CN105339174A

CN105339174A - Inkjet recording device

Info

Publication number: CN105339174A
Application number: CN201480034834.2A
Authority: CN
Inventors: 栗原裕子; 河野贵
Original assignee: Hitachi Industrial Equipment Systems Co Ltd
Current assignee: Hitachi Industrial Equipment Systems Co Ltd
Priority date: 2013-07-03
Filing date: 2014-06-10
Publication date: 2016-02-17
Anticipated expiration: 2034-06-10
Also published as: JP2015013385A; WO2015001919A1; JP6114125B2; CN105339174B

Abstract

In a device with two or more nozzles which are retained within a print head, and which are operated to carry out printing of a single item of printed material, a situation may occur in which, despite a given nozzle becoming unable to continue printing due to the occurrence of a malfunction, the other nozzles are fine. In such a case, particularly when the customer is printing a printed material that does not permit the conveyor line to be quickly halted, considerable printing wastage is produced, despite the presence of nozzles which are able to print, resulting in the problem that the product production schedule is affected. To solve the aforementioned problem, when printing by operating two or more nozzles, in the event that a given nozzle is unable to continue printing due to the occurrence of a malfunction, control is carried out in such a way that printed content that should have been printed by the nozzle that is unable to continue printing is printed by other, normal nozzles. Through the use of the present invention, printing can continue without quickly halting the conveyor line, even when a malfunction has occurred in a given nozzle.

Description

Ink-jet recording apparatus

Technical field

The present invention relates to ink-jet recording apparatus, particularly relating to there are 2 with in the ink-jet recording apparatus of top nozzle, the ink-jet recording apparatus of nozzle can be tackled.

Background technology

As the background technology of the art, there is Japanese Unexamined Patent Publication 2010-137528 (patent document 1).In the document, describe " provide a kind of and there are 2 with in the ink-jet recording apparatus of top nozzle, the adjustable technology of longitudinal separation of the character printed for making each nozzle " this control.

Prior art document:

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2010-137528 publication

Summary of the invention

The technical problem that invention will solve

In the ink-jet recording apparatus that use 2 prints 1 printed matter with top nozzle, in order to perform printing with each nozzle ejection ink, ink-jet recording apparatus needs to control respectively each nozzle.But, might not the state of all nozzles all identical, even if very likely occur certain nozzle because occur abnormal and can not continue again to print time, the nozzle beyond it is normal situation.In this situation, especially for for the client that the printed matter (cable, pipe etc.) of pipeline cannot be stopped at once above printing, although exist and have the nozzle that can carry out printing, also can cause because of the impact of abnormal nozzle the problem producing more invalid printing.

In patent document 1, this point is not considered.

The technological means of dealing with problems

When operation 2 prints with top nozzle, when certain nozzle can not continue to print because occurring extremely again, carry out controlling to use the normal nozzles outside abnormal nozzle to print the print What that will be printed by the nozzle that can not continue to print.

Invention effect

Extremely also can without the need to stopping pipeline at once but continuing to print even if certain nozzle occurs.

Accompanying drawing explanation

Fig. 1 is overall structure and the functional block diagram of general ink-jet recording apparatus.

The structure example of printhead when Fig. 2 is twin-jet nozzle and printing example.

Fig. 3 is an example of various print parameters necessary in ink-jet recording apparatus when printing with twin-jet nozzle.

Fig. 4 be represent nozzle longitudinally configuration time print parameters distribute and the figure of print result.

Fig. 5 is that print parameters when representing nozzle landscape configuration distributes and the figure of print result.

Fig. 6 is the picture example for setting emergency flight control when whether implementing nozzle, and Jet control flow chart.

Fig. 7 is the figure of the black particle flight example representing that nozzle is longitudinal when configuring.

Fig. 8 is the figure of black particle flight example when representing nozzle landscape configuration.

Emergency flight control flow chart when Fig. 9 is nozzle.

Process chart when Figure 10 is nozzle releasing.

Figure 11 is the figure of nozzle print range when representing normal and time abnormal, and represents the table from the black granule number of nozzle flight when to print longitudinal 1 line in print range.

Detailed description of the invention

In following examples, for the purpose of simplifying the description, for being provided with 2 nozzles (below this printhead being called twin-jet nozzle printhead) in printhead, operating these nozzles and the device that 1 printed matter performs printing is described.

Embodiment 1

Fig. 1 (A) is the overall diagram of general ink-jet recording apparatus.1 is ink-jet recording apparatus, and 18 is displays, and 21 is printheads.In addition, the functional block diagram of ink-jet recording apparatus 1 has been shown in Fig. 1 (B).Ink-jet recording apparatus 1 is roughly made up of controller A and printing equipment B, to being in printing as by the product 7 of printed matter on pipeline 6.

Ink-jet recording apparatus 1 utilizes the control part 3 being provided with control device 8, with the storage part 4 being provided with memory 9 and program storage device 10, the information obtained from input part 2 is analyzed, after the control signal correction carrying out necessity in order to obtain best print result, efferent 5 is used to send output signal.Wherein, in the input part 2 of controller A, by for receive from by the signal of printed matter 11 by printed matter checkout gear 12, for receiving the transporting velocity checkout gear 14 from the signal of encoder 13 and the input unit 15 for the input signal that receives operator, the information of input printing equipment B and product, after above-mentioned control part 3 carries out calculation process, send output signal from efferent 5 couples of printing equipment B.

When the print data when wanting change setting to print and various print conditions, for the setting value be input to from the input block of printing equipment B and touch panel 16 in the input unit 15 of controller A, utilize the memory 9 of storage part 4 to store this setting value and utilize the control device 8 of control part 3 to carry out calculation process, showing on display 18 via display unit 17.

When starting to print the product 7 be on pipeline 6, utilize the position being determined product 7 by printed matter checkout gear 12 and transporting velocity checkout gear 14.Then, to the ink supplied from ink container 19 by pump 20, utilize driving voltage generating means 23 to make the nozzle 22 in printhead 21 encourage and form black particle 24, correspondingly utilize electrified voltage generating means 25 pairs of charged electrodes 26 to apply electrified voltage according to the print data in memory 9.Charged black particle 24, deflecting when the deflecting electrode 28 of the voltage by being applied with deflection voltage generating means 27, product 7 forming print point and prints.Now, charged electrode 26 adds the electric charge of equidirectional all the time to black particle 24, deflecting electrode 28 applies identical voltage all the time, so the yawing moment of print point deflects all the time upward.Uncharged black particle 24 is not used to print but is reclaimed by black groove (gutter) 59 and return ink container 19.In addition, for the state of printhead 21, all the time the control signal 29 utilizing the not shown test section be made up of sensor to export monitors, when each key element (nozzle 22, charged electrode 26, deflecting electrode 28) of printhead 21 occurs abnormal, ink-jet recording apparatus 1 immediately carries out exception and tackles process.

In addition, the state of installation's power source 30 is managed by supply unit 31, and the state of external connection terminals 32 is managed by jockey 33.

The structure example of the printhead 21 when Fig. 2 represents twin-jet nozzle and print example.Common ground in Fig. 2 (A), (B) there is nozzle 22a (hereinafter referred to as nozzle α) and nozzle 22b (hereinafter referred to as nozzle β) in printhead 21, nozzle α uses charged electrode 26a, deflecting electrode 28a, black groove 59a print, and nozzle β uses charged electrode 26b, deflecting electrode 28b, black groove 59b print.Herein, for convenience of explanation, nozzle, charged electrode, deflecting electrode, black groove merger are called child print head together.

Ink-jet recording apparatus carries out the control of nozzle α and nozzle β independently, and print What and/or the print setting value of nozzle α and nozzle β are also different, so carry out independently action.Herein, that considers nozzle α and nozzle β is configured to the longitudinally method of configuration and the method for landscape configuration.In the method longitudinally configured, as shown in Fig. 2 (A), deflecting electrode 28a, 28b configuration in the vertical, so as printed shown in example 7 (A), can print the character longitudinally simultaneously.And in the method for landscape configuration, as shown in Fig. 2 (B), deflecting electrode 28a, 28b are configured in transversely, so as printed shown in example 7 (B), character transversely can be printed simultaneously.

Fig. 3 is the figure of the example representing various print parameters necessary in ink-jet recording apparatus when printing with twin-jet nozzle.

In the present embodiment, control in twin-jet nozzle printhead, when making a nozzle occur abnormal, utilize remaining normal nozzles to print the print What that will be printed by abnormal nozzle.Fig. 3 shows the figure of the relation of now necessary print parameters.

Herein, nozzle refers to that to comprise the child print hair of this nozzle together with charged electrode, deflecting electrode, black groove merger raw abnormal, is because this exception causes the black particle sprayed from nozzle correctly can not print to state object product.Be called that nozzle is described by abnormal for child print head hereinafter.Abnormal reason has the charged particles amount in the blocking of nozzle, charged electrode to be different from the situations such as setting.In addition, as the method for abnormality detection, as shown in Figure 1, whether each key element (nozzle 22, charged electrode 26, deflecting electrode 28) for printhead 21 there is exception, and the control signal 29 utilizing each sensor to export all the time monitors and detects.

The figure of Fig. 3 (A) print What 38 that to be the figure of print What 34 when representing longitudinal configuration nozzle α and nozzle β and print range thereof, Fig. 3 (B) be when representing landscape configuration nozzle α and nozzle β and print range thereof.In addition, Fig. 3 (C) represents the structure example of print parameters, and Fig. 3 (D) represents print parameters setting screen example.

In Fig. 3 (A), the print range (parameter L1) 35 that nozzle α prints is different in the vertical from the print range that nozzle β prints (parameter M1) 36.In addition, the overall print range (Parameter N 1) 37 printed is merged by print range (parameter L1) 35 and print range (parameter M1) 36 and forms.That is, when a nozzle occurs abnormal, when utilizing remaining normal nozzles to print the print What that will be printed by abnormal nozzle, print range (Parameter N 1) 37 is used to carry out Print Control.Therefore, print What 34 is set as can by print range (parameter L1) 35 combination with print range (parameter M1) 36, or any one of print range (Parameter N 1) 37 prints.

In Fig. 3 (B), the print range (parameter L2) 39 that nozzle α prints is different in the horizontal from the print range that nozzle β prints (parameter M2) 40.In addition, the overall print range (Parameter N 2) 41 printed is merged by print range (parameter L2) 39 and print range (parameter M2) 40 and forms.That is, when a nozzle occurs abnormal, when utilizing remaining normal nozzles to print the print What that will be printed by abnormal nozzle, print range (Parameter N 2) 41 is used to carry out Print Control.Therefore, print What 38 is set as can by print range (parameter L2) 39 combination with print range (parameter M2) 40, or any one of print range (Parameter N 2) 41 prints.

Print parameters 42 shown in Fig. 3 (C) comprises the kinds such as character boundary 43, character height 44, black particle utilization rate 45.Shown in the setting screen 46 of these parameters as shown in Fig. 3 (D), input from touch panel 16, display on display 18.In Fig. 3 (D), when inputting from touch panel 16, the button that the project that such as can be set with each parameter and the setting value making them increase and decrease.

When print parameters 42 being used in print What 34 and 38, its scope of application is pressed print range and is distinguished.For print What 34, when print range is 35,36,37, each print parameters 42 is distinguished by parameter L1, M1, N1.For print What 38, when print range is 39,40,41, each print parameters 42 is distinguished by parameter L2, M2, N2.Wherein, print parameters is stored in memory 9, reads as required and uses.In ink-jet recording apparatus 1, suitably manage these print parameters 42 and they are used in printing.

Fig. 4 be represent the present embodiment utilize twin-jet nozzle and nozzle for two nozzles during longitudinal configuration normal time situation, and print parameters when during some nozzles distributes and the figure of print result.

In Fig. 4 (A), when printing when normal, nozzle α prints in print range 35 with parameter L1, and nozzle β prints in print range 36 with parameter M1.Print result now becomes the normal print 47 of Fig. 4 (B).When nozzle α occurs abnormal, print result such as abnormal printing shown in 48 becomes incorrect.When nozzle β occurs abnormal, similarly print result such as abnormal printing shown in 49 becomes incorrect.In order to solve this problem, in the present embodiment, shown during exception as Fig. 4 (A), when a part of nozzle occurs abnormal, switch to the process that normal nozzles is printed in print range 37 with Parameter N 1.Its result becomes the print result 50 of Fig. 4 (B), even if there is the abnormal print result that also realization is identical with time normal.

Fig. 5 be represent the present embodiment utilize twin-jet nozzle and nozzle for the nozzle of two during landscape configuration normal time situation, and print parameters when during some nozzles distributes and the figure of print result.

In Fig. 5 (A), when printing when normal, nozzle α prints in print range 39 with parameter L2, and nozzle β prints in print range 40 with parameter M2.Print result now becomes the normal print 51 of Fig. 5 (B).When nozzle α occurs abnormal, print result such as abnormal printing shown in 52 becomes incorrect.When nozzle β occurs abnormal, similarly print result such as abnormal printing shown in 53 becomes incorrect.In order to solve this problem, in the present embodiment, shown during exception as Fig. 5 (A), when a part of nozzle occurs abnormal, switch to the process that normal nozzles is printed in print range 41 with Parameter N 2.Its result becomes the print result 54 of Fig. 5 (B), even if there is the abnormal print result that also realization is identical with time normal.

Like this, when nozzle occurs abnormal, situation is in the past that a part for print result is not printed, so produce invalid printing (useless printing), but in order to prevent this problem, carry out utilizing normal nozzles to continue the process printed, generation entirety in advance carries out the print parameters (N1, N2) time print range (37,41) that print, switches to when occurring abnormal the Print Control only using normal nozzles.According to the present embodiment, even if there is the abnormal print result that also realization is identical with time normal, the problem of invalid printing can be solved.

In addition, when switching to the Print Control only using normal nozzles when occurring abnormal, this state preserved in memory, to this state of external notification of ink-jet recording apparatus, thus the outside reply that the switching with Print Control can be made to carry out becomes easy.In addition, occur abnormal after can continue on a crash basis to print, so repair terminate before cannot print during shorten.Therefore, have and can reduce invalid printing generation, suppress the effect that the product development schedule of client is impacted.

As mentioned above, the situation imagining twin-jet nozzle in the present embodiment is illustrated, if but will the situation generic way with multiple nozzle be expressed, be then as described below.For the parameter needed for printing, prepare a parameter (parameter X) when utilizing multiple nozzle to print 1 print result, (nozzle number-1) individual utilization nozzle that there occurs beyond abnormal nozzle prints the parameter (parameter Y) when 1 print result, under normal circumstances, when all nozzles normally work, each nozzle is utilized to use ready parameter X to perform printing.Then, at certain nozzle because occur abnormal and can not continue again to print time, switch to and carry out by the normal nozzles operation parameter Y beyond it process that prints, thus can the present embodiment be realized.

Embodiment 2

Fig. 6 (A) is provided for the picture example 55 can selecting whether only to use the Print Control of normal nozzles when occurring abnormal.Fig. 6 (B) represents its Jet control flow chart.

When only using the process of the Print Control of normal nozzles during so that exception to occur as emergency flight control process during nozzle, in picture example 55, project 56 " emergency flight control during nozzle " has the option of " do not perform/perform ", only carries out the emergency flight control process based on the present embodiment when " execution ".

In flow chart shown in Fig. 6 (B), first judge nozzle position at place of branch 57.Nozzle monitors condition of nozzles by using control signal 29 and judges.When 2 nozzles are both abnormal, be transferred to common abnormality processing by processing 58.In common abnormality processing, interrupt the printing that abnormal nozzle occurs, show the message that nozzle is in abnormality on display 18.When only there being single-nozzle abnormal, by processing the setting of 59 inspection items 56 " emergency flight control during nozzle ".When being set as " not performing ", be transferred to common abnormality processing by processing 58.When for " execution ", perform emergency flight control process f2.The details of emergency flight control process f2 will describe below.When there is no exception, control the mode of 2 nozzles by processing 60 maintenances, by processing the printing that 61 proceed to use the respective print range of nozzle α, nozzle β and print parameters L (L1, L2), M (M1, M2).

According to the present embodiment, the setting of emergency flight control process when whether carrying out nozzle can be inputted, can when not needing automatically to carry out emergency flight control process so have---when such as can stop the setting under the situation of pipeline, test model immediately etc., emergency flight control process is set as the effect of OFF.

Embodiment 3

Fig. 7 be utilize twin-jet nozzle and nozzle for longitudinal configuration when, printing during normal in the present embodiment and abnormal time printing in black particle flight example.Wherein, normal print 47 when normally working for nozzle α and nozzle β both sides in Fig. 7 (A) shows black particle flight example 62, printing 50-α time abnormal for nozzle α in Fig. 7 (B) shows black particle flight example 63-α, and printing 50-β time abnormal for nozzle β in Fig. 7 (C) shows black particle flight example 63-β.Herein, what black particle flight example represented is that character is longitudinal.

First, when normal print 47, as Suo Shi Fig. 7 (A), black particle flight example 62 is according to print What correspondingly normal flight.And during nozzle α exception, as shown in Fig. 7 (B), owing to only printing with nozzle β, the scope that nozzle β prints as shown in black particle flight example 63-α is expanded compared with normal print 47 on character is longitudinal, but the hit location of black particle 24 is positions identical with the black particle flight example 62 of normal print 47.

Equally, when nozzle β exception, as shown in Fig. 7 (C), owing to only printing with nozzle α, the scope that nozzle α prints as shown in black particle flight example 63-β is expanded compared with normal print 47 on character is longitudinal.But, because the yawing moment of black particle 24 deflects all the time upward, so the hit location of black particle 24 is different from the black particle flight example 62 of normal print 47, there is the problem of the top movement to character longitudinal direction.

Fig. 8 be utilize twin-jet nozzle and nozzle for landscape configuration when, printing during normal in the present embodiment and abnormal time printing in black particle flight example.Wherein, normal print 51 when normally working for nozzle α and nozzle β both sides in Fig. 8 (A) shows black particle flight example 64, printing 54-α time abnormal for nozzle α in Fig. 8 (B) shows black particle flight example 65-α, and printing 54-β time abnormal for nozzle β in Fig. 8 (C) shows black particle flight example 65-β.Herein, the expression different from Fig. 7 of black particle flight example is pipeline direction.

First, when normal print 51, as Suo Shi Fig. 8 (A), black particle flight example 64 is according to print What correspondingly normal flight.And during nozzle α exception, as shown in Fig. 8 (B), owing to only printing with nozzle β, the scope that nozzle β prints as shown in black particle flight example 65-α is expanded compared with normal print 51 on pipeline direction, but the hit location of black particle is the position identical with the black particle flight example 64 of normal print 51.

Equally, when nozzle β is abnormal, as shown in Fig. 8 (C), owing to only printing with nozzle α, the scope that nozzle α prints as shown in black particle flight example 65-β is expanded compared with normal print 51 on pipeline direction.Further, in the configuration of nozzle α and nozzle β, the scope of the character longitudinal direction that normal nozzles prints does not change, so the hit location of black particle is the position identical with the black particle flight example 64 of normal print 51.

Like this, when only using normal nozzles to carry out Print Control when occurring abnormal, there is print position can the situation of the corresponding movement with the position of normal nozzles, needs to change Print Control.Emergency flight control process f2 for solving this problem is below described.

Fig. 9 is when performing the Jet control flow chart shown in the Fig. 6 (B) in the present embodiment, the flow chart f2 of the emergency flight control process performed when the project 56 " emergency flight control during nozzle " shown in Fig. 6 (A) is " execution ".In Fig. 9, first check at place of branch 66 that it is that abnormal nozzle occurs for which in nozzle α, nozzle β.

When nozzle α is abnormal, by process r1, ink-jet recording apparatus is set as " the emergency flight control pattern " of implementing emergency flight control, and by process r2, emergency flight control pattern is in external notification.Now, the means of notice use display 18 display frame and/or use jockey 33 to carry out communicating, signaling.Afterwards, by processing the mode that 67 are set as only Control Nozzle β, being set as using print parameters N to print by processing 68, printing by processing 69 continuation.

When nozzle β is abnormal, by processing the printing of 70 interruption nozzle β, and show by process 71 message that nozzle β is in abnormality on display 18.Afterwards, the guide of print head position is changed by processing 72 display remindings.This guide in order to whether change print head position for customer selecting shows.This is the countermeasure when print position as shown in Figure 7 is moved, and when place of branch 73 changes print head position, can realize the emergency flight control only carrying out Print Control when abnormal generation by normal nozzles.Physically mobile print head position in process 74, and remove in process 75 and guide, be transferred to printable state by processing 76.Afterwards, after the process carrying out above-mentioned process r1, r2, by processing the mode that 77 are set as only Control Nozzle α, being set as using print parameters N to print by processing 68, printing by processing 69 continuation.

When place of branch 73 does not change print head position, the emergency flight control only carrying out Print Control when abnormal generation by normal nozzles can not be realized.Therefore, in process 78, make guide show minimize and end process.Now, although nozzle does not perform " emergency flight control pattern ", but work under the common Print Control of maintenance.When wanting under this state to change to " emergency flight control pattern ", show by making guide after again maximizing and change print head position in process 73, thus can change to " emergency flight control pattern ".

Process chart when only being undertaken that in the emergency flight control of Print Control, nozzle is removed by normal nozzles when Figure 10 is abnormal generation.Judge abnormal whether releasing at place of branch 79, in discharged situation, check whether at place of branch 80 and to print with emergency flight control pattern.When being once in emergency flight control pattern, check the abnormal nozzle removed at place of branch 81 further.

When the abnormal releasing of nozzle α, remove emergency flight control pattern by process n1, and by process n2 to external notification emergency flight control mode release.Now, the means of notice use display 18 display frame and/or use jockey 33 to carry out communicating, signaling.Afterwards, by processing the mode that 82 are set as control 2 nozzles, being set as using the respective print range of nozzle α, nozzle β and print parameters L (L1, L2), M (M1, M2) to print by processing 83, printing by processing 84 continuation.

When the abnormal releasing of nozzle β, change the guide of print head position by processing 85 display remindings.This guide shows to select whether to change print head position for user.When place of branch 86 changes print head position, common Print Control can be returned.Now, by processing 87 change print head position, removing in process 88 and guiding.Afterwards, the process of above-mentioned process n1, n2 is transferred to.

When place of branch 86 does not change print head position, common Print Control cannot be returned.Now, in process 89, make guide show minimize and end process.In this situation, also do not carry out common Print Control even if nozzle is removed but work under maintenance " emergency flight control pattern ".When wanting to change to common Print Control under this state, show by making guide after again maximizing and change print head position in branch 86, thus common Print Control can be changed to.

As mentioned above, in the present embodiment, when only carrying out Print Control by normal nozzles when abnormal generation, can tackle print position can the situation of the corresponding movement with the position of normal nozzles, even if occur extremely also can obtain the print result identical with time normal, the waste of printing can be reduced.

Embodiment 4

Figure 11 (A) show nozzle α, β in the present embodiment all normal time normal time print 47 and nozzle α abnormal time exception time print the print range of the nozzle β in 50.In addition, the table of the black granule number from nozzle β flight required when Figure 11 (B) is longitudinally 1 line (1 bar line) 90 represented in the print range of printing Figure 11 (A).

Black granule number when printing longitudinal 1 line 90 changes with the value of the black particle utilization rate 45 in print parameters.Herein, ink particle utilization rate 45 is used to specify the parameter being actually used in selection (interval is chosen) ratio of the black particle of printing from the black particle of nozzle output, when will by perform the black particle printed use number be set to the black particle exported from nozzle N number of 1, be appointed as 1/N and use.Such as, be 1/2 when in use 21.The optimum value of ink particle utilization rate 45 is correspondingly different with print quality and pipeline speed.Generally speaking, if increase the ratio of selection, then can suppress the impact between ink and ink, so print quality can be improved further, but be difficult to the high speed of tackling pipeline speed.

Herein, in the table 91 of Figure 11 (B), print when to illustrate when black particle utilization rate 45 is identical normal 47 and abnormal time print the black granule numbers that the printing in 50 uses.When ink particle utilization rate 45 is 1/1, the black granule number 92 printing the printing use in 47 time normal is 8, and the black granule number 93 that printing time abnormal in printing 50 uses is 16.Equally, when black particle utilization rate 45 is 1/2, the black granule number 94 printing the printing use in 47 time normal is 16, and the black granule number 95 printing the printing use in 50 time abnormal is 32.Ink particle exports from nozzle evenly, so print the black granule number used to be equal to the time printed longitudinally needed for 1 line 90.That is, when pipeline speed and black particle utilization rate 45 do not change, under emergency flight control pattern to print during exception 50 print time, print the black granule number that uses and print 2 times that time of expending prints 47 when needing normal.Therefore, in order to obtain the print result same with printing 47 time normal to when printing 50 prints during exception under emergency flight control pattern, also need to carry out correcting process except parameters revision.

The method of correcting process has 2 kinds.A kind of be when exception print 50 make pipeline speed also slack-off method.This correcting process has the advantage that just can print without the need to changing print parameters in inside.In this situation, need whether be in emergency flight control pattern to external notification, this can be realized by the process n2 of the flow chart of process r2 or Figure 10 of the flow chart f2 of Fig. 9.

Another kind limits the black particle utilization rate 45 that can set in advance, the method printed again after modifying to black particle utilization rate 45 when printing 50 when exception.Specifically, when the black particle utilization rate 45 of nozzle α, nozzle β is set to 1/N, in advance N is set as identical even number value.When printing 47 when carrying out normal in this condition, nozzle α, β print with the black particle utilization rate 45 of setting respectively.In addition, when printing 50 when carrying out exception under emergency flight control pattern, the black granule number that normal nozzles uses when printing becomes 2 times, so be that new black particle utilization rate 45 prints by value (that is, the making N reduce by half) auto modification of 2 times of set black particle utilization rate 45.Make the N preset be that the reason of even number value is, needing to reduce by half under emergency flight control pattern uses therefore aliquot value to be easy to process, and in addition, the reason being set to identical value is to make each nozzle Print Control become simple.

For the table 91 of Figure 11 (B), as described in the hurdle of " having correction ", when normal, print the situation of 47, the black particle utilization rate of nozzle α, β does not use 1/1 but is set as 1/2, and black granule number 96 is now 16.Afterwards, when printing 50 when becoming exception under emergency flight control pattern, because the doubles of the particle used, so make black particle utilization rate be 2 times of the value of setting, be modified to 1/1, black granule number 97 now is also 16.This correcting process has the advantage without the need to changing pipeline speed.

As mentioned above, in the present embodiment, during emergency flight control when carrying out nozzle, by revising predetermined black particle utilization rate, have to print when can make normal and abnormal time printing in the identical effect of print quality.

Embodiment 5

Describe the situation that nozzle is 2 in above-described embodiment, but also can consider that nozzle exists the situation of more than 3.This situation adopts the method be synthesized into by the control method in twin-jet nozzle, so use above-mentioned the present embodiment for 3 with any 2 nozzles in top nozzle, can similarly deal with problems.

In addition, as shown in Fig. 7 (C), when nozzle is longitudinally configuration, if the content that will be printed by abnormal nozzle is printed by the normal nozzles be configured on the upside of it, then there is printable character and indulge the problem be moved upward to character, so when the downside of abnormal nozzle exists normal nozzles, preferably support by the normal nozzles being configured in downside.

In addition, by utilizing the normal nozzles adjoined with abnormal nozzle to print the content that will be printed by abnormal nozzle, the print range of normal nozzles can be made to be necessary Min..

The present invention is not limited to above-described embodiment, comprises various variation.Such as, above-described embodiment is the detailed description carried out for ease of the present invention being described with understanding, such as, the configuration describing twin-jet nozzle in above-described embodiment is longitudinal situation and horizontal situation, but be not limited to this configuration, such as, also can consider to make that nozzle α's and nozzle β be configured to oblique configuration.In this situation, oblique can be understood as longitudinally with the synthesis of horizontal configuration, so by simultaneously or combinationally use the control of the vertical and horizontal in above-mentioned the present embodiment, can similarly deal with problems.

In addition, the present invention is not limited to possess illustrated all structures.Further, a part for the structure of certain embodiment can be replaced into the structure of other embodiments, or in the structure of certain embodiment, add the structure of other embodiments.In addition, for a part for the structure of each embodiment, can add, delete, replace other structures.

Description of reference numerals

1: ink-jet recording apparatus

21: printhead

22a: the nozzle α in twin-jet nozzle

22b: the nozzle β in twin-jet nozzle

37: print range (Parameter N 1)

41: print range (Parameter N 2)

42: print parameters

56: project " emergency flight control during nozzle "

F2: emergency flight control flow chart

Claims

1. one kind comprises the ink-jet recording apparatus of multiple child print head; described child print head comprises to be made ink ejection and granular nozzle, black particle being applied to charged electrode that electrified voltage makes it charged, making the deflecting electrode of charged black particle deflection and reclaiming the black groove of black particle not for printing; the feature of described ink-jet recording apparatus is, comprising:

Detect child print head and whether abnormal test section occurs, and

Separately control described multiple child print head to carry out the control part of Print Control,

This control part, when described test section detects that 1 sub-printhead occurs abnormal, switches the print What that Print Control will be printed by this abnormal child print head to utilize other normal-sub printhead prints.

2. ink-jet recording apparatus as claimed in claim 1, is characterized in that:

Comprise the storage part of the controling parameters preserving each described nozzle,

In this storage part, preserve and utilize multiple child print head to print the situation of 1 print result and the controling parameters under utilizing the child print head occurred beyond abnormal child print head to print each situation of the situation of 1 print result,

Described control part according to the state of nozzle use in described controling parameters any one carry out Print Control.

3. ink-jet recording apparatus as claimed in claim 1 or 2, is characterized in that:

Comprise and can be used for inputting the input part whether carrying out the setting of emergency flight control, the print What that wherein said emergency flight control utilizes other normal-sub printhead prints will be printed by described abnormal child print head,

When this input results is the setting carrying out emergency flight control, when described detecting unit detects that 1 sub-printhead occurs abnormal, stops to use this abnormal child print head, switch to described emergency flight control.

4. the ink-jet recording apparatus according to any one of claims 1 to 3, is characterized in that, comprising:

Recording unit, preserves this state when switching to the Print Control of the print What that the normal-sub printhead prints that utilizes other will be printed by described abnormal child print head; With

By this State-output to outside efferent.

5. the ink-jet recording apparatus according to any one of Claims 1 to 4, is characterized in that:

Described multiple child print head is longitudinally configured,

In other normal-sub print head configuration described when the upside of described abnormal child print head, switch Print Control with the print What utilizing other normal-sub printhead prints and will be printed by described abnormal child print head before, the position of this normal-sub printhead is moved in the vertical.

6. one kind comprises the ink-jet recording apparatus of multiple child print head; described child print head comprise make ink ejection and granular nozzle, black particle applied to charged electrode that electrified voltage makes it charged, make the deflecting electrode of charged black particle deflection and reclaim print in the black groove of untapped black particle; the feature of described ink-jet recording apparatus is, comprising:

Detect child print head and whether abnormal test section occurs, and

This control part is when described test section detects that 1 sub-printhead occurs abnormal, stop to use this abnormal child print head, switch Print Control to carry out emergency flight control, and predetermined black particle utilization rate is revised, the print What that wherein said emergency flight control utilizes other normal-sub printhead prints will be printed by this abnormal child print head, described black particle utilization rate is the ratio selected in the black particle sprayed from nozzle for the black particle printed.

7. the ink-jet recording apparatus according to any one of claim 1 ~ 6, is characterized in that:

Described test section is the sensor of the state monitoring described child print head, detects exception by the state of the nozzle in supervision child print head, charged electrode, deflecting electrode.