Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8077332 | Bit-map decompression Writing a decompressed bit-map cell in accordance with a pixel count and a fill order pattern based on half-tone threshold values of a half-toned bit-map compression cell that was used to determine the pixel count. ... | 12/13/2011 |
| 7576885 | Balancing grays on color printers A gray balancing technique wherein color data values are modified only if the color data values include a gray component. ... | 08/18/2009 |
| 7413299 | Pressurizing a heatable printhead while it cools A method of operating a drop generating printhead including heating the printhead, providing melted phase change ink to the printhead, allowing the printhead to cool, and while the printhead is cooling, pressurizing the phase change ink in the printhead with a press... | 08/19/2008 |
| 7405393 | Position encoder An optical encoder that includes an optical grating and a quadrature optical encoder sensor that move relative to each other. The optical grating includes a first encoder bar and a plurality of second encoder bars, wherein the first encoder bar is optically configur... | 07/29/2008 |
| 7380920 | Ink jet apparatus A container including a first tank for receiving a liquid, a second tank that is selectively pressurizable, a check valve for permitting fluid flow from the first tank to the second tank, and a manifold structure having a first port fluidically coupled to the first ... | 06/03/2008 |
| 7375849 | Balancing grays on color printers A gray balancing technique wherein gray balancing curves are determined by interpolating the primary color data values of color samples to determine discrete combinations of primary colors that substantially match predetermined targets, and performing a curve fittin... | 05/20/2008 |
| 7222937 | Drop generating apparatus A drop emitting device including a first linear array of columnar arrays of first nozzle pairs and a second linear array of columnar arrays of second nozzle pairs, wherein the first linear array and the second linear array extend along an X-axis, and wherein the sec... | 05/29/2007 |
| 7209145 | Color device profile having a buffered look-up table A color device profile including a buffered color look-up table having outermost nodes that replicate nodes of an inner portion that are closest to the outermost nodes, and input tonal reproduction curves having a range that is smaller than an input range associated... | 04/24/2007 |
| 7143488 | Drop emitting apparatus A drop emitting device that includes a fluid channel layer, a diaphragm layer having a laser ablated bonding region, and a plurality of electrical components attached to the laser ablated bonding region. ... | 12/05/2006 |
| 7137692 | Ink jet apparatus A fluid reservoir apparatus including first and second opposing thermally conductive walls, an elastomeric heater compressed between the first and second opposing thermally conductive walls, wherein the elastomeric heater has an uncompressed thickness that is greate... | 11/21/2006 |
| 7117572 | Method of making a drop emitting device A method of making a drop emitting device that includes a fluid channel layer, a diaphragm layer having a laser ablated bonding region, and a plurality of electrical components attached to the laser ablated bonding region. ... | 10/10/2006 |
| 7055939 | Drop generator A drop generator that includes a pressure chamber and an outlet channel that includes a circular outlet channel section and a non-circular outlet channel section. ... | 06/06/2006 |
| 7048349 | Color printing A method of printing including replacing each of black dots of a first subset of black dots of a bit map for a predetermined area with a process black dot, adding a non-black dot to each of black dots of a second subset of black dots of the bit-mapped data, and prin... | 05/23/2006 |
| 7048361 | Ink jet apparatus A drop emitting apparatus including a diaphragm layer disposed on a fluid channel layer, a roughened bonding region formed on a surface of the diaphragm layer, a thin film circuit having conformal raised contact regions disposed on the bonding region, and a pluralit... | 05/23/2006 |
| 7040730 | Color printing A method of printing including changing each process black dot and each black plus non-black dot of a halftoned bit map to a black dot, if each of first and second adjacent dots on either side of such process black dot or black plus dot along a predetermined axis co... | 05/09/2006 |
| 7021733 | Ink jet apparatus A drop emitting device that includes a drop generator and a drive signal waveform that includes in sequence a pulse of a first polarity, a first pulse of a second polarity, a delay interval, and a second pulse of the second polarity. ... | 04/04/2006 |
| 6979800 | Heater A heater including a plurality of first dielectric vanes and a plurality of second dielectric vanes arranged about a longitudinal axis, each first dielectric vane and second dielectric vane having a plurality of wire guiding grooves, a heater wire structure wound ar... | 12/27/2005 |
| 6972403 | Position encoder An optical encoder that includes an optical grating and a quadrature optical encoder sensor that move relative to each other. The optical grating includes a first encoder bar and a plurality of second encoder bars, wherein the first encoder bar is optically configur... | 12/06/2005 |
| 6969146 | Drop generating apparatus A drop emitting device including a first linear array of columnar arrays of first nozzle pairs and a second linear array of columnar arrays of second nozzle pairs, wherein the first linear array and the second linear array extend along an X-axis, and wherein the sec... | 11/29/2005 |
| 6955419 | Ink jet apparatus A drop emitting apparatus including a diaphragm layer disposed on a fluid channel layer, a thin film circuit having raised contact regions disposed on the diaphragm layer, and a plurality of electromechanical transducers conductively attached to the raised contact r... | 10/18/2005 |
| 6871928 | Selective enhancement of black A technique for selective enhancement of black including printing a non-black color at pixel locations identified by a candidate pixel array and which correspond to marked pixels in a predetermined pixel pattern, wherein the candidate pixel array comprises a plurali... | 03/29/2005 |
| 6857715 | Ink jet apparatus A drop emitting device that includes a drop generator and a drive signal waveform that includes in sequence a first pulse of a first polarity, a pulse of a second polarity and a second pulse of the first polarity. ... | 02/22/2005 |
| 6857722 | Drop generating apparatus A drop emitting device including a linear array of first finger manifolds interleaved with a linear array of second finger manifolds to form a composite linear array of finger manifolds. The composite linear array of finger manifold extends along an X-axis, and the ... | 02/22/2005 |
| D500073 | Print drum maintenance unit | 12/21/2004 |
| 6824241 | Ink jet apparatus A drop emitting apparatus that includes an ink jet printhead, a plurality of on-board ink reservoirs for supplying ink to the ink jet printhead, a plurality of remote ink containers, a plurality of ink supply conduits fluidically connected between the remote ink con... | 11/30/2004 |
| 6799830 | Drop generating apparatus A drop emitting device including a first linear array of columnar arrays of first nozzle pairs and a second linear array of columnar arrays of second nozzle pairs wherein the first linear array and the second linear array extend along an X-axis, and wherein the seco... | 10/05/2004 |
| 6799912 | Selective enhancement of black A printing technique wherein pixel locations that are requested to be marked with only black are identified, black is applied to the identified pixel locations, and non-black color is applied to those identified pixel locations that (A) have an associated black half... | 10/05/2004 |
| 6742870 | Selective enhancement of black A printing technique wherein pixel locations that are requested to be marked with only black are identified, black is applied to the identified pixel locations, and non-black color is applied to a subset of the identified pixel locations that correspond to on-pixels... | 06/01/2004 |
| 6739690 | Ink jet apparatus A drop emitting device that includes a drop generator and a drive signal waveform that includes in sequence a first negative pulse, a positive pulse and a second negative pulse. ... | 05/25/2004 |
| 6557973 | Print mode for full bleed A method of ink jet printing wherein at least one row of pixels adjacent a leading edge of a print medium and/or trailing edge of the print medium is printed using a print mode that employs fewer passes than the print mode utilized for printing rows that ... | 05/06/2003 |
| 6447089 | Techniques for using a linear array to detect media top/bottom edges for full bleed printing Printing apparatus that employs a media detect switch and a linear optical detector to accurately detect the leading edge or trailing edge of a print medium to modify print data so that printing does not extend off the print medium beyond the leading edge... | 09/10/2002 |
| 6439697 | Dynamic memory based firing cell of thermal ink jet printhead A dynamic memory based integrated circuit ink jet firing cell that includes a heater resistor, a drive transistor, and a dynamic memory circuit for storing firing data only for such heater resistor. Also disclosed is an integrated circuit firing array tha... | 08/27/2002 |
| 6422676 | Compact ink jet printhead A compact thermal ink jet printhead including a printhead substrate, a plurality of side by side columnar arrays of drop generators formed in the printhead substrate, and drive circuits formed in the printhead substrate for energizing each ink drop genera... | 07/23/2002 |
| 6398041 | Snap system for retaining slide mounted rack system into multiple racks without tools A latch for retaining a rack slide mounted computer in a rack system. The latch includes a resiliently bendable latch arm having catches configured for engagement with a column flange of a computer rack system.... | 06/04/2002 |
| 6361157 | Long-life spring-backed fluid interconnect seal An ink jet printing apparatus that includes a spring-backed fluid interconnect seal that provides a seal between an ink handling component and an ink pipe that is attached to the ink handling component. The spring-backed fluid interconnection seal more pa... | 03/26/2002 |
| 6350018 | Ink jet drop ejection architecture for improved damping and process yield An ink jet printhead that includes a thin film substructure having heater resistors formed therein, an ink barrier layer disposed one the thin film substructure, a plurality of ink chambers formed in said ink barrier, a plurality of ink channels respectiv... | 02/26/2002 |
| 6328442 | Particulate filtering muffler An ink jet printing system having a vacuum hold down, a vacuum source, and a particulate filtering muffler for trapping ink aerosol particles and muffling noise produced by the vacuum source.... | 12/11/2001 |
| 6318827 | Method of improving print quality by selectively changing print direction An ink jet printer wherein unidirectional or bidirectional printing is adaptively selected for predetermined print modes as a function of whether bidirectional alignment has been performed.... | 11/20/2001 |
| 6315389 | Printhead having different center to center spacings between rows of nozzles An ink jet printhead having a plurality of columnar arrays of ink drop generators that have different center to center spacing along a reference axis. The ink jet printhead further includes ink feed slots that are each fluidically connected to only one co... | 11/13/2001 |
| 6314216 | Resistor array with position dependent heat dissipation A thermally actuated fluidic optical switching circuit that includes a heater substructure having heater resistors and thermally conductive regions associated with the heater resistors and configured to tailor the thermal characteristics of the heater sub... | 11/06/2001 |
