CN105058986A - Cross printing method for CIJ ink-jet printer - Google Patents

Abstract

The invention discloses a cross printing method for a CIJ ink-jet printer, and the method comprises the following steps: S1, generating control data according to to-be-printed image-text data, and transmitting the control data to a printing head, wherein the control data comprises a charging ink droplet number and the charging amount of each ink droplet; S2, enabling a spraying nozzle of the printing head to spray ink droplets at a high speed, enabling a charging electrode to select the ink droplets for charging, and achieving an electric quantity difference n* delta q between each two ink droplets, which are charged sequentially, in each column of a character matrix, wherein n is not less than two, and one delta q is the electric quantity difference between two ink droplets with the shortest distance therebetween on an ink-jet object; S3, enabling each column of ink droplets to be printed on the ink-jet object and to form a column of ink points after passing through a deflection electric field, wherein the cross printing means that there is at least one ink point between ink points which are sequentially printed on the ink-jet object in each column of ink droplets. The method avoids problems of image-text mess and fuzzy during high-speed printing, and improves the quality of high-speed printing.

Description

CIJ ink jet numbering machine intersection Method of printing

Technical field

The present invention relates to industrial code-spraying machine technology field, particularly a kind of CIJ ink jet numbering machine intersection Method of printing.

Background technology

Ink jet numbering machine is that one passes through software control, use cordless at the equipment of the enterprising line identifier of product, primarily of ink-jet coded system and ink System's composition, wherein, electric deflection formula continous inkjet (continueinkjetprinter) ink jet numbering machine utilizes the deflection in the electric field of charged ink dot to realize the reduction of character, usually referred to as CIJ ink jet numbering machine.

The printing principle of continous inkjet formula ink jet numbering machine is: ink sprays from nozzle under the pressure effect of compression pump, ink is through nozzle, the piezo crystals body rod vertical tremor of nozzle interior, ink fragments into a string continuous print by the effect of piezo-electric crystal, equal and the ink droplet that size is identical of spacing also forms ink droplet stream, ink droplet is successively through overcharge pole, phase-detection electrode and high-voltage deflection electric field, finally be printed on spray printing thing (product), be specially: ink droplet is when overcharge pole, charging pole makes the electrostatic of certain electricity on part ink droplet band, the ink droplet of static electrification feeds back signal to main control system through phase-detection electrode in order to produce, to find suitable charge phase, ink droplet is through high-voltage deflection electric field, charged droplets deflects and finally drops on spray printing thing and forms character, non-charged droplets does not deflect and finally falls into accumulator tank,

In continous inkjet prints, charged droplets is printed on object by matrix queueing discipline, in this matrix, ink droplet is according to the distribution of shapes of character, can be understood as a pixel of the corresponding character in spray printing position of each ink droplet, its printing type is that first spray printing goes out a row ink droplet according to the order of sequence, then according to the order of sequence spray printing next column until this character spray printing terminates; Therefore according to the rule printed by row, in one row ink droplet, each ink droplet carries different electricity respectively, at high-voltage deflection electric field, there is different deflection angles, thus can be printed on object with different spray printing height, the source of above-mentioned ink dot electricity is related to this---charging pole, charging pole controlled by main control system, main control system is according to the character information coding of input, and generation controls signal in charging extremely, specific ink droplet is selected according to the shape of character in charging pole, gives each each ink droplet arranged different electricity by the change of charging voltage.

In summary, the step of each ink droplet charging of charging very each row is keys of control print speed and print quality, after ink droplet charging, there is interaction force (Coulomb force, repulsive interaction) between adjacent charged droplets, interaction force F computing formula is: f and quantity of electric charge Q ₁, Q ₂be directly proportional, be inversely proportional to distance r, known charging modes is: the ink droplet charge capacity linear increment of each row arranged in sequence or successively decrease, the electricity difference of adjacent drops is fixed value Δ q, when high speed spray printing, adjacent charged droplets distance closely, electricity difference between adjacent drops is minimum, therefore two charged droplets interaction forces are larger, it be can not ignore relative to deflecting electric field power, the deflection of ink droplet is actual is interaction force F and the coefficient process of deflecting electric field power, obviously, ink droplet must be made when interaction force F is larger to depart from former deflection track, print and highly also change, print accuracy lower, therefore, existing ink jet numbering machine often occurs that when flying print picture and text are chaotic, the problem such as fuzzy, print quality extreme difference.

In view of this, the present inventor proposes a kind of intersection Method of printing of print quality when improving the flying print of CIJ ink jet numbering machine, and this case produces thus.

Summary of the invention

The object of the present invention is to provide a kind of CIJ ink jet numbering machine to intersect Method of printing, the problem that when avoiding flying print, picture and text are chaotic, fuzzy, improves flying print quality.

To achieve these goals, the solution that the present invention adopts is:

CIJ ink jet numbering machine intersection Method of printing, comprises the following steps:

S1: the image, text and data printed as required generates control data, and control data is sent to printhead, and this control data includes charging ink droplet quantity and each ink droplet charge volume;

S2: the nozzle at high speeds ejection ink droplet of printhead, charging pole is chosen ink droplet and is charged, carried charge difference n Δ q between two ink droplets of successively charging in the often row ink droplet of formation character matrix, n >=2, wherein, Δ q is that electricity between the nearest ink dot of on spray printing thing two is poor;

S3: often row ink droplet intersects to be printed on spray printing thing and forms a row ink dot after deflecting electric field, intersects to print and refers to successively be printed at least one ink dot of interval between the ink dot on spray printing thing in every row ink droplet.

After adopting such scheme, beneficial effect of the present invention is: the present invention is controlled by the charging changing ink droplet, adjacent drops electricity difference is made to increase multiple Δ q by a Δ q, allow two adjacent ink dot displacements increase simultaneously, and then reduce size and the action time of Coulomb force between them (repulsive interaction) and reduce the impact of Coulomb force on original deflection track, thus improve ink droplet deflection precision, often row dot positions is more accurate on spray printing thing to make spray printing, realize the raising of printing precision and quality, the problem of picture and text smudgy and character confusion when avoiding flying print.

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Accompanying drawing explanation

Fig. 1 is the print procedure schematic diagram of one embodiment of the invention.

Fig. 2 is the row ink droplet schematic diagram being printed on spray printing thing of one embodiment of the invention.

Label declaration

Nozzle 10, charging pole 20, deflecting electric field 30, spray printing thing 40.

Detailed description of the invention

The CIJ ink jet numbering machine intersection Method of printing that the present invention discloses, comprises the following steps:

S1: the image, text and data printed as required generates control data, and control data is sent to printhead, and this control data includes charging ink droplet quantity and each ink droplet charge volume;

S2: the nozzle at high speeds ejection ink droplet of printhead, charging pole is chosen ink droplet and is charged, each character matrix is made up of some row ink droplets, carried charge difference n Δ q between two ink droplets of successively charging in the often row ink droplet of formation character matrix, n >=2, wherein, Δ q is that electricity between the nearest ink dot of on spray printing thing two is poor;

S3: because the electricity that successively two ink droplets of process carry in deflecting electric field differs n (n >=2) individual Δ q, thus be successively printed at least one ink dot of interval between the ink dot on spray printing thing in a row ink droplet, finally often row ink droplet intersects to be printed on spray printing thing and forms a row ink dot after deflecting electric field.

Refer to Fig. 1, for row 7 ink dots, ink droplet 1-7 sprays from nozzle 10 successively, successively rush to corresponding electricity through overcharge pole 20, 3 Δ q are differed between ink droplet 1 with ink droplet 2, ink droplet 2 with differ 3 Δ q between 3, ink droplet 3 with differ 5 Δ q between 4, ink droplet 4 with differ 3 Δ q between 5, ink droplet 5 with differ 2 Δ q between 6, ink droplet 6 with differ 3 Δ q between 7, ink droplet 1, 2, 3, 4, 5, 6 and 7 successively when deflecting electric field 30, deflection angle difference is larger, distance also relatively far apart, repulsive force between adjacent drops 1 is all less, finally be printed on spray printing thing 40 and form a row ink dot 1-7, ink droplet 4 and 6 is spaced between ink droplet 1 and 2, 5 and 7 are then spaced between ink droplet 2 and 3, because repulsive force reduces, ink dot 1-7 can be printed on spray printing thing 40 more accurately, the figure Chinese character finally formed is certain also more proper, writing definition effectively improves, Figure 2 shows that row 9 ink droplets, be also spaced multiple ink droplet between its continuous two ink droplets, same printing effect can be obtained.Certain row ink droplet is not limited only to 7 or 9 ink dots, is considerable for a row number of ink droplets large-sized character, and the advantage that prints of intersecting is also more obvious when large character flying print.

The present invention is controlled by the charging changing ink droplet, adjacent drops electricity difference is increased, allow two adjacent ink dot displacements increase simultaneously, and then reduce size and the action time of Coulomb force between them (repulsive interaction) and reduce it to the original impact deflecting track, thus improve ink droplet deflection precision, often row dot positions is more accurate on spray printing thing to make spray printing, realizes the raising of printing precision and quality, the problem of picture and text smudgy and character confusion when avoiding flying print.

These are only specific embodiments of the invention, the restriction not to protection scope of the present invention.All equivalent variations done according to the mentality of designing of this case, all fall into the protection domain of this case.

Claims (1)

1.CIJ ink jet numbering machine intersection Method of printing, is characterized in that, comprise the following steps:

S1: the image, text and data printed as required generates control data, and control data is sent to printhead, and this control data includes charging ink droplet quantity and each ink droplet charge volume;

S2: the nozzle at high speeds ejection ink droplet of printhead, charging pole is chosen ink droplet and is charged, carried charge difference n Δ q between two ink droplets of successively charging in the often row ink droplet of formation character matrix, n >=2, wherein, Δ q is that electricity between the nearest ink dot of on spray printing thing two is poor;

S3: often row ink droplet intersects to be printed on spray printing thing and forms a row ink dot after deflecting electric field, intersects to print and refers to successively be printed at least one ink dot of interval between the ink dot on spray printing thing in every row ink droplet.