Abstract: The invention presents a pattern forming apparatus including: an intermediate transfer body; a particle supply unit, for forming a liquid receptive particle layer of a specified layer thickness by supplying liquid receptive particles, capable of receiving a recording liquid containing recording material and also capable of trapping the recording material at the surface thereof, onto the intermediate transfer body; a liquid droplet ejection unit for ejecting liquid droplets of the recording liquid on the liquid receptive particle layer on the basis of specified data, and forming a pattern of the recording material near the surface of the liquid receptive particle layer; and a transferring unit, for transferring the liquid receptive particle layer containing the recording liquid onto a transfer object, so that the pattern is placed between the transfer object (recording medium) and the liquid receptive particle layer.

Abstract: Heating elements are driven to continuously perform a dummy jet when the number of accumulated printed sheets reaches a predetermined number that causes the image quality deficiency. The surface temperature of a recording head is increased to T1° C. to boil ink in the individual channel. A bubble attached to the common liquid chamber side edge of the individual channel is spaced from the wall surface to be expanded to be integrated with other bubbles, and then, is discharged from the common liquid chamber to an ink supply chamber by its floating force. The bubble can be removed reliably.

Abstract: A channel wafer has a plurality of nozzle flow channels and a common ink reservoir. Pits communicating with the ink reservoir from above heating elements are formed in a polyimide layer on a heater wafer. Each of the pits has a throttled portion in the rear of the heating element and the terminal of a nozzle flow channel is situated on the throttled portion so as to form the minimum sectional area portion of the flow channel. Stable ink discharge characteristics are attained by means of the flow channel resistance of the minimum sectional area portion and bubble pressure is prevented from being relieved toward the ink reservoir. The pressure propagated to the ink reservoir is made to attenuate internally, so that no crosstalk is produced.

Abstract: Heating elements are driven to continuously perform a dummy jet when the number of accumulated printed sheets reaches a predetermined number that causes the image quality deficiency. The surface temperature of a recording head is increased to T1 ° C. to boil ink in the individual channel. A bubble attached to the common liquid chamber side edge of the individual channel is spaced from the wall surface to be expanded to be integrated with other bubbles, and then, is discharged from the common liquid chamber to an ink supply chamber by its floating force. The bubble can be removed reliably.

Abstract: A driving condition setting method of an ink jet recording head enables stable discharge of an ink drop irrespective of a difference in a channel volume. In a thermal ink jet recording head, the displacement of a distance (channel volume) from a heating element to a nozzle surface is stored as data into a memory. The ink jet recording head is mounted on an ink jet recording device. A control unit of the ink jet recording device reads the data so as to set a driving condition (the number of pre-pulses) of the heating element based on the data. Therefore, even when the channel volume is displaced by a production error, an ink discharge state can be almost constant, and stable printing performance can be ensured.

Abstract: The present invention provides an ink jet recording head in which an ink droplet having a small volume that can realize a desired image quality can be ejected onto a recording sheet without making a space between dots in normal printing, and further, in which an ink droplet having a large volume that can afford a sufficient density can be ejected even when thinning-out printing is performed in high-speed printing. An ink jet recording head having two ink supplying openings that introduce ink from an ink tank, an ink chamber that temporarily contains ink introduced from the ink supplying openings and a set of two kinds of first and second ink flowing paths mounted alternately on a flowing path substrate. The first ink flowing path ejects an ink droplet of 7 pl and its ejecting amount is constant. The second ink flowing path selectively ejects one of ink droplets of two volumes, i.e., ink droplets of 7 pl and ink droplets of 30 pl.

Abstract: An inkjet recording head can compensate the drop volume change of ink droplets due to the cutting position deviation caused when nozzles are formed by cutting and can eject ink droplets having a constant drop volume stably regardless of the flow passage length. In manufacturing the head, less manufacturing processes are required and generation of off-specification products is suppressed, and the product is manufactured at low cost. The inkjet recording head is provided with individual flow passages having a pressure generation part with a pressure generation plane positioned in parallel to the flow of ink supplied in the nozzle direction having a nozzle at each end, which nozzle ejects ink droplets in the direction perpendicular to the normal line of the pressure generation plane.

Abstract: A driving condition setting method of an ink jet recording head enables stable discharge of an ink drop irrespective of a difference in a channel volume. In a thermal ink jet recording head, the displacement of a distance (channel volume) from a heating element to a nozzle surface is stored as data into a memory. The ink jet recording head is mounted on an ink jet recording device. A control unit of the ink jet recording device reads the data so as to set a driving condition (the number of pre-pulses) of the heating element based on the data. Therefore, even when the channel volume is displaced by a production error, an ink discharge state can be almost constant, and stable printing performance can be ensured.

Abstract: The present invention provides an ink jet recording head in which an ink droplet having a small volume that can realize a desired image quality can be ejected onto a recording sheet without making a space between dots in normal printing, and further, in which an ink droplet having a large volume that can afford a sufficient density can be ejected even when thinning-out printing is performed in high-speed printing. An ink jet recording head having two ink supplying openings that introduce ink from an ink tank, an ink chamber that temporarily contains ink introduced from the ink supplying openings and a set of two kinds of first and second ink flowing paths mounted alternately on a flowing path substrate. The first ink flowing path ejects an ink droplet of 7 pl and its ejecting amount is constant. The second ink flowing path selectively ejects one of ink droplets of two volumes, i.e., ink droplets of 7 pl and ink droplets of 30 pl.

Abstract: An inkjet recording head can compensate the drop volume change of ink droplets due to the cutting position deviation caused when nozzles are formed by cutting and can eject ink droplets having a constant drop volume stably regardless of the flow passage length. In manufacturing the head, less manufacturing processes are required and generation of off-specification products is suppressed, and the product is manufactured at low cost. The inkjet recording head is provided with individual flow passages having a pressure generation part with a pressure generation plane positioned in parallel to the flow of ink supplied in the nozzle direction having a nozzle at each end, which nozzle ejects ink droplets in the direction perpendicular to the normal line of the pressure generation plane.

Abstract: Through-holes serving as common liquid chambers 5 are formed in a flow channel substrate 1 by a wet anisotropic etching process. One opened end of each through-hole serves as a liquid inlet 4. Trenches rectangular in cross section, which are used as liquid flow channels 7, are formed in the flow channel substrate by RIE process. Each liquid flow channel 7 includes a front constriction 41 formed near its associated discharge orifice 9 and a rear constriction 42 formed near a connection portion between the channel and the common liquid chamber 5. The common liquid chamber 5 is communicatively connected to the liquid flow channel 7 in a linear fashion, and a portion of the liquid flow channel 7 between the front constriction 41 and the rear constriction 42 may be designed to be broad. Therefore, the flow channel resistance is reduced, the liquid jetting efficiency is improved, and the liquid re-supplying is performed at high speed.

Abstract: A polycrystalline silicon layer which serves as a heating resistor is laid on a Si substrate, whereby a heating area 25 and a low-resistance area 26 are formed. In this event, the area of the heating area 25 is set according to the physical properties of ink squirted from a corresponding nozzle. As a result, the amount of ink droplet to be squirted becomes an optimum value, and the quality of an image is improved. Further, the heating area 25 is formed such that the resistance of the heating area becomes larger as the area of the heating area becomes smaller. Eventually, the amounts of energy per unit area of the heating areas become equal to each other, and ink-jet nozzles can be actuated using the same drive pulse.

Abstract: An ink jet print head is disclosed which comprises: a head chip having a plurality of heating elements thereon, a flow passage forming member including a plurality of injection ports respectively corresponding to the heating elements for jetting out ink, a substrate for fixing the head chip, and a joint for supplying ink, wherein the substrate includes an opening so formed as to extend in the arrangement direction of the heating elements, the flow passage forming member is disposed so as to cover the opening from a position above the head chip, at least part of the joint is connected to the flow passage forming member, and ink supplied from the joint is supplied along the flow passage forming member to the heating elements disposed on the head chip.

Abstract: A condom prophylactic against AIDS infection coated with acidic polysaccharides is provided which has an antiviral action and a method of the manufacture thereof. The acidic polysaccharides can be polysaccharides, protein-bound saccharides and glycolipids such as extracts from sea-weeds, extracts from Procaryomycota and Eucaryomycota, carrageenan and so on which have acidic groups such as sulfuric acid group in a portion of polysaccharides. A condom is coated with a solution of said acidic polysaccharides, and optionally with a lubricant. AIDS infection can be prevented without side effect by using a condom of the present invention.

Abstract: A thermal ink-jet head of the present invention is so designed as to improve operating frequency by surely trapping foreign substances and reducing the influence of a cross stroke. In the thermal ink-jet head of the present invention, a channel wafer is provided with a nozzle channel, a coupling flow channel, and an ink reservoir. A protective layer and a polyamide layer are formed on a heater wafer. The polyamide layer is provided with pits extending from a heating element up to the coupling flow channel and a bypass pit for coupling the ink reservoir and the coupling flow channel. Foreign substances are trapped at the entry port of the bypass pit and the entry port of the coupling flow channel. The pit controls the growth of the bubble by eating away the front end of the heating element and reducing its rear end.

Abstract: A composition comprising as an active ingredient a compound consisting of an immunoglobulin F.sub.c fragment and an alkylating, antibiotic, or antimetabolic antitumor substance bound thereto, and a pharmaceutically acceptable carrier is disclosed. The Fc fragment moiety in the compound is stable in a living body, and thus the activity of the antitumor substance therein is maintained over a long period.

Abstract: A method for treating an amine-containing waste water, which comprises conducting the waste water to active carbon.

Abstract: Disclosed herein are an anti-tumor substance obtained by bonding an anti-tumor agent to human immunoglobulin, and a process for producing the same.

Abstract: Disclosed herein are the derivatives of substituted cephalosporanic acid represented by the formula (I): ##STR1## wherein R.sup.1 represents a 4-pyridylthiomethyl group, an alpha-aminobenzyl group, a cyanomethyl group or a 1-tetrazolylmethyl group; R.sup.2 represents a hydrogen atom, an acetoxy group or a (5-methyl-1,3,4-thiadiazol-2-yl)thio group; R.sup.3 represents a hydrogen atom, a hydroxyl group, a carbamoyl group, an alkyl group having 1 to 4 carbon atoms or --(CONH).sub.m (CH.sub.2).sub.n --COOH wherein m is 0 or 1, n is 0, 1 or 2 and the carboxyl group may have been converted to a salt or an ester thereof; p is 0, 1 or 2 and X represents carbon atom or nitrogen atom, and antibiotics comprising the derivatives of substituted cephalosporanic acid represented by the formula (I).