 5-25 mum which includes the standard optical fiber and the transition region; 2) Many micro optical fiber which the end is interval and parallel are lain on the silicon base plate coated the magnesium fluoride on the surface with the V groove or the magnesium fluoride base plate with the rectangle groove; 3) the glass sheet coated the magnesium fluoride on the surface or the magnesium fluoride board is set on the micro optical fiber to form the micro optical fiber close-spaced array fixed with the base plate by the ultraviolet glue; 4) the end of the standard optical fiber is connected with the semiconductor laser by the FC interface and the close-spaced micro optical fiber array outputs the spot array. So the invention can improve the imaging precision of the laser phototypesetting system and the focal depth but decrease the demand of the position precision when the film exposures.

The present invention relates to a method for making face portion of model. Said method mainly includes the following steps: taking a photograph of head portion; making three-dimensional clay sculpture head figure; respectively making female moulds and male moulds; using computer to make two-dimensional head figure picture; printing the head figure picture on PVC film; then using injection machine to make three-dimensional head figure.

Method and device for producing a printing block In a printing block a relief is introduced into the surface of a printing block blank (1) in that material of the printing block blank (1) is removed in regions along tracks by radiation in order by this means to form recesses (V) between which plateaus come to lie. According to the invention the surface of the printing block blank (1) located between the recesses (V) is also removed by radiation in order by this means to obtain lower-lying plateaus (P2).

An 8-bit (256 gradient) image is represented using a driver IC of 6-bit (64 gradient) construction to drive a plurality of arrayed optical shutter elements. The image data are divided into 64 gradient sections, synchronized by shift clock signals, and transmitted in four cycles to the shift register. The optical shutter element is not turned OFF at the 64th pulse, but is continuously driven without transmitting to the comparator the standard clock signal of the 64th pulse, which controls the ON time of the optical shutter element.

In this way, an image of a higher number of gradient levels can be represented using a driver IC of a low number of bits, thereby providing a solid state scanning type optical recording device which suppresses noise generation by reducing the load on the driver IC when driving at multi-level gradient.

Novel antenna polymers characterized by a polymeric background of a biodegradable water soluble polymer and chromophores chemically bonded to the polymeric background have been found to be useful as photocatalysts in aqueous media. On completion of the desired photochemical reaction, the residual medium can safely be discharged to the natural environment as the catalyst residues undergo biodegradation to form environmentally harmless products.

The invention relates to a correction method of a fiber compact array imaging and a laser imaging device where the method is applied; wherein, the fiber compact array comprises a plurality of fibers which are arranged along lines and inclined by a certain angle corresponding to the prearranged direction of an image plane. The correction method comprises that image signals which are respectively corresponding to all fibers in the fiber compact array are received; the image signals are respectively delayed in the shift register of an FPGA; all delay image signals drive the laser sources which are corresponding to all the fibers so as to image the image signals which are synchronously received on the image plane sequentially with prearranged interval through the fiber compact array. By adopting the method, the image signals which are synchronously received by the FPGA are delayed so as to lead the image signals to be output with prearranged interval and matched with the movement of the image plane in order to be imaged in the same line which is parallel to the prearranged direction, thus realizing the correction process; meanwhile, the invention has the advantages of high integrated level, easy realization, simple structure, fast operation speed, stable operation, low malfunction ratio, etc.

A light-splicing method for implementing multi-channel output on laser typesetter to increase output speed is disclosed. A laser signal from the laser device is partially reflected to an acoustooptical modulator by a half-reflecting half-transmitting mirror. The transmitted laser signal is reflected to another acoustooptical modulator by reflector. According to control signal, the laser signal is diffracted into multiple channels of laser signal by said acoustooptical modulator. Said two laser signals are spliced by a half-reflecting half-transmitting to become the parallel channels of laser signal. Its system is also disclosed.

An optical head having a laser source of beams at an input end and image forming beams at an output end and a plurality of optical components arranged along the beams between the input and output ends to obtain an image on a photosensitive printing plate from the beams. The optical components include reflecting surfaces adapted to fold the beams several times between the input and output ends times in such a way as to reduce the width and height of the optical head. The folded beams are located in a plurality of parallel surfaces perpendicular to the image formed on the photosensitive printing plate. The optical head further includes optical components adapted to adjust the width, location, orientation and intensity of the image from the beams.