摘要:
A liquid composition is adapted for use with an anionic ink for forming a high quality image with alleviated bleeding by means of an ink-jet recording system. The liquid composition includes a first cationic substance and a second cationic substance different from said first cationic substance, of which the first cationic substance is provided in the form of micro-particles at least whose surface is cationic.
摘要:
In a correction processing that corrects a color deviation caused by output characteristic variations among print heads of a printing apparatus, the printing apparatus prints a test pattern that allows accurate detection of the color deviation by a visual check. More specifically, each of the patches in the test pattern is made up of two areas placed adjacent to each other. One of the two areas (upper area) is used as a test area for detecting the degree of the color deviation. Of the gradation values of C, M and Y, which make up the patch print data, the gradation values of C and M are changed among the patches making up the test pattern. The other area is used as a reference area printed with an achromatic color that represents a reference gradation value for the deviation detection. The gradation values of C, M, Y and K are determined so that a spatial frequency of dots formed in the reference area of each patch is close to the spatial frequency of the associated test area.
摘要:
In a multipass printing using a print head which has a plurality of staggered columns of print elements, one and the same print line is formed by using nozzles (k1-129, k2-1) of different nozzle columns (k1, k2) to disperse the directivity of landing deviations of dots in the same print line.
摘要:
In an ink-jet printing apparatus for performing printing of an image using a plurality of printing heads for ejecting an ink and a printing head for ejecting a processing liquid making the ink insoluble, a rebounding mist to be generated by ejection of the ink and the processing liquid is prevented from adhering on to the vicinity of nozzles of the printing heads. Therefore, respective number of ejection of respective of the printing heads is counted. On the other hand, a threshold level is to set smaller, at greater distance between the printing head for ejecting the ink and the printing head for ejecting the processing liquid. A recovery process, such as wiping or the like is performed when the counted value of the printing head exceeds a predetermined value. By this, appropriate recovery process, such as wiping or the like can be performed depending upon deposition amount of the mist for respective printing heads.
摘要:
In a magnetic tape surface treatment method and apparatus for rubbing together a magnetic tape and a lapping tape and thereby removing projections and adhered matter from the magnetic surface to the magnetic tape pressurized air is blown onto the tapes to prevent the formation of an air film between the contacting surfaces of the two tapes. This enhances the contact quality and improves the surface treatment efficiency. Also uniformity of the surface treatment effect is enhanced by simultaneously controlling the tensions in the magnetic tape before and after the two tapes make contact.
摘要:
A radio frequency repeater equipment in a radio communication system is disclosed. An indoor space exists under a radio base station of the radio communication system, and a mobile terminal in the indoor space performs radio communications with the radio base station via the radio frequency repeater equipment, the radio frequency repeater equipment includes: a first antenna for receiving a DOWN LINK signal from the radio base station; a first attenuator for attenuating an output of the first antenna; a second antenna for outputting an output of the first attenuator, and for receiving a signal from the mobile terminal; and a second attenuator for attenuating an output of the second antenna.
摘要:
An image forming method comprises a step of reacting an ink containing a coloring material with a liquid composition containing fine particles reactive to the coloring material on a recording medium, where the reaction between the coloring material and the fine particles occurs in a liquid, the coloring material is adsorbed on the surfaces of the fine particles while keeping the monomolecular state as in the ink, and the fine particles having the coloring material on the surface aggregate each other. This method can provide images of high optical density and high color saturation, with less occurrence of white stripes in the image.
摘要:
A signal transmission system including an antenna that is used for transmitting and receiving and that is connected, via a transmission cable, to a radio base station of a radio communication system operating under a TDD scheme is disclosed. The signal transmission system includes: a detection part for detecting a synchronization pattern that is included in a DOWN LINK signal received from the radio base station via the transmission cable; and a part for determining timing for switching between transmitting and receiving for the antenna on the bases of the detection result.
摘要:
An ink jet recording apparatus for effecting recording on a recording material by ejecting ink with relative scanning movement between a recording head and the recording material, the ink jet recording apparatus, including obtaining means for obtaining information indicative of an amount of ink to be ejected to each of unit areas provided by dividing an area in the neighborhood of a boundary between adjacent bands of scanning recording of the recording head on the recording material; and control means for controlling an amount of being to be ejected to the unit area on the basis of the output of the obtaining means, wherein the unit areas exist astride the boundary between adjacent one of the bands.
摘要:
A printing information processing system provided in the present invention calculates the total of printing signal values for printing onto at least one boundary area of the upper and lower adjacent boundary areas included in the upper and lower adjacent scanning print areas formed by print heads, and responding to the magnitude of this total of printing signal values performs correction on the magnitude of the print signal value for printing onto the boundary by the use of the print signal for at least one area of the upper and lower adjacent boundary areas.