Abstract:
An electric cross-talk, ECT, effect of laser-diode array is measured by capturing a first image of a first laser spot of a first laser diode with a second laser diode being turned off (10) and a second image of a second laser spot of the first laser diode while switching on the second laser diode (20). A spot-energy ratio is determined (30) by processing the images, and an ECT-coupling coefficient on the first laser diode is calculated (40) by switching the second laser diode. Compensating for the ECT effect includes determining a signal for predicting the ECT effect on the first laser diode by switching the second laser diode, and generating a driving signal based on a desired current profile and the ECT-prediction signal.
Abstract:
Systems and methods for replacing cells of an image based on some pre- determined metric are described herein. For example, systems and methods described herein may improve the functioning of a standard imaging system For example, the systems and methods described herein may be used to post- process existing images in an imaging system based on one or more pre- determined metrics and improve the halftone images according to those pre- determined metrics.
Abstract:
A scanner is disclosed. The scanner has a calibration strip comprising a generally rectangular glass plate, a reflection layer and an adhesive layer. The glass plate has a thickness of 0.4 mm or less. The reflection layer is coupled to one surface of the glass plate. The adhesive layer is coupled to the other surface of the reflection layer.
Abstract:
A computer implemented method of analysing the content of a digital image, for example a page to be printed, computes (41) a boundary (302) enclosing all the non- white content of the image. The image within the boundary is then divided (43) into regions (306) based on a predetermined division rule. For each region the number of unique colours and the proportion of non- white pixels are computed (44). The image is then categorised (45) according to the result of those computations. The categorisation can be used to automatically set (51) print settings according to the content of the image.
Abstract:
Compression, transmission and decompression of gray-tone imagery data includes receiving a gray-tone image suitable for printing at least a portion of a pattern onto a substrate by operation of an electron beam lithography system, aggregating sets of lines of the gray-tone image into trilines, sequentially encoding each of the trilines of the gray-tone image by operation of one or more encoders, the one or more encoders equipped with a codebook configured to store a plurality of triline fragments and a write location and transmitting the encoded trilines of the gray-tone image to a set of decoders of the digital pattern generator via a set of data pathways established between the one or more encoders and each of the decoders.