摘要:
A recording scan is performed through a relative reciprocation of color recording heads on a recording material. The recording heads can record with higher recording density than that of input image date. A plurality of pixels (2.times.2)are formed for each pixel of input image data. A mixed color image is recorded by multiple scans of the recording heads, in such a manner that pixels thereof (2.times.2) are not subjected to superposition of ink of two colors or more during a scan of the recording heads. Thus, it is possible to prevent an occurrence of variations in mixed color, and to record a high quality color image without increasing a recording time. Further, an amount of ink of one color may be reduced when recording a second one of the scans.
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:
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:
A plurality of recording heads capable of ejecting inks of different colors is reciprocated relative to a recording material to print ink dots on the recording material while effecting main scanning in the forward and the backward pass thereof. A plurality of thinning patterns produced by preparing m.times.n unit picture element groups and arraying these unit groups in such a manner that the groups avoid mutually adjoining and assume a mutually complementary relation is used to effect a plurality of rounds of main scanning in the forward and the backward pass over an area which can be printed by one round of main scanning, record a thinned image, and complete the recording of an image. The array of picture element groups in the thinning patterns is determined so that the groups may mutually adjoin relative to the direction of main scanning.
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:
There are provided ink jet printing method and apparatus which assure that reciprocable printing can be realized at a high speed without any deterioration of a quality of printing. When an image is printed on a printing medium by using a multi-orifice head of which the ink ejecting direction relative to an opening surface is inclined in the return scanning direction, a scanning speed of the return scanning direction is delayed from the scanning speed in the reverse forward direction, an offset distance between a main dot and a satellite at the time of the return scanning is suppressed to be small, and in the case that printing is performed by reciprocable scanning, the satellite is received in the main dot not only during the forward scanning but also during the return scanning.
摘要:
In a color ink jet recording system for performing color image recording on a recording medium using a plurality of recording heads and different color inks, the thinning ratio for at least one (e.g., black K) of the recording heads is set to be different from the thinning ratio for the remaining recording heads (e.g., cyan C, and the like). The total implantation quantity of the black ink can be twice the normal quantity without increasing the number of times of scan operations, and without causing boundary blur, and the print density of black can be increased.
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:
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.