摘要:
A raster output scanner having a recording member, a laser, a total internal reflection type modulator having an array of independently addressable electrodes, optical means cooperable with the laser to provide a sheetlike beam of high intensity radiation at the modulator, the array of electrodes being pulsed in succession with each image pixel to provide wave after wave of imaging or non-imaging beams, a scanning polygon for scanning the imaging beams from the modulator across the recording member line by line, and means for pulsing the modulator electrodes at a speed equal to the speed of the scanning polygon and in a direction opposite to the polygon scanning direction to obviate image blur.
摘要:
An electrostatic voltmeter with a microdeflector probe having a base, a flexible finger supported on the base in cantilever fashion, the finger deflecting in response to a potential difference thereacross, separate driven and variable capacitance electrodes on the finger sensing the charge voltage on the surface to be measured, the pickup electrode being electrically coupled to the driven electrode, the resulting charge voltage on the driven electrode changing finger deflection and altering the capacitive relationship between the base and the variable capacitance electrode; a predetermined reference voltage on the base; and a circuit for converting the change in capacitance between the base and the variable capacitance electrode to a signal representing the voltage on the surface. In an alternate embodiment, a second microdeflector is provided which changes capacitance between base and variable capacitance electrode in response to noise, and a control for adjusting the signal in response to the noise signal.
摘要:
A full width opto-mechanical modulator comprised of a silicon chip have dual rows or arrays of flexible finger-like reflectors disposed thereon in staggered facing relationship to one another. The reflectors, the surface of which is highly reflective, bend in response to the application of a predetermined potential. The modulator is placed in the path of a beam of high intensity light, and potentials applied to selected reflectors in accordance with an image signal input cause the modulator to reflect light striking the individual reflectors in either an exposure path or against a beam stop.
摘要:
A multi-functional multi-engine print platform engines schedules and processes job in order to minimize visibility of image defects. The print platform includes at least two marking engines that process jobs, a marking engine analyzer that determines image quality defects of the at least two marking engines, and a scheduler that creates a plan to process a job with the at least two marking engines based at least on the image quality defects each of the at least two marking engines in order to minimize visibility of the defects in images reproduced by the at least two marking engine.
摘要:
A printing system capable of binding a modified image data to an individual print engine in a multiple print engine system. The system includes an image processor such as a digital front end, a set of transformations, and a configuration of printers. The system can also include a scanner that scans a test image so that this image binding process can be repeated. Furthermore, the transformation binding can also take place in real time.
摘要:
A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color.
摘要:
A multi-mode color copier having a photoreceptor for storing color separated images. The color copier includes a platen input for transmitting color images from an original to the photoreceptor, a raster output scanner for writing on the photoreceptor and a raster input scanner for reading developed color separated images from the photoreceptor. The input to the raster output scanner and the output from the raster input scanner are in the form of digitized video signals which correspond to the color separated images. In addition to outputting video signals through the raster input scanner the copier can create color copies by sequentially transferring developed images from the photoreceptor to a copy sheet and fusing those images to form a permanent color copy.
摘要:
This disclosure provides printing methods, systems and apparatus to compensate for distortions by fusing toner applied to a media substrate. According to one exemplary method, image data is processed according to media characterization data for a toner density value associated with the image. The processed image data compensates for media substrate distortions due to fusing of a printed image on the media substrate.
摘要:
An imaging apparatus includes an input that receives a stream of image pixels such as high addressable bits, multiple bits per pixel or binary image bits representing an input image and a processor that processes and directs signals to an LED bar that selectively exposes areas of a photoreceptor. The exposed areas of the photoreceptor form a latent image, controlled by the processor, of areas of varied exposure based on surrounding pixels. The processor examines the pixels to determine an image structure beneficially adaptable to varied exposure and selects a pixel for varied exposure, such as increased or decreased exposure or altered timing to apply the pixel.
摘要:
A method to compact a diffuse gray edge that is two pixels wide to a state where it is one pixel wide so that it may be well rendered with anti-alias rendering. The method identifies an observation window within continuous tone image data. The method then operates on the pixels within the observation window by: compacting horizontal features within the observation window; compacting vertical features within the observation window; and compacting corner features within the observation window.