摘要:
Two substantially one-dimensional scan line images are simultaneously generated by modulating a two-dimensional homogenous light field using a spatial light modulator (120) having light modulating elements (125) arranged in a plurality of rows and a plurality of columns. An upper group of modulating elements are configured using a first scan line image data group, and a lower group of modulating elements are configured using a second scan line image data group. The homogenous light source is then pulsed (toggled) to direct the two-dimensional homogenous light field onto the spatial light modulator. The resulting two-dimensional modulated light field is directed through an anamorphic optical system, which images and concentrates the modulated light on an imaging surface such that two parallel one-dimensional scan line images are simultaneously formed on the imaging surface.
摘要:
A single-pass imaging system (100) for a printing apparatus capable of 1200 dpi or greater that includes a homogenous light generator (110) for generating homogenous light (118A) from high energy IR lasers, a spatial light modulator (120) including light modulating elements (125) arranged in a two-dimensional array, and an anamorphic optical system (130). The light modulating elements (125) are disposed such that each modulating element receives an associated homogenous light portion, and is individually adjustable between an "on" modulated state and an "off" modulated state, whereby in the "on" modulated state each modulating element modulates its received homogenous light portion such that an associated modulated light portion is directed onto a corresponding region of the anamorphic optical system. In the second modulated state, the associated homogenous light portion is prevented (e.g., blocked) from passing to the anamorphic optical system. The anamorphic optical system then anamorphically concentrates the modulated light portions to form a scan line image.
摘要:
A system and corresponding methods are disclosed for applying a dampening fluid to a reimageable surface of an imaging member in a variable data lithography system, without a form roller. In one embodiment, the system includes subsystems (30) for converting a dampening fluid from a liquid phase to a dispersed fluid phase, and for directing flow of a dispersed fluid comprising the dampening fluid in dispersed fluid phase to the reimageable surface (12). The dampening fluid reverts to the liquid phase directly on the reimageable surface. In another embodiment a continuous ribbon of dampening fluid may be applied directly to the reimageable surface. This embodiment includes a body structure having a port for delivering dampening fluid in a continuous fluid ribbon directly to the reimageable surface, and a mechanism, associated with the body structure, for stripping an entrained air layer over the reimageable surface when the reimageable surface is in motion.