Patent application number | Description | Published |
20080211899 | THERMAL PRINTER WITH AUXILIARY HEAT SINK AND METHODS FOR PRINTING USING SAME - The present invention provides a thermal printer in which the temperature of the thermal printing head can be modulated by means of an auxiliary heat sink, and methods for printing using such a thermal printer. | 09-04-2008 |
20080238967 | PRINT HEAD PULSING TECHNIQUES FOR MULTICOLOR PRINTERS - In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into segments, each of which is divided into a plurality of subintervals. All of the pulses within the segments have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different segments by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head. | 10-02-2008 |
20080266373 | MULTICOLOR THERMAL IMAGING METHOD AND THERMAL PRINTER - A multicolor direct thermal imaging method wherein a multicolor image is formed in a thermal imaging member comprising at least first and second different image-forming compositions and a thermal printer for use in practicing the method. Heat is applied to at least the second image-forming composition while the first image-forming composition is at a first baseline temperature (T | 10-30-2008 |
20090096833 | MULTICOLOR THERMAL IMAGING METHOD AND THERMAL IMAGING MEMBER FOR USE THEREIN - Described herein are methods, devices and reagents for direct thermal imaging and, more particularly, for multicolor direct thermal imaging, wherein a direct thermal imaging member comprising different image-forming compositions is imaged at different speeds by a source of heat to form a multicolored image. | 04-16-2009 |
20090128613 | High Speed Photo-Printing Apparatus - A thermal printer is disclosed which includes a plurality of thermal print heads, each of the plurality of thermal print heads being operable to print a distinct one of a plurality of colors. The plurality of thermal print heads may print output at a plurality of spatial resolutions. The thermal printer may include dot size varying means for varying perceived levels of color printed by the thermal printer by varying sizes of dots printed by the plurality of thermal print heads. The printer may perform various image processing steps on an image to be printed, such as tone scale adjustment, thermal history control, and common mode voltage correction, to improve the perceived quality of the printed image. The thermal printer may be incorporated into a digital photo-printing vending machine for printing images provided by a customer. | 05-21-2009 |
20100016154 | IMAGING SYSTEM - There are disclosed imaging members wherein a chemical compound in a crystalline form is converted, at least partially, and preferably substantially completely or completely, to a liquid in the amorphous form, the liquid having intrinsically a different color from the crystalline form. Also described are imaging methods utilizing the imaging members. The conversion of the compound from the crystalline form to the liquid form can be effected by the application of thermal energy or by other imaging techniques. | 01-21-2010 |
20110018950 | MULTICOLOR THERMAL IMAGING METHOD AND THERMAL PRINTER - A multicolor direct thermal imaging method wherein a multicolor image is formed in a thermal imaging member comprising at least first and second different image-forming compositions and a thermal printer for use in practicing the method. Heat is applied to at least the second image-forming composition while the first image-forming composition is at a first baseline temperature (T | 01-27-2011 |
20110045972 | THERMAL IMAGING MEMBERS AND METHODS - There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form. | 02-24-2011 |
20110050829 | PRINT HEAD PULSING TECHNIQUES FOR MULTICOLOR PRINTERS - In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into segments, each of which is divided into a plurality of subintervals. All of the pulses within the segments have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different segments by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head. | 03-03-2011 |
20110080458 | NOVEL DYES AND USE THEREOF IN IMAGING MEMBERS AND METHODS - There are described novel rhodamine dye compounds and imaging members and imaging methods, including thermal imaging members and imaging methods, utilizing the compounds. The dye compounds exhibit a first color when in the crystalline form and a second color, different from the first color, when in the liquid, amorphous form. | 04-07-2011 |
20110102535 | THERMAL PRINTER WITH AUXILIARY HEAT SINK AND METHODS FOR PRINTING USING SAME - The present invention provides a thermal printer in which the temperature of the thermal printing head can be modulated by means of an auxiliary heat sink, and methods for printing using such a thermal printer. | 05-05-2011 |
20110122213 | TECHNIQUE FOR PRINTING A COLOR IMAGE - A technique for optimizing or enhancing color images. Embodiments are disclosed for creating an enhanced color image, including the enhancement of perceived color uniformity. In a “dot-on-dot” registration scheme for producing color images, the dots need to be precisely superimposed on each other to provide optimum or enhanced images. The dot-on-dot registration produced by a single head thermal printer is generally acceptable, but a single head machine is very slow because multiple passes (reciprocation) are required to lay down multiple colors of dots. In a much faster multi-head or tandem thermal imaging system a serious problem of dot misalignment may cause more patterns or other visual artifacts in the color images produced by dot patterns. A solution to this problem is disclosed herein which intentionally misregisters superimposed dots in a novel and particular manner to achieve image optimization. | 05-26-2011 |
20110189424 | OPTICAL DISC WITH THERMALLY PRINTABLE-SURFACE - An optical disc is described that bears, on one surface, a plurality of color-forming layers that can form a multicolored image when heated in contact with a thermal print head. The color-forming composition comprises color-forming layers and thermally-insulating spacers and is designed such that warping of the optical disc in conditions of changing temperature and humidity is minimized. The compliance of the color-forming composition is such that intimate contact between the thermal print head and the printable surface of the disc can be maintained as one is translated relative to the other. Methods for assembling such an optical disc are provided. | 08-04-2011 |
20120008188 | MULTI-COLOR ELECTRO-OPTIC DISPLAYS - An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another. | 01-12-2012 |
20120075401 | PRINT HEAD PULSING TECHNIQUES FOR MULTICOLOR PRINTERS - In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into segments, each of which is divided into a plurality of subintervals. All of the pulses within the segments have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different segments by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head. | 03-29-2012 |
20120134009 | MULTI-COLOR ELECTROPHORETIC DISPLAYS - An electrophoretic display ( | 05-31-2012 |
20120169824 | MULTICOLOR THERMAL IMAGING METHOD AND THERMAL PRINTER - A multicolor direct thermal imaging method wherein a multicolor image is formed in a thermal imaging member comprising at least first and second different image-forming compositions and a thermal printer for use in practicing the method. Heat is applied to at least the second image-forming composition while the first image-forming composition is at a first baseline temperature (T | 07-05-2012 |
20120257269 | TETRACHROMATIC COLOR FILTER ARRAY FOR REFLECTIVE DISPLAY - A tetrachromatic color filter array comprises multiple pixels, each of which comprises first, second, third and fourth sub-pixels having first, second, third and fourth hues, P | 10-11-2012 |
20120293858 | ELECTRO-OPTIC DISPLAYS - A wavelength selective reflection display ( | 11-22-2012 |
20130059726 | THERMAL IMAGING MEMBERS AND METHODS - There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form. | 03-07-2013 |
20130278900 | ILLUMINATION SYSTEMS FOR REFLECTIVE DISPLAYS - A display device ( | 10-24-2013 |
20140055841 | MULTI-COLOR ELECTRO-OPTIC DISPLAYS - An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another. | 02-27-2014 |
20140187418 | MULTICOLOR THERMAL IMAGING METHOD AND THERMAL PRINTER - A multicolor direct thermal imaging method wherein a multicolor image is formed in a thermal imaging member comprising at least first and second different image-forming compositions and a thermal printer for use in practicing the method. Heat is applied to at least the second image-forming composition while the first image-forming composition is at a first baseline temperature (T | 07-03-2014 |
20140292830 | METHODS FOR DRIVING ELECTRO-OPTIC DISPLAYS - Methods for driving electro-optic displays, especially bistable displays, include (a) using two-part waveforms, the first part of which is dependent only upon the initial state of the relevant pixel; (b) measuring the response of each individual pixel and storing for each pixel data indicating which of a set of standard drive schemes are to be used for that pixel; (c) for at least one transition in a drive scheme, applying multiple different waveforms to pixels on a random basis; and (d) when updating a limited area of the display, driving “extra” pixels in an edge elimination region to avoid edge effects. | 10-02-2014 |
20140340430 | COLORED ELECTROPHORETIC DISPLAYS - An electrophoretic medium comprises a fluid and at least one species of particles disposed, When a first addressing impulse is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field. | 11-20-2014 |
20140362131 | COLOR ELECTRO-OPTIC DISPLAYS - A color filter array or a backplane for a color display has first and second areas with substantially different optical properties. The invention also provides a color filter with a low resistivity. The invention further provides a color display utilizing fluorescent or phosphorescent material. | 12-11-2014 |
20150015932 | ELECTRO-OPTIC DISPLAY WITH CONTROLLED ELECTROCHEMICAL REACTIONS - An electro-optic display has a viewing surface through which a user views the display, a bistable, non-electrochromic electro-optic medium, and at least one electrode arranged to apply an electric field to the electro-optic medium, the display. The display comprises at least 10 micromoles per square meter of the viewing surface of at least one redox compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8. | 01-15-2015 |