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8179559 |
Image forming apparatus with a substitute recording medium for an unavailable recording medium and method thereof
Methods and apparatuses for forming images on recording media of different sizes are provided. The image forming procedure may include reading setting information which includes the size of a...
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8063925 |
Thermal or density management of imaging device
A multi-media printer includes an engine controller, a printhead controller, and a pulse activation table. The engine controller transmits a row of energy values. The printhead controller receives...
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7499068 |
Apparatus and method for multichannel sequence transmission and control
An apparatus and a method for multichannel sequence transmission and control comprises a DMA generator, a bus interface, a data generator, a control unit, and a strobe signal generator. The DMA...
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7403307 |
Method of selecting inks for use in imaging with an imaging apparatus
A method of selecting inks for use in imaging with an imaging apparatus includes determining a maximum usage of a diluted ink for use in conjunction with a saturated ink based on visual perception...
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7385618 |
Image forming method and image forming apparatus
An image with sufficient gray-scale representation and high resolution is formed on a medium to be recorded, such as an intermediate transfer body, using a thermal printer employing thermal...
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7345791 |
Image processing device and image processing method
An image processing device for processing an input image so as to reproduce a halftone, includes: a matrix setting section for setting a threshold matrix having a plurality of elements arranged in...
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7324237 |
Image recording apparatus correcting the image recording position based on the detected result of the recording material
This invention relates to an image recording apparatus provided with a transporting unit transporting an image recording material whose shape has at a least one side in a predetermined transporting...
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7307754 |
Density control method for image control apparatuses and image forming apparatus capable of executing the method
There is provided an image forming apparatus which is capable of quickly performing measurements required for obtaining a proper image density. The image forming apparatus having a plurality of...
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7126623 |
Serially connected LED lamps control device
The present invention discloses a serially connected LED lamps control circuit device, which is applicable for an integrated circuit and has the following three features: using a buffer circuit to...
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6934054 |
Method and apparatus for two-color thermal point of sale (POS) printing
A 2-color thermal point of sale (POS) printer includes a converter for converting full color printing commands into a commands for printing in two colors, a primary color and an alternate color. A...
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6545773 |
Compensation for print-direction induced hue shift using depletion
Color printheads in a color inkjet printer are in a fixed order in the scanning carriage, which causes the colors to be printed in a different order when the carriage is scanned in an opposite...
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6417878 |
Image forming apparatus and image forming method for improved gradation reproduction
In a thermal printer, the print mode that has been set by the user is judged at the start of printing. When the high-speed print mode is set, the standard deviation σ of the original image data is ...
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6411318 |
Color converting method, density-gradient correction method and color printer using the same
A method of color conversion includes preserving a 0% density for a particular color in the pre-conversion state to maintain a 0% density after conversion is provided via a translation table....
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6331832 |
Auto-ranging digital densitometer with lookup table
An auto-ranging digital densitometer, for determining the optical density of a test sample, includes a photodetector and a digital logarithmic converter. Within the logarithmic converter, an...
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6283570 |
Printer with correction data for number of tones which is fewer than number of tones that image data have
A printer apparatus comprises a head having k (number) printing elements for printing an image data. A printing element selecting section selects a printing element driven at the time of printing...
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6252678 |
Image formation method
A method for forming an image comprises the steps of dividing an inputted image into a plurality of unit areas, preparing at least five gradation conversion tables relating a density value of the...
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6225618 |
Digital densitometer with auto-ranging
An auto-ranging densitometer is disclosed for determining the density of a test sample, wherein the densitometer includes a photodetector and an amplifier circuit adapted to produce an output...
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6222176 |
Digital densitometer with lut output summation to yield density value
An auto-ranging densitometer includes a photodetector and an amplifier circuit adapted to produce an output signal proportional to intensity of light on the photodetector. The amplifier circuit has...
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6088050 |
Non-impact recording apparatus operable under variable recording conditions
In a non-impact recording apparatus that includes a plurality of recording elements, there is provided a source of first data signals representing for each of plural pixels density, size or...
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6052138 |
Shading compensation method
In the improved shading compensation method applied to thermal recording for recording on a thermal recording material by using a thermal head having a glaze in which heat-generating elements are...
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6031554 |
Halftone recording method and apparatus
A recording sheet is fed two times for recording of one line. Two recording operations corresponding to the respective sheet feeding operations are performed in a dispersive manner based on...
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5934811 |
Line printer
A line printer including a device for receiving gradation scale values of pixels for one line to be printed, and a plurality of tables for correcting a density variation caused by common resistance...
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5765953 |
Control device of energy supply for heating elements of a thermal head and method for controlling energy supply for said heating elements
A control device which controls the supply of energy heating elements of a thermal head. The control device to a memory includes for storing multiplication results as correction energy values of...
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5604526 |
Correction apparatus for thermal printer
A correction apparatus for a thermal printer includes a memory for storing the deviation quantity of each heating element of a thermal print head or a temperature correction quantity, a first...
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5589959 |
Optical modulation device having a polymer network containing free molecules of a chiral liquid crystalline material
An optical modulation device is described, which comprises two substrates, which are provided with at least one electrode, and an optically active layer situated between said two substrates, the...
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5453775 |
Medical image forming apparatus
A medical image forming method including, the steps of superposing a three-primary-color thermal transfer sheet and an image receiving sheet, the thermal transfer sheet having a base film and three...
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5400059 |
High speed thermal printer
A high speed thermal printer including a maximum data detector for detecting maximum gradation data from the image signal of a line received from a signal input source on a line-by-line basis, a...
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5349373 |
Thermal head drive unit
A thermal head drive unit comprises electric power supply means for supplying electric power to heat-generating resistor elements arranged in a line in a thermal head. Head drive means is provided...
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5319391 |
Thermal printing apparatus
A thermal printing apparatus for printing input gradational images, characters and figures by using multilevel density which can appropriately regulate the levels of the densities representing the...
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5257098 |
Printing method of color video printer
A high-speed printing method capable of considerably reducing a printing time consumption in a color video printer having at least one line memory coupled to receive at least one line data...
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5216439 |
Scaling systems for data recorders
Data is recorded with a plurality of clocked recording elements in a plurality of recordings in a plurality of different scales determined by different data recording parameters. Data recording...
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5216440 |
Gradation control circuit of line thermal printer
A gradation modulating apparatus is provided in a line thermal printer having a plurality of resistive elements arranged linearly widthwise of a medium sheet for printing gradated dots...
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5214446 |
Gradation record printer
A gradation record printer in which an amount of energy applied to a thermal head is controlled in response to a gradation level of an input image signal to print an image on a printing medium with...
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5166701 |
Recording density correction apparatus in printer
A recording density correction apparatus in a printer, comprises; a correction gradation level data selection device for producing class numbers for selecting correction gradation level data for...
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5160941 |
Method for driving thermal print head to maintain more constant print density
A method of driving a thermal head enabling recording of multiple gradations and having a plurality of heating resistors, comprising: a first step of calculating an amount of density correction,...
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5153605 |
System of controlling energization to thermal head in thermal printer
An energization control system for controlling energization of a thermal head of a thermal printer, the thermal head being equipped with a plurality of heating elements successively arranged in...
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5148184 |
Method of controlling printed density in thermal transfer recording
A method of controlling printed density in thermal transfer recording, comprising the steps of: obtaining from first data representing, for each of a plurality of densities, a sum of absolute...
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5142302 |
Thermal transfer video printer having improved temperature correction function of coloring density
A sublimation type thermal transfer color video printer generates a heating pulse having a duration corresponding to the tone level of the pixel to be printed, according to the data in a reference...
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5142301 |
Gradation control circuit for a thermal head
A gradation control circuit for a thermal head used for printing an image or the like preferably includes a shift register for receiving gradation data, a selection circuit for selecting one...
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5126757 |
Multi-gradation image recording apparatus
A multi-gradation recording apparatus whose circuits are simplified by reducing the number of recording gradation level bits specified to each recording element without reducing the recording...
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5089831 |
Block-divided driving apparatus of gradation thermal printhead
A thermal recording apparatus having a thermal head including a plurality of heating element groups each of which consists of a plurality of heating elements driven simultaneously and arranged in a...
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5086306 |
Line head driving apparatus
A line head driving apparatus includes a correcting circuit which sets an electrical energy level to be applied to thermal elements to be greater than that indicated by multilevel image data...
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5008837 |
Gray scale generating circuit for thermal printer
A signal generating circuit for generating gray scale signals for a thermal printer with a thermal head comprising a plurality of heating elements arrayed in a line, in such a manner that, even...
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5005027 |
Thermal recorder
The present invention relates to a thermal recorder employing a linear array of heat-producing elements which moves in a direction on heat-sensitive recording paper advanced in a direction...
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4991113 |
Thermal transfer printer with image data processing
A printer of the thermal transfer type reproduces original gradated image comprised of individually gradated image elements into the form of printed gradated image having image density determined...
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RE33496 |
Thermal transfer recording apparatus
A recording apparatus of thermal transfer type includes a thermal head having a plurality of linearly-arrayed heat generating elements selectively generating heat in response to the application of...
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4951152 |
Circuit for controlling thermal array recording head
A PWM (Pulse Width Modulation) control circuit for printing apparata comprises a memory for storing digitized image data, a main converter connected to the memory for converting upper bits of the...
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4943861 |
Apparatus and method for exposing photosensitive recording media with digital image data
An apparatus and method are provided for recording images on photon sensitive recording media (20) which includes a source (12) of image pixel data in digital form having a multiplicity of possible...
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4899170 |
Selective energization of thermal printers
A thermal print head driver circuit which turns on and off each heating resistor at times uniformly distributed about the center (halfway) of the time to print a line (pixel interval).
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4893190 |
Gradation control device for thermal ink-transfer type printing apparatus
A gradation control device for a thermal ink-transfer type printing apparatus controls an applying time of a current to each of heating elements of a thermal printing head depending on a voltage...
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