54results about How to "Good inkjet effect" patented technology

An ink-jet printer, including an ink-jet recording head having an ink inflow passage including an ink inlet, and an air-discharge passage which allows the ink inflow passage to communicate with an atmosphere; an air-discharge valve which selectively opens and closes the air-discharge passage; an ink tank which stores the ink and which has an ink outlet and an air inlet; a connector having an ink supply passage which communicates, at one end thereof, with the ink outlet of the ink tank and communicates, at an other end thereof, with the ink inlet of the recording head; an air supplying device which supplies the air to the ink tank via the air inlet thereof; an obtaining portion which obtains one of an elapsed time, t, from a reference time, and a volume, V, of an air present in the ink supply passage and the ink inflow passage at the elapsed time t, based on an other of the elapsed time t and the air volume V, and a following relationship: V=a·e^bt, where a and b are coefficients and e is a base of a natural logarithm; and a control portion which controls, based on the obtained one of the elapsed time t and the air volume V, an operation of the air supplying device and/or the air-discharge valve, so that the volume V of the air at the elapsed time t is discharged through the air-discharge passage opened by the air-discharge valve.

The invention provides a negative-pressure ink supply pressure control system and method of rigid printed circuit board spray printing equipment. The system comprises a vacuum pump, a vacuum generator, a gas pressure transducer, a singlechip and a spray head device, wherein the vacuum pump is connected with the vacuum generator, the vacuum generator is connected with the spray head device, and the spray head device is simultaneously connected with the gas pressure transducer; and the gas pressure transducer is connected with the data input end of the singlechip, and the signal output end of the singlechip is connected with the vacuum pump. The method is used for monitoring the negative pressure condition in the spray head device through the gas pressure transducer and the singlechip in real time, the operating current of the vacuum pump is adjusted so as to realize automatically controlling the stable negative pressure of the spray head device. According to the technical scheme provided by the invention, automatic control on the stable negative pressure in a negative-pressure ink supply system is realized.

A liquid ejecting apparatus includes a carriage having a removable liquid receptacle that holds a liquid or a removable connector connected via a flexible liquid channel to an external liquid receptacle that holds a liquid, an ejecting head, mounted in the carriage, that has a nozzle that ejects the liquid, and a maintenance unit that runs maintenance on the ejecting head; the ejecting head has a filter disposed so as to be capable of contact with a liquid absorption member provided in the liquid receptacle and in the connector.

The invention discloses an ink jetting device printing head for a printed circuit board. The ink jetting device printing head comprises printing head devices and a lateral connecting rod. A clamping groove is formed in one side of a fixed connecting column. Air blowing devices are arranged on one sides of the printing head devices. The lower ends of the air blowing devices are provided with air outlet pipelines and air outlets. One end of the lateral connecting rod is provided with a fixed cross rod. A movable connecting rod is arranged on the other side of the lateral connecting rod. Distancescales are arranged on the outer surface of the lateral connecting rod. The ink jetting device printing head for the printed circuit board is provided with the air blowing device, the movable connecting rod and the clamping groove, so that ink oil which is just sprayed onto the circuit board can be blow-dried by hot air blown out, and the condition that the ink oil cannot be fixed to the circuitboard in a short time is avoided. The distances between the printing head devices are controlled within a reasonable range by sliding the printing head devices left and right and observing the distance scales. The ink jetting device printing head for the printed circuit board is applicable to different working conditions and has a better application prospect.

The invention relates to ink for preparing a dielectric layer of a transistor, an ink film and a preparation method and applications thereof. The ink contains poly(vinyl alcohol cinnamate), a polymer additive, a surfactant and an organic solvent; the weight-average molecular weight of the poly(vinyl alcohol cinnamate) is 10,000-50,000; the weight-average molecular weight of the polymer additive is 1,000-50,000, the polymer additive is selected from at least one of polystyrene and polymethyl methacrylate; relative to the 1mL of organic solvent, the content of the poly(vinyl alcohol cinnamate) is 1-50mg, the content of the polymer additive is 0.1-25mg, and the content of the surfactant is 0.05-1mg. The ink disclosed by the invention has excellent ink jetting performance and film forming performance, as well as crosslinking characteristic under ultraviolet light, the dielectric layer of a transistor prepared from ink can prevent ink from permeating, and also can barrier the electronic transmission, the insulating performance of the dielectric layer can be improved, and the dielectric layer of the organic film transistor can be prepared from ink by adopting an ink-jet printing method.

The present invention provides an aqueous ink composition including a hydrophilic organic solvent, a surfactant, and a colored fine particle dispersion which contains an oil-soluble dye, and exhibiting a dynamic surface tension of 25 to 35 mN/m, as well as an ink-jet recording method including a step of carrying out recording using the aqueous ink composition.

An ink jet recording apparatus for jetting ink onto a recording medium having: an ink cartridge; an ink jet recording head; and an ink supply tube which connects the ink cartridge and the ink jet recording head, wherein a driving frequency of the ink jet recording head is 15 kHz or above, and an average surface roughness of an inner surface of the ink supply tube is 200 to 2,000 nm.

The invention relates to an ink jet device and a method for eliminating bubbles in an ink jet head. The ink jet device comprises an ink supply tank and at least one ink jet head, and at least one input pipe is connected between the ink supply tank and at least one ink jet head. The ink jet device also comprises at least one vent-pipe and at least one balance pipe. At least one vent-pipe is communicated with the air through a vent valve. At least one balance pipe is used for connecting with at least one input pipe and at least one vent pipe. At least one balance pipe is provided with a non return valve used for preventing the ink from flowing towards at least one input pipe form at least one vent pipe.

The invention discloses a digital ink jet dyeing machine. The digital ink jet dyeing machine comprises an unwinding and cloth feeding device, an ink jet device, a drying device and a winding device which are sequentially arranged in the fabric feeding direction, wherein the ink jet device comprises a machine body, a controller, an ink box, a cleaning liquid box, a waste liquid barrel and an ink jet module; the machine body is provided with at least two groups of ink jet modules, at least one ink box, at least one cleaning liquid box and at least one waste liquid barrel; each ink jet module comprises spray heads, a positioning frame and a supporting and moving mechanism; a plurality of spray heads arranged in parallel form spray head groups; and each ink jet module comprises at least one spray head group. According to the scheme, the fixed single-channel spray heads are adopted, and ink of a single color being subjected to color matching is evenly dotted on a textile so as to complete digital pure color printing, so that the most headache point-shaped granular feeling of a conventional digital printing machine is avoided, the color development effect is greatly improved compared with the color development effect of pure color printing of the printing machine, and the digital ink jet dyeing machine has the advantages of quick cleaning.

The invention discloses industrial code-spraying equipment which comprises a conveying belt (1) and a high-definition spray printing machine (2). A fixed bracket (9) is mounted at one side of the conveying belt (1), an arc plate bracket (4) is assembled on a guide rail (3), provided with a bracket offsetting spring (5) at a part in contact with the guide rail (3) and connected with an arc plate (6), and the high-definition spray printing machine (2) is mounted on the arc plate (6) which is provided with a high-definition spray printing machine ink jet hole (7) in the middle. In the invention, under the condition that an ink jet product production line is not changed, the impact and the vibration of a spraying head are effectively eliminated, the distance change between the spraying head and the product, which is caused by the size deviation of the sprayed product, can be automatically eliminated, the spraying head is constantly attached to the product so that clear ink jet effect is kept, and the high-definition code-spraying machine can be well used in an impact and vibration environment.

Provided is an ultraviolet curable inkjet ink and an inkjet image formation method that uses said inkjet ink. The inkjet ink can be ejected from an inkjet head without being diluted by a solvent, has high photo curing sensitivity and produces high quality images with excellent weather resistance (smear resistance). The inkjet ink is characterized by a polymerizable compound which contains a maleimide compound having a chiral group and a compound selected from a vinyl ether compound and a N-vinyl compound.

[Problem] To provide an aqueous ink for inkjet recording, which realizes excellent ink ejection properties, tinctorial strength, and image fastness.

[Means for Resolution] An ink containing a pigment dispersion containing A and B, and an aqueous medium:

• A: an azo pigment represented by the following formula (1) and having at least one characteristic peak at Bragg angles (2θ) of 5 to 15° and 20 to 30° in X-ray diffraction with characteristic Cu Kα line; and
• B: a vinyl polymer containing a hydrophobic structural unit (a) and a hydrophilic structural unit (c).

The invention discloses a code spraying system and method for a large cylindrical workpiece. The system comprises a base, two supporting and weighing mechanisms which are used for supporting the two ends of the cylindrical workpiece and weighing the weight of the cylindrical workpiece, can move relative to the axial direction of the cylindrical workpiece to adjust the distance, and can drive the circumferential rotation of the cylindrical workpiece, and a code spraying mechanism erected between the two supporting and weighing mechanisms. The code spraying mechanism can axially move relative to the cylindrical workpiece, is provided with a code spraying head and can ascend, descend and rotate. A code spraying device is provided with an axial detection encoder, an end face detection mechanism and a circumference mark detection mechanism. The system is provided with a control device which is used for controlling the circumferential rotation speed of the supporting and weighing mechanisms, the axial movement speed of the code spraying device, ascending and descending of the code spraying head and switching of the code spraying direction, and the axial ink spraying speed and the circumferential ink spraying speed are respectively controlled according to the axial movement speed of the code spraying mechanism and the circumferential rotation speed of the supporting and weighing mechanisms. The code spraying system has the advantages of good flexibility, strong expansibility and the like.

The invention discloses an automatic inkjet printer, which comprises a track and an inkjet printer cabinet, wherein the track is located below the inkjet printer cabinet; the top part of the inkjet printer cabinet is provided with an ink storage box; the inkjet printer cabinet is internally provided with inkjet nozzles arranged side by side; the inkjet nozzles are connected onto the ink storage box through an inkjet pipe; a solenoid valve for controlling an inkjet switch is arranged above the ink storage box; the left top part of the ink storage cabinet is provided with an ink suction box; the left side of the track is provided with a first limiting switch; the right side of the track is provided with a second limiting switch; an operating plate is arranged on the track; the left lower corner of the operating plate is provided with a first triggering rod; the right upper corner of the operating plate is provided with a second triggering rod; and a power supply is arranged on the inkjet printer cabinet. The automatic inkjet printer provided by the invention has the advantages of simple structure, good inkjet effects and high automatic degree.

The box-type substation landscape UV painting device comprises a bottom plate, a fixing frame is fixedly connected to the upper end of the bottom plate, a supporting plate is arranged at the position, located on the rear side of the fixing frame, of the upper end of the bottom plate, and a substation is arranged at the upper end of the supporting plate; a painting mechanism is arranged in the fixing frame; adjusting mechanisms are arranged at the bottom ends of the supporting plates. A first driving mechanism is arranged on the surface of the fixing frame; a second driving mechanism is arranged on the surface of the upper end of the bottom plate and is used for driving the inkjet mechanism to move left and right for inkjet and driving the adjusting mechanism to operate when the inkjet mechanism moves to the corner position of the power transformation box; the device is simple to operate and convenient to use, can be used for painting the surface of one end of the box-type substation, can also be used for painting the arc-shaped corner parts of the two ends of the surface of the painted end, and can effectively improve the painting effect of the box-type substation and the display effect of the painted box-type substation.