摘要:
A method and an apparatus for exposing light-sensitive materials, including a first light beam conducted from a light source with the wavelength lambd1 to a first exposure point on the light-sensitive material via an optical system. This system has at least one input end and one output end as well as at least one reflecting or transmitting rotating optical element arranged relatively to the optical output end, wherein at least one additional light source generates an additional light beam with a wavelength lambdx which is different from lambd1. The additional light beam with the wavelength lambdx is conducted via the input end of the optical system to the output end of the optical system, so as to be geometrically coincident with the first light beam at the output end of the optical system, the additional light beam being conducted from there to an additional exposure point on the light-sensitive material inside the image setter drum in dependence on lambdx or the mutual difference between the wavelength DELTAlambd, said light beams being conducted completely or partly from the input end of the optical system via one or more light guides, preferably optical fibers, to the output end of the optical system.
摘要:
An internal drum plotter including apparatus for mounting a recording substrate in a generally cylindrical configuration about a longitudinal axis, a multi-beam light source assembly (14) disposed at a first location along the longitudinal axis, and including a plurality of light sources (16) which are separated from each other along an axis (18) perpendicular to the longitudinal axis (12), light directing apparatus operative to direct light received from the multi-beam light source assembly to the recording substrate and apparatus for transmitting light from said multi-beam light source assembly to said light directing apparatus substantially without inaccuracies which are functions of the period of rotation of the light directing apparatus about the longitudinal axis.
摘要:
In einem optisch- mechanischen Ablenker mit mindestens einem dreh- oder schwenkbaren Abtastspiegel (2), der von einem im wesentlichen parallelen Strahlenbündel getroffen wird, erfolgt eine Fokussierung in eine Bildebene (5) mittels eines nahe der Bildebene angeordneten Hohlspiegels (10). Nahe dem Abtastspiegel (2) ist eine praktisch plankonvexe Linse (7) angeordnet. Die Planfläche (8) dieser Linse ist dem Abtastspiegel zugewandt und bricht den reflektierten Strahl je nach Ablenkwinkel verschieden stark. Die konvexe Fläche (9) der Linse (7) wird von diesem gebrochenen Strahl im wesentlichen senkrecht durchstrossen.
摘要:
A method and an apparatus for exposing light-sensitive materials, including a first light beam conducted from a light source with the wavelength lambd1 to a first exposure point on the light-sensitive material via an optical system. This system has at least one input end and one output end as well as at least one reflecting or transmitting rotating optical element arranged relatively to the optical output end, wherein at least one additional light source generates an additional light beam with a wavelength lambdx which is different from lambd1. The additional light beam with the wavelength lambdx is conducted via the input end of the optical system to the output end of the optical system, so as to be geometrically coincident with the first light beam at the output end of the optical system, the additional light beam being conducted from there to an additional exposure point on the light-sensitive material inside the image setter drum in dependence on lambdx or the mutual difference between the wavelength DELTAlambd, said light beams being conducted completely or partly from the input end of the optical system via one or more light guides, preferably optical fibers, to the output end of the optical system.
摘要:
An internal drum plotter including apparatus for mounting a recording substrate in a generally cylindrical configuration about a longitudinal axis, a multi-beam light source assembly (14) disposed at a first location along the longitudinal axis, and including a plurality of light sources (16) which are separated from each other along an axis (18) perpendicular to the longitudinal axis (12), light directing apparatus operative to direct light received from the multi-beam light source assembly to the recording substrate and apparatus for transmitting light from said multi-beam light source assembly to said light directing apparatus substantially without inaccuracies which are functions of the period of rotation of the light directing apparatus about the longitudinal axis.
摘要:
Character matrices are stored in and retrieved from a magazine automatically. The matrices can be complete discs or pie-shaped «petals» which are assembled to form a disc. A single pivotably-mounted support arm is used to support the spinning disc, and to move it for selection of concentric arrays on the disc, as well as for storage and retrieval of matrices. A reversed zoom lens is used to magnify the characters. The character spacing carriage can move continuously in order to increase the speed of operation. Proper location of the characters can be done by simply altering the carriage speed between projections, or by using a shuttling lens for character spacing compensation, together with flash delay and carriage deceleration. A system for inputting images from any one of three separate discs also is provided. A double-dove prism and optical wedges are used for altering the shapes of characters. Rules are formed by operating a flash-lamp very rapidly to shine light through an appropriately-shaped opening and moving the image along the photosensitive surface in a linear path. The matrix can be moved in a varying speed mode in which the matrix is moving slowly or stationary when the character is flashed. This allows the light intensity of the flash lamp to be raised significantly without significant degradation of the quality of the output. Controls are provided for automatically adjusting the baseline of the characters, the margins, the degree of anlargement, the flash intensity, and the focus. A simple attachment is provided for doubling or halving the size of the characters. The machine can produce output on photographic film or paper or electrophotographic material. Means are provided for automatically inserting graphic matter (pictures) into text matter for composing full pages, and for making halv-tones.
摘要:
The present invention relates to an internal drum imagesetter for irradiating a sheet-like material, the imagesetter comprising: a drum having a substantially circular cylindrical inner surface for holding the sheet-like material during irradiation, irradiating means for irradiating the sheet-like material, guiding means for guiding the irradiating means substantially along the central axis of the drum, and means for moving the irradiating means so that the optical axis of the irradiating means may be aligned with the central axis of the drum to compensate for e.g. deformations of said drum during irradiation. Furthermore, the invention relates to a calibrating means for calibrating the compensation in the internal drum imagesetter, the calibration means comprising: a comparison between a reference image and a test image comprising one or more alignment marks is performed and where the calibration is derived from the relative positioning of one or more of the alignment marks of the reference image and the corresponding alignment mark(s) of the test image in order to correct for any misalignment between the spinner and the inner surface of the drum.
摘要:
Ein optisches Flachbett-Ablenksystem umfaßt mindestens eine rotierende aktive Reflexfläche (6) zum Ablenken eines Strahlenbündels (1) entlang einer Ablenkzeile in einer planen Ablenkebene (15) sowie ein zwischen der aktiven Reflexfläche und der Ablenkebene angeordnetes abbildendes Linsensystem (fθ-Linsenanordnung 18). Um den störenden Einfluß des Lagerwobbelns auf die Abbildung zu verringern, ist dem abbildenden Linsensystem (18) ein umgekehrt fernrohrartiges optisches System (2 - 8) vorgeschaltet, welches einen Ausgangswinkel (2B) der aktiven Reflexflächen vergrößert. In Verbindung damit sind nur zwei rotierende aktive Reflexflächen vorgesehen, von denen je eine an einem nach dem Pentaprismenprinzip kippunempfindlichen Prisma (z.B. 4) ausgebildet ist.
摘要:
Character matrices are stored in and retrieved from a magazine automatically. The matrices can be complete discs or pie-shaped «petals» which are assembled to form a disc. A single pivotably-mounted support arm is used to support the spinning disc, and to move it for selection of concentric arrays on the disc, as well as for storage and retrieval of matrices. A reversed zoom lens is used to magnify the characters. The character spacing carriage can move continuously in order to increase the speed of operation. Proper location of the characters can be done by simply altering the carriage speed between projections, or by using a shuttling lens for character spacing compensation, together with flash delay and carriage deceleration. A system for inputting images from any one of three separate discs also is provided. A double-dove prism and optical wedges are used for altering the shapes of characters. Rules are formed by operating a flash-lamp very rapidly to shine light through an appropriately-shaped opening and moving the image along the photosensitive surface in a linear path. The matrix can be moved in a varying speed mode in which the matrix is moving slowly or stationary when the character is flashed. This allows the light intensity of the flash lamp to be raised significantly without significant degradation of the quality of the output. Controls are provided for automatically adjusting the baseline of the characters, the margins, the degree of anlargement, the flash intensity, and the focus. A simple attachment is provided for doubling or halving the size of the characters. The machine can produce output on photographic film or paper or electrophotographic material. Means are provided for automatically inserting graphic matter (pictures) into text matter for composing full pages, and for making halv-tones.