Abstract:
A method and system of controlling at least one printbar in a printing system are described. The printing system has one or more of printbars (160, 190) distributed along a media transport. A first image including a reference pattern (240A, 240B) is generated on a print medium (150) with a first printbar (160). A detector (180) then detects a pattern on the print medium. The reference pattern and the detected pattern are used to determine a position of the first image relative to a second printbar (190). This position is used to configure nozzle data for a second image to be generated on the print medium by the second printbar.
Abstract:
The invention relates to an anamorphic laser scanning device (25) comprising a light source (1) and means for generating a writing beam (2) with a particular on/off frequency, in function of particular data (20) whereby the device comprises: a reference laser source (11) for generating a reference beam (12), provided to follow at least a part of the optical path of the writing beam (2); means (13) for detecting the position and/or speed of the reference beam (12); and means (17, 18, 19) for controlling said frequency in function of the detected position and/or speed of the reference beam (12).
Abstract:
A method and system for electronic data entry using an electronic reading device that detects at least one position of the electronic reading device relative to a predefined address pattern of a specially formatted surface. Data relating to the at least one detected position is transmitted, preferably via a wireless interface using a radio transceiver. The data is received by a separate electronic device that performs an operation using the received data, wherein the operation corresponds to an area on the address pattern that contains the at least one detected position. The operation, for example, can include initiating a hyperlink function.
Abstract:
A method and system for monitoring moving parts relies upon a formatted surface of a moving part. The formatted surface includes an address pattern wherein a precise position relative to the address pattern can be determined from a portion of the address pattern. An electronic reading sensor detects a portion of the address pattern, and a processor uses the detected portion of the address pattern to determine a current position of the moving part.
Abstract:
An improved laser pattern generation apparatus. The improved pattern generation apparatus of the present invention uses a laser beam (501) to expose a radiant sensitive film on the workpiece (516) to print circuit patterns on a substrate. The laser beam is aligned using a beam steering means. The laser beam (501) is split into 32 beams to create a brush. The brush scans the workpiece (516) through use of a rotating polygonal mirror (510). Each beam of the brush may have one of seventeen intensity values. The beams are modulated by an Acousto-Optical Modulator (506) signals provided to the Acousto-Optical Modulator (506) define the pattern to be generated. The signals are created by a rasterizer (507) increased print speed is accomplished through the use of a wider brush and a print strategy that eliminates physical stage passes.
Abstract:
A hand-held scanner (1) is provided for reading characters from a string of characters recorded on a substrate (2). The scanner (1) may be held like a pen and moved, in contact with the substrate (2), along the string of characters. Movement of the scanner is sensed by a sensor (21). An optical system views a small area (32) of the substrate (2) and an optical detector (26) detects the relative intensity of light reflected from each of several points in the area of view (32). To facilitate tracking, a portion of the string of characters adjacent to the area of view is clearly visible to the user. The scanner includes memory for storing codes representing individual characters. The scanner may include a computer (41), connected by a cable (42), or may be self-contained and battery operated.
Abstract:
An apparatus and method for controlling discharge devices used to image a planographic printing plate are disclosed. Imaging information is stored in a first memory while discharge correction data is stored in a second memory. The correction data is used to vary the intervals between imaging discharges to compensate for error between the sensed position of the printing plate with respect to a writing head and the actual position. Printing artifacts are visually minimized by staggering the imaging devices used to produce separation plates.
Abstract:
A scanning system, having a fixed platen and optical imaging system and a translated reference scale, is provided for scanning of a modulated light beam (or a set of parallel, independently modulated light beams) onto an object surface. The optical system provides a combined light beam including the modulated light beam and a reference light beam. An optical imaging device moves the combined light beam along a scan line, and a translatably mounted beam splitter splits the combined light beam to direct at least some of the reference light beam onto a reference scale and a sensor. The reference scale sensor, which is rigidly attached to the beam splitter, and is responsive to reference beam position in two directions, provides a clocking signal indicative of beam position along the scan line and a vernier position signal indicative of beam position in a direction transverse to the scan line. An optical stepper controls the translation of the beam splitter such as to position precisely each of a series of scans in a direction transverse to the scan lines.
Abstract:
In connection with graphical drum scanning a very high accuracy of the drum is required and the scanner unit has to be very accurately adjusted. The invention provides for different purely dynamic adjustment methods, which enable a significant reduction of the accuracy requirements and therewith a reduced price of the scanner units.
Abstract:
A thermal printer is disclosed which is particularly suitable for making slide transparencies. The printer includes a laser which provides the necessary thermal energy to effect a transfer of dye from a donor element to a receiver element. A beam from the laser passes through suitable optics and is scanned onto the receiver element by a galvonometer. In order to insure the transfer of dye from the donor at a suitable resolution and with sufficient speed, a relatively high-powered single transverse mode coherent laser is used.