Abstract:
A semi-conductor laser device has a semi-conductor laser chip and an aspherical single lens for collimating the light beam from the laser chip, said aspherical single lens being mounted in a beam exit port of a casing for protecting the laser chip, and said exit port of the casing being adapted to align the optical axis of the aspherical single lens with that of the laser chip.
Abstract:
A process for the production of lithographic printing plates, and a light-sensitive material for use in the process are described. The light-sensitive material comprises an electrically conductive support having a hydrophilic surface, and a positive type light-sensitive layer and a photoconductive insulative layer on the support, wherein the positive type light-sensitive layer and the photoconductive insulative layer are provided on the support as a unit layer or individually in that order, and the photoconductive insulative layer can be charged either positively or negatively. The desired lithographic printing plate can be prepared by treating the light-sensitive material by the simple process of the invention.
Abstract:
A beam recording apparatus in which a recording medium is simultaneously scanned by plural beams respectively modulated by recording signals, and a detection signal is generated upon arrival of a particular one of the plural beams at a determined position and is delayed to form the position signals for other beams.
Abstract:
A recording apparatus for image recording by scanning having plural dots arranged inclined to the scanning direction, wherein the phase difference of the plural dots in the scanning direction is compensated by control signals generated by an oscillator.
Abstract:
A multibeam recording apparatus comprises a scanner for scanning a recording medium with a plural number of beams, a beam detector for producing detection signals in response to the incident of every beam on the detector, a distributor for distributing the detection signals and a controller for controlling the start of recording with the beams individually by means of the distributed detection signals.
Abstract:
A beam recording apparatus effecting the recording by a plurality of beams comprises a beam generator for generating a plurality of beams modulated with recording signals, a beam deflector for deflecting the beams generated by the beam generator, a beam irradiated member irradiated with the plurality of beams deflected by the beam deflector, and a device for varying the inclination of the plurality of beams with respect to the beam irradiated member.
Abstract:
A semiconductor laser device in which a thermosensitive element exhibiting a resistance variation with temperature is installed at a location more faithfully transmitting the temperature of a semiconductor laser element and the thermosensitive element is connected to a circuit for taking out the output from a photodetector receiving the light from the laser element so that, when a wavelength fluctuation is caused by a temperature variation, information is fed back so that a required quantity of light corresponding to that wavelength is obtained, whereby an optimal quantity of light may always be maintained, and an image recording apparatus using the same.
Abstract:
There is disclosed a recording apparatus capable of providing image recording of satisfactory quality on a photosensitive member, having a wavelength dependent sensitivity, with a laser beam from a semiconductor laser element.The recording apparatus utilizing a semiconductor laser element has a semiconductor laser element for emitting a laser beam, a deflector for deflecting the laser beam emitted from the semiconductor laser element, a photosensitive member for receiving the laser beam deflected by the deflector, a filter positioned in the optical path of the laser beam between the semiconductor laser element and the photosensitive member, and a filter angle adjustor for adjusting the angle of the filter with respect to the laser beam.
Abstract:
A recording apparatus in which at least two beams from a semiconductor laser are collimated by a common collimating lens and deflected by a common deflector. A part of the deflected beams is directed to a document for information reading while the rest of the deflected beams is directed to a recording medium after modulation at least with the information thus read. Also at the document scanning the beam intensity is controlled to eliminate the effect of shading phenomenon.
Abstract:
A semiconductor laser device of a construction, wherein projection of a laser beam (or rear beam) backwardly from a semiconductor laser element in the device is prevented.