34results about How to "Ensure printing quality" patented technology

There is provided an ink-jet printer including: an ink supply source; an ink-jet head in which a plurality of nozzle groups corresponding to a plurality of color inks are formed; a maintenance mechanism; a controller which controls the ink-jet head and the maintenance mechanism; and a filling liquid filled in the ink jet head in a state before the ink-jet printer is used for the first time, wherein, in the state before the ink-jet primer is used for the first time, the controller controls the maintenance mechanism and the ink-jet head to perform an initial discharge operation; and an amount of a liquid discharged from the ink-jet head during the initial discharge operation is adjusted based on a color difference between one of the plurality of color inks and a replaced-ink.

A microparticle / aerosol-collecting device for office machine. The microparticle / aerosol-collecting device is positioned near a printing section or a printer head. The microparticle / aerosol-collecting device includes a housing having an upper section and a lower section defining a space. The space has an opening. An absorption section is arranged in the space. The absorption section is formed with a chamber and multiple passages communicating with the chamber. The microparticle / aerosol-collecting device further includes a cleaning unit disposed in the chamber of the absorption section. The absorption section is rotationally drivable by a motor to create a negative pressure effect around the absorption section, whereby the airflow is collectively taken into the chamber of the absorption section through the passages thereof. Accordingly, the microparticles or ink aerosols are entrained by the airflow to go into the chamber. The microparticles or ink aerosols are then absorbed and removed by the cleaning unit.

The invention provides a printing method of an ink-jet printer. The method comprises the steps that a control system controls a to-be-printed object to continuously rotate and controls a printing trolley to continuously move in a first direction and to jet out a required image or a required text in a to-be-printed area. Specifically, the method comprises the following steps that 1, the boundary dimension of the to-be-printed object is acquired; 2, according to the boundary dimension, a programmable device FPGA calculates the numerical value of the frequency division coefficient N and the numerical value of the frequency multiplication coefficient M independently or through the assistance of an external processor; 3, based on the frequency division coefficient N and the frequency multiplication coefficient M, the programmable device FPGA converts fixed resolution of an encoder into actual image printing resolution; and 4, converted encoder signals are transmitted to a printing control module for printing. By the adoption of the method, the image and the text with consistent resolution and excellent quality can be printed under the condition that the boundary dimensions of the to-be-printed objects are different.

Provided are wireless temperature sensors. A temperature sensor with a flexible, large-area printed thermistor can include an negative temperature coefficient (NTC) thermistor for temperature sensing, a control circuitry for electrically connecting with the NTC thermistor and obtaining the temperature sensed by the NTC thermistor, a power source for providing power supply to the NTC thermistor and the control circuitry, and a frame element for supporting the NTC thermistor, the control circuitry and the power source, where the frame element is at least partially thermally insulated to establish thermal equilibrium within the temperature sensor. The temperature sensor can sense the temperature in a fast and accurate way due to fast thermal equilibrium established within the sensor.

A printing apparatus is provided with a heater for heating ink and a cooler for cooling ink, and comprises: an ink circulation route including a heater side route and a cooler side route which are separately provided through the heater and the cooler respectively; a switch mechanism operable to switch the ink circulation route between the heater side route and the cooler side route; and a control unit operable to control the switch mechanism. The control unit controls the switch mechanism to switch the ink circulation route to the heater side route when the ink temperature is lower than a first reference temperature, and switch the ink circulation route to the cooler side route when the ink temperature is no lower than the first reference temperature. By this configuration, the ink heating efficiency can be improved.

The invention discloses an inkjet printer signal transmission method. A signal is transmitted to at least two spray nozzle control plates through a branched connection plate. The inkjet printer signal transmission method is characterized in that the specific steps of signal transmission include that a, a detection signal is received by an interface in the branched connection plate; b, the detection signal is subjected to latent rule treatment and uneven secondary encoding, and CRC verification treatment is added on the tail of a transmission packet; c, the treated signal is transmitted to the spray nozzle control plates from an output end port in the manner that each channel has two paths; and d, the spray nozzle control plates control spray nozzles to perform printing. According to the inkjet printer signal transmission method, the signal loss can be effectively avoided due to the data transmission manner of the branched connection plate, it is avoided that signal analysis of the spray nozzle control plates fails, the anti-interference capacity is improved, the transmission reliability is improved, and therefore inkjet of a plurality of spray nozzle modules is controlled, the using field is widened, and the inkjet quality is guaranteed.

A printer, which prints by repeatedly reciprocating a rolled recording paper and ejects a printed recording paper, has therein a recording paper storage unit in which the recording paper is temporarily stored. The recording paper storage unit has a configuration formed by at least a part of the periphery of the rolled recording paper or a configuration provided in a space between the rolled paper holder and an ejection slot. This configuration eliminates the need for separately providing a configuration in which a recording paper is set aside when printing a long sheet of printed material and, at the same time, makes the printer smaller.

Print quality is ensured in a postage meter system employing an ink system and having settable modes of printing operation by detecting the type of ink system employed in the postage meter system, setting a first mode of printing operation for the postage meter system when the detected ink system is of a first type and setting a second mode of printing operation for the postage meter system when the detected ink system is of a second type. The detected information may be communicated to a data center to obtain modes of operation for the postage meter system and other corrective actions may be implemented. The method and system are applicable to other consumable item systems employing various types of consumable items.

In a printer for printing on a label of a continuous paper in a middle of feeding the continuous paper unwound from a paper sheet supply unit, while a depressed portion is disposed below a damper portion, a width adjustment guiding portion, which contacts an outer edge in a width direction of the continuous paper to guide a feed of the continuous paper, is disposed on a lower portion of the damper portion such that the lower end portion of the width adjustment guiding portion is positioned within the depressed portion.

Provided are wireless temperature sensors. A temperature sensor with a flexible, large-area printed thermistor can include an negative temperature coefficient (NTC) thermistor for temperature sensing, a control circuitry for electrically connecting with the NTC thermistor and obtaining the temperature sensed by the NTC thermistor, a power source for providing power supply to the NTC thermistor and the control circuitry, and a frame element for supporting the NTC thermistor, the control circuitry and the power source, where the frame element is at least partially thermally insulated to establish thermal equilibrium within the temperature sensor. The temperature sensor can sense the temperature in a fast and accurate way due to fast thermal equilibrium established within the sensor.

In a printer for printing on a label of a continuous paper in a middle of feeding the continuous paper unwound from a paper sheet supply unit, while a depressed portion is disposed below a damper portion, a width adjustment guiding portion, which contacts an outer edge in a width direction of the continuous paper to guide a feed of the continuous paper, is disposed on a lower portion of the damper portion such that the lower end portion of the width adjustment guiding portion is positioned within the depressed portion.

The present invention aims to provide coated printing paper having good printing quality combined with the property of decomposing hazardous substances upon exposure to light and resistance to fading.Coated printing paper comprising a coating layer containing a pigment and an inorganic adhesive and an organic adhesive on a base paper, wherein the coating layer contains 1-30 parts by weight of titanium dioxide having an average secondary particle diameter of 300-2000 nm per 100 parts by weight of the pigment and the coated paper has a PPS roughness of 0.5-5.0 μm.

The invention provides a continuous image-text splicing method for an ink-jet printer. The method comprises a printing trolley, a paper feeding mechanism and a control system, wherein the printing trolley is provided with printing nozzles; the printing nozzles move back and forth along with the printing trolley in a first direction; the paper feeding mechanism intermittently conveys a medium in the first direction at a paper feeding distance of one desktop each time; the control system is used for controlling the printing trolley, the paper feeding mechanism and the printing nozzles to work; a camera is installed at the side of the printing trolley; marks are printed on the medium in advance, and the theoretical positions of the marks are calculated by software in advance; and in the actual printing process, the camera detects and feeds back the actual positions of the marks on the medium, the software calculates parameters according to the actual positions and the theoretical positions of the marks, and the control system prints the images and texts matched with the actual positions of the marks through the parameters. According to the method, when the coil medium with continuous images and texts is printed, the position error of the medium can be corrected, and accurate position printing of each page of to-be-printed images and texts on each desktop is achieved.

The invention provides a continuous image-text splicing method for an ink-jet printer. The method comprises a printing trolley, a paper feeding mechanism and a control system, wherein the printing trolley is provided with printing nozzles; the printing nozzles move back and forth along with the printing trolley in a first direction; the paper feeding mechanism intermittently conveys a medium in the first direction at a paper feeding distance of one desktop each time; the control system is used for controlling the printing trolley, the paper feeding mechanism and the printing nozzles to work; a detection device is installed at the side of the printing trolley; marks are printed on the medium in advance, and the theoretical positions of the marks are calculated by software in advance; and in the actual printing process, the detection device firstly detects and feeds back the actual positions of the marks on the medium, the software corrects the theoretical positions according to the actual positions of the marks, and the control system carries out printing operation matched with the actual positions of the marks through the corrected information. According to the method, when the coil medium with continuous images and texts is printed, the position error of the medium can be corrected, and two desktops of images and texts which are successively conveyed are continuously aligned and seamlessly spliced.

A label sheet positioning device is provided for a barcode printer, including a pressure regulation seat having two pressure adjusting knobs and at least one universal adjusting knob mounted to a top thereof. The pressure adjusting knobs serve to adjust pressure for positioning in the upward-downward direction of a label sheet of the barcode printer. The universal adjusting knob functions to realize fine adjustment of pressure for positioning in a universal adjustable manner that the pressure regulation seat applies to the label sheet. At least one universal adjusting mechanism is coupled to bottom of the pressure regulation seat for effecting adjustment of inclination direction by the universal adjustment realized by the universal adjusting knob. At least one printing head holder is coupled to a front portion of the universal adjusting mechanism and has a bottom coupled to a printing head, whereby the printing head holder is subjected to adjustment of pressure in upward-onward direction by the pressure adjusting knobs of the pressure regulation seat and is also subjected to fine adjustment of inclination direction by the adjustment that the universal adjusting knob applies to the universal adjusting mechanism to effect universal fine adjustment for the printing head holder and the printing head in order to ensure tight engagement of the printing head with respect to the label sheet of the barcode printer. Thus, a label sheet positioning device featuring universal fine adjustment of inclination direction is provided.

A barcode label retention device is provided for a barcode printer. The barcode label retention device includes s at least one pair of label roll retainers, at least one pair of resilient elements, and at least one pair of fixing plates. The label roll retainers are mounted inside a housing of a barcode printer and spaced from each other to receive and retain a label roll therebetween. The resilient elements are arranged inside each label roll retainer, and the fixing plates are arranged inside each label roll retainer. The fixing plate is connected to the resilient element to provide the fixing plate with resiliency for inward depressibility or outward biasing so that a front portion of the fixing plate projects inwards beyond the label roll retainer to abut against opposite ends of the label roll, whereby the label roll can be securely held by the two fixing plates engaging the opposite ends thereof and the path of a winding / unwinding operation can be stabilized.

The invention provides a blind hole printing machine and a printing method for removing blind hole air closing, and relates to the technical field of blind hole printing. The blind hole printing machine comprises a workbench and a blind hole positioning mechanism, wherein the blind hole positioning mechanism comprises a CCD lens, and the CCD lens is positioned above the workbench and is used for positioning a blind hole of an electronic product on the workbench. The blind hole printing machine is reasonable in structure, high in practicability, accurate in positioning and capable of ensuring the printing quality and precision.

The invention provides a wide-breadth inkjet printer, which is suitable for the technical field of inkjet printing. The wide-breadth inkjet printer comprises a stand, a rotatable driving roller and a compression roller, wherein the rotatable driving roller is arranged on the stand in a spanning way, the compression roller is arranged below the driving roller and can be used for butting and compressing a printing medium to the driving roller, and the bottom of the compression roller is supported by compression units uniformly distributed along the length direction of the compression roller. Accordingly, by means of supporting of a plurality of compression units, the bending and deformation of the compression roller are greatly alleviated, the compression force of the compression roller on the printing media is more uniform in distribution, so that the printing medium is prevented from wrinkling or deflecting and is driven stably and reliably, and thus, the inkjet printing quality of the inkjet printer is guaranteed.

A multidirectional adjustable screen printing system comprises a screen frame, a left screen frame longitudinal adjusting device, a right screen frame longitudinal adjusting device and a scraper baseplate. A scraper connected with the scraper base plate is suspended over the screen frame. The left side edge and the right side edge of the screen frame are connected with the bottom of the left screen frame longitudinal adjusting device and the bottom of the right screen frame longitudinal adjusting device respectively. Each longitudinal frame adjusting device in the left screen frame longitudinal adjusting device and the right screen frame longitudinal adjusting device comprises a vertical fixing plate, an inner frame guide rail, an outer frame guide rail, a top frame rail base, a top frameback plate, a lateral adjusting rod and a top adjusting rod, wherein the vertical fixing plate slides up and down along the inner frame guide rail and the outer frame guide rail to adjust the heightand the inclination angle of the screen frame, and the lateral adjusting rod and the top adjusting rod fix the adjusting effect. The multidirectional adjustable screen printing system not only is highin adjustability, capable of adjusting the height at two positions and wide in application range, but also good in printing quality, high in printing efficiency, high in firmness and high in stability.

The invention discloses an inkjet printing device, comprising a printing part, a feeding part and a control system, the feeding part includes a feeding station and a printing station, and a jig is arranged at the feeding station of the feeding part , the jig is used to position the object to be printed on the loading station in the feeding part before inkjet printing, and separate the object to be printed before the positioned object to be printed enters the printing station. The inkjet printing device of the present invention reduces the cost of the entire device, saves working time, improves the positioning stability of the object to be printed, and operates in a semi-automatic mode in which feeding and printing are simultaneously performed Improve printing quality and printing efficiency; and design an eccentric adjustment mechanism to ensure the safety and reliability of the entire device.

In an inkjet printer, an ultraviolet irradiator includes a first irradiation portion disposed at the same position as a color ink ejection portion in a front-back direction and a third irradiation portion disposed on the front side of a clear ink ejection portion in the front-back direction, where at the time of printing in a gloss tone printing mode, an average illuminance of a fifth irradiation portion that forms the front side portion of the first irradiation portion is lower than an average illuminance of a fourth irradiation portion that forms the back side portion of the first irradiation portion.

The present invention provides a printing method for inkjet printers, wherein with the control system, the object to be printed continuously rotates, carriage traverses in the Y axis direction and print heads in carriage jet ink on the target printing position. Specifically, firstly get the diameter (or radius) of the object to be printed. Secondly, based on the diameter (or radius) acquired, FPGA processor calculates a frequency division factor N and a multiplication factor M independently or with the assistance of an external processor. Thirdly, with the said factor N and factor M, FPGA processor converts the encoder resolution (which is an inherent value of the encoder resolution) to calculate the actual image printing resolution. Fourthly, signals which contain the converted resolution are sent to the printing control system to print images. The printing method of the present invention can ensure excellent printing quality and uniform resolution for objects with different diameter (or radius).

In an inkjet printer, an ultraviolet irradiator includes a first irradiation portion disposed at the same position as a color ink ejection portion in a front-back direction and a third irradiation portion disposed on the front side of a clear ink ejection portion in the front-back direction, where at the time of printing in a gloss tone printing mode, an average illuminance of a fifth irradiation portion that forms the front side portion of the first irradiation portion is lower than an average illuminance of a fourth irradiation portion that forms the back side portion of the first irradiation portion.