Match Document Document Title
7625068 Spring of nozzles of a printhead of an inkjet printer  
A printhead for an Inkjet Printer is disclosed. The printhead has a large number of nozzle assemblies. Each nozzle assembly has an inkjet nozzle having an actuator for ejecting an ink droplet from...
7625067 Nozzle assembly for an inkjet printer having a short drive transistor channel  
A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element...
7625055 Liquid droplet ejection apparatus  
A liquid droplet ejection apparatus includes a conveyor unit that conveys a recording medium, liquid droplet ejection head that records an image by ejecting liquid droplets onto the recording...
7625054 Speedstick charging by speed  
A printer ( 100 ) has or obtains information from one or more of its components, the information being related to the performance of the relevant component. The performance level of the entire...
7625053 Ink jet recording apparatus  
An ink jet recording apparatus comprises an ink jet recording head in which a volume of a pressure chamber is caused to vary by deflecting actuators according to drive signals applied between an...
7623254 Systems and methods for detecting inkjet defects  
A method for testing inkjets for defects in an inkjet device includes determining, based on the likelihood that one or more inkjets are defective, whether to perform an inkjet defect test, The...
7621617 Ink droplet detection apparatus  
An ink droplet detection apparatus containing: a plurality of nozzle lines each containing multiple nozzles which eject ink droplets; a beam radiator for radiating a detection beam so as to cross a...
7621616 Ink jet recording apparatus and method and program for checking nozzles thereof  
A recording head includes an ink-discharging surface and nozzles. The ink-discharging surface is provided with ink-discharging ports of the nozzles. A light-emitting element and a light-receiving...
7621613 Ink-jet recording apparatus and recording method for realizing satisfactory recording even when ink temperature is suddenly changed  
An ink-jet recording apparatus detects a temperature of an ink-jet head, and reads, from a table of set drive voltages, a drive voltage corresponding to that head temperature. The read drive...
7618107 Printer with rotated ejection nozzle correction  
A printer is provided having a printhead and controller. The printhead has a plurality of printhead modules each having a plurality of ejection nozzles. The nozzles of at least one of the printhead...
7618106 Liquid ejection head control method and liquid ejection head control apparatus  
The negative influence of noise is reduced. A liquid ejection head control method involves (A) simultaneously generating a first drive signal and a second drive signal in a particular period, (B)...
7614717 Pen fault check circuit for ink jet printer  
A pen fault check circuit for an ink jet printer that includes a comparator that further includes a pen signal input, and a switch array coupled to the pen signal input, where the switch array...
7614714 Liquid application device and ink jet recording apparatus  
The present invention provides an inkjet recording apparatus and a recording apparatus capable of reducing wear of a roller for application, even if liquid (for example, application liquid) is...
7611214 Liquid ejecting apparatus  
A liquid ejecting apparatus includes: a head having a nozzle; a pressure-changing unit for changing pressure of liquid in the nozzle in such a manner that the liquid is ejected from the nozzle; a...
7607773 Inkjet recording apparatus  
The inkjet recording apparatus comprises: a head which ejects ink droplets of light-curable ink to a print medium to form an image on the print medium; a light irradiating device which is located...
7604311 Droplet ejection device and droplet ejection method  
In a droplet ejection device, a latch circuit acquires discharge data in which a resolution is set up for each resolution section in a transport direction of a recording medium, and sets data...
7599096 Tint adjustment for monochrome image printing  
On the basis of a standard one-dimensional LUT 412 , a plurality of one-dimensional LUTs 413 having mutually different tones are generated. Next, a plurality of monochrome sample images are...
7591519 Liquid droplet ejection apparatus and image forming apparatus  
The liquid droplet ejection apparatus includes a droplet ejection control device controlling droplet ejection whereby droplets of liquid are ejected from ejection heads (“heads”) towards an...
7588320 Droplet ejection device and method using electrostatic field  
Disclosed are a droplet ejection device and method using an electrostatic field. The droplet ejection method includes: setting a separate electric field direction in each of a plurality of nozzles;...
7585042 Printing up to edge of printing paper without platen soiling  
Using a printer having a recessed portion, printing up to the edge of printing paper is performed without depositing ink drops on the platen. Printing paper P is advanced by upstream paper feed...
7585040 Printing apparatus and printing method  
A printing apparatus divides printing elements of a printhead into blocks, time-divisionally drives the printing elements, and prints a halftone image on a printing medium in accordance with a...
7575301 Image forming apparatus and image forming method  
The image forming apparatus comprises: an ejection head which ejects droplets having electro rheological effects onto a recording medium; a holding device which holds the recording medium, the...
7575293 Dual drop printing mode using full length waveforms to achieve head drop mass differences  
A dual-drop mode for a printer uses at least two full length waveforms and switches between the waveforms according to one or more patterning methodologies to print a page length document having a...
7570392 Error diffusion method and apparatus using weighted vectors along a diagonal to correct for non-ideal ink ejection  
A device including: an acquirer acquiring image data having an M-value (M≧3) pixel value; a memory storing nozzle information; another memory storing error diffusion matrices having different...
7568776 Recording apparatus  
A serial signal for generating a plurality of recording waveform signals is transmitted serially from a signal transmission circuit to a head river. A serial-parallel converting circuit parallely...
7566182 Printhead that uses data track for print registration on print medium  
A mobile device for printing onto a print medium, the print medium including a linear-encoded data track extending in an intended direction of printing, the mobile device including: a sensor...
7566107 Image forming apparatus  
The image forming apparatus includes a liquid ejection head and an ejection control device. The liquid ejection head includes: a large nozzle and a small nozzle performing ejection of droplets of...
7559626 Inkjet recording head substrate and drive control method, inkjet recording head, inkjet recording head cartridge and inkjet recording apparatus  
An inkjet recording head substrate having an electrothermal transducer for generating thermal energy used to discharge ink and a drive element for driving the electrothermal transducer mounted...
7559617 Printer  
A printer for printing on a medium on an endless belt by printer heads includes: a generator generating printing data for each printer head; a detector detecting time-series data for the meandering...
7556327 Charge leakage prevention for inkjet printing  
Charge leakage prevention and voltage drift prevention on a droplet ejection device for an inkjet printer. In one method to prevent charge leakage on a droplet ejection device with a switch and a...
7556326 Ink level sensor and method of use  
An ink level sensing system and method of sensing that includes a lower probe positioned in a lower portion of an ink reservoir, an upper probe positioned above the lower probe and extending upward...
7554690 Array type inkjet printer system including print head, resolution adjusting unit, rendering unit and scaler  
An array type inkjet printer system having a print head with a plurality of nozzles formed therein in the horizontal scan direction includes a resolution adjusting unit for reducing a resolution in...
7552984 Inkjet recording apparatus and inkjet recording method  
An inkjet recording apparatus includes a recording head having a nozzle array of plural nozzles capable of discharging ink. The inkjet recording apparatus performs a scanning/recording operation...
7549716 Method of ejecting microdroplets of ink  
The method of ejecting microdroplets of ink includes a first step for generating one ink column on the outside of the nozzle and for separating a tip end of the one ink column from a remaining part...
7549715 Printer controller for causing expulsion of ink from nozzles in groups, starting at outside nozzles of groups  
A printer controller for supplying one or more control signals to a printhead module, the printhead module including at least one row that comprises a plurality of sets of n adjacent nozzles, each...
7547084 Wide array fluid ejection device  
A fluid ejection device includes a first set of N memory elements each storing a fire enable value, each of the N memory elements configured to be updated. The fluid ejection device further...
7547083 Ink jet printer with a plurality of printhead control units  
An ink jet printer includes a printhead drive unit and a cartridge. The cartridge includes the printhead controller. The printhead controller includes a plurality of inverters connected in series...
7543903 Image-forming device diagnosis  
A method for diagnosing image-forming devices includes forming a non-diagnostic image on a surface, forming diagnostic marks on the surface using distinct image-forming points and sensing the...
7537308 Data processing method and ink jet printing apparatus  
A method is provided which is intended to reduce a visibility of ink dots ejected onto a print medium during a preliminary ejection operation to produce a satisfactory printed image. Preliminary...
7537299 Liquid ejection apparatus, drive signal application method, and liquid ejection method  
The liquid ejection apparatus includes: (A) a drive signal generation section generating first and second drive signals to be applied to an element that can execute a liquid-ejection operation; (B)...
7537298 Printing apparatus, printing method, and program for black pigment and dye ink  
According to the present invention, if an image is printed on both sides of a printing medium, the possibility of rubbing ink off from the printing medium is minimized to inhibit contamination of...
7533950 Liquid jet recording apparatus  
A liquid jet recording apparatus is provided in which liquid droplets are jetted from liquid jetting orifices.
7530654 Liquid ejection apparatus, liquid ejection method, and printing system  
The liquid ejection apparatus includes: a head having a plurality of nozzles each for ejecting a liquid droplet, and a plurality of elements each provided in correspondence with a respective one of...
7530653 Recording head and recorder comprising such recording head  
A recording head having a plurality of recording elements comprises a plurality of switching elements, each provided in correspondence to each of the plurality of recording elements, constant...
7527345 Print controller, method and program for print control, color conversion table, and method for determining ink quantity  
When colored inks and a clear ink are recorded, the printing medium tends to undulate and blotting of ink can occur. Thus, it is difficult to obtain favorable picture quality under various printing...
7524013 Image forming apparatus and nozzle restoring method  
The image forming apparatus comprises: a liquid droplet discharge head which has a plurality of first nozzles that discharge liquid droplets onto a recording medium to perform an image recording,...
7524007 Printhead having sequenced nozzle firing  
A printhead is provided having at least one row that comprises a plurality of sets of n adjacent printing nozzles. Each nozzle is configured to expel ink in response to a fire signal, such that,...
7520579 Image forming apparatus having droplet speed control  
An image forming apparatus includes a recording head, and a drive pulse generator. The recording head includes a nozzle to discharge a droplet of recording liquid, a pressure-generating room to...
7517039 Enabling increased print speed by eliminating nozzle firing sequencing  
The velocity of a printhead scanning across a sheet of paper or other print medium is varied on the basis of whether masking patterns for selectively activating nozzle of the printhead include...
7517036 Printhead module capable of printing a maximum of n channels of print data  
A printhead module capable of printing a maximum of n of channels of print data, the printhead being configurable into: a first mode, in which the printhead is configured to receive print...