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Class 347/128 - Including driving circuitry


Subclass of Class 347 - Incremental printing of symbolic information
Definition: Subject matter comprising electrical means, for operating
No. of patents: 74
Last issue date: 12/11/2007


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NumberTitleIssue Date
7306216Power 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
7277106Scanning apparatus having a fluorescent lamp and control method thereof
A scanning apparatus having a cold cathode fluorescent lamp includes a central processing unit (CPU) controlling a scan unit to be in one of the stand-by mode, a scan mode and a sleep mode and outputting a PWM signal having a variable duty ratio based on an operatio...
10/02/2007
7157704Corona discharge electrode and method of operating the same
A method of operating a corona discharge device includes producing a high-intensity electric field in an immediate vicinity of at least one corona electrode and continuously or periodically heating the corona electrode to a temperature sufficient to mitigate an unde...
01/02/2007
7148995Printing adjustment system and method
A printing adjustment method includes providing a plurality of solid and screened density values produced by a proofing device that represent intended density values. The method also includes providing a plurality of solid and screened density values produced by a p...
12/12/2006
7084486Uni-directional PIN or NIP conducting low capacitance transient voltage suppressors and steering diodes
A device for protecting I/O lines using PIN or NIP low capacitance transient voltage suppressors and steering diodes are disclosed. In an exemplary embodiment, a two (2) terminal device with a unidirectional low capacitance TVS diode (1101) and an anti-parall...
08/01/2006
7080901Printing unit and manufacturing line for manufacturing flexible organic EL display
A printing unit include a plurality of ink supply members for supplying inks different from each other to a printing area or printing area-like portion, and a plurality of detecting systems, each detecting an amount of the corresponding ink accumulated on the printi...
07/25/2006
7039377Switchable gain amplifier
A switchable gain amplifier for use in mobile communications devices is provided, having a first amplifier stage having a first gain, a second amplifier stage connected in parallel with the first amplifier stage. The first and second amplifier stage have different g...
05/02/2006
7009831PIN or NIP low capacitance transient voltage suppressors and steering diodes
Unidirectional and bi-directional low capacitance transient voltage suppressors (“TVS”) and steering diodes are disclosed. In one embodiment, the TVS comprise TVS p-n junction diode element(s), (101) low-capacitance (“LC”) PIN or NIP diode element(s) ...
03/07/2006
6417875Adjustable voltage finger driver
The present invention provides a method and a circuit for driving control electrodes between a reset voltage and an adjustable extraction voltage. The circuit includes a reset switch having first and second terminals with the first terminal being connecte...
07/09/2002
6404451Adjustable voltage finger driver
The present invention provides a method and circuit for driving control electrodes between a reset voltage and an adjustable control voltage. The circuit includes a reset switch capable of assuming a first state and a second state, the reset switch includ...
06/11/2002
6278470Energy efficient RF generator for driving an electron beam print cartridge to print a moving substrate
An electron beam printer assembly for operating a standard electron beam print cartridge (such as an eighteen inch 600 DPI print cartridge) includes an RF generator which has a powdered iron core transformer, and a dual pulse width generator operatively c...
08/21/2001
6252620Image recording apparatus and image recording method
An image recording apparatus and an image recording method enable high density and without blank space between pixels printed on a recording medium to be printed. The image recording apparatus comprises a multi-hole photoreceptor provided with a transpare...
06/26/2001
6239823Electrostatic latent image forming printhead having separate discharge and modulation electrodes
Improved electrostatic latent image charge generator consisting of generator electrodes substantially in contact with one side of a first solid dielectric member; a discharge electrode substantially in contact with the other side of the solid dielectric m...
05/29/2001
6166821Self calibrating pulse width modulator for use in electrostatic printing applications
An arrangement for producing a variable width pulse is disclosed for use in an electrostatic printing mechanism which is adapted to produce grayscale intensity of a pixel to be printed based on predetermined digital data. The variable width pulse is forme...
12/26/2000
6163328High frequency RF driver
A device for providing an RF signal burst to an external load includes a voltage-controlled oscillator to generate a drive signal having a frequency fVCO fixed by an oscillator control signal. An RF driver stage coupled to the external load rec...
12/19/2000
6081286Method and apparatus for high speed charge image generation
An apparatus for high-speed charge latent image generation which employs two or more charge generating matrix sets. These matrix sets are electrically connected so that image charges are simultaneously generated from each set. Charge from the matrix sets ...
06/27/2000
5821970Color image forming apparatus
In a color image forming apparatus, a plurality of color images of component colors are combined to form a full color image. These images of the component colors are overlapped on an intermediate recording medium, and are then transferred to a transfer me...
10/13/1998
5798782Printing or writing device for controlled application of charge carriers to a substrate
Marking device for controlled application of charge carriers to a substrate includes a charge carrier source for generating the charge carriers, a voltage source having a first pole and a second pole connected to the charge carrier source and forming ther...
08/25/1998
5687001Halftone image ion printer
The invention makes it possible to drive a halftone image device and achieve high halftone reproduction by allowing at least one of the leading and trailing edges of a pulse width-modulated signal applied to a recording head, or forming amplitude- and wid...
11/11/1997
5646669Corrosion resistant electrostatic recording head with multiple layers
An electrostatic recording head comprises an insulating substrate having a builtup structure thereon. The builtup structure includes, in the following order, a plurality of dielectric electrode strips having portions which are arranged in parallel to and ...
07/08/1997
5559544Image forming apparatus with cooperating housing structure
In an image forming apparatus, an aperture electrode member, a toner supply device, a fixing device, a main power source and a main base plate are mounted to a main body case while a back electrode roller is disposed on a lid member. When the lid member i...
09/24/1996
5404157Apparatus for generating ions in solid ion recording head with improved stability
A solid ion recording head using an ion generation device, capable of realizing a uniform and stable recording and a compact physical configuration. The head includes a head support member in substantially rectangular cross sectional shape for supporting ...
04/04/1995
5404159Image forming apparatus having toner particle modulator with elliptical aperture
An image forming apparatus capable of forming an image with a high-resolution. The image forming apparatus comprises an aperture electrode wherein toner particles are controlled so as to pass through each of the apertures or not so as to pass through each...
04/04/1995
5402158Method for improving the printing quality and repetition accuracy of electrographic printers and a device for accomplishing the method
A latent electrical charge pattern of electrical signals is produced by an electrode matrix. Apertures between the electrodes are opened and closed, respectively, to expose electric fields for the attraction of pigment particles of toner against an inform...
03/28/1995
5394176Electrostatic printing apparatus
An electrostatic printing apparatus is arranged to generate an electrostatic latent image on an image supporting medium having an insulating releasing layer and a resin thin film layer formed successively on an electrically conductive substrate, to genera...
02/28/1995
5369427Electrostatic recording head
The electrostatic recording head includes an air introducing path for introducing an air, an ion exhaust path, an array of a large number of pin electrodes provided near the ion exhaust path within the air introducing path, an opposing electrode disposed ...
11/29/1994
5357274Image recording apparatus with a vibrating particle controller
In an image recording apparatus for recording an image on an image recording medium, a particle controller having at least one aperture receives electrically charged particles and selectively allows the electrically charged particles to pass through the a...
10/18/1994
5355127Method and apparatus for transferring information by utilizing electron beam
In a method and apparatus for transferring information in a form of electron beam, an electron beam detector detects the electron beam, and emission of the electron beam from a predetermined electron beam source is controlled in accordance with a signal f...
10/11/1994
5343234Digital color proofing system and method for offset and gravure printing
A proofing system incorporates an image member having a dielectric surface and a write head for writing a pattern of electrostatic image dots on the surface. A controller is provided for controlling the write head in response to digital data representing ...
08/30/1994
5325121Method and apparatus for correction of focusing artifacts in ionographic devices
An ionographic printing system including an imaging member with a charge retentive surface on which a latent image may be formed; a printhead including a source of ions, means for moving ions from the source to the charge retentive surface in a continuous...
06/28/1994
5325120Electrostatic reproduction apparatus having a dielectric ink-phobic imaging member and field-emission write head
A copier includes an image member having a dielectric surface and a write head for writing a pattern of electrostatic image dots on the surface. A controller controls the writing head in response to digital data representing an original document so that t...
06/28/1994
5270742Image forming apparatus for forming electrostatic latent image using ions as medium, with high-speed driving means
In an image forming apparatus for forming a static latent image using ions as a medium, an ion generation formed by stacking a plurality of line electrodes, a plurality of finger electrodes, and a screen electrode with dielectric layers being sandwiched t...
12/14/1993
5270729Ionographic beam positioning and crosstalk correction using grey levels
The Ionographic Beam Positioning And Crosstalk Correction Using Grey Levels is a method and apparatus which solves the problem of poor density and definition of an image formed by an ion current (20) projected from an ionographic print head (10), caused b...
12/14/1993
5258782Device for removing charge from a dielectric member in an image forming apparatus
A device is provided which is capable of removing the charge of a recording medium, even a low charge. The recording medium has an electrically-conductive layer and dielectric layers, and is used for forming a toner image by an image forming apparatus. Th...
11/02/1993
5239318Finger driver and printer
A driver for the finger electrodes in a charge-deposition print cartridge controls the finger potential between a printing and a non-printing state. All fingers are reset at once by a common power source, to which each is connected by a diode. Charge stor...
08/24/1993
5231427Image recording apparatus
Electrostatic image recording apparatus employing multi-apertured particle modulator is disclosed. The image recording apparatus receives digital electric image signals from an external device, such as a host computer, at a plurality of levels representat...
07/27/1993
5170189Electrostatic latent image forming device with integral feeder terminal connection
Electrostatic latent image forming device includes a first insulating base plate, a plurality of first electrodes and a plurality of second electrodes disposed to form a matrix with a second insulating base plate interposed therebetween. Each of the secon...
12/08/1992
5159358Divided screen printer
A printer has a print cartridge with a plurality of electrically isolated screen electrodes extending in parallel strips and maintained at different potentials to define a uniform electric field in the gap between a print cartridge and a latent imaging me...
10/27/1992
5138348Apparatus for generating ions using low signal voltage and apparatus for ion recording using low signal voltage
An apparatus for ion recording using an apparatus for generating ions which can be operated by a low signal voltage. The corona ions are controlled either by imposing the low signal voltage which changes the voltage level of the corona ion generation sect...
08/11/1992
5130727Feedback scheme for ionographic calibration
The present invention is a method and apparatus which solves the problem of rapidly calibrating to a uniform value, the ion current (i) associated with each modulation electrode (50) of a print array (40) in an ionographic printing head (10). The calibrat...
07/14/1992
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