Abstract:
In a method for microfluidic printing of colored images on a receiver, including providing a first set of reservoirs containing colorant precursors for different colors; providing at least one reservoir containing a reactant; and reacting the colorant precursors and reactant(s) to provide colored pixels of the desired colors.
Abstract:
A binary pagewidth printhead without substantial grayscale capability includes an array of adjacent printhead segments that are distributed across the pagewidth printhead so that adjacent segments overlap at their ends by a predetermined distance. A plurality of printing pixels extending along each segment have physical differences that effect substantially non-uniform transfer functions that decrease toward the ends of segments over the overlap distance. The physical characteristics of the printing pixels are such the their transfer functions vary linearly over the overlap distance. The physical characteristics of the printing pixels may be such the their transfer functions increase monotonically from a small value at the ends of the printhead segments to a larger value away from the ends of the printhead segments. The physical characteristics of the printing pixels in a central portion of each segment are preferably uniform such the their transfer functions are constant over the central portions. Preferably, the transfer functions applied to adjacent segments are of mirror symmetry.
Abstract:
A microfluidic printing apparatus includes at least one ink reservoir; a structure defining a plurality of chambers arranged so that the chambers form an array with each chamber being arranged to form an ink pixel; a plurality of microchannels connecting the reservoir to a chamber and a plurality of microfluidic pumps each being associated with a single microchannel for supplying ink from an ink reservoir through a microchannel for delivery to a particular chamber. The apparatus detects the ink fluid level in the chambers and for producing a signal, and controls the microfluidic pumps for delivering the correct amount of ink delivered into each chamber and responsive to the ink level signal for causing the pumps to terminate the delivery of ink.
Abstract:
A method for producing an image, the method comprises the steps of: storing a plurality of theme images; storing a plurality of annotations; providing a random number generator for randomly selecting the theme images and annotations; and combining the theme image and the annotation.
Abstract:
Ink jet printing apparatus for forming a plurality of ink images on a receiver and for cutting the receiver to form separate prints of such ink images in response to one or more digital image files each including at least one digital image is disclosed. The ink jet printing apparatus has at least one ink jet print head adapted to deliver ink to the receiver and at least two receiver webs. One or more webs are selectively moved along a first receiver path past the ink jet print head. Control circuitry responds to one or more digital image files for actuating the ink jet print head to form ink images on the web(s) of receiver in a manner that minimizes receiver waste. Actuatable receiver cutter responds to the control circuitry for cutting the receiver across the first receiver path.
Abstract:
Apparatus for forming an image on a receiver in response to a digital image includes print heads for transferring colorant to the receiver. The receivers are stored in a receiver supply device in a humidity controlled environment. A receiver transport mechanism moves the receiver to a position where the print heads transfer colorant to the receiver to form an image on the receiver.
Abstract:
Apparatus for forming durable polymer protection film over a photographic image on a receiver includes an ink jet print head for ejecting a polymer protection fluid which when dried forms a film and the apparatus positions the receiver relative to the ink jet print head and causing the ink jet print head to apply the polymer fluid over the photographic image to form a polymer protection film when the fluid dries for protecting the photographic image.
Abstract:
Ink jet printing apparatus for forming a plurality of ink images on a receiver and for cutting the receiver to form separate prints of such ink images in response to a digital image file including at least one digital image includes at least one ink jet print head adapted to deliver ink to the receiver. The receiver is moved along a first receiver path past the ink jet print head. Control circuitry is responsive to one or more digital image files for actuating the ink jet print head to form a plurality of ink images on the receiver. A first actuatable receiver cutter responds to the control circuitry. The receiver is moved along a second path that is perpendicular to the first receiver path. A second actuatable cutter responsive to the control circuitry is disposed at a predetermined position relative to the second receiver path for sequentially cutting the receiver to form separate prints each having at least one ink image.
Abstract:
Ink jet printing apparatus for forming a borderless image on a receiver in response to a digital image file having a digital image and the desired size of the image to be formed, including an ink jet print bar for delivering ink to the receiver and disposed at an image transfer position. The apparatus moves the receiver along a path onto a platen past the ink jet print bar at the image transfer position; a receiver detector unit disposed adjacent to the path for detecting the leading edge of the receiver prior to its moving to the image transfer position; a receiver cutter for cutting the receiver to an appropriate size; and control circuitry responsive to the digital image file for determining the appropriate size of the borderless image on the receiver and for actuating the ink jet printer to cause an ink image to be formed on the receiver as it moves past the image transfer position and for actuating the receiver cutter to cut the receiver so a borderless image is formed on the receiver.
Abstract:
An inkjet printing apparatus for printing continuous tone images on a receiver in response to a digital image, including a structure defining a plurality of colorant or colorant precursor receiving chambers, and another structure defining at least one mixing chamber for receiving a plurality of microdrops of colorants or colorant precursors from the colorant or colorant precursor receiving chambers to produce a desired colorant. The apparatus further includes a microdrop nozzle for each receiving chamber and in communication with the mixing chamber and a printing nozzle for each mixing chamber for causing a mixed drop to be delivered to the receiver. Further, the ejection of the desired number of microdrops is controlled and in response to the digital image and connected to the receiving chamber and the mixing chamber and for causing the desired number of microdrops to be ejected into the mixing chamber and then ejecting a mixed drop of colorant from the mixing chamber through the printing nozzle to the receiver.