44results about "Photoelectric composing devices" patented technology

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.

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.

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.

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.