Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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 |
| 8164606 | Exposure apparatus In an exposure apparatus employing an over filled optical system, the light quantity distribution on a scanning plane is kept nearly constant for a plurality of scanning light quantities. It selects the light quantity of the light beam irradiated onto the photosensi... | 04/24/2012 |
| 8159513 | Image forming apparatus and control method for same An image forming apparatus includes a light beam generation unit, a light deflector having a resonance frequency and deflecting a light beam, a photosensitive member to which the deflected light beam is irradiated, and a driving control unit driving and controlling ... | 04/17/2012 |
| 8031214 | Line head and image forming apparatus incorporating the same In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming ... | 10/04/2011 |
| 7834897 | Optical scanning apparatus, control method of such apparatus, and image forming apparatus An optical scanning apparatus in which an exposing signal is generated from pattern data indicating a position to be exposed by a light beam on a surface-to-be-scanned. A corrected exposing signal is generated by varying the width of pulses of the exposing signal in... | 11/16/2010 |
| 7808516 | Image forming apparatus An image forming apparatus includes a photosensitive drum, a charging apparatus arranged to charge the photosensitive drum, and a developing apparatus arranged to supply toner to an electrostatic latent image in a development region, thereby developing the electrost... | 10/05/2010 |
| 7733360 | Line head and image forming apparatus incorporating the same In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming ... | 06/08/2010 |
| 7719555 | Line head and image forming apparatus incorporating the same In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming ... | 05/18/2010 |
| 7719554 | Line head and image forming apparatus incorporating the same In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming ... | 05/18/2010 |
| 7701477 | System and method for scaling data to compensate for slanted scanning on a bidirectional scanning laser printer A scanning system is adapted to scan an image beam across a photoconductive surface. The scanning system includes an oscillating mirror and is operable to generate an image beam and to reflect the image beam off the oscillating mirror to bidirectionally scan the ima... | 04/20/2010 |
| 7675532 | Image-forming apparatus and control method thereof An image-forming apparatus sets a DAC output voltage 1602, a VI conversion current ID 1603, and a laser current IL 1604 using a correction profile 1601, and performs density nonuniformity correction that addresses various factors contribu... | 03/09/2010 |
| 7663654 | Image formation device and method for correcting periodic variations An image-forming device which is equipped with an image-holding member, an exposure section provided with plural light-emitting portions arranged in a first direction, a movement section that relatively moves the exposure section and the image-holding member in a se... | 02/16/2010 |
| 7538784 | Line head and image forming apparatus incorporating the same In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming ... | 05/26/2009 |
| 7443413 | Laser diode modulator and method of controlling laser diode modulator A method for adjusting a laser diode drive current pulse, comprises providing a power correction table comprising drive current pulse correction factors corresponding to counter positions. The method also comprises providing a jump table comprising counter position ... | 10/28/2008 |
| 7425972 | Method and system for improved control of xerographic parameters in a high quality document system A system changes the setpoint of a digital reprographic system in response to the local image content by utilizing tag data that contains information identifying the image content type of a corresponding image data pixel. The system modifies the reproduction charact... | 09/16/2008 |
| 7425971 | Line head and image forming apparatus incorporating the same In a line head, a plurality of element arrays arranged in a first direction. Each array includes a plurality of light emission elements arrayed in a second direction which is perpendicularly to the first direction. The light emission elements emit light for forming ... | 09/16/2008 |
| 7415226 | Image formation apparatus and image formation method In an image formation method of an image formation apparatus for correcting uneven image formation on the basis of vibration property information corresponding to an operation sequence in image formation, vibration property information corresponding to a plurality o... | 08/19/2008 |
| 7382387 | Image forming apparatus and image density correction device An image forming apparatus, having a submodule that causes non-uniformity in density in a slow-scanning direction in accordance with rotation, includes a correction image forming unit that forms an image for density correction, in cooperation with the submodule, a d... | 06/03/2008 |
| 7356273 | Image forming apparatus with switched-potential responsive to attenuation of a remaining voltage An image forming apparatus changes over an electric potential on an image bearing member in response to an attenuation region in which a remaining potential on an image bearing member attenuates after a developing bias applied to the developing member has been turne... | 04/08/2008 |
| 7356186 | Digital representation of audio waveforms using peak shifting to provide increased dynamic range A system allows greater dynamic range in fixed-width sample representations of waveforms. Known properties of the waveform are used to determine an unlikely, or impossible, data condition to be used as an exception condition. Samples following the exception conditio... | 04/08/2008 |
| 7343109 | Electrophotographic printer having developer and transfer bias control An image forming apparatus including: a developing device that develops an electrostatic latent image formed on an image bearing body into a visible image by using a charged developer, so as to form a developer image on the image bearing body; a developing-bias supp... | 03/11/2008 |
| 7333121 | System and method for scaling data to compensate for slanted scanning in a bidirectional scanning laser printer A scanning system is adapted to scan an image beam across a photoconductive surface. The scanning system includes an oscillating mirror and is operable to generate an image beam and to reflect the image beam off the oscillating mirror to bidirectionally scan the ima... | 02/19/2008 |
| 7323720 | Light-emitting device, image forming apparatus, and electronic apparatus with an integrated circuit mounted on a substrate A light-emitting device includes a substrate having a plurality of light-emitting elements and a light emission region arranged on one surface thereof, light being emitted from one surface of the light emission region; and an integrated circuit chip that generates s... | 01/29/2008 |
| 7306216 | Power transmitting apparatus, power switching apparatus, and driving apparatus of multi-function machine using the same A driving apparatus of a multi-function machine includes a scanner unit scanning data recorded on a sheet of document and a document transport part to transport the sheet of document. A printer unit prints data on a sheet of paper for an output and includes a carrie... | 12/11/2007 |
| 7292258 | Multibeam scanning optical apparatus and multibeam image forming apparatus A multibeam scanning optical apparatus incluses a controller which specifies laser diodes which are emitting light normally and arranged in a continuous row, a memory having a plurality of area in which image data are stored, a write-in controller which causes image... | 11/06/2007 |
| 7283143 | Measurement and control of high frequency banding in a marking system A method of measuring and controlling high frequency banding, the method includes creating a test pattern, sensing the test pattern with optical sensors, determining a beat frequency based on the sensed test pattern, and determining the frequency, phase and amplitud... | 10/16/2007 |
| 7280132 | Method and device for imaging a printing form A method for imaging a printing form (10) using at least one controllable light source (42) is described, a number of image spots (20) being generated at a number of positions on the printing form (10) in accordance with image data in a b... | 10/09/2007 |
| 7274884 | Image forming apparatus to which a cartridge having a memory medium configured to store information-forming-condition information is attachable, such a cartridge, such a memory medium, and an image forming system comprising such a memory medium An image forming apparatus to which a cartridge is mountable and which is operable to form images at different image formation speeds, wherein the cartridge includes a memory medium having a memory area for storing information relating to image forming conditions of... | 09/25/2007 |
| 7268797 | Image forming apparatus and method of controlling same One scanning interval of a laser beam is divided into a plurality of blocks, correction data, which corresponds to optical characteristics of an optical unit placed between a laser element and a photosensitive drum, is stored in memory in association with each block... | 09/11/2007 |
| 7262895 | Determining operating point of feedback controller applied to operation of oscillating scanning device A method for determining an operating point of an oscillation controller. The method builds a model of an oscillation device based upon its design parameters. Then the resonant frequency of each specific oscillator is measured in its application environment, and the... | 08/28/2007 |
| 7259774 | Method and device for imaging of a printing form A method for imaging a printing form, in which a laser (140) generates a sequence of pulses (172, 220) of electromagnetic radiation corresponding to the image information of an image area (200, 202, 204, 206) to be generated on the printing form... | 08/21/2007 |
| 7242416 | Optical head An optical head that forms latent images on a photosensitive material by a multiple-exposure method is driven at higher speed. This optical head comprises a plurality of light emitting elements arranged in a specific direction, a storage unit for receiving and stori... | 07/10/2007 |
| 7224503 | Optical scanning apparatus and image forming apparatus using the same Disclosed is an optical scanning apparatus for repeatedly optically scanning a plurality of surfaces to be scanned, including: a plurality of light sources; an optical deflector for deflecting and reflecting a plurality of light beams emitted from the plurality of l... | 05/29/2007 |
| 7224380 | Light-emitting device driver and image forming apparatus A light-emitting device driver that includes a driver unit that drives a light-emitting device, a compensator that compensates for at least one of the rising and falling responses of the driver unit, a switching unit that switches on and off the compensator, and a c... | 05/29/2007 |
| 7221464 | Image recording apparatus and test pattern for evaluating recorded image The invention concerns an image recording apparatus suitable for forming a medical image that is used for a medical diagnosis, and a test pattern for evaluating a quality of the medical image. The image recording apparatus includes a printing section to either the m... | 05/22/2007 |
| 7215348 | Image formation device and image formation method Image data are inputted from a data processing means (23) into storage means (24) so that light emitting elements on one line (28a) of a light emitting element (yellow) line head (28) are actuated according to signal outputted from... | 05/08/2007 |
| 7206012 | Memory device on optical scanner and apparatus and method for storing characterizing information on the memory device An optical scanner is provided having a memory device thereon. The memory device may store operational characteristics of the optical scanner or data that characterizes laser beam scan path and/or laser power requirements by each laser of the optical scanner. The me... | 04/17/2007 |
| 7206015 | Light emitting device driver for driving light emitting device and integrated circuit thereof An integrated circuit includes a light emitting device and a light emitting device driver coupled to the light emitting device. The light emitting device driver is for generating a drive signal to drive the light emitting device to emit light. A light emitting devic... | 04/17/2007 |
| 7202974 | Efficient under color removal A method of performing color space conversion and under color removal. Pixelated data is first resampled (102) to an efficient word size—typically 8-bits wide. The RGB color format data words are then subtracted from a maximum intensity to yield CMY color f... | 04/10/2007 |
| 7185816 | Bar code and method of forming a bar code having color for encoding supplemental information A barcode symbol having an encoded symbology is provided with color or shades of gray to add additional information at the time of printing. The color or shades of gray provides the current barcode symbology with a third dimension of information. The color or shades... | 03/06/2007 |
| 7145588 | Scanning optical printhead having exposure correction A printing apparatus 10 exposes an image onto a photosensitive medium 14, having a printhead 20 with a linear array of exposure sources 40, each exposure source 12 operable at a variable intensity. A shuttle mechanism 16 mov... | 12/05/2006 |
