摘要:
An ink jet recording apparatus performs the recording, using a recording head for discharging the ink onto the recording medium to effect the recording, while moving said recording head in a main scan direction. The recording head has a plurality of discharge orifice groups in the main scan direction, each of which has a plurality of discharge orifices for discharging the inks of different colors provided in a direction different from the main scan direction.
摘要:
This ink jet recording apparatus makes it possible to reduce the requisite number of times that preliminary ejection is performed for the purpose of ejection recovery through suction, which must be effected to such a degree as to make color mixing on the recording paper sufficiently inconspicuous. With a plurality of recording heads using inks of different lightnesses, ejection recovery is performed successively on the recording heads in accordance with the descending order of ink lightness. In addition, the number of preliminary ejections after ejection recovery to be performed on the next recording head is also controlled, thereby attaining a still greater effect. In a method aspect, the present invention includes an initial discharge step for discharging ink from a recording head, interrupting the discharge of ink for an appropriate period set in accordance with the ink lightness, and discharging ink again from the discharge ports of the recording head after the interruption.
摘要:
A liquid container for a liquid jet recording apparatus comprises a first chamber containing negative pressure producing material and having a liquid outlet connectable to a liquid jet head to supply liquid from the container to the liquid jet head and an air vent for allowing ambient air into the container, wherein the liquid outlet is provided in a bottom portion of the first chamber. A second chamber communicates with the first chamber by a communication path and is substantially hermetically sealed. A wall extends upwardly from the communication path of the first chamber. An ambient air introducing path is provided for between the wall and the negative pressure producing material extending from a point partly up the wall toward the communication path for introducing ambient air into the second chamber.
摘要:
An ink jet cartridge, removably mountable on an ink jet recording apparatus, includes a recording head and an ink tank containing recording liquid. The head and cartridge are removably connected through an engaging member provided on the ink tank and an engaged member provided on the recording head. When the ink tank and the recording head are not combined, a protecting cover provided on the recording head can protect sensitive components of the recording head, while partially overlapping the side of the link tank and being integrated therewith when the recording head and ink tank are combined.
摘要:
Ink which contains surfactant in the amount of not exceeding the critical micelle concentration in the ink but exceeding the critical micelle concentration in purified water, is filled into a cartridge, comprising a first chamber which encloses a negative pressure producing material, and a second chamber in communication with said first chamber only through a narrow passage Then, said ink is supplied to ink jet head and printed.
摘要:
An ink jet recording method for recording in which an ink is discharged by the pressure of a bubble generated in the ink by means of thermal energy, having the steps of preparing an ink jet head having a liquid path provided with a heating element and communicated with a discharge opening supplying the ink into the liquid path, the ink having a surface tension equal to or less than critical surface tension of a recording medium generating thermal energy for generating a bubble with the heating element in such a manner that the bubble is communicated with the atmosphere from the discharge opening when the generated bubble has a negative internal pressure and discharging the ink from the discharge opening by means of the pressure of the bubble generated.
摘要:
An ink jet recording apparatus uses a recording head having discharge ports to discharge ink, and records by discharging ink from the recording head while enabling said recording head to travel in the direction of main scan. This apparatus comprises a recording head which is provided integrally with a plurality of recording units having a plurality of discharge port arrays for discharging ink of different colors, respectively, and then, the plurality of recording units are arranged in the direction of main scan to discharge ink of different densities, respectively. With the structure thus arranged, the recording in all the colors is not executed at a time thus making it possible to obtain an excellent image with a lesser deterioration of image due to ink blur and the like.
摘要:
An ink jet recording apparatus is disclosed in which a bubble is created in ink by thermal energy generated in response to a drive signal applied to a heater, and the ink is ejected onto a recording material by expansion of the bubble. The recording apparatus includes a driving device and a changing device. The driving device applies a plurality of driving signals to the heater for each ink droplet ejection. The driving signals include a first driving signal for increasing a temperature of the ink adjacent the heater without creating the bubble, and a second driving signal after the first drive signal for ejecting the ink. An interval is provided between the first and second drive signals. The changing device changes a width of the first drive signal to adjust an amount of ejected ink. The interval is not shorter than 2.6 microseconds and the second drive signal has a constant width.
摘要:
An ink jet printing apparatus has a station for dyeing a thread for embroidering by discharging ink onto the thread from an ink jet head. According to one aspect of the invention, a printing controller controls the amount of ink discharged per unit time onto the thread according to the speed of relative movement of the thread and the ink jet head. Another aspect of the invention accounts for the length of non-usable thread per unit time between an ink jet printing unit and the tip of an embroidery needle in an embroidery machine.
摘要:
An ink jet recording apparatus which performs recording using a plurality of types of inks which are different in nature such as level of thickness, improved to attain excellent gradation of recorded image with a reduced number of ink types which are prepared beforehand. In one form, a clear ink which does not contain any dye is mixed with an ink which contains dye so as to form an ink blend of a density which can be set by varying the mixing ratio. The ink blend thus formed is supplied to a recording head. The invention also provides an ink jet recording apparatus which permits inks of different compositions to be blended within the recording apparatus so a to enable selection of ink composition which is optimum for the image to be recorded or purpose of use.