Abstract: In the field of imaging systems where multi-channel imaging heads are used, there is a possible problem of formation of artifacts in the product material such as pinholes, banding, edge discontinuities due to variation in beam intensity of the individual channels. The visual observation of these artifacts can be minimised by using a plurality of multi-channel heads and having their scan paths interconnected. The visually observable variations in the image caused by uneven characteristics of the first multi-channel head are minimised by using a second multi-channel head and imaging the patterns using an imaging scan path which combines output from both of the imaging heads.

Abstract: An imaging system is equipped with two or more exposure heads that are each able to image either a separate media sheet or a portion of a single media sheet loaded on a media carrier. The imaging time for any combination of media sheets is minimized by providing for the adjustment of the spacing between the dual exposure heads whenever the media configuration changes. In imaging a unitary image using two exposure heads to each image a sub-image, any discontinuity between the end of the first sub-image and the start of the next sub-image is reduced by changing the traversing speed of one of the exposure heads by a fractional amount.

Abstract: Methods are provided for imaging patterns on a media. The steps of the method include operating a first imaging head with individually addressable channels to direct imaging beams to form a first image on the media while scanning over the media along a scan path. A second imaging head with individually addressable channels is operated, either at the same time or a different time, to direct imaging beams to form a second image on the media while scanning over the media along a second scan path. It is possible that the first scan path may or may not be parallel to the second scan path, and that the first image may or may not be aligned with the second image. The first image may or may not be skewed with respect to the second image.

Abstract: A pattern of non-contiguous features that can be imaged in one pass of a multi-channel imaging head is divided into sets of the non-contiguous features. Each set of the non-contiguous features is imaged separately during a single scan of the multi-channel imaging head. The pattern can be completely imaged after all of the sets have been separately imaged. The non-contiguous features of one set may be interleaved with the non-contiguous features of another one of the sets.

Abstract: Two or more sets of non-contiguous features are selected from a pattern of non-contiguous features, and each set is imaged separately during a single scan of a multi-channel imaging head. The non-contiguous features selected in each set can be selected such that they are imaged with substantially the same transferred characteristics. The non-contiguous features selected in all the sets can be selected such that the pattern is completely imaged after all of the sets have been separately imaged, and each imaged non-contiguous feature in the completely imaged pattern has substantially the same imaged characteristics. The one or more sets can be selected such that the selected non-contiguous features of one set are interleaved with the selected non-contiguous features of another set.

Abstract: An imaging system is equipped with two or more exposure heads that are each able to image either a separate media sheet or a portion of a single media sheet loaded on a media carrier. The imaging time for any combination of media sheets is minimized by providing for the adjustment of the spacing between the dual exposure heads whenever the media configuration changes. In imaging a unitary image using two exposure heads to each image a sub-image, any discontinuity between the end of the first sub-image and the start of the next sub-image is reduced by changing the traversing speed of one of the exposure heads by a fractional amount.

Abstract: An imaging system is equipped with two or more exposure heads that are each able to image either a separate media sheet or a portion of a single media sheet loaded on a media carrier. The imaging time for any combination of media sheets is minimized by providing for the adjustment of the spacing between the dual exposure heads whenever the media configuration changes. In imaging a unitary image using two exposure heads to each image a sub-image, any discontinuity between the end of the first sub-image and the start of the next sub-image is reduced by changing the traversing speed of one of the exposure heads by a fractional amount.

Abstract: An imaging system is equipped with two or more exposure heads that are each able to image either a separate media sheet or a portion of a single media sheet loaded on a media carrier. The imaging time for any combination of media sheets is minimized by providing for the adjustment of the spacing between the dual exposure heads whenever the media configuration changes. In imaging a unitary image using two exposure heads to each image a sub-image, any discontinuity between the end of the first sub-image and the start of the next sub-image is reduced by changing the traversing speed of one of the exposure heads by a fractional amount.