Class 347/189 - In accordance with ambient temperature

Subclass of Class 347 - Incremental printing of symbolic information
Definition: Subject matter wherein the regulating means responds to
No. of patents: 38
Last issue date: 08/24/2010

Number	Title	Issue Date
7782350	Printing apparatus, printing system, printhead temperature retaining control method The apparatus and method can suppress an increase in power consumption and reduce ink density unevenness caused by variations in the amount of ink discharge upon performing printhead temperature retaining control. The printing apparatus, which prints on a print medi...	08/24/2010
7330201	Thermal printer and method for operating same A printer that applies donor material from donor patches on a donor web to a receiver medium using a thermal printhead that generates heat and a method for operating such a printer are provided. The method comprises the steps of: receiving a print order requesting t...	02/12/2008
7325896	Temperature calibration for fluid ejection head The present invention includes as one embodiment a method of ejecting a fluid onto a print media. The method includes providing an ejection head having a nozzle that is coupled to a temperature sensor and a memory device. The method further includes measuring an unc...	02/05/2008
7295224	Thermal response correction system A model of a thermal print head is provided that models the thermal response of thermal print head elements to the provision of energy to the print head elements over time. The amount of energy to provide to each of the print head elements during a print head cycle ...	11/13/2007
7190385	Thermal printing method Method of generating a sharpened image in a thermal printer having an internal thermal model module that converts input values into power values for each element of a thermal head and for each printing cycle. Input values to be fed into the internal thermal model ar...	03/13/2007
7176953	Thermal response correction system A model of a thermal print head is provided that models the thermal response of thermal print head elements to the provision of energy to the print head elements over time. The thermal print head model generates predictions of the temperature of each of the thermal ...	02/13/2007
7145675	Humidity-based printer system control A printer system comprises a communication interface and printer components. The communication interface receives a humidity value from a toner cartridge. The printer components control printing operation based on the humidity value. To control printing operation, t...	12/05/2006
7014375	Thermal printer and method determining battery condition based on temperature A tape print apparatus is capable of setting a weak voltage value, serving as a criterion on indicating a power weakness condition on a display, to an appropriate voltage value based on various kinds of usage conditions by considering that the degree of consumption ...	03/21/2006
6747682	Thermal master making device and thermal printer including the same A thermal master making device and a thermal printer including the same are disclosed. A thermistor senses ambient temperature around a thermal head. A correcting device corrects the amount of heat to be generated by the thermal head, i.e., the duration of energizat...	06/08/2004
6744455	Method and apparatus for thermal management in a thermal printer having plural printing stations A method and apparatus for recording image information on a moving receiver media at a thermal print station features a ribbon cassette assembly that stores a thermal ribbon having dye, the thermal ribbon being supported as a supply role and take-up role on the ribb...	06/01/2004
6382758	Printhead temperature monitoring system and method utilizing switched, multiple speed interrupts A printhead temperature monitoring system includes a processor having a top priority interrupt input, a normal priority interrupt input, and at least one input for receiving temperature related signals. The processor is programmed or otherwise operable to...	05/07/2002
6236414	Ink transfer printer An ink transfer printer has an electrically-insulated base plate. An array of electric heater elements, aligned with each other, is provided on a surface of the base plate, the heater elements being selectively and electrically energized in accordance wit...	05/22/2001
5900900	Image recording method using reversible thermosensitive recording material and image display apparatus using the same An image recording method using a reversible thermosensitive recording material which is capable of assuming a transparent state when heated to a first temperature which is above room temperature, and a colored state when heated to a second temperature wh...	05/04/1999
5835235	Image forming apparatus which establishes image formation values using environmentally sensitive references Disclosed is an image forming apparatus which reproduces halftone by using variable area toning method. The image forming apparatus stores a reference pattern data for adjusting bias voltage of developing device. The image forming apparatus also stores de...	11/10/1998
5809879	Control device for a thermosensitive stencil printer A control device for a thermosensitive stencil printer capable of perforating a stencil in an optimal configuration matching a desired resolution in the subscanning direction and thereby producing desirable images. The device allows perforations to be for...	09/22/1998
5808653	Thermal gradation printing apparatus In the disclosed thermal gradation printing apparatus, heat elements in a line-type thermal head are divided into a plurality of groups, and an accumulated heat amount in the substrate of the thermal head for each group is estimated based on the pulse wid...	09/15/1998
5805312	Thermographical image copier system with real time copying and variable read and record speeds An image copying system is disclosed which has a thermal head energized at a strobe current supply time rate corresponding to a current head temperature according to a preset strobe current supply time rate control characteristics. In copying operation at...	09/08/1998
5800082	Recording apparatus and recording temperature control method A controller receives a signal indicating the temperature of a print head from a head temperature detection thermistor. The controller sets a cooling time for the print head based on a time in which the temperature of the print head increase from a first ...	09/01/1998
5786837	Method and apparatus for thermal printing with voltage-drop compensation Thermal recording comprising the steps of supplying input data Iu to a processing unit (23) of a printer having a thermal head with a plurality of heating elements; storing input data of a line into a buffer memory (24), further called input li...	07/28/1998
5706043	Driving method of thermal printer In a driving method of a thermal printer, in which method heating elements are driven by strobe pulses consisting of preheat pulses and subsequent drive pulses that depend on a gradation level, the preheat pulse width and the frequency of basic clock puls...	01/06/1998
5690437	Method and apparatus for controlling the thermal head drive The present invention provides a method and an apparatus for driving and controlling a thermal head used in a printing device, such as a tape printer, in response to the temperature variations of the printing device environment and the thermal head. Accor...	11/25/1997
5664893	Thermal printer comprising a real time temperature estimation A thermal sublimation printer comprises means for counting at periodic observation times the number (Nh) of activated heating elements; means for measuring at periodic observation times the temperature (Td) of the drum and the temper...	09/09/1997
5644351	Thermal gradation printing apparatus In the disclosed thermal gradation printing apparatus, heat elements in a line-type thermal head are divided into a plurality of groups, and an accumulated heat amount in the substrate of the thermal head for each group is estimated based on the pulse wid...	07/01/1997
5614934	Printer A color correction circuit is best adjusted to consistently obtain a stable, color printing by compensating for a change in the characteristic of a printer under the influence of ambient temperature and humidity. Before the printing of pictorial data, e.g., an...	03/25/1997
5497174	Voltage drop correction for ink jet printer An apparatus and method compensates for a voltage drop of electrical pulse signals selectively applied to a plurality of heater elements on a printhead of an ink jet printing device. A number of heater elements to be pulsed at a given time is determined a...	03/05/1996
5365257	Thermal printer and method of controlling a thermal print head A thermal printer drive control apparatus of the type having a thermal print head comprising a plurality of heating elements provides for reliable cost effective thermal head temperature detection by means of producing multiple, different current flow int...	11/15/1994
5359424	Thermal transfer image forming apparatus using different gamma functions for different density ranges A thermal transfer image forming apparatus comprises: a recording head having a plurality of heating resistor elements arranged in a line; a mechanism for carrying a sheet of recording paper and an ink sheet at a predetermined pitch; a microcomputer inclu...	10/25/1994
5051756	Thermal printer In a thermal printer for thermo-sensitive recording, a plurality of heating resistors are electrically divided into N units each having M heating resistors, and N driver circuits, N latch circuits and N shift registers which are interconnected in tandem a...	09/24/1991
5023626	Printer capable of temperature compensation of the optical density of a printed image after a complete image is printed A printer for recording an image on a recording medium comprises a recording head for recording an image on a recording medium, a thermocouple for detecting a temperature, a control circuit for controlling the recording head in accordance with a detection...	06/11/1991
4814787	Method for compensating temperature to a thermal head The relation between an input energy at a thermal head and recording density in a thermographical recording system varies inconveniently by the ambient temperature or the head temperature, and moreover, the slope of the relation varies by the temperatures...	03/21/1989
4719473	Recording apparatus A recording apparatus performs image recording on a recording medium such as recording paper by using a recording head. The recording apparatus include apparatus for determining the drive power of a recording head in response to an input from a manual ope...	01/12/1988
4710783	Temperature compensated continuous tone thermal printer A continuous tone temperature compensated thermal printing apparatus is described which uses a thermistor that produces a signal representative of the average temperature of a print head. This signal is used to control the pulse width of constant current ...	12/01/1987
4591876	Thermal printer A thermal transfer printer includes a thermal head having plural heat generating elements, a thermal head driver connected to a character generator for controlling the thermal head by supplying drive currents to the heat generating elements of the thermal...	05/27/1986
4590362	Drive circuit for temperature control heater in ink jet printer A circuit for controllably driving a heater in order to speed up temperature elevation at a buildup stage of a liquid which is to be maintained at a predetermined temperature heated by the heater, particularly ink in an ink jet printer. A voltage develope...	05/20/1986
4542281	Thermal printer contrast control A method and apparatus for controlling the voltage and hence the power delivered to a thermal print head heater. The voltage and hence the power delivered to a thermal print head heater is controlled in response to the ambient temperature surrounding the ...	09/17/1985
4494126	Thermal recording head drive device A thermal recording head drive device in which a uniform recording density is provided independent of temperature changes in the device. An analog shift register receives an analog input signal having an amplitude which varies according to the densities o...	01/15/1985
4370666	Thermal head driving device A thermal head driving device is provided with a safety circuit for preventing the heating resistors of a thermal head from being burnt or reduced in life by an abnormal printing pulse signal being applied to the heating resistors. The device is also prov...	01/25/1983
4113391	Method for controlling voltage and providing temperature compensation in a thermal printer A method and apparatus is provided for controlling the period or pulse width of pulses applied to exothermic printing elements of a thermal printer to effect printing. Control of the period or pulse width is in response to variations in applied voltage an...	09/12/1978

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Class 347/189 - In accordance with ambient temperature