CN109641451A

CN109641451A - Ink-jet printing apparatus and ink jet printing method

Info

Publication number: CN109641451A
Application number: CN201780033316.2A
Authority: CN
Inventors: 安部克规; 时松贤治; 手岛渡; 吉野正巳
Original assignee: PMT Co Ltd
Current assignee: PMT Co Ltd
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2019-04-16
Anticipated expiration: 2037-06-05
Also published as: KR20190005909A; TWI708688B; JPWO2018225128A1; WO2018225128A1; CN109641451B; KR102124597B1; TW201902722A; JP6661161B6; JP6661161B2

Abstract

A kind of ink-jet printing apparatus and ink jet printing method, printing equipment (1) has head unit (4), and then have control unit (7), head unit (4) has head module (43, and module mobile mechanism (47) 46), head module (43, it 46) is by the head (41 of the nozzle (48) of discharge ink droplet arranged in rows, 42, 44, 45) with the substantially orthogonal orthogonal direction (20) in the direction arranged in rows (21) of nozzle (48) be arranged side by side form, module mobile mechanism (47) makes multiple head modules (43, 46) the arbitrary head module in is mobile in direction arranged in rows (21) independently of other head modules, control unit (7) carries out controlling (80) to the pattern switching switched between multiple printing modes based on printing condition, it follows and arranges black liquid Direction arranged in rows (21) substantial middle position of food (9) out carries out at least one of the centering control (81) of direction arranged in rows (21) movement of head module (43,46) and the module replacing control (82) for arbitrarily replacing the head module (43,46) used.

Description

Ink-jet printing apparatus and ink jet printing method

Technical field

The present invention relates to ink-jet printing apparatus and ink jet printing methods.In detail, it relates to each with low cost reply The printing mode of kind various kinds, moreover, the diagonal etc. relative to printed medium can also ensure that the ink jet printing of high press quality Device and ink jet printing method.

Background technique

In the past, in the ink-jet printing apparatus that drops out from nozzles discharge is carried out dot printing on printed medium, The head for the single wide cut that multiple nozzles are arranged side by side in direction (hereinafter referred to as " direction arranged in rows ") arranged in rows In the case of, because the processing of nozzle needs high precision, bad generation rate is high, maintenance, the replacement of the head in device work Spend the time that multiple so-called full sides is therefore arranged side by side in direction arranged in rows for the narrow head that nozzle quantity lacks The head unit of position Mobyneb has been known (for example, referring to patent document 1).In addition, as printed medium above-mentioned, such as It can be commercial product containers, paper pulp, paper, rubber, food, the tablets such as corrugated paper, film, plastic bottle, pouch, the metal can of strip Equal drugs etc., are not the printed mediums for being particularly limited to raw material, shape.

According to this technology, because the nozzle quantity of each head is few, not only head of the bad generation rate than wide cut It is low, it can reduce cost of parts, and because only replacement produces the head of undesirable condition i.e. by assemble and disassemble each head can individually Can, so the maintenance of the head in device work, replacement are easy, maintainability can be made to improve.

Citation

Patent document

Patent document 1: Japanese Unexamined Patent Publication 9-1789 bulletin

Summary of the invention

Problems to be solved by the invention

However, in ink-jet printing apparatus described in Patent Document 1, although each head in head unit as previously described can be individual Ground assembly and disassembly, but the nozzle rows being substantially made of multiple nozzles are fixed on head in direction arranged in rows at predetermined intervals to be kept On the pedestals such as frame (hereinafter referred to as " pedestal ").Therefore, make the multiple of the direction arranged in rows formed by the ink droplet from nozzle The wide cut printing of the length of dot (hereinafter referred to as " line of dots ") and the substantially orthogonal direction in direction arranged in rows are (following Referred to as " orthogonal direction ") so that printed within the unit time the increased high speed printing of dot quantity, make printed dot When each printing modes such as the high density printing that density is got higher are printed, need to be changed to original head unit for each printing die The dedicated head unit for the specified position that the dedicated head of formula is fixed on the base, the type for the head unit not being used only increase, part Increased costs, management cost, the inventory cost of part also increase.

In turn, by origin Subnormal subgroup direction side, such as the fortune relative to the printed medium under being transported to the end The dot for sending the ink droplet that direction is the front of front side to be formed and the origin Subnormal subgroup direction other side, such as be relative to carriage direction The dot that the ink droplet of the back of rear side is formed alternately configures on the identical column in direction arranged in rows, carries out above-mentioned highly dense When degree printing, left between these fronts and back greatly and in the case where orthogonal direction distance, if printed medium is because of skin Band etc. transports the diagonal of component and is transported with being gradually deviated to direction side arranged in rows, then during transport, printing is situated between The deviation in the direction arranged in rows of matter becomes larger, and generates overlapping between the dot generated by front and the dot generated by back. Therefore, it generates big dot to deviate, press quality significantly deteriorates.In addition, the width direction of head, printed medium etc. and it is above-mentioned at Column setting direction is substantially uniform, and the carriage direction of printed medium etc. refers to the direction substantially uniform with orthogonal direction above-mentioned.

The present invention is the invention made in view of the foregoing problems, can be various with low cost reply to provide one kind Printing mode, moreover, the diagonal etc. relative to printed medium can also ensure that ink-jet printing apparatus and the spray of high press quality For the purpose of ink print method.

For the means to solve the problem

In order to achieve the above purpose, ink-jet printing apparatus of the invention has head unit, and the head unit has head mould Block and module mobile mechanism, the head module be by the head of the nozzle of discharge ink droplet arranged in rows with former nozzle in column The substantially orthogonal orthogonal direction of setting direction is arranged side by side and forms, and the module mobile mechanism makes any in multiple head modules Head module it is mobile in aforementioned direction arranged in rows independently of other head modules.

Moreover, because head unit, which has, is being arranged side by side general with the substantially orthogonal orthogonal direction in the direction arranged in rows of nozzle Head module made of the head of the nozzle of discharge ink droplet arranged in rows, so can be with the switching of low cost reply printing mode. That is, being intensively configured to defined head module because head required for specific line of dots portion can will be formed, only pass through Adjust the direction position arranged in rows of this head module, it will be able to be easy to change the forming position in line of dots portion in simple structure.

In turn, because head unit has make arbitrary head module in multiple head modules independently of other head modules at The mobile module mobile mechanism of column setting direction, so coping with various printing modes.That is, because can make to be formed Head required for specific line of dots portion is mobile in direction arranged in rows according to each head module, so can be further fine The forming position in ground change line of dots portion.

Therefore, because having the head unit with such head module and module mobile mechanism, with wide cut above-mentioned print When each printing modes such as brush, high speed printing, high density printing are printed, do not need head unit integral replacing to be each printing die The dedicated head unit of formula, thus can using head unit type irreducible minimum, make cost of parts, part management at Originally, the either of which of inventory cost is greatly reduced.Moreover, as previously mentioned, by the front side by leaving greatly in orthogonal direction Each dot that head module and rear side head module are formed alternately configures on the identical column in direction arranged in rows, carries out high density When printing, even if gradually being transported with deviateing to direction side arranged in rows in printed medium because belt etc. transports the diagonal of component In the case where bringing, only by adjusting the direction position arranged in rows of each head module, it will be able to make to be formed by front side head module Dot and the dot that is formed by rear side head module between overlapping mitigate, be able to suppress the generation that big dot deviates, make to print Brush quality greatly improves.

In addition, have control unit, the switching control of described control unit execution pattern, centering control and module replacing control At least one of, pattern switching control is switched over based on printing condition between multiple printing modes；Centering control The direction substantial middle position arranged in rows for following the printed medium that aforementioned black liquid is discharged, carry out head module arranged in rows The movement in direction；The head module used is arbitrarily replaced in module replacing control.In the case, each head module is by pattern switching Control automatically moves to the direction position arranged in rows for being best suited for each printing mode, and each head module is controlled automatically by centering It is moved to the direction substantial middle position arranged in rows of each printed medium, when by module replacing control and situation, the use of nozzle Between the head module that is correspondingly automatically moved in use and it is standby in head module replaced.Thereby, it is possible to promptly carry out Presswork can be such that operating efficiency, press quality improves significantly.

In addition, having the printing mode input unit of the applicable printing mode of selection, also, carrying out previous mode switching When control, the first printing mode of switching, the second printing mode and third printing mode, in first printing mode, by mould Each head module of the block mobile mechanism before and after direction arranged in rows configures aforementioned orthogonal direction with deviateing, by origin Subnormal subgroup side The front side line of dots portion and the origin Subnormal subgroup direction other side that the dot formed to the ink droplet of the front side head module of side arranges The rear side line of dots portion for the dot arrangement that the ink droplet of rear side head module is formed is continuously disposed in the identical column in direction arranged in rows On, the line of dots of a column in direction arranged in rows is formed as a result, it is arranged in rows in orthogonal direction, in second printing die In formula, aforementioned each head module is configured to by module mobile mechanism to see setting direction substantial middle position weight in column in orthogonal direction It is folded, by aforementioned front side line of dots portion and the configuration of rear side line of dots portion on the different column in direction arranged in rows, as a result, with the The roughly the same dot density of one printing mode forms the two column line of dots in direction arranged in rows, sets in column in orthogonal direction It sets, in the third printing mode, aforementioned each head module is configured to see setting in column by module mobile mechanism in orthogonal direction Set direction substantial middle position overlapping, alternately configured on the identical column in direction arranged in rows aforementioned front side line of dots portion and Each dot in rear side line of dots portion is set with the dot density formation higher than the first printing mode, the second printing mode in column as a result, A column line of dots in direction is set, it is arranged in rows in orthogonal direction, in the case, based on from printing mode input unit Printing mode signal, under the first printing mode, by the way that front side line of dots portion and rear side line of dots portion to be continuously disposed in column On the identical column of setting direction, the dot quantity in direction arranged in rows, which becomes, closes front side line of dots portion and rear side line of dots portion And dot quantity, wide cut printing can be carried out, under the second printing mode, by by front side line of dots portion and rear side line of dots Portion configures on the different column in direction arranged in rows, and the dot quantity that can carry out orthogonal direction becomes times of the first printing mode Several high speed printings passes through circle on front side of alternately configuring on the identical column in direction arranged in rows under third printing mode Each dot in dotted line portion and rear side line of dots portion, the dot quantity that can carry out direction arranged in rows become the first printing mode, the The high density of the multiple of two printing modes is printed, and thereby, it is possible to based on by the pre-selected printing die of printing mode input unit Formula signal only change front side line of dots portion and the allocation position in rear side line of dots portion, the size of the dot of each line of dots it is simple Control structure freely carries out wide cut printing above-mentioned, high speed printing, high density printing, can by control unit, be used to print Driving structure of the head module of pattern switching etc. simplifies, and seeks the reduction of installation cost, the raising of maintainability.

In addition, being seen under aforementioned first printing mode in aforementioned orthogonal direction, in adjacent front side head module and rear side head The nozzle overlapping region that the nozzle overlapping of the specified quantity of each head module is formed between module, makes ink droplet only from the nozzle overlay region One side of head module of front and back in domain is discharged, in the case, by being discharged in nozzle overlapping region from head module appropriate Ink droplet is seen in orthogonal direction, and front side dot can be connected by the dot of the specified quantity on the identical column in direction arranged in rows Between line portion and rear side line of dots portion.It is seen as a result, in orthogonal direction, even if the head module of front and back phase due tos deformation of head unit etc. It is mutually left in direction arranged in rows, or the inner end in the direction arranged in rows of adjacent head module generates spray nozzle clogging, also can It is enough to inhibit to generate dot omission between front side line of dots portion and rear side line of dots portion.

In addition, under aforementioned first printing mode, if the width of aforementioned printed medium is than the print that is carried out by front side head module Brush the width in region, the printing zone carried out by rear side head module width at least one party it is narrow, then release aforementioned first printing Mode, and the head module with the printing zone wider than aforementioned printed medium width is made to be moved to and can print in direction arranged in rows The position of the entire width of aforementioned printed medium is brushed, carries out the single module printing movement printed by single head module as a result, In the case, the inner end in direction arranged in rows of adjacent head module can not used but setting in column using head module It is printed the inside for setting direction.Even if it is stifled to generate nozzle for the inner end in the direction arranged in rows of adjacent head module as a result, Plug is also able to suppress and generates dot omission in Printing Department.

In addition, having the deviation that aforementioned printed medium is transported to the direction arranged in rows for transporting component of head unit by detection The diagonal sensor of amount, also, under aforementioned third printing mode, based on being asked from the bias detected by aforementioned diagonal sensor The inclination angle of transport component out carries out that each head module is made to leave each other mobile diagonal reply movement in direction arranged in rows, Alternately to configure each circle in aforementioned front side line of dots portion and rear side line of dots portion on the identical column in direction arranged in rows Point can be distinguished the head module of front and back automatically in column based on the offset signal from diagonal sensor in the case Setting direction is mobile, mitigates the overlapping of the dot between front side line of dots portion and rear side line of dots portion.Even if printing is situated between as a result, Matter is gradually transported to direction side arranged in rows with deviateing because transporting the diagonal of component, is also able to suppress and is generated big Dot deviates, and press quality can be made to greatly improve.

In addition, having the position sensor for the direction position arranged in rows for detecting aforementioned printed medium, also, before progress When stating centering control, based on the direction position arranged in rows detected by aforementioned location sensor, carry out making each head module in column The mobile centering movement of setting direction, to see the direction arranged in rows of printed medium and head module in aforementioned orthogonal direction substantially Central location is substantially uniform, in the case, can based on the direction position signal arranged in rows from position sensor will before Head module afterwards is automatically mobile in direction arranged in rows respectively, so that each head module is followed printed medium to usually become printing The direction substantial middle position arranged in rows of medium.Printing Department will not deviate in direction arranged in rows as a result, can make printed matter Matter greatly improves.

In addition, having the nozzle sensor of the discharge situation for the nozzle for detecting aforementioned head module, also, carrying out aforementioned mould When block replacement control, at least one party of the first service action and the second service action is carried out, first service action is based on coming Abnormal from the nozzle of former nozzle sensor generates signal, the head that will be produced abnormal head module and be changed in standby Module, second service action uses the process time signal after starting based on each head module, in each defined accumulation Using the time, the head module in using is changed to the head module in standby, in the case, in the first service action, base In generating signal extremely, the head module of front and back is automatically mobile in direction arranged in rows respectively, will be in position of readiness and normal Head module be set in using position, in the second service action, based on by time signal by the head module of front and back respectively from It is dynamicly mobile in direction arranged in rows, the head module for being in position of readiness and maintenance care is over is set in using position.By This, can be quickly responded to the failures such as the spray nozzle clogging in presswork by the first service action, imitate the operation of presswork Rate significantly improves, and multiple head modules can be regularly replaced by the second service action, inhibits ink because without using placing for a long time And dries out and generate spray nozzle clogging.

In addition, aforementioned modules mobile mechanism has multiple base members of fixed aforementioned each head module；It is more at this by crossbearer Multiple guiding axis in the aforementioned direction arranged in rows of a base member；A pair of of scaffold at the both ends of the fixed bearing guiding axis Component；It can be slidably installed on aforementioned guiding axis in axis direction, and link the sliding axle of fixed said base component It holds；And the sliding driving for sliding the sliding bearing along guiding axis in direction arranged in rows between aforementioned support frame members Portion can form module mobile mechanism by following simple structure in the case, that is, mounting secures the more of head module A base member, through sliding bearing can between support frame members in crossbearer on the guiding axis in direction arranged in rows in column Setting direction slidably configures.Thereby, it is possible to seek the raising of the reduction of installation cost, maintainability, and also, it is possible to realize dresses The densification of the head unit of module mobile mechanism is entered.

In addition, aforementioned guiding axis includes single shared guiding axis, the single shared guiding axis is folded in adjoining Orthogonal direction front and back said base component between, and be fixed on for slidably can installing to be concatenated in axis direction Each sliding bearing on two base member, in the case, because by leading between the base member of the front and back of orthogonal direction Single shared guiding axis is only made into axis, sharing can slidably match herein on guiding axis through sliding bearing in direction arranged in rows The base member for setting front and back, so the distance between base member of front and back of orthogonal direction can be shortened.Even if printing as a result, Medium is gradually transported to direction side arranged in rows with deviateing because transporting the diagonal of component, also because being in each pedestal The distance between head module of front and back on component is short, and can make the dot formed by front side head module and by rear side head module Overlapping between the dot of formation mitigates, and is able to suppress the generation that big dot deviates, greatly improves press quality.

In addition, aforementioned sliding driving portion has ball wire rod mechanism, the ball wire rod mechanism will be with setting in each of front The ball screw for stating the motor drive shaft connection of the electric motor on head module is inserted in the cunning linked with aforementioned each head module by screw thread Dynamic bearing is formed in the threaded hole in direction arranged in rows, by making the motor drive shaft carry out rotation driving, make each head module with Aforementioned sliding bearing slides in direction arranged in rows together, in the case, can be by the sliding axle that makes that each head module is arranged in It holds and cunning is formed by the mobile such simple structure in direction arranged in rows that is rotated in of the ball screw carried out by electric motor Dynamic driving portion.Thereby, it is possible to seek the raising of the reduction of installation cost, maintainability, and also, it is possible to realize be packed into sliding driving The further densification of the head unit in portion.

In addition, aforementioned sliding driving portion has ball wire rod mechanism and synchronous belt mechanism, the ball wire rod mechanism will The ball screw linked with the motor drive shaft of the single electric motor on the head module that aforementioned one side is arranged in is inserted in by screw thread The sliding bearing linked with the head module of the aforementioned one side in the preceding next two columns head module of aforementioned orthogonal direction is formed in column In the threaded hole of setting direction, by making the motor drive shaft carry out rotation driving, make the head module and aforementioned sliding bearing one of a side It rises and is moved along guiding axis in direction arranged in rows, the synchronous belt mechanism is by synchronous belt wound on by being pivotally supported on aforementioned branch It holds between a pair of of belt pulley near frame parts, links a side's in the belt part of the head module towards aforementioned one side The sliding bearing of head module, and link in the belt part of the head module towards another party the cunning of the head module of the another party Dynamic bearing, make as a result, the head module of another party also follow the head module of aforementioned one side direction arranged in rows movably to The opposite side in direction arranged in rows is mobile, in the case, sliding driving portion can be formed by following simple structure, that is, Make the head module of a side via electric motor carry out rotation driving ball screw together with sliding bearing in direction arranged in rows It is mobile, setting the head module of another party in column together with other sliding bearings with the synchronous belt that this sliding bearing links It is mobile to set direction.The reduction of installation cost, the raising of maintainability are sought as a result, and also it is possible to realize be packed into slide driving portion Head unit further densification.

It in turn, is only the single electric motor being arranged on the head module of a side as driving source, and by respective Drive motor the case where driving the preceding next two columns head module of orthogonal direction compare, be capable of the drop of further promote device cost Low, head unit densification.

In addition, aforementioned modules mobile mechanism has multiple base members of the fixed aforementioned each head module of mounting；Multiple Multiple guiding axis of the front and back of the orthogonal direction of base member by crossbearer in direction arranged in rows；The two of the fixed bearing guiding axis The support frame members at end；It can be slidably installed on aforementioned guiding axis in axis direction, and link fixed said base The sliding bearing of component；With sliding driving portion, the sliding driving portion includes the front and back for being folded in adjacent orthogonal direction Between said base component, and the rotating forward threaded portion being made of the screw thread mutually inverted and reversion threaded portion are carved and be located at periphery Single shared ball screw, aforementioned rotating forward threaded portion and reversion threaded portion are passed through screw thread respectively and are inserted in aforementioned two base portion Each sliding bearing of part is formed in the threaded hole in direction arranged in rows, then, is made and aforementioned shared ball by electric motor Screw rod one end connection motor drive shaft carry out rotation driving, make as a result, each head module together with aforementioned sliding bearing mutually at The opposite Slideslip of column setting direction can be formed sliding driving portion, that is, make in the case by following simple structure Each head module via electric motor carry out rotation driving shared ball screw together with sliding bearing mutually in side arranged in rows To opposite Slideslip.Thereby, it is possible to seek the raising of the reduction of installation cost, maintainability, and also, it is possible to realize be packed into slide The further densification of the head unit of dynamic driving portion.

In turn, because single shared ball screw is only arranged between the base member before and after orthogonal direction, herein Sharing can be in the base member before and after direction arranged in rows slidably configures, so can shorten through sliding bearing on ball screw The distance between base member of front and back of orthogonal direction.Even if as a result, printed medium because transport component diagonal due to gradually to Direction side arranged in rows is transported with deviateing, because of the distance between the head module of front and back on each base member Also short, so the overlapping between the dot formed by front side head module and the dot formed by rear side head module can be made to mitigate, It is able to suppress the generation that big dot deviates, greatly improves press quality.

On this basis, as driving source, the single electric motor shared on ball screw is only set, with The case where driving the preceding next two columns head module of orthogonal direction by respective electric motor, is compared, and more promote device cost is capable of It reduces, the densification of head unit.

In addition, will there is aforementioned head unit the ink to aforementioned each head module supply ink to manage and carry out the ink droplet from nozzle Be discharged the feed system path portion of the cable of control direction arranged in rows configure across aforementioned support frame members with set The opposite side of the drive system configuration section of aforementioned electric motor has been set, in the case, feed system path portion and driving system System configuration section will not interfere, and can substantially ensure peripheral space.As a result, in the assembling of head unit, maintenance when to confession It is become easy to the contact in system path portion, drive system configuration section, it is possible to realize assembling operation, maintainabilities significantly to mention It is high.

In addition, aforementioned head module by aforementioned orthogonal direction be arranged side by side two head module compositions, in the case, with The case where three or more head modules are arranged side by side is compared, and can form head unit with simpler structure.Thereby, it is possible to seek to fill It is set to the raising of reduction originally, maintainability, and also it is possible to realize the densifications of head unit.

(technical solution 16)

In order to achieve the above purpose, ink-jet printing apparatus of the invention has head unit, and the head unit has head mould Block and module mobile mechanism, the head module is will be arranged in rows in the width direction orthogonal with the carriage direction of printed medium It is arranged side by side and forms in aforementioned carriage direction to the head of the nozzle of printed medium discharge ink droplet, the module mobile mechanism makes more Arbitrary head module in a head module is mobile in foregoing width direction independently of other head modules.

Moreover, because head unit have by the width direction orthogonal with the carriage direction of printed medium it is arranged in rows to Head module made of the head that the nozzle of ink droplet is discharged in printed medium is arranged side by side in carriage direction, so can be with low cost reply The switching of printing mode.That is, being intensively configured to defined head because head required for specific line of dots portion can will be formed Module, so only by adjusting the width position of this head module, it will be able to easily change line of dots in simple structure The forming position in portion.

In turn, make the arbitrary head module in multiple head modules independently of other head modules in width because head unit has The mobile module mobile mechanism in direction is spent, so coping with various printing modes.That is, because can make to be formed specific Line of dots portion required for head it is mobile in width direction according to each head module, so circle further can be changed imperceptibly The forming position in dotted line portion.

Therefore, because having the head unit with such head module and module mobile mechanism, so with width above-mentioned When each printing modes such as width printing, high speed printing, high density printing are printed, do not need head unit integral replacing to be each print The head unit of brush mode-specific, thus can using head unit type irreducible minimum, make the management of cost of parts, part Cost, the either of which of inventory cost are greatly reduced.Moreover, as previously mentioned, by by left in carriage direction greatly before Each dot that side head module and rear side head module are formed alternately configures the progress high density print on the identical column of width direction When brush, even if being gradually transported with deviateing to width direction side in printed medium because belt etc. transports the diagonal of component In the case where, only by adjusting the width position of each head module, it will be able to make the dot formed by front side head module and by The overlapping between dot that rear side head module is formed mitigates, and is able to suppress the generation that big dot deviates, makes press quality substantially It improves.

In order to achieve the above purpose, ink jet printing method of the invention has the first preparatory process and the second beam worker Sequence, in first preparatory process, by will be arranged in rows in the width direction orthogonal with the carriage direction of printed medium It is arranged side by side to the head of the nozzle of printed medium discharge ink droplet in aforementioned carriage direction, forms head module, it is quasi- described second In standby process, make the arbitrary head module in multiple head modules independently of other head modules in width side by module mobile mechanism To movement.

Moreover, because having by will be arranged in rows to print in the width direction orthogonal with the carriage direction of printed medium The head of the nozzle of brush medium discharge ink droplet is arranged side by side and is formed the first preparatory process of head module in aforementioned carriage direction, so It can be with the switching of low cost reply printing mode.That is, because the concentration of head required for specific line of dots portion can will be formed Ground is configured to defined head module, only by adjusting the width position of this head module, it will be able to be easy in simple structure Change the forming position in line of dots portion.

In turn, because have makes the arbitrary head module in multiple head modules independently of other heads by module mobile mechanism Module second preparatory process mobile in width direction, so coping with various printing modes.That is, because can make It is mobile in width direction according to each head module to form head required for specific line of dots portion, so can be further fine The forming position in ground change line of dots portion.

Therefore, because such first preparatory process, the second preparatory process are carried out continuously, so can be with width above-mentioned When each printing modes such as width printing, high speed printing, high density printing are printed, do not need head unit integral replacing to be each print The head unit of brush mode-specific, can using head unit type irreducible minimum, make cost of parts, part management at Originally, the either of which of inventory cost is greatly reduced.Moreover, as previously mentioned, by the front side by leaving greatly in width direction Each dot that head module and rear side head module are formed alternately configures the progress high density printing on the identical column of width direction When, even if be gradually transported with deviateing to width direction side in printed medium by the diagonal of the transport component such as belt In the case of, only by adjusting the width position of each head module, it will be able to make the dot formed by front side head module and by rear The overlapping between dot that side head module is formed mitigates, and is able to suppress the generation that big dot deviates, mentions press quality substantially It is high.

In order to achieve the above purpose, ink jet printing method of the invention has preparatory process and control process, described In preparatory process, being arranged multiple will be situated between to the printing the width direction orthogonal with the carriage direction of printed medium is arranged in rows Head module made of the head that the nozzle of ink droplet is discharged in matter is arranged side by side in carriage direction, prepares to make appointing in multiple head module The head module of the meaning head unit mobile in width direction independently of other head modules, it is single by control in the control process Member is controlled between the pattern switching control switched over multiple printing modes based on printing condition after the preparatory process, is followed The width direction substantial middle position of aforementioned printed medium carries out the mobile centering control of width direction and arbitrarily of head module Replace at least one of the module replacing control of the head module used.

Moreover, in the preparation process, setting is multiple will be in the transport side with printed medium because having preparatory process Be arranged side by side in carriage direction to the head of the orthogonal width direction nozzle arranged in rows to printed medium discharge ink droplet and At head module, prepare that arbitrary head module in multiple head module can be made to move independently of other head modules in width direction Dynamic head unit, so can be with the switching of low cost reply printing mode.That is, because specific line of dots portion can will be formed Required head is intensively configured to defined head module, so only by adjusting the width position of this head module, energy Enough forming position for being easy to change line of dots portion in simple structure.Moreover, coping with various printing modes.That is, It, can be more because head required for forming specific line of dots portion can be made mobile in width direction according to each head module Further imperceptibly change the forming position in line of dots portion.

In turn, it because having control process, in the control process, is based on after the preparatory process by control unit Printing condition control controls the pattern switching switched over multiple printing modes, follows the width direction of aforementioned printed medium Substantial middle position carries out the centering control of the width direction movement of head module and arbitrarily replaces the module of the head module used At least one of replacement control, so presswork can be carried out promptly, can be such that operating efficiency, press quality significantly mentions It is high.That is, the width position that each head module is automatically moved to be best suited for each printing mode is controlled by pattern switching, by Centering controls the width direction substantial middle position that each head module is automatically moved to each printed medium, is controlled by module replacing With the situation of nozzle, the head module being correspondingly automatically moved in use using the time and it is standby in head module replaced.

In addition, have the first control process, the second control process and third control process in aforementioned control process, In the first control process, by printing mode input unit from the first printing mode, the second printing mode and third printing die The applicable printing mode of input selection in formula configures aforementioned head mould with deviateing in width direction in first printing mode Block, by the front side line of dots portion of the dot formed by the ink droplet of the front side head module in front of carriage direction arrangement and by coming from The rear side line of dots portion for the dot arrangement that the ink droplet of the rear side head module at carriage direction rear is formed is continuously disposed in width direction Identical column on, a column line of dots in formation width direction, arranged in rows in carriage direction as a result, it is described second print In brush mode, aforementioned each head module is configured to by module mobile mechanism to see width direction substantial middle position weight in carriage direction It is folded, by aforementioned front side line of dots portion and the configuration of rear side line of dots portion on different column, as a result, with the first printing mode substantially The two column line of dots in identical dot density formation width direction, it is arranged in rows in carriage direction, in the third printing die In formula, aforementioned each head module is configured to by module mobile mechanism to see that width direction substantial middle position is overlapped in carriage direction, Each dot in aforementioned front side line of dots portion and rear side line of dots portion is alternately configured on the identical column of width direction, by This is being transported with a column line of dots in the dot density formation width direction higher than the first printing mode, the second printing mode Direction is arranged in rows, in the second control process, is controlled by the pattern switching of control unit, based in aforementioned first control Printing mode in process selection, sets the width position of each head module and the discharge condition of ink droplet, in the third control In process processed, from the nozzle of each head module of head unit to passing through the head unit with aforementioned head module and module mobile mechanism Ink droplet is discharged on printed medium to be printed.

Moreover, being inputted because having the first control process above-mentioned in control process based on printing mode is come from Front side line of dots portion and rear side line of dots portion are consecutively provided in by the printing mode signal of device under the first printing mode On the identical column of width direction, the dot quantity of width direction becomes front side line of dots portion and rear side line of dots portion as a result, The dot quantity incorporated can carry out wide cut printing, under the second printing mode, by by front side line of dots portion and rear side dot Line portion configures on the different column of width direction, and the dot quantity that can carry out carriage direction becomes the multiple of the first printing mode High speed printing, under third printing mode, pass through on the identical column of width direction alternately configuration on front side of line of dots portion With each dot in rear side line of dots portion, the dot quantity that can carry out width direction becomes the first printing mode, the second printing mode Multiple high density printing.

In turn, because having the second control process, in the second control process, by the pattern switching control of control unit System sets the discharge of the width position and ink droplet of each head module based on the printing mode selected in the first control process Condition, so it is possible to realize the reductions of installation cost, the raising of maintainability.That is, can be based on pre- by printing mode input unit Each head module is automatically moved to the width position for being best suited for each printing mode by the printing mode signal first selected, from By ground carry out wide cut printing, high speed printing, high density printing, can simplified control unit, for printing mode switching head mould The driving structure etc. of block.

On this basis, because having third control process, in third control process, from each head mould of head unit The nozzle of block is discharged what ink droplet was printed on the printed medium by the head unit with head module and module mobile mechanism, So the printing of low cost, high-quality can be carried out.That is, head unit itself is because be able to maintain that fixed shape in presswork The printing surface of printed medium is unchangeably moved to the discharge destination of ink droplet to print, so consolidating with by printed medium by state It is fixed, make head unit movement to compare the case where printing, does not need the large-scale device mobile for head unit, installation cost It reduces, press quality also improves.Moreover, can be to (hereinafter referred to as " texts such as printed medium printing word, figure, marks Deng ").That is, the line of dots that ink droplet forms column-shaped can be discharged on the printed medium in carriage direction movement from nozzle, so that this Line of dots is arranged in rows in width direction, and defined text etc. is printed on printed medium.

The effect of invention

Ink-jet printing apparatus and ink jet printing method for the present invention can cope with various printings with low cost Mode, even if moreover, becoming the diagonal etc. relative to printed medium can also ensure that the ink-jet printing apparatus of high press quality And ink jet printing method.

Detailed description of the invention

Fig. 1 is the integrally-built figure for indicating ink-jet printing apparatus for the present invention, and Fig. 1 (a) is the side of printing equipment View, Fig. 1 (b) are its top views.

Fig. 2 is the side view in printing treatment portion, side view when Fig. 2 (a) is maintenance, and Fig. 2 (b) is that maintenance unit retreats, The side view for the state that head unit rises, Fig. 2 (c) are head unit decline, and printing prepares the side view for the state being over.

Fig. 3 is the perspective view of head unit, and Fig. 3 (a) is before and after direction arranged in rows is configured with orthogonal direction with deviateing Head module state perspective view, Fig. 3 (b) is to see the head module before and after being overlappingly configured with orthogonal direction in orthogonal direction State perspective view.

Fig. 4 is the schematic top plan view of head unit, and Fig. 4 (a) is to be configured with orthogonal direction with deviateing in direction arranged in rows The schematic top plan view of the state of the head module of front and back, Fig. 4 (b) are before and after orthogonal direction is seen and is overlappingly configured with orthogonal direction Head module state schematic top plan view, Fig. 4 (c) is the schematic top plan view of jagged nozzle rows.

Fig. 5 is the schematic top plan view with the head unit of module mobile mechanism of other way, and Fig. 5 (a) is that have to synchronize The schematic top plan view of the head unit of belt mechanism, Fig. 5 (b) are the shared balls with the screw thread for having set mutual reversion at periphery quarter The schematic top plan view of the head unit of screw rod.

Fig. 6 is the block diagram for indicating the control structure of printing equipment.

Fig. 7 is the explanatory diagram of pattern switching control, and Fig. 7 (a) is to indicate that the dot distribution situation of the first printing mode is shown It is intended to, Fig. 7 (b) is the schematic diagram for indicating the dot distribution situation of the second printing mode, and Fig. 7 (c) is to indicate third printing mode Dot distribution situation schematic diagram.

Fig. 8 is the schematic top plan view of head unit, the schematic top plan view of head unit when Fig. 8 (a) is the first printing mode, figure 8 (b) be the schematic top plan view of the head unit in the case where carrying out single module printing movement.

The explanatory diagram that dot when Fig. 9 is belt diagonal deviates, ink-jet printing apparatus when Fig. 9 (a) is belt diagonal Top view, Fig. 9 (b) are the schematic diagrames of the dot distribution situation of Printing Department when indicating belt diagonal, and Fig. 9 (c) is to indicate centering The schematic diagram of the dot distribution situation of Printing Department after movement.

Figure 10 is the explanatory diagram of centering control, and Figure 10 (a) makes head module move to the left and follow printed medium In the case of head unit schematic top plan view, Figure 10 (b) is the case where so that head module is moved to the right and has been followed printed medium Under head unit schematic top plan view, Figure 10 (c) be the direction substantial middle position arranged in rows of head module and printed medium not The schematic top plan view of head unit under unanimous circumstances.

Figure 11 is the explanatory diagram of module replacing control, and Figure 11 (a) is the head list for indicating the position of each head module before replacement The schematic top plan view of member, Figure 11 (b) are the schematic top plan views for indicating the head unit of position of each head module after replacement.

Figure 12 is the flow chart for indicating printing order, and Figure 12 (a) is the flow chart for indicating whole order, and Figure 12 (b) is table Show that the flow chart of the detailed order of preparatory process, Figure 12 (c) are the flow charts for indicating the detailed order of control process.

Figure 13 is the flow chart for indicating printing Control sequence entirety.

Figure 14 is the flow chart for indicating the order of centering control.

Figure 15 is the flow chart of the order of representation module replacement control.

Figure 16 is the flow chart of the order of intermediate scheme switching control.

Specific embodiment

For the mode to carry out an invention

Hereinafter, one side faces the implementation of the invention in relation to ink-jet printing apparatus and ink jet printing method referring to attached drawing, one Mode is illustrated, for the understanding of the present invention.

In addition, using Fig. 1,2 arrow F shown in direction as front, using direction shown in arrow R as right, with arrow T institute The direction shown is top, position, the direction in each portion described below etc. be position on the basis of this front, right and top, Direction.

Firstly, by Fig. 1 to being applicable in ink-jet printing apparatus of the invention, that is, to the thin slice cake as printed medium The dry overall structure for waiting the printing equipment 1 of discharge edibility ink progress presswork on food 9 is illustrated.In addition, here It has only been applicable in an example of ink-jet printing apparatus of the invention using form, has been not particularly limited in this form.

Printing equipment 1 has the printing treatment that edibility ink print text etc. is discharged on the food 9 as printed medium Portion 2；It sees on the upper surface of belt 10 rotated clockwise with food 9 is positioned in left side and is transported to printing treatment portion 2 The belt transport portion 3 of underface.In addition, in the present embodiment, the rear side of orthogonal direction 20 is the carriage direction of food 9, with this The orthogonal direction arranged in rows 21 of orthogonal direction 20 becomes left and right directions.

Moreover, printing treatment portion 2 therein is in the front and back substantial middle of belt transport portion 3, it is will have the row of foring The head unit 4 of the head 41,42,44,45 of the nozzle of edibility ink out；To the ink of these 41,42,44,45 supply edibility ink Supply unit 5；The printing element 6 of mounting head unit 4, black supply unit 5；Relative to head unit 4, black supply unit 5, it is based on various signals It carries out the supply of edibility ink, by the control for the driving power that edibility ink is discharged and make before being made of the head 41,42 of front and back Side head module 43 and the rear side head module 46 being made of the head 44,45 of front and back are separately in direction 21 arranged in rows movement The control unit 7 of the control of moving electric power etc.；With the maintenance unit 8 for implementing the upkeep operations such as head cleaning to head unit 4 above-mentioned It combines and constitutes.

In addition, in belt transport portion 3, printing treatment portion 2 above-mentioned is rotatably configured in sandwiched therebetweenly before Entrance roller 11 and outlet roller 12 afterwards；It is configured in the first idler roller 13 and second of the front and back of the middle part between two rollers 11,12 Idler roller 16；And it is configured in the idler roller 14 and driven roller 15 of the front and back between two idler rollers 13,16, using axle center as left and right directions It is configured.Belt 10 above-mentioned has been wound on these rollers 11~16, and has been matched in a manner of clipping this belt 10 from left and right Set pair of right and left device frame 25,26, between this device frame 25,26 can front and back rotatably by being pivotally supported roller 11 above-mentioned ~16.

Moreover, on device frame 25,26, be configured near entrance roller 11 pair of right and left entrance alignment guide part 23, 23, alignment guide part 24,24 in pair of right and left outlet is configured near outlet roller 12.

Even if being intended to as a result, from the food 9 that belt 10 transports in entrance 29 and outlet 30 from belt 10 to direction arranged in rows 21 squeeze out, also can be by the entrance alignment guide part 23,23 of left and right and the medial surface of outlet alignment guide part 24,24 towards belt It is pushed back on the inside of 10 direction arranged in rows, inhibits the falling from the direction end arranged in rows of belt 10 of food 9.

In turn, idler roller 14 can be using the axle center 13a of first idler roller 13 in front as center swing by being pivotally supported on Side view triangle tension frame 17 on, the rear end of this tension frame 17 is flexibly led downwards through tensioning spring 18 Draw, it can be by being pressed against in belt 10 below the periphery of driven roller 15 from rear wound on first before the periphery of idler roller 14 Part on behind the periphery of idler roller 13 forms stretching unit 19.

Thereby, it is possible to usually assign defined tension to belt 10, the relaxation of belt 10 can reduce, inhibit skidding etc. It generates, improves the transport precision of belt transport portion 3.

On this basis, the front position close to printing treatment portion 2 belt 10 top, as detection food 9 The position sensor of direction position arranged in rows is provided with camera 27.In turn, in the dress for being comparably front with this camera 27 It sets to be provided with to install on frame 25,26 and can receive and dispatch the sensing of transporting position made of the transmitter 28a and receiver 28b of light, sound wave Device 28.Based on this transporting position sensor 28, by belt 10 be conveyed through Lai food 9 by transmitter 28a and receiver 28b it Between, light, sound wave are interdicted, thereby, it is possible to detect the orthogonal direction position of food 9.

Thereby, it is possible to the orthogonal direction of the food 9 on belt 10, arranged in rows is found out from the image obtained by camera 27 The position in direction can be found out the bias from direction center arranged in rows, be carried out aftermentioned centering control based on the signal System, or keep each head module 43,46 mobile to the specified position in direction arranged in rows, carry out aftermentioned pattern switching control.

Then, by Fig. 3 to Fig. 5, to the structure of the head unit 4 of the various printing controls of the progress of such printing equipment 1 It is illustrated.

As shown in Figure 3, Figure 4, head unit 4 has the pedestal 40 of rectangular plate-like；On this pedestal 40 orthogonal direction 20 simultaneously Head module 43,46 made of row's setting；With the module for moving this head module 43,46 separately in direction 21 arranged in rows Mobile mechanism 47.

Moreover, front side head module 43 is in advance on 41 as previously mentioned, being made of front 41 and back 42, formed to front and back The nozzle rows M of the ink droplet of the nozzle rows Y and discharge magenta of the ink droplet of discharge yellow is formd to front and back on back 42 The nozzle rows K of the nozzle rows C of the ink droplet of cyan and the ink droplet of discharge black is discharged.

Thereby, it is possible to carry out two color printing by a head, colored printing can be carried out by former and later two heads 41,42.In addition, As shown in Fig. 4 (c), the either of which of nozzle rows Y, M, C, K are made of preceding next two columns nozzle rows 49,50, the preceding next two columns spray Mouth column 49,50 alternately respectively configure a nozzle 48 adjacent in direction arranged in rows in orthogonal direction 20, and are formed as so-called Zigzag improve dot density so that the spacing in the direction arranged in rows of assorted nozzle 48 is small.

It as rear side head module 46, is similarly made of, is in advance on 44 front 44 and back 45, form to front and back spray Mouth column M and nozzle rows Y forms to front and back nozzle rows K and nozzle rows C on back 45, can be by former and later two heads 44,45 Carry out colored printing.Moreover, the either of which of nozzle rows Y, M, C, K are made of the nozzle rows 49,50 of preceding next two columns, improve Dot density.

In addition, the either of which of head 41,42,44,45 is that its length direction is orthogonal relative to orthogonal direction 20, nozzle rows Y, M, C, K all along direction 21 arranged in rows configure.

In addition, in the left and right sides of pedestal 40, being extended in orthogonal direction mutually flat in module mobile mechanism 47 Capable pair of right and left support frame members 51,52, herein between the support frame members 51,52 of left and right, in direction arranged in rows Crossbearer three guiding axis 53,54,55 being parallel to each other, any one both ends of this guiding axis 53,54,55 are all fixed branch It holds on support frame members 51,52.

In the left part of guiding axis 53 wherein, it can be slidably externally embedded to sliding bearing 56 in axis direction, on the other hand, The right part of guiding axis 53,54, can be in the axis direction slidably sandwiched sliding bearing 57 between the guiding axis 53,54.Moreover, Between the sliding bearing 56,57 of these left and right, set up the rectangular plate-like as base member front side head pedestal 60, and by its It has carried out connection to fix, on front side of this on head pedestal 60, front and back front 41 above-mentioned and back 42 has uprightly been provided with, before formation Side head module 43.

It equally, can be in the axis direction slidably sandwiched cunning between guiding axis 54,55 in the left part of guiding axis 54,55 On the other hand dynamic bearing 58 in the right part of guiding axis 55, can slidably be externally embedded to sliding bearing 59 in axis direction.Moreover, Also the rear side head pedestal 61 of the rectangular plate-like as base member has been set up between the sliding bearing 58,59 of these left and right, and will It has carried out connection and has fixed, and on rear side of this on head pedestal 61, is uprightly provided with front 44 above-mentioned and back 45 to front and back, is formed Rear side head module 46.

In turn, in the left part of pedestal 40, provided with make sliding bearing 56,57,58,59 support frame members 51,52 it Between the sliding driving portion 62 that is slided along guiding axis 53,54,55 in direction arranged in rows.

It slides in driving portion 62 herein, on pedestal 40, in left compared with support frame members 51, fixes to front and back and set Electric motor 63,64 has been set, has been each extended over to the right from these electric motors 63,64 provided with motor drive shaft 63a, 64a, at its end Taper has linked the left part for the ball screw 65,66 being arranged on each head module 43,46 respectively.

Moreover, the right part of these ball screws 65,66 passes through the sliding that screw thread is inserted in front side head module 43 above-mentioned respectively The sliding bearing 58 of the threaded hole 56a for being formed in direction 21 arranged in rows and rear side head module 46 of bearing 56 is formed in column In the threaded hole 58a of setting direction 21, ball wire rod mechanism 67 is formd.

If driving electric motor 63,64 as a result, motor drive shaft 63s, 64a rotation, ball screw 65,66 is also respectively in spiral shell It is rotated in pit 56a, 58a, by the way that this rotary motion is converted to transporting to the sliding in direction arranged in rows for sliding bearing 56,58 It is dynamic, each head module 43,46 can be made separately mobile in direction arranged in rows together with sliding bearing 56,58.

On this basis, it is concatenated and the sliding bearing 57 that is fixed on front side head pedestal 60 and after being concatenated and being fixed on Sliding bearing 58 on the head pedestal 61 of side, can slidably be installed in guiding axis 53,54,55 above-mentioned in axis direction It is folded on the guiding axis 54 between the head pedestal 60,61 of adjacent 20 front and back of orthogonal direction, the guiding axis 54 is as single Shared guiding axis function.

Accordingly, because with the case where guiding axis as a pair of such as the setting of head pedestal 60,61 front and back after in each of front as, The case where configuring two guiding axis between head pedestal 60,61 is compared, can shorten the front and back of orthogonal direction 20 head pedestal 60,61 it Between distance, so even if as below in detail narration as, food 9 is due to the diagonal of belt 10 gradually to direction arranged in rows 21 sides are transported with deviateing, and the distance between the head module 43,46 of front and back on each head pedestal 60,61 also becomes It is short, the overlapping between the dot formed by front side head module 43 and the dot formed by rear side head module 46 can be made to mitigate.

According to the structure as above, module mobile mechanism 47 can be formed by following simple structure, that is, mounting The multiple pedestals 60,61 of each head module 43,46 are secured, can be existed on guiding axis 53,54,55 through sliding bearing 56~59 Direction 21 arranged in rows slidably configures, and the guiding axis 53,54,55 crossbearer between support frame members 51,52 is being set in column Direction is set, in turn, sliding driving portion can be formed by following simple structure, it is possible to realize the reductions of installation cost, maintenance Property raising, that is, by the rotation of the ball screw 65,66 carried out by electric motor 63,64, make setting each head module 43, Sliding bearing 56~59 on 46 is mobile in direction 21 arranged in rows.

Herein, as previously mentioned, pedestal 40 left part, be configured with electric motor 63,64, ball screw 65,66 Sliding driving portion 62, form drive system configuration section 68, on the other hand, across support frame members 51,52 ground and drive Dynamic system configuration portion 68 in contrary side arranged in rows, configuration have for the black port 70 of each head module 43,46, The supply system for the cable 37,38 that the black pipe 71,73 of 72 supply edibility ink and the discharge for carrying out the ink droplet from nozzle 48 control System path portion 69.

Feed system path portion 69 and drive system configuration section 68 will not interfere as a result, can substantially ensure periphery Space becomes the contact of feed system path portion 69, drive system configuration section 68 in the assembling of head unit 4, when maintenance It is easy, it is possible to realize the significantly raisings of assembling operation, maintainability.

In addition, being illustrated to the other way of the module mobile mechanism 47 of the structure as above.

On the head unit 4A shown in Fig. 5 (a), the module mobile mechanism 47A provided with other way is mobile in this module It is same as module mobile mechanism 47 above-mentioned in mechanism 47A, between the support frame members 51,52 of left and right, arranged in rows Three guiding axis 53,54,55 for being parallel to each other of direction crossbearer, and carried out fixed bearing.

In the left and right part of guiding axis 53,54 wherein, respectively can axis direction be slidably externally embedded to sliding bearing 56, 57, between the sliding bearing 56,57 of these left and right, the front side head pedestal 60 of the upright setting head 41,42 in front and back ground is set up, together Sample can slidably be externally embedded to sliding bearing 58,59 in axis direction respectively, in these left and right in the left and right part of guiding axis 54,55 Sliding bearing 58,59 between also set up front and back ground uprightly be provided with head 44,45 rear side head pedestal 61.

Moreover, the sliding driving portion 62A for sliding these sliding bearings 56,57,58,59 in direction arranged in rows has rolling Ballscrew mechanism 67A in addition to this ball wire rod mechanism 67A, also has following synchronous belt mechanism 39, the ball in turn The ball wire that screw body 67A will link with the motor drive shaft 64a for the single electric motor 64 being arranged on rear side head module 46 Bar 66 is inserted in the sliding axle of the connection of the rear side head module 46 in the head module 43,46 with the preceding next two columns of orthogonal direction by screw thread It holds 58 to be formed in the threaded hole 58a in direction 21 arranged in rows, by making motor drive shaft 64a carry out rotation driving, makes rear side head Module 46 is moved along guiding axis 54,55 in direction 21 arranged in rows together with sliding bearing 58.

In this synchronous belt mechanism 39, near the outside of the support frame members 51,52 by being pivotally supported on left and right Synchronous belt 76 is wound between a pair of of belt pulley 74,75, and rear side has been linked on the belt part 76b towards rear side head module 46 The sliding bearing 58 of head module 46, and linked front side head module 43 on the belt part 76a towards front side head module 43 Sliding bearing 57, thereby, it is possible to make front side head module 43 also follow rear side head module 46 direction arranged in rows 21 movement Ground is mobile to opposite side in direction 21 arranged in rows.

Thereby, it is possible to by following simple structure formed sliding driving portion 62A, it is possible to realize the reduction of installation cost, The raising of maintainability, and also it is possible to realize the further densifications for the head unit 4A for being packed into sliding driving portion 62A, that is, make Rear side head module 46 via electric motor 64 carry out rotation driving ball screw 66 with sliding bearing 58 together arranged in rows Direction 21 is mobile, synchronous belt 76 of the front side head module 43 through linking with this sliding bearing 58 with other sliding bearings 57 together It is mobile in direction 21 arranged in rows

In turn, as driving source, it is provided only on the single electric motor 64 of rear side head module 46, and it is as the aforementioned The preceding next two columns head module 43,46 of orthogonal direction is driven by respective electric motor 63,64 as sliding driving portion 62 Situation is compared, and the reduction of further promote device cost, the densification of head unit 4A are capable of.

On the head unit 4B shown in Fig. 5 (b), the module mobile mechanism 47B provided with other way is mobile in this module It is same as module mobile mechanism 47 above-mentioned, 47A in mechanism 47B, between the support frame members 51,52 of left and right, in column The setting direction crossbearer guiding axis 53,55 being parallel to each other, and fixed bearing has been carried out, but between guiding axis 53,55 It is different from module mobile mechanism 47,47A, substitute guiding axis 54 above-mentioned, the single shared ball screw 77 of crossbearer.

In the left and right part of guiding axis 53 and shared ball screw 77 wherein, can be slidably externally embedded in axis direction respectively Sliding bearing 56,57 has set up front and back ground uprightly provided with before head 41,42 between the sliding bearing 56,57 of these left and right Side head pedestal 60, on the other hand, share ball screw 77 and guiding axis 55 left and right part, respectively can axis direction slidably Be externally embedded to sliding bearing 58,59, between the sliding bearing 58,59 of these left and right, also set up front and back ground uprightly be provided with head 44, 45 rear side head pedestal 61.

Moreover, before the sliding driving portion 62B for sliding these sliding bearings 56,57,58,59 in direction arranged in rows includes The shared ball screw 77 stated, but this share ball screw 77 be folded in adjacent orthogonal direction front and back head pedestal 60, Between 61, and is carved in periphery and set the rotating forward threaded portion 77a being made of the screw thread mutually inverted and reversion threaded portion 77b.

This rotates forward threaded portion 77a and inverts threaded portion 77b passes through the sliding bearing that screw thread is inserted in rear side head pedestal 61 respectively Being formed in for the sliding bearing 57 of the 58 threaded hole 58b for being formed in direction 21 arranged in rows and front side head pedestal 60 is arranged in rows In the threaded hole 57a in direction 21, then, the motor linked with the left end of shared ball screw 77 is made by single electric motor 78 Axis 78a1 carries out rotation driving, makes head module 43,46 and the sliding bearing 56~59 of front and back together mutually to setting in column as a result, Set the opposite Slideslip in direction 21.

Thereby, it is possible to by making the head module 43,46 of front and back through being carried out the shared ball wire of rotation driving by electric motor 78 Bar 77 and simple structure as sliding bearing 56~the 59 together opposite Slideslip mutually to direction 21 arranged in rows are formed Driving portion 62B is slided, the reduction of installation cost, the raising of maintainability are sought, and also it is possible to realize be packed into slide driving portion 62B Head unit 4B further densification.

In turn, because single shared ball screw 77 is only arranged between the head pedestal 60,61 before and after orthogonal direction, Head pedestal 60,61, institute can slidably be configured in direction 21 arranged in rows through sliding bearing 57,58 by being shared on ball screw 77 herein With the distance between the head pedestal 60,61 of front and back that can shorten orthogonal direction, therefore, even if that as described in detail below Sample, food 9 are gradually transported to 21 side of direction arranged in rows with deviateing due to the diagonal of belt 10, are in each head pedestal 60, the distance between the head module 43,46 of front and back on 61 also shortens, can make the dot formed by front side head module 43 and by The overlapping between dot that rear side head module 46 is formed mitigates.

It on this basis, is only that the single electric motor 78 for sharing ball screw 77 is set as driving source, With the head module for the preceding next two columns for making orthogonal direction as sliding driving portion 62 as the aforementioned by respective electric motor 63,64 43, the case where 46 driving, is compared, and is capable of the reduction of further promote device cost, the densification of head unit 4B.

Then, by Fig. 4, Fig. 6 to Figure 11, Figure 13, to operate it is above-mentioned as the head unit 4 of structure equal carry out various prints The control unit 7 of brush control is illustrated.

As shown in fig. 6, in control unit 7, except as receiving touch panel, keyboard etc. data input part 31, open Outside dynamic switch 32, their controller 22 etc. of connection is also accommodated, on this controller 22, being connected to makes driven roller 15 above-mentioned Carry out the drive motor 35 of rotation driving；Make the electric motor 63,64 that head module 43,46 is mobile in direction arranged in rows；And to The power supply 79 that they are supplied electric power, and it is connected to the printing mode input unit 83 and mould being arranged in data input part 31 Block replaces control switch 84；Detect the diagonal sensor 85 of the bias in the direction arranged in rows 21 of belt 10；Photograph above-mentioned The nozzle sensor 86 of the discharge situation of the nozzle 48 of machine 27 and each head module 43,46 of detection.

In turn, on controller 22, it is connected to memory 33 and timer 34, in memory 33 wherein, except storage From data input part 31 above-mentioned input printing density, printing width, print speed printing speed, food thickness outside, use is also stored In various numbers such as the judgement boundary values for carrying out the control of pattern switching shown in Figure 13 80, centering control 81, module replacing control 82 According to, control program；Inclination angular data based on the offset signal from diagonal sensor 85；Based on the image from camera 27 The direction position data arranged in rows of the food 9 of signal；It is different that the presence or absence of signal is generated based on the exception from nozzle sensor 86 The data etc. often generated.Moreover, can be measured each head module 43,46 from beginning to use each head module 43,46 by timer 34 Accumulation afterwards uses the time.

Hereinafter, being described in detail to the various printings control carried out by such control unit 7.

It, can be based on printing condition in the first printing mode, the second printing mode according to pattern switching above-mentioned control 80 And freely switch printing mode between third printing mode.

Under the first printing mode wherein, as shown in Fig. 4 (a), orthogonal direction is made by module mobile mechanism 47 above-mentioned The direction center arranged in rows of front side head module 43 in each head module 43,46 of 20 front and backs is from belt Central Line 96 to setting in column Only mobile width 97 are set on the right side of direction, make the direction center arranged in rows of rear side head module 46 from belt Central Line 96 to setting in column It sets and only moves same widths 97 on the left of direction, two head modules 43,46 are deviateed into width 97 twofold along direction 21 arranged in rows Configuration.

On this basis, if food 9 is transported to up to the lower section of front side head module 43, before this front side head module 43 The ink droplet of edibility ink is discharged the nozzle 48 of back 41,42 on food 9, as shown in Fig. 7 (a), by with belt Central Line 96 be comparably right nozzles 48 carry out printing zone 98 in the past successively front side line of dots arranged in rows portion 87a, 87b, 87c……。

Then, if food is transported to up to the lower section of the rear side head module 46 at rear, before this rear side head module 46 The ink droplet of edibility ink is discharged the nozzle 48 of back 44,45 on food 9, by being comparably left with belt Central Line 96 Successively rear side line of dots arranged in rows portion 88a, 88b, 88c ... in the printing zone 99 that nozzle 48 carries out.

As a result, by by front side line of dots portion 87a, 87b, 87c ... and rear side line of dots portion 88a, 88b, 88c ... Be continuously disposed on the identical column in direction arranged in rows respectively, on food 9 formed Printing Department 100, the Printing Department 100 be One column line of dots 93a, 93b, 93c ... in the direction arranged in rows arranged in rows of orthogonal direction 20 is formed.

The dot quantity in direction 21 arranged in rows becomes front side line of dots portion 87a, 87b, 87c ... and rear side as a result, The dot quantity that line of dots portion 88a, 88b, 88c ... are incorporated respectively, Printing Department 100 can carry out printing as the wide cut of wide cut Brush.For example, in the case where the printing width carried out by each head module 43,46 is respectively 54mm, by entire mentioned nozzle area 101 into Capable printing width becomes 108mm.

In turn, it under this first printing mode, is seen in orthogonal direction, in the adjacent front side head module in direction 21 arranged in rows Between 43 and rear side head module 46, forms the nozzle of the specified quantity of each head module 43,46, is in the present embodiment two sprays The nozzle overlapping region 102 that mouth 48 is overlapped.Moreover, by making head mould of the ink droplet only from the front and back in this nozzle overlapping region 102 One side of block 43,46 is discharged, can be in the dot 104 that the formation of Printing Department 100 is formed by front side head module 43 and by rear side head mould The overlapping printing zone 103 that the dot 105 that block 46 is formed mixes.

Seen as a result, in orthogonal direction, can by the identical column in direction arranged in rows specified quantity, in the present embodiment In between two dots connection front side line of dots portion 87a, 87b, 87c ... and rear side line of dots portion 88a, 88b, 88c ..., Even if seeing in orthogonal direction, the head module 43,46 of front and back mutually leaves in direction 21 arranged in rows because of deformation of head unit 4 etc. Or the inner end in the direction arranged in rows of adjacent head module 43,46 generates spray nozzle clogging, is also able to suppress in front side dot Dot is generated between line portion 87a, 87b, 87c ... and rear side line of dots portion 88a, 88b, 88c ... to omit.

Under the second printing mode, as shown in Fig. 4 (b), make each head module 43,46 to each head mould from module mobile mechanism 47 The identical belt Central Line 96 of direction substantial middle position arranged in rows of block 43,46, two head modules 43,46 are configured to Orthogonal direction sees setting direction substantial middle position overlapping in column.

On this basis, if food 9 is transported to up to the lower section of front side head module 43, before this front side head module 43 The ink droplet of edibility ink is discharged the nozzle 48 of back 41,42 on food 9, as shown in Fig. 7 (b), separates a column in the past, is formed Front side line of dots portion 89.

Then, if food is transported to up to the lower section of the rear side head module 46 at rear, before this rear side head module 46 The ink droplet of edibility ink is discharged the nozzle 48 of back 44,45 on food 9, in the front side line of dots portion 89 formd Rear side line of dots portion 90 is formed in the gap of front and back.

As a result, by the way that front side line of dots portion 89 and rear side line of dots portion 90 are arranged respectively at direction arranged in rows not With column on, print made of the orthogonal direction two column line of dots 94 in direction arranged in rows arranged in rows is formed on food 9 Brush portion 106.

The dot quantity of orthogonal direction 20 becomes and incorporates front side line of dots portion 89 and rear side line of dots portion 90 as a result, Dot quantity can carry out the high speed printing printed with high speed to Printing Department 106.For example, in the discharge of each head module 43,46 In the case that frequency is 10kHz, printing density is 300dpi, the print speed printing speed for the multiple that can carry out the first printing mode is 1.69m/s printing.

It is same as the second printing mode also as shown in Fig. 4 (b) under third printing mode, made by module mobile mechanism 47 Arranged in rows direction substantial middle position identical belt Central Line 96 of each head module 43,46 to each head module 43,46 is obtained, Two head modules 43,46 are configured to see setting direction substantial middle position overlapping in column in orthogonal direction.

On this basis, if food 9 is transported to up to the lower section of front side head module 43, before this front side head module 43 The ink droplet of edibility ink is discharged the nozzle 48 of back 41,42 on food 9, but different from the second printing mode, such as Fig. 7 (c) It is shown, in the past successively it is arranged in rows direction arranged in rows every dot configuration size be the first printing mode above-mentioned, Front side line of dots portion 91 made of the dot 104a of the half of the dot 104 of second printing mode.

Then, if food is transported to up to the lower section of the rear side head module 46 at rear, before this rear side head module 46 The ink droplet of edibility ink is discharged the nozzle 48 of back 44,45 on food 9, in the past successively rear side line of dots arranged in rows portion 92, which is in the front side line of dots portion 91 formed, in the adjacent dot 104a in direction arranged in rows Between configuration size be that the dot 105a of half of dot 105 of the first printing mode above-mentioned, the second printing mode is formed.

As a result, by the way that the dot 105a of the dot 104a in front side line of dots portion 91 and rear side line of dots portion 92 are handed over respectively It alternately configures on the identical column in direction arranged in rows, is formed on food 9 by a column line of dots 95 in direction arranged in rows With the dot density higher than the first printing mode, the second printing mode in orthogonal direction it is arranged in rows made of Printing Department 107.

The dot quantity in direction 21 arranged in rows becomes the multiple of the first printing mode, the second printing mode as a result, can be into The high high density printing of the printing density of row Printing Department 107.For example, in the nozzle for making front side head module 43 and rear side head module 46 42.5 μm of direction positional shift arranged in rows of 48 can in the case where keeping the diameter of dot 104a, 104b 42.5 μm same Carry out the printing for being 600dpi for the printing density of the multiple of the first printing mode, the second printing mode.

As described above, only by following simple control structure, that is, based on being pre-selected by printing mode input unit 83 Printing mode signal, change front side line of dots portion 87a, 87b, 87c ..., 89,91 and rear side line of dots portion 89a, 89b, The size of the allocation position of 89c ..., 90,92, the dot 104 of each line of dots, 104a, 105,105a, it will be able to freely into Row wide cut printing above-mentioned, high speed printing, high density printing, being capable of simplified control unit 7, the head mould that switches for printing mode The driving structure etc. of block 43,46 seeks the reduction of installation cost, the raising of maintainability.

In addition, under the first printing mode above-mentioned, the food 9 as printed medium 128 ratio of width by front side head The width for the printing zone 98 that module 43 carries out, the printing zone 99 carried out by rear side head module 46 width at least one party it is narrow In the case where, the first printing mode is released, moreover, making front side head module 43, having compared with food 9 in rear side head module 46 The head module of the wide printing zone of the width position whole in the width 128 that direction arranged in rows is moved to printable food 9.

For example, as shown in figure 8, front side head module 43 is made to be moved to position from position 108 to the left such as arrow 110 109, so that the width 128 of food 9 is comprised in the printing zone 98 of front side head module 43.At this point, in advance stop ink droplet from The discharge of not used rear side head module 46.

Thereby, it is possible to carry out without using the inner end in the direction arranged in rows of adjacent head module 43,46 but before use The single module printing movement that the inside in the direction arranged in rows of side head module 43 is printed, even if in adjacent head module The inner end in direction arranged in rows generates spray nozzle clogging, is also able to suppress and generates dot omission in Printing Department.

In addition, as shown in Fig. 9 (a), if being filled in the entrance roller 11 of front and back winding and back(-)up belt 10, outlet roller 12 because printing Set that 1 assembly error, the flatness on the ground of setting place are bad etc. and tilt, then belt 10 is relative to first 41,42,44,45 Length direction it is orthogonal do not move, but obliquely move, generate so-called " diagonal of belt " to direction arranged in rows.At this In embodiment, outlet roller 12 is configured to its axle center 12a as direction arranged in rows, but because the axle center 11a of entrance roller 11 exists Rear ramp tilts to the right on generally horizontal plane, so belt 10 is advanced to orthogonal direction 20, and on the left of direction arranged in rows Inclination.

Then, food 9 gradually offsets to the side to a direction left side arranged in rows under first 41,42,44,45 and is transported, and generates Dot offset, color shift, especially under third printing mode above-mentioned, as shown in Fig. 7 (c), because of front side line of dots portion 91 It is alternately configured on the identical column in direction arranged in rows with each dot in rear side line of dots portion 92, so generating to setting in column The influence for setting " diagonal of belt " of the offset in direction is big.

For example, ink droplet is discharged from the nozzle 116 of the front of front side head module 43 41 and generates as shown in Fig. 9 (a) (b) Dot 104a, during being moved through until nozzle 117 of the front of rear side head module 46 44 until transports distance 114, from Direction position 118 arranged in rows originally be moved to be discharged ink droplet with from this nozzle 117 and the dot 105a that generates it is Chong Die at Column setting direction position 119.

Therefore, as shown in Fig. 9 (a), from diagonal sensor 85 above-mentioned detect belt 10 to the rear side of orthogonal direction 20 only before Into the offset 112 to the left when transporting distance 111, the inclination angle G that finds out belt 10 is tilted on this basis with this Based on the G of angle, the offset 115 for being moved through the dot 104a during transporting distance 114 is calculated.In addition, being sensed as diagonal Device 85 has following sensor, but is not specially limited, which is in the direction side arranged in rows of belt 10, just Multiple optical sensors of the predetermined portion setting in direction 20 are handed over, thus optical sensor detection belt 10 is opposite to arranged in rows The offset width in direction.

Based on this offset 115, as shown in Fig. 9 (c), can calculate front side head module 43 nozzle 116 at The nozzle 117 of amount of movement 115a and rear side head module 46 on the right side of column setting direction to the amount of movement on the left of direction arranged in rows 115b, so that each head module 43,46 leaves each other and only moves the amount of two amount of movement 115a, 115b in direction 21 arranged in rows, The diagonal reply of the overlapping of the dot 104a generated by nozzle 116 and the dot 105a generated by nozzle 117 is inhibited to act. In addition, briefly, this offset 115 can also be regularly measured by test pattern printing, based on this, to each head mould Block 43,46 is micro-adjusted to the amount of movement in direction 21 arranged in rows.

Thereby, it is possible to make the difference of head module 43,46 of front and back based on the shifted signal from diagonal sensor 85 automatically It is mobile in direction 21 arranged in rows, mitigate the overlapping of the dot between front side line of dots portion 91 and rear side line of dots portion 92, i.e., It offsets to the side food 9 gradually to a direction left side arranged in rows because of the diagonal of belt 10 to be transported, also be able to suppress big The generation of dot offset, can be such that press quality greatly improves.

In addition, seen as shown in Figure 10 (c) in orthogonal direction, food 9 direction substantial middle position 121 arranged in rows, 122 and head module 43,46 direction substantial middle position 120 arranged in rows it is inconsistent in the case where, Printing Department 36 is from food 9 Direction substantial middle position 121,122 arranged in rows is offset by.

Therefore, by centering above-mentioned control 81, based on the food 9 detected by the camera 27 as position sensor at Column setting direction position 121,122 carries out making each head module 43,46 in direction arranged in rows movement to middle movement, so as to position It is all consistent to set 120,121,122.

For example, if making head module 43,46 only move offset 123 to direction left side arranged in rows, such as Figure 10 (a) institute Show, the direction substantial middle position 121 arranged in rows of food 9 and the direction substantial middle position arranged in rows of head module 43,46 120 is substantially uniform, equally, if head module 43,46 is made only to move offset 124 to direction right side arranged in rows, such as Figure 10 (b) It is shown, the direction substantially central portion 122 arranged in rows of food 9 and the direction substantially central portion 120 arranged in rows of head module 43,46 It is substantially uniform.

As a result, by making 43,46 points of head module of front and back based on the direction position signal arranged in rows from camera 27 It is automatically not mobile in direction 21 arranged in rows, and so that each head module 43,46 is followed food 9 so as to usually become food 9 at Column setting direction substantially central portion 120, Printing Department 36 will not deviate to direction arranged in rows, press quality can be made substantially to mention It is high.

In addition, as shown in figure 11, by module replacing above-mentioned control 82, carrying out based on the nozzle from nozzle sensor 86 It is abnormal it is abnormal generate the first service action that signal is acted and based on each head module 43,46 using after starting when passing through Between at least one party of the second service action that is acted of signal.

For example, generating signal based on abnormal, the front side head module 43 in use is automatic in the first service action wherein Ground on the left of direction arranged in rows from using position 125a to be moved to position of readiness 125b, it is on the other hand, normal in standby Rear side head module 46 is automatically moved to direction right side arranged in rows from position of readiness 126a using position 126b.

In the second service action, based on by time signal, front side head mould in use same as the first service action Block 43 is automatically to direction left side arranged in rows from using position 125a to be moved to position of readiness 125b, on the other hand, standby The rear side head module 46 that middle maintenance care is over automatically is moved to use to direction right side arranged in rows from position of readiness 126a Position 126b.

Thereby, it is possible to quickly respond to the failures such as the spray nozzle clogging in presswork by the first service action, make printing The operating efficiency of industry improves significantly, and multiple head modules can be regularly replaced by the second service action, inhibits ink because not making It is placed with long-time and dries out and generate spray nozzle clogging.

As described above, because head unit 4 have head module 43,46, the head module 43,46 be by with food The orthogonal width direction of the 9 carriage direction nozzle 48 arranged in rows that ink droplet is discharged to the food 9 as printed medium First 41,42,44,45 are arranged side by side in carriage direction and form, that is, head module 43,46 is by the spray of discharge ink droplet arranged in rows The head 41,42,44,45 of mouth 48 orthogonal direction 20 be arranged side by side form, so can will be formed specific line of dots portion 87, 88, head 41,42,44,45 required for 89,90,91,92 be intensively configured to as defined in head module 43,46, therefore, only pass through Adjust the direction position arranged in rows of this head module 43,46, it will be able to be easy the line of dots portion 87 of change in simple structure, 88, 89,90,91,92 forming position, can be with the switching of low cost reply printing mode.

Moreover, making the arbitrary head module in multiple head modules 43,46 independently of other head moulds because head unit 4 has Block in the mobile module mobile mechanism 47 in direction arranged in rows, 47A, 47B, so can make to be formed specific line of dots portion 87, 88, head 41,42,44,45 required for 89,90,91,92 is mobile in direction 21 arranged in rows according to each head module 43,46, because This, further can fine change the forming position in line of dots portion 87,88,89,90,91,92, cope with various Printing mode.

Therefore, by have with such head module 43,46 and module mobile mechanism 47,47A, 47B head unit 4, 4A, 4B, printed with wide cut, high speed printing, high density printing etc. each printing mode printed when, it is no longer necessary to by head unit 4,4A, 4B integral replacing be the dedicated head unit of each printing mode, can using head unit type irreducible minimum, make zero Part cost, the management cost of part, the either of which of inventory cost are greatly reduced.Moreover, will by orthogonal direction 20 from Each dot 104a, 105a that the front side head module 43 and rear side head module 46 for opening greatly generate alternately are configured in side arranged in rows To identical column on carry out high density printing when, even if in printed medium gradually to side arranged in rows due to the diagonal of belt 10 In the case where being transported with offseting to one side, as previously mentioned, only by adjusting the direction arranged in rows of each head module 43,46 Position, it will be able to make the dot 104a formed by front side head module 43 between the dot 105a that is formed by rear side head module 46 Overlapping mitigates, and is able to suppress the generation of big dot offset, greatly improves press quality.

In turn, the pattern switching switched between multiple printing modes is controlled because having and being executed based on printing condition 80；The direction substantial middle position arranged in rows 121,122 for following food 9 carries out the direction arranged in rows shifting of head module 43,46 Dynamic centering control 81；Arbitrarily replace the control of at least one of module replacing control 82 of the head module 43,46 used Unit 7 processed, so each head module 43,46 automatically moves to be best suited for each printing mode in pattern switching control 80 Direction position arranged in rows, in middle control 81, each head module 43,46 automatically moves to the side arranged in rows of each food 9 Front side head module to the direction position arranged in rows of substantial middle position 121,122, in module replacing control 82, in use 43 and it is standby in rear side head module 46 replaced with correspondingly being automatically moved with the situation of nozzle 48, using the time, can Presswork is promptly carried out, operating efficiency, press quality can be made to significantly improve.

Then, by Fig. 2, Fig. 6, Figure 12 to Figure 16, to the print by having head unit 4 as described above, control unit 7 etc. The printing process and its printing control that brush device 1 carries out are illustrated.

As printing process, as a whole, as shown in Figure 12 (a), have preparatory process P1 and control process P2, described In preparatory process P1, in head unit 4, provided with will orthogonal with the carriage direction of food 9 width direction is arranged in rows will Head module 43,46 made of the head 41,42,44,45 for the nozzle 48 that ink droplet is discharged to food 9 is arranged side by side in carriage direction, it is quasi- The standby arbitrary head module that can make in head module 43,46 head unit 4 mobile in width direction independently of other head modules, this Afterwards, in the control process P2, printing condition control is based on by control unit 7 and cut between multiple printing modes The pattern switching control 80 changed, follow food 9 width direction substantial middle position carry out the width direction of head module 43,46 At least one of mobile centering control 81 and the module replacing control 82 for arbitrarily replacing the head module 43,46 used.

Preparatory process P1 therein as shown in Figure 12 (b), has the first preparatory process P11 of first half with after in turn Second preparatory process P12 of half part, in the first preparatory process P11 of the first half, by will be in the fortune with food 9 The head 41,42,44,45 of the width direction for the sending direction orthogonal nozzle 48 arranged in rows that ink droplet is discharged to food 9 is aforementioned Carriage direction is arranged side by side, and forms head module 43,46 and is moved in the second preparatory process P12 of the latter half by module Mechanism 47 keeps the arbitrary head module in multiple head modules 43,46 mobile in width direction independently of other head modules.

According to the first preparatory process P11, as previously mentioned, can be with the switching of low cost reply printing mode.That is, because energy Head 41,42,44,45 required for specific line of dots portion will enough be formed and be intensively configured to defined head module 43,46, so Only by adjusting the width position of this head module 43,46, it will be able to be easy to change the shape in line of dots portion in simple structure At position.

According to the second preparatory process P12, as previously mentioned, coping with various printing modes.That is, because can make It is mobile in width direction according to each head module 43,46 to form head 41,42,44,45 required for specific line of dots portion, so It further can imperceptibly change the forming position in line of dots portion.

In turn, by having control process P2, presswork can be promptly carried out, operating efficiency, printed matter can be made Matter significantly improves.That is, as previously mentioned, each head module 43,46 is automatically moved to be best suited for respectively by pattern switching control 80 The width position of printing mode, the width direction that each head module is automatically moved to each food 9 by centering control 81 are big Central location is caused, the head mould in use is correspondingly automatically moved by the situation of module replacing control 82 and nozzle 48, using the time Block and it is standby in head module replaced.

In addition, having the first control process P21, the second control process P22 and third control process as control process P2 P23, in the first control process P21, for example, for pattern switching control 80, as previously mentioned, defeated by printing mode Enter device 83 and inputs the applicable printing mode of selection from the first printing mode, the second printing mode and third printing mode, In first printing mode, head module 43,46 is configured in width direction offset, it will be by the front side in front of carriage direction The front side line of dots portion for the dot arrangement that the ink droplet of head module 43 is formed and by the rear side head module 46 from carriage direction rear The rear side line of dots portion of dot arrangement that is formed of ink droplet be continuously disposed on the identical column of width direction, formed as a result, wide A column line of dots in direction is spent, it is arranged in rows in carriage direction, in second printing mode, by module mobile mechanism 47 Each head module 43,46 is configured to see that width direction substantial middle position is overlapped in carriage direction, by front side line of dots portion with after Side line of dots portion configures on different column, as a result, with the dot density formation width side roughly the same with the first printing mode To two column line of dots, it is arranged in rows in carriage direction, will be each by module mobile mechanism 47 in the third printing mode Head module 43,46 is configured to see that width direction substantial middle position is overlapped in carriage direction, by front side line of dots portion and rear side circle Each dot in dotted line portion alternately configures on the identical column of width direction, as a result, than the first printing mode, the second printing The one column line of dots in the high dot density formation width direction of mode, it is arranged in rows in carriage direction, in second control In process P22,80 are controlled by the pattern switching of control unit 7, based on the printing mode that selects in the first control process P21, The width position of each head module 43,46 and the discharge condition of ink droplet are set, in third control process P23, from the beginning The nozzle 48 of each head module 43,46 of unit 4 is to passing through the head unit 4 with head module 43,46 and module mobile mechanism 47 Ink droplet is discharged on food 9 to be printed.

By having the first control process P21, based on the printing mode signal from printing mode input unit 83, Under one printing mode, by the way that front side line of dots portion and rear side line of dots portion are continuously disposed on the identical column of width direction, The dot quantity of width direction becomes the dot quantity for incorporating front side line of dots portion and rear side line of dots portion, can carry out wide cut Printing, under the second printing mode, by configuring in front side line of dots portion and rear side line of dots portion in the different of width direction On column, can carry out carriage direction dot quantity become the first printing mode multiple high speed printing, in third printing mode Under, by the way that each dot in front side line of dots portion and rear side line of dots portion is alternately configured on the identical column of width direction, The high density for the multiple that the dot quantity that can carry out width direction becomes the first printing mode, the second printing mode is printed.

In turn, by having the second control process P22, it is possible to realize the reductions of installation cost, the raising of maintainability.That is, Each head module 43,46 can be based on being automatically moved to by the pre-selected printing mode signal of printing mode input unit 83 It is best suited for the width position of each printing mode, freely progress wide cut printing, high speed printing, high density printing, it can Simplified control unit, the driving structure of head module 43,46 switched for printing mode etc..

On this basis, process P23 is controlled by having third, the printing of low cost, high-quality can be carried out.That is, printing In operation, head unit 4 itself because maintain fixedly by the discharge destination that the printing surface of food 9 is moved to ink droplet come into Row printing, so not needing compared with food 9 fixedly to be made to the case where movement of head unit 4 is to be printed for head unit Mobile large-scale device, installation cost are reduced, and press quality also improves.Moreover, can be to 9 printing word of food etc..That is, energy Enough from nozzle 48, discharge ink droplet forms the line of dots of column-shaped on the food 9 in carriage direction movement, so that this line of dots is in column It is arranged in width direction, defined text etc. is printed on food 9.

In addition, being illustrated to the detailed Control sequence of such control process P2.

As Control sequence, as shown in figure 13, first from data input part 31, except applicable printing mode above-mentioned with Outside, it also inputs printing density, printing width, print speed printing speed, the thickness of food, size, control 80, centering control with pattern switching 81, module replacing controls 82 relevant various data (step S1).It as module replacing control 82, is opened through module replacing control Close whether 84 inputs need the first service action, the second service action.This step S1 is carried out in first step P1 above-mentioned.

Hereafter, if making to start switch 32 connections (step S2), such as shown in Fig. 2 (a) (b), so far, in order to tie up Shield, below the head unit 4 that covers of maintained unit 8 rise, left from maintenance unit 8, hereafter, maintenance unit 8 is also rearward It is mobile.Moreover, head unit 4 drops to defined position, height as shown in Fig. 2 (c), printing prepares to be over.

Moreover, during the decline of this head unit 4, by the way that data input part 31, diagonal sensor 85, photograph will be come from The data-signal of machine 27, nozzle sensor 86 etc. reads in controller 22 (step S3), based on the data-signal being read into, head unit The electric motor 63,64 of 4 step motor type is driven, and each head module 43,46 is moved to defined direction arranged in rows Position carries out various controls 80,81,82.

In detail, after having carried out to middle control 81 (step S4), (step in the case where the head module used is single Rapid S5: yes), module replacing control 82 is carried out, in the case where the head module used is multiple (step S5: no), carries out mode Switching control 80 (step S7).This step S4~S7 is carried out in the second step P2 above-mentioned.

In addition, hereinafter, being illustrated to the detailed order of each control 80,81,82.

In step S4 in middle control 81, as shown in figure 14, it is stored the first control of centering in the memory 33 Processing procedure sequence, with the direction position data arranged in rows of the food 9 generated by camera 27, Printing Department 36 slave food 9 in column Tolerance limit limitation (hereinafter referred to as " lower limit offset ") XL of the offset of setting direction substantial middle position etc. is read into control together Device 22 (step S21) processed, hereafter, the electric motor 63,64 of each head module 43,46 are driven according to the first control program (step S22).

Then, turn by camera 27 according to the direction position arranged in rows of detection food 9 and according to electric motor 63,64 The direction position (step S23) arranged in rows of speed detection head module 43,46, finds out the direction substantial middle arranged in rows of head module The offset X of the direction substantial middle position arranged in rows 121,122 of position 120 and food 9, by this offset X with it is defined Lower limit offset X L is compared (step S24).

If offset X (step S24: yes) more than lower limit offset X L, after driving electric motor 63,64 again (step S22), step S22, S23, S24 is repeated multiple times, until offset X becomes insufficient lower limit offset X L.If offset X Insufficient lower limit offset X L (step S24: no) then unchangeably stops the driving (step S25) of electric motor 63,64 like this, Terminate centering control 81.

In the module replacing control 82 of step S6, as shown in figure 15, the module replacing being stored in the memory 33 is used Second control program, have the data of generation without exception with the nozzle 48 detected by nozzle sensor 86, measured by timer 34 The accumulation of each head module 43,46 dry out because of long-time service using time T, nozzle 48 and be easy to produce the accumulation of spray nozzle clogging etc. Time (hereinafter referred to as " upper limit accumulated time ") TU etc. is read into controller 22 (step S31) together.

If nozzle 48 generates exception (step S32: yes), the first service action above-mentioned is carried out according to the second control program The accumulation of head module in using is used time T if nozzle 48 does not generate exception (step S32: no) by (step S35) (step S33) is compared with upper limit accumulated time TU.

If accumulation use time T (step S33: yes) more than upper limit accumulated time TU, according to second control program into Row the second service action (step S34) above-mentioned, then ending module replacement control, if accumulation is tired using the time T deficiency upper limit Product time TU (step S33: no), then unchangeably ending module replacement control 82 like this.

In the pattern switching control 80 of step S7, as shown in figure 16, the pattern switching being stored in the memory 33 is used Third control program, with the width W of the printing mode, food 9 that are inputted from data input part 31, by each head module 43,46 into The inclination angle of capable printing width WP, the inclination angular data detected by diagonal sensor 85, the tolerance limit of the diagonal of belt 10 (hereinafter referred to as " upper limit inclination angle ") GU etc. is read into controller 22 (step S41) together.

In the case where the printing mode being entered is the first printing mode (step S42: yes), if the width W of food 9 exists Any one printing width WP or less (step S45: yes) of head module 43,46 then carries out single mould according to third control program Bar printing acts (step S46), if width W is more than printing width WP (step S45: no), controls program according to third, carries out The printing (step S48) carried out by the first printing mode.

The case where the printing mode being entered is not the first printing mode (step S42: no) but the second printing mode Under (step S43: yes), (step S49) is printed with the second printing mode according to third control program, in the printing being entered Mode is not that the first printing mode (step S42: no) is also not in the case where the second printing mode (step S43: no), by belt 10 inclination angle G is compared (step S44) with upper limit inclination angle GU.

Moreover, being carried out according to third control program oblique if inclination angle G (step S44: yes) more than the GU of upper limit inclination angle Row reply acts (step S47), is then printed (step S50) with third printing mode, if the inclination angle G deficiency upper limit tilts Angle GU (step S44: no) is then unchangeably printed (step according to third control program like this with third printing mode S50)。

As described above, being applicable in ink-jet printing apparatus and ink jet printing method of the invention, becoming can be answered with low cost To various printing modes, moreover, even if the diagonal etc. relative to printed medium can also ensure that high press quality Ink-jet printing apparatus and ink jet printing method.

The explanation of symbol

1: printing equipment (ink-jet printing apparatus)；4,4A, 4B: head unit；7: control unit；9: food (printed medium)； 10: belt (transports component)；20: orthogonal direction；21: direction arranged in rows；27: camera (position sensor)；37: cable； 39: synchronous belt mechanism；41,42,44,45: head；43,46: head module；47,47A, 47B: module mobile mechanism；48: nozzle； 51,52: support frame members；53,54,55: guiding axis；54: guiding axis (shared guiding axis)；56,57,58,59: sliding axle It holds；56a, 57a, 58a, 58b: threaded hole；60: front side head pedestal (base member)；61: rear side head pedestal (base member)；62, 62A, 62B: sliding driving portion；63,64: electric motor；63a, 64a: motor drive shaft；65,66: ball screw；67,67A: ball wire Linkage；68: drive system configuration section；69: feed system path portion；71: Mo Guan；74,75: belt pulley；76: synchronous belt； 76a, 76b: belt part；77: sharing ball screw；77a: threaded portion is rotated forward；77b: reversion threaded portion；78: electric motor； 78a: motor drive shaft；80: pattern switching control；81: centering control；82: module replacing control；83: printing mode input unit； 85: diagonal sensor；86: nozzle sensor；87a, 87b, 87c, 89,91: front side line of dots portion；88a, 88b, 88c, 90,92: Rear side line of dots portion；93a, 93b, 93c, 94,95: line of dots；98,99: printing zone；102: nozzle overlapping region；104, 104a, 105,105a: dot；112: the offset in direction arranged in rows；120,121,122: direction substantial middle arranged in rows Position；128: the width (width of printed medium) of food；G: inclination angle；P1: preparatory process；P11: the first preparatory process； P12: the second preparatory process；P2: control process；P21: the first control process；P22: the second control process；P23: third controls work Sequence.

Claims

1. a kind of ink-jet printing apparatus, wherein

Having head unit, the head unit has head module and module mobile mechanism,

The head module be by the head of the nozzle of discharge ink droplet arranged in rows with the direction arranged in rows of former nozzle substantially Orthogonal orthogonal direction is arranged side by side and forms,

The module mobile mechanism make the arbitrary head module in multiple head modules independently of other head modules it is aforementioned at Column setting direction is mobile.

2. ink-jet printing apparatus as described in claim 1, wherein

Has a control unit, in the switching control of described control unit execution pattern, centering control and module replacing control at least One,

Pattern switching control is switched over based on printing condition between multiple printing modes；

The centering controls the direction substantial middle position arranged in rows for following the printed medium that aforementioned black liquid is discharged, and carries out head mould The movement in direction arranged in rows of block；

The head module used is arbitrarily replaced in module replacing control.

3. ink-jet printing apparatus as claimed in claim 2, wherein

Have the printing mode input unit of the applicable printing mode of selection, also,

When carrying out previous mode switching control, the first printing mode of switching, the second printing mode and third printing mode,

In first printing mode, aforementioned orthogonal direction is configured with deviateing in direction arranged in rows by module mobile mechanism Each head module of front and back, the front side dot for the dot arrangement that the ink droplet of the front side head module of origin Subnormal subgroup direction side is formed The rear side line of dots portion for the dot arrangement that the ink droplet of the rear side head module in line portion and the origin Subnormal subgroup direction other side is formed is continuous It is arranged on the identical column in direction arranged in rows, the line of dots of a column in direction arranged in rows is formed as a result, in orthogonal side To arranged in rows,

In second printing mode, aforementioned each head module is configured to see setting in column by module mobile mechanism in orthogonal direction Set direction substantial middle position overlapping, by aforementioned front side line of dots portion and rear side line of dots portion configuration direction arranged in rows not On same column, the two column line of dots in direction arranged in rows are formed with the dot density roughly the same with the first printing mode as a result, It is arranged in rows in orthogonal direction,

In the third printing mode, aforementioned each head module is configured to see setting in column by module mobile mechanism in orthogonal direction Set direction substantial middle position overlapping, alternately configured on the identical column in direction arranged in rows aforementioned front side line of dots portion and Each dot in rear side line of dots portion is set with the dot density formation higher than the first printing mode, the second printing mode in column as a result, A column line of dots in direction is set, it is arranged in rows in orthogonal direction.

4. ink-jet printing apparatus as claimed in claim 3, wherein

Under aforementioned first printing mode,

It is seen in aforementioned orthogonal direction, forms the specified quantity of each head module between adjacent front side head module and rear side head module Nozzle overlapping nozzle overlapping region, make ink droplet only from one side of head module of the front and back in the nozzle overlapping region be discharged.

5. ink-jet printing apparatus as claimed in claim 3, wherein

Under aforementioned first printing mode,

What if the width of aforementioned printed medium was carried out than the width of the printing zone carried out by front side head module, by rear side head module At least one party of the width of printing zone is narrow, then releases aforementioned first printing mode, and makes to have wider than aforementioned printed medium The head module for spending wide printing zone is moved to the position that can print the entire width of aforementioned printed medium in direction arranged in rows, The single module printing movement printed by single head module is carried out as a result,.

6. ink-jet printing apparatus as claimed in claim 3, wherein

The diagonal for having the bias in the direction arranged in rows for detecting the transport component that aforementioned printed medium is transported to head unit Sensor, also,

Under aforementioned third printing mode,

Based on the inclination angle of the transport component found out from the bias detected by aforementioned diagonal sensor, carry out that each head module is made to exist Direction arranged in rows leaves each other mobile diagonal reply movement, alternately to match on the identical column in direction arranged in rows Set each dot in aforementioned front side line of dots portion and rear side line of dots portion.

7. ink-jet printing apparatus as claimed in claim 2, wherein

Have the position sensor for the direction position arranged in rows for detecting aforementioned printed medium, also,

When being controlled in carrying out aforementioned pair,

Based on the direction position arranged in rows detected by aforementioned location sensor, carry out moving each head module in direction arranged in rows Dynamic centering movement, to see that the direction substantial middle position arranged in rows of printed medium and head module is big in aforementioned orthogonal direction It causes consistent.

8. ink-jet printing apparatus as claimed in claim 2, wherein

Have the nozzle sensor of the discharge situation for the nozzle for detecting aforementioned head module, also,

When carrying out aforementioned modules replacement control, at least one party of the first service action and the second service action is carried out,

First service action generates signal based on the abnormal of the nozzle from former nozzle sensor, will produce different Normal head module is changed to the head module in standby,

Second service action, using the process time signal after starting, is made based on each head module in each defined accumulation With the time, the head module head module in using being changed in standby.

9. ink-jet printing apparatus according to any one of claims 1 to 8, wherein

Aforementioned modules mobile mechanism has

Multiple base members of fixed aforementioned each head module；

Multiple guiding axis by crossbearer in the aforementioned direction arranged in rows of multiple base member；

A pair of of support frame members at the both ends of the fixed bearing guiding axis；

It can be slidably installed on aforementioned guiding axis in axis direction, and link the sliding axle of fixed said base component It holds；With

The sliding driving portion for sliding the sliding bearing along guiding axis in direction arranged in rows between aforementioned support frame members.

10. ink-jet printing apparatus as claimed in claim 9, wherein

Aforementioned guiding axis includes single shared guiding axis,

Between the said base component for the front and back that the single shared guiding axis is folded in adjacent orthogonal direction, and use In can slidably install each sliding bearing for being concatenated and being fixed on two base member in axis direction.

11. ink-jet printing apparatus as claimed in claim 9, wherein

Aforementioned sliding driving portion has ball wire rod mechanism,

The ball wire that the ball wire rod mechanism links the motor drive shaft for the electric motor stated in each of front on head module with setting Bar is inserted in by screw thread and is formed in the threaded hole in direction arranged in rows with the sliding bearing of aforementioned each head module connection, is passed through So that the motor drive shaft is carried out rotation driving, slides each head module together with aforementioned sliding bearing in direction arranged in rows.

12. ink-jet printing apparatus as claimed in claim 9, wherein

Aforementioned sliding driving portion has ball wire rod mechanism and synchronous belt mechanism,

The ball wire rod mechanism will link with the motor drive shaft of the single electric motor on the head module that aforementioned one side is arranged in Ball screw be inserted in by screw thread the aforementioned one side in the preceding next two columns head module with aforementioned orthogonal direction head module connection Sliding bearing be formed in the threaded hole in direction arranged in rows, by making the motor drive shaft carry out rotation driving, make a side's Head module is moved along guiding axis in direction arranged in rows together with aforementioned sliding bearing,

The synchronous belt mechanism is by synchronous belt wound on a pair of of belt by being pivotally supported near aforementioned support frame members Between wheel, link the sliding bearing of the head module of a side in the belt part of the head module towards aforementioned one side, and Link the sliding bearing of the head module of the another party in the belt part of head module towards another party, makes another party's as a result, Head module also follow the head module of aforementioned one side in direction arranged in rows movably to the opposite sidesway in direction arranged in rows It is dynamic.

13. ink-jet printing apparatus according to any one of claims 1 to 8, wherein

Aforementioned modules mobile mechanism has

Multiple base members of the fixed aforementioned each head module of mounting；

Multiple guiding axis before and after the orthogonal direction of multiple base member by crossbearer in direction arranged in rows；

The support frame members at the both ends of the fixed bearing guiding axis；

Slide driving portion, it is described sliding driving portion include be folded in the front and back of adjacent orthogonal direction said base component it Between, and the rotating forward threaded portion being made of the screw thread mutually inverted and reversion threaded portion are carved to the single shared rolling for being located at periphery Aforementioned rotating forward threaded portion and reversion threaded portion are passed through each sliding bearing that screw thread is inserted in aforementioned two base member by ballscrew respectively Be formed in the threaded hole in direction arranged in rows, then, by electric motor make and one end of aforementioned shared ball screw link Motor drive shaft carry out rotation driving, make each head module together with aforementioned sliding bearing mutually to the phase in direction arranged in rows as a result, It tosses about sliding.

14. ink-jet printing apparatus as claimed in claim 9, wherein

Aforementioned head unit controls the discharge that there is the ink to aforementioned each head module supply ink to manage and carry out the ink droplet from nozzle Cable feed system path portion direction arranged in rows configure across aforementioned support frame members be provided with it is aforementioned The opposite side of the drive system configuration section of electric motor.

15. ink-jet printing apparatus as described in claim 1, wherein

Aforementioned head module is by the two head module compositions arranged side by side in aforementioned orthogonal direction.

16. a kind of ink-jet printing apparatus, wherein

Having head unit, the head unit has head module and module mobile mechanism,

The head module is will be arranged in rows to the printed medium in the width direction orthogonal with the carriage direction of printed medium The head that the nozzle of ink droplet is discharged is arranged side by side in aforementioned carriage direction to be formed,

The module mobile mechanism makes the arbitrary head module in multiple head modules independently of other head modules in aforementioned width It is mobile to spend direction.

17. a kind of ink jet printing method, wherein have the first preparatory process and the second preparatory process,

In first preparatory process, by will be arranged in rows in the width direction orthogonal with the carriage direction of printed medium It is arranged side by side to the head of the nozzle of printed medium discharge ink droplet in aforementioned carriage direction, forms head module,

In second preparatory process, make the arbitrary head module in multiple head modules independently of other by module mobile mechanism Head module it is mobile in width direction.

18. a kind of ink jet printing method, wherein have preparatory process and control process,

In the preparation process, setting is multiple will be arranged in rows in the width direction orthogonal with the carriage direction of printed medium Head module made of being arranged side by side to the head of the nozzle of printed medium discharge ink droplet in carriage direction, preparation can make multiple head The head unit that arbitrary head module in module is moved independently of other head modules in width direction,

In the control process, controlled based on printing condition to multiple printing modes after the preparatory process by control unit Between switch over pattern switching control, follow aforementioned printed medium width direction substantial middle position carry out head module width At least one of the mobile centering control in degree direction and the module replacing control for arbitrarily replacing the head module used.

19. ink jet printing method as claimed in claim 18, wherein

In aforementioned control process, have the first control process, the second control process and third control process,

In the first control process, by printing mode input unit from the first printing mode, the second printing mode and third The applicable printing mode of input selection in printing mode, in first printing mode, before width direction configures with deviateing State head module, by the dot formed by the ink droplet of the front side head module in front of carriage direction arrangement front side line of dots portion and The rear side line of dots portion of the dot arrangement formed by the ink droplet of the rear side head module from carriage direction rear is continuously disposed in width It spends on the identical column in direction, a column line of dots in formation width direction, arranged in rows in carriage direction as a result, described In second printing mode, it is configured to aforementioned each head module to see width direction substantial middle in carriage direction by module mobile mechanism Position overlapping, by aforementioned front side line of dots portion and rear side line of dots portion configuration on different column, as a result, with the first printing die The two column line of dots in the roughly the same dot density formation width direction of formula, it is arranged in rows in carriage direction, in the third In printing mode, it is configured to aforementioned each head module to see width direction substantial middle position in carriage direction by module mobile mechanism Overlapping, each dot in aforementioned front side line of dots portion and rear side line of dots portion is alternately matched on the identical column of width direction It sets, as a result, with a column line of dots in the dot density formation width direction higher than the first printing mode, the second printing mode, It is arranged in rows in carriage direction,

It in the second control process, is controlled by the pattern switching of control unit, based in aforementioned first control process selection In printing mode, set the width position of each head module and the discharge condition of ink droplet,

In third control process, from the nozzle of each head module of head unit to by with aforementioned head module and module shifting Ink droplet is discharged on the printed medium of the head unit of motivation structure to be printed.