CN101439621A - Liquid ejecting apparatus - Google Patents
Liquid ejecting apparatus Download PDFInfo
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- CN101439621A CN101439621A CNA2008101849119A CN200810184911A CN101439621A CN 101439621 A CN101439621 A CN 101439621A CN A2008101849119 A CNA2008101849119 A CN A2008101849119A CN 200810184911 A CN200810184911 A CN 200810184911A CN 101439621 A CN101439621 A CN 101439621A
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Abstract
There is provided a liquid ejecting apparatus for ejecting liquid to a printing material, having a platen for supporting the printing material, an ejection head for ejecting the liquid to the printing material by reciprocating on the printing material supported by the platen, an optical sensor reciprocating together with the ejection head and having a light emitting section for emitting light toward the printing material and the platen and a light receiving section for receiving light reflected from the printing material to optically detect whether or not the printing material exists, a usage measuring section for measuring usage of the liquid ejecting apparatus and a correcting section for correcting a result detected by the optical sensor based on the usage measured by the usage measuring section.
Description
The application be on February 28th, 2006 that submit, application number be 200610091650.7, denomination of invention divides an application for the application of " liquid injection device and control method thereof and program ".The related application of cross reference
It is 2005-053571, the applying date to be that on February 28th, 2005 and application number are that 2005-072782, the applying date are the priority on March 15th, 2005 that the application requires Japanese patent application No., and its content is combined to be quoted.
Technical field
The present invention relates to liquid injection device and control method thereof and program.Especially, the present invention relates to a kind of liquid injection device and the control method and the program that inject liquid on the printed material.
Background technology
Usually, as the example of liquid injection device, well-known is ink jet printing device, this equipment spray ink to the printed material to print thereon.About ink jet printing device, known so-called borderless print, the i.e. printing type that around printed material, does not blank.The PRN device that can carry out borderless print has the sensor that detects the printed material edge, and increases certain surplus by the outside at the paper edge that detects based on sensor, and ink is ejected into outside the edge.
Yet,, reduce because ink is stained former thereby precision that be used in the sensor that detects the printed material edge such as sensor along with the increase of the use of the ink jet printing device of carrying out borderless print.Particularly, when using optical pickocff, light quantity of launching and the light quantity that receives reduce along with the reduction of accuracy of detection, and therefore, optical pickocff can detect the inside of printed material when precision reduces and be the edge.In order to address this problem, thereby for example Japanese patent application publication No. 2004-314410 and 2003-127341 disclose presupposed the method that detects outside the edge that error is ejected into ink with certain surplus printed material when detecting the edge of printed material.
Yet, Japanese patent application publication No. is the method that patent application the proposed existing problems of 2004-314410 and 2003-127341: when the detection error is little, that is, when ink-jet apparatus uses not for a long time, ink jet printing device is ejected into ink that printed material is outer can waste a considerable amount of inks.Also there is a problem in said method: the sensor that detects the printed material edge can be made dirty owing to spray a large amount of useless inks, thereby further reduce the precision that detects.
Summary of the invention
In order to address the above problem, according to one aspect of the present invention, provide a kind of liquid injection device that injects liquid on the printed material, it has: the support unit that is used to support described printed material; By being supported the injector head that moves back and forth, injects liquid on the printed material of member supporting on the printed material; With the optical pickocff that injector head moves back and forth, it has to printed material and the radiative smooth radiating portion of support unit and receives from the light receiving part of the light of printed material reflection, so that the existence of optical detection printed material whether; Measure the operating position measure portion of liquid injection device operating position; Retouch with the operating position correction optical pickocff testing result of measuring based on the operating position measure portion.Therefore, even under the situation that use increases and the accuracy of detection of optical pickocff changes as time goes by of liquid injection device, whether the existence that accurately detects printed material also becomes possibility.
In this liquid injection device, retouch is based on along with increasing of using, printed material are present in by the hypothesis in the outside of the detected printed material of optical pickocff the result being revised.Therefore, even under the situation that the accuracy of detection of optical pickocff descends, whether the existence that accurately detects printed material becomes possibility.
The aforesaid liquid spraying equipment can be arranged to the retouch correction and move back and forth there is printed material whether testing result on the direction at optical pickocff.Therefore, even under the situation that the accuracy of detection of optical pickocff descends, the width that accurately detects printed material on the direction that injector head moves back and forth becomes possibility.
Liquid injection device comprises also and being used for along transmitting the hop of printed material with the direction that moves back and forth the direction quadrature of optical pickocff that retouch can be revised the testing result whether printed material exists in the printed material transmission direction.Therefore, even under the situation that the accuracy of detection of optical pickocff descends, the width that accurately detects printed material on direction of transfer becomes possibility.
Liquid injection device can be arranged such that the operating position measure portion measures operating position launch time by the light of measuring light radiating portion.In this case, the operating position measure portion is by measuring the Time Calculation light launch time of power connection.Therefore, revising the testing result whether printed material exists based on staining of causing of ink becomes possibility, and staining that ink causes is one of reason that causes the decline of optical pickocff accuracy of detection.
Liquid injection device can be arranged such that the liquid emitted dose calculating operating position that the operating position measure portion is sprayed by measuring injector head.At this moment, the aforesaid liquid spraying equipment be arranged such that the operating position measure portion by the counting printed material number calculate emitted dose.Also have, the operating position measure portion can be calculated emitted dose by the total amount of liquid of measuring the injector head ejection.Further, the operating position measure portion can be calculated amount of liquid based on jet mode.Therefore, the testing result that whether exists based on the reduction correction printed material of luminous quantity becomes possibility, and the reduction of luminous quantity is to cause one of reason that the optical pickocff accuracy of detection descends.
The aforesaid liquid spraying equipment can be arranged so that retouch correction result subtly when the detection resolution of optical pickocff is high.Therefore, under the limit of the detection resolution of optical pickocff, accurately correction result becomes possibility.
Retouch can determine to inject liquid into scope on the printed material based on correction.Therefore, no matter the accuracy of detection of optical pickocff is a height or low, adopts little surplus (margin) can realize borderless print.
According to a second aspect of the present invention, provide a kind of control to be used for the method for the liquid injection device of atomizing of liquids to the printed material, comprise step: by moving back and forth optical pickocff being supported on the printed material of member supporting, and receive from the light of printed material reflection to printed material and support unit emission light with by light receiving part, with the optics sensor light learn detect printed material existence whether; Measure the operating position of liquid injection device; With testing result based on operating position correction optical pickocff.Therefore, can obtain the effect same with first aspect.
According to a third aspect of the present invention, a kind of liquid injection device that is used to inject liquid on the printed material is provided, have the support unit that is used to support printed material; By moving back and forth on the printed material of member supporting to inject liquid into the injector head on the printed material being supported; The optical pickocff that moves back and forth with injector head, it has to printed material and the radiative smooth radiating portion of support unit, receive the rating unit that the light intensity that receives from the light receiving part of the light of printed material reflection with light receiving part and threshold value compare, and whether exists with the optical detection printed material; Measure the operating position measure portion of liquid injection device operating position; Retouch with the operating position correction optical pickocff testing result of measuring based on the operating position measure portion.Therefore, even when the use of liquid injection device increases and the accuracy of detection of optical pickocff descends as time goes by, whether the existence that accurately detects printed material becomes possibility.
The aforesaid liquid spraying equipment can be arranged such that retouch correction threshold with increasing of using and on the direction of light intensity decreasing.Therefore, even when the accuracy of detection of optical pickocff descends, whether the existence that accurately detects printed material becomes possibility.
Liquid injection device can be arranged such that the retouch correction is used to detect the threshold value that whether printed material exists on the direction that optical pickocff moves back and forth.Therefore, even when the accuracy of detection of optical pickocff descends, the width that accurately detects printed material on the direction that injector head back and forth moves on to becomes possibility.
Liquid injection device can also comprise and being used for along transmitting the hop of printed material with the direction that moves back and forth the direction quadrature of optical pickocff that the retouch correction is used to detect the threshold value whether printed material exists on the printed material direction of transfer.Therefore, even when the accuracy of detection of optical pickocff descends, the width that accurately detects printed material on direction of transfer becomes possibility.
Liquid injection device can be arranged such that the operating position measure portion measures operating position launch time by the light of measuring light radiating portion.In this case, the operating position measure portion is by measuring the Time Calculation light launch time of power connection.Therefore, revising the testing result whether printed material exists based on staining of causing of ink becomes possibility, and staining that ink causes is one of reason that causes the decline of optical pickocff accuracy of detection.
Liquid injection device can be arranged such that the liquid emitted dose calculating operating position that the operating position measure portion is sprayed by measuring injector head.At this moment, the aforesaid liquid spraying equipment is arranged such that the number calculating emitted dose of operating position measure portion by the counting printed material.
Also have, the operating position measure portion can be calculated emitted dose by measuring from the amount of liquid of injector head ejection.In addition, the operating position measure portion can be calculated emitted dose based on jet mode.Therefore, the testing result that whether exists based on the reduction correction printed material of luminous quantity becomes possibility, and the reduction of luminous quantity is to cause one of reason that the optical pickocff accuracy of detection descends.
In addition, the aforesaid liquid spraying equipment can be arranged such that retouch correction result subtly when the detection resolution of optical pickocff is high.Therefore, under the limit of the detection resolution of optical pickocff, accurately correction result becomes possibility.
Retouch can determine to inject liquid into scope on the printed material based on correction.Therefore, no matter the accuracy of detection of optical pickocff is a height or low, adopts little surplus (margin) can realize borderless print.
According to the 4th aspect of the present invention, provide a kind of control to be used for the method for the liquid injection device of atomizing of liquids to the printed material, may further comprise the steps: by moving back and forth optical pickocff being supported on the printed material of member supporting, to printed material and support unit emission light, receive from the light of printed material reflection by light receiving part, and light intensity and the threshold value that light receiving part receives compared, thereby whether with the existence of optics sensor light detection printed material; Measure the operating position of liquid injection device; With testing result based on operating position correction optical pickocff.Therefore, can obtain the effect same with the third aspect.
It is noted that and above-mentioned all essential features of the present invention have not necessarily been described in general introduction of the present invention.The present invention also can be the sub-portfolio of above-mentioned feature.
Description of drawings
Fig. 1 is the perspective view of ink jet printing device.
Fig. 2 is the block diagram of functional module that the control section of ink-jet apparatus is shown.
Fig. 3 A and 3B explain that optical pickocff detects the schematic diagram of the operation whether printed material exist.
Fig. 4 is the position (to the distance of initial position) of explanation optical pickocff and the curve map of the relation of the electrical signal intensity of electric signal measurement part.
Fig. 5 is the curve map that the correction value example that is stored in the correction value storage area is shown.
Fig. 6 illustrates the curve map that is stored in other correction value examples in the correction value storage area.
Fig. 7 is the block diagram that ink jet printing device control section functional module is shown.
Fig. 8 is the position (to the distance of initial position) of explanation optical pickocff and the curve map of the relation of the electrical signal intensity of rating unit.
Fig. 9 is the curve map that the correction value example that is stored in the correction value storage area is shown.
Figure 10 illustrates the curve map that is stored in other correction value examples in the correction value storage area.
The specific embodiment
Now, describe the present invention on the basis of preferred embodiment, preferred embodiment is not to be used to limit the scope of the invention, and only is example of the present invention.All features of describing among the embodiment and make up the requisite feature of not necessarily the present invention.
Fig. 1 shows the perspective view as the ink jet printing device 10 of an example of the liquid injection device relevant with embodiments of the invention.The purpose of present embodiment provides a kind of ink jet printing device 10, this ink jet printing device is printed printed material by ink is ejected on the printed material 12, even and also can detect the ability whether printed material 12 exists when the use with ink jet printing device 10 increases and the accuracy of detection of optical pickocff 60 changes as time goes by.
As shown in Figure 1, ink jet printing device 10 has paper feeding part 20, hop 30, printing portion 40 and the discharge section of arranging successively from upstream side along the transmission direction of printed material 12 70.Ink jet printing device 10 also has their control section 100 of control.
Printing portion 40 has thereunder support unit 56 of layout, at reciprocating balladeur train 42 on the support unit 56, be arranged in the record head 54 below the balladeur train 42 and be arranged in the optical pickocff 60 of balladeur train 42 sides.Record head 54 and optical pickocff 60 move back and forth on support unit 56 with balladeur train 42.Printing portion 40 also has the carriage motor 48 that is used to produce rotary driving force, be wrapped on the carriage motor 48 and with balladeur train 42 link together synchronously with 44, littlely be with 46 and guide carriage 42 reciprocating carriage rails 50 along what balladeur train 42 reciprocating directions were extended.Little have a large amount of candy strips with 46, and candy strip equally spaced and with short direction extends on longitudinally.
Balladeur train 42 has dismountable print cartridge 49 of depositing.Print cartridge 49 is portion's ink reservoir and provide ink to record head 54 within it.Print cartridge 49 separate storage have multiple ink to reach the purpose of enameling and printing at printed material 12.For example, storage has Huang, magenta, green grass or young crops, black four chromatic inks in the four look print cartridges 49 as shown in Figure 1.Yet the kind of ink is not limited thereto.Be contained in that other kind inks in the print cartridge 49 comprise Huang, magenta, green grass or young crops, inferior light is black, light is black, red, purple and glazing China ink (transparent).Record head 54 has a plurality of nozzles, and each ink can be from any one nozzle ejection.
In the ink jet printing device 10 as shown in Figure 1, printed material 12 is stacked in the paper feed tray 22.Transmission driven roller 32 obtains driving force by conveyer belt 36 from transmission motor 38 under the control of control section 100, and clamps the paper of printed material 12 the superiors of piling up in the paper feed tray 22 and send it under the record head 54 and the position on the above-mentioned support unit 56 with transmission driven voller 34.At this moment, support unit 56 is at record head 54 times guiding printed material 12 and from the back support printed material 12 of printed material 12.Under the situation of transmission on the support unit 56, carriage motor 48 rotation drives is with 44 synchronously at printed material 12, with synchronously with 44 balladeur trains that are connected 42 in reciprocating motion on printed material 12 under the guiding of carriage rail 50.When balladeur train 42 moved back and forth, the record head 54 that is arranged in balladeur train 42 bottoms sprayed ink to printed material 12.Then, when the ink of record head 54 ejections arrived printed material 12, printed material 12 was printed.After this, ink jet printing device 10 further transmits printed material 12 and prints whole printed material 12 from record head 54 these two operating process of ejection ink by repeating hop 30.Then, under the control of control section 100, discharge driven roller 72 and obtain driving force from transmission motor 38, and clamp printed material 12 so that its front end from ink jet printing device 10 is discharged with discharging driven voller 74 by conveyer belt 36.
Fig. 2 is the functional block diagram that the control section 100 of ink jet printing device 10 is shown.Control section 100 have the signal that reception sends from personal computer 14 buffer 156, be used for storaging printing data frame buffer 142, be used to control the operated system controller 140 of whole ink jet printing device 10 and memory 144.System controller 140 also with the main scanning drive circuit 152 that is used to drive carriage motor 48, be used to drive transmission motor 38 subscan drive circuit 154, be used for activation record head 54 head drive circuit 146, be used to control the light radiating portion 62 of optical pickocff 60 and the optical pickocff control circuit 148 and the encoder 52 of light receiving part 64 links together.Optical pickocff control circuit 148 also has the electric signal measurement part 150 of the reverberation institute electrical signal converted that is used for 64 receptions of measuring light receiving unit.
In said structure, the print data of transmitting from personal computer 14 once is stored in the buffer 156.Then, system controller 140 reads information and based on this information, transmits a signal to main scanning drive circuit 152, subscan drive circuit 154, head drive circuit 146 and some other circuit from buffer 156.Frame buffer 142 storages are from the print data of the multiple color component of buffer 156 receptions.The control signal that head drive circuit 146 sends according to system controller 140 is read the print data of shades of colour component from frame buffer 142, and according to each chromatic nozzle in this print data activation record head 54.Encoder 52 is arranged in the balladeur train 42 and moves back and forth with balladeur train.At this moment, 52 pairs of encoders are little sends to system controller 140 with the candy strip counting on 46 and with measured value.Therefore, system controller 140 can identify balladeur train 42 and is positioned at apart from initial position position how far.
Fig. 3 A and 3B explain that optical pickocff 60 detects the operation chart whether printed material exists.Particularly, Fig. 3 A is a side view, and Fig. 3 B is a plan view.
As shown in Figure 3A, optical detection part 60 moves back and forth with balladeur train 42 along continuous straight runs on the printed material 12 that is placed on the support unit 56.It should be noted that printed material 12 is arranged in the initial position side (figure right positions) in abutting connection with border guider 58.In this case, optical pickocff 60 need not to detect the edge of the printed material 12 that is positioned at the initial position side.
Therefore, explained later optical pickocff 60 detects the operation of longitudinal edge 80 (in the left side of figure).Optical pickocff 60 has light radiating portion 62 and light receiving part 64.Light radiating portion 62 can be LED for example, illuminates support unit 56 and the printed material 12 that is supported on the support unit 56.Thereby shown in Fig. 3 B, the illuminated area 66 with particular area is formed on the support unit 56 or on printed material 12.Then, the light that shines illuminated area 66 is supported parts 56 or printed material 12 reflections and is received by light receiving part 64.Here, support unit 56 for example is that black thereby its reflectivity are low, thus can according to catoptrical luminous energy judge reflection only from low support unit 56 reflections of reflectivity still from high printed material 12 reflections of reflectivity.Here, because illuminated area 66 has certain area, the luminous energy that light receiving part 64 is received little by little reduces up to illuminated area 66 from shifting out fully near the edge of printed material 12 on the arrival support unit 56.
Fig. 4 is a luminous energy of explaining the light that receives when light receiving part 64 when being measured by electric signal measurement part 150 by being converted into the signal of telecommunication, the curve map of the relation of the electrical signal intensity of the position of optical pickocff 60 (to the distance of initial position) and electric signal measurement part 150.When ink jet printing device 10 uses less, when the precision of optical pickocff 60 does not have variation, when the A direction of optics conduction sensor 60 in Fig. 3 A moves, the signal of telecommunication as shown in Figure 4 along curve A at position X
ALeft side and left side gradually change position X
AIt is the marginal position of printed material 12.Then, arrive the marginal position X of printed material 12 when optical pickocff 60
AThe time, the luminous energy of the light that system controller 140 is received based on light receiving part 64 is measured the signal of telecommunication of electric signal measurement part 150 in advance, and the value of electrical signals of storage this moment in advance, with it as threshold value, thereby, when the signal of telecommunication of the luminous energy of the light that is received based on light receiving part 64 is higher than threshold value, can judge that optical pickocff 60 is positioned on the printed material 12, when the signal of telecommunication is lower than threshold value, can judge that optical pickocff 60 is positioned on the support unit 56.
Yet when the use of ink jet printing device 10 increased, the accuracy of detection of optical pickocff 60 can reduce owing to ink is bonded on the light radiating portion 62 of optical pickocff 60 and the light receiving part 64.For example, under specific operating position, the intensity of the signal of telecommunication of the electric signal measurement part 150 of the luminous energy of the light that is received based on the light receiving part in the optical pickocff 60 64 changes to curve B from curve A as shown in Figure 4.Then, the signal of telecommunication of electric signal measurement part 150 is at the position X of optical pickocff 60 arrival curve B
BEqual preset threshold in the curve A during place.Therefore, along with the reduction with the accuracy of detection of optical pickocff 60 of increasing of the use of ink jet printing device 10, at original edge position X from printed material 12
AInside position, the signal of telecommunication of electric signal measurement part 150 equals above-mentioned threshold value.
In order to address this problem, the retouch 130 of present embodiment is based on the testing result of the operating position correction optical pickocff 60 of ink jet printing device 10.In this case, retouch 130 reads the operating position measurement result from operating position measure portion 110, from correction value storage area 120 read storage to correction value that should operating position, and by increasing this correction value on the position of being detected at optical pickocff 60 with correction position.For example, when the use of ink jet printing device 10 has caused that the signal of telecommunication of electric signal measurement part 150 presents as the curve B among Fig. 4, retouch 130 will be stored in the correction value (X in the correction value storage area 120
A-X
B) be added to the position X of optical pickocff 60
BOn, according to curve B, at position X
BThe signal of telecommunication of place's electric signal measurement part 150 equals threshold value, and judges that revised position is the edge of printed material 12.Therefore, even when the use of ink jet printing device 10 increases and the accuracy of detection of optical pickocff 60 descends as time goes by, whether the existence that also can detect printed material 12 perhaps or rather, detects the edge of printed material 12.It should be noted that, though the situation of optical pickocff 60 when direction A moves explained as an example, but retouch 130 also can adopt the mode identical with optical pickocff 60 used mode when direction A moves to revise when optical pickocff 60 moves along the direction opposite with direction A, this is because along with the precise decreasing of the use optical pickocff 60 of ink jet printing device 10, thereby the intensity of the signal of telecommunication of electric signal measurement part 150 arrives threshold value at the inner side place of printed material 12.
Fig. 5 is the curve map that the correction value example that is stored in the correction value storage area 120 is shown.Fig. 5 shows the use along with ink jet printing device 10, stores the correction value of the width (horizontal direction among Fig. 3 B) of the printed material 12 corresponding with printing number in the correction value storage area 120.It should be noted that the solid line shown in Fig. 5 shows the detection margin of error at the edge of the printed material 12 that is detected when the precision of optical pickocff 60 reduces along with printing increasing of number.The correction value of correction value storage area 120 storages is equal to or greater than error amount.As shown in Figure 5, along with the increase of the use of ink jet printing device 10, correction value storage area 120 storage correction values, this correction value hypothesis printed material 12 is present in the position that the result who is detected than optical pickocff 60 is positioned at printed material 12 more laterals.Therefore, along with increasing of the use of ink jet printing device 10, retouch 130 is present in the hypothesis correction result that the result who is detected than optical pickocff 60 is positioned at the position of printed material 12 more laterals based on printed material 120.Thereby, even the use of ink jet printing device 10 increases and the accuracy of detection reduction of optical pickocff 60 as time goes by, retouch 130 can be based on the testing result of the correction value correction optical pickocff 60 of correction value storage area 120 storage, like this ink jet printing device 10 can detect printed material 12 existence whether, perhaps or rather, can detect the edge of printed material 12.Also have, pattern as shown in Figure 5, the position of optical pickocff 60 is detected by the resolution ratio of encoder 52 with 720dpi, so the correction value of correction value storage area 120 storages is integral multiples of resolution ratio, i.e. the integral multiple of 720dpi.Therefore, under the limit of the detection resolution of optical pickocff 60, ink jet printing device 10 can accurately detect the edge of printed material 12 widths.
Fig. 6 is the curve map that other correction value examples that are stored in correction value storage area 120 are shown.Fig. 6 shows the use along with ink jet printing device 10, the correction value of the length direction (vertical direction among Fig. 3 B) of the printed material 12 of storage and the relation of printing number in the correction value storage area 120.It should be noted that Fig. 6 adopts the mode identical with Fig. 5, represent the detection error amount at the front or rear edge of the printed material 12 that when the precision of optical pickocff 60 reduces along with printing increasing of number, detected with solid line.The correction value of correction value storage area 120 storages is equal to or greater than error amount.Thereby, even the use of ink jet printing device 10 increases and the accuracy of detection reduction of optical pickocff as time goes by, retouch 130 can be based on the testing result of the correction value correction optical pickocff 60 of correction value storage area 120 storage, like this ink jet printing device 10 can accurately detect printed material 12 existence whether, perhaps or rather, can detect the forward and backward edge of printed material 12.Also have, pattern as shown in Figure 6, based on the transmission of subscan drive circuit 154, the position of optical pickocff 60 can be detected with the resolution ratio of 1440dpi.This resolution ratio is the twice of resolution ratio shown in Figure 5.The correction value of correction value storage area 120 storages is that resolution ratio is the integral multiple of 1440dpi.Therefore, under the limit of the detection resolution of optical pickocff 60, ink jet printing device 10 can accurately detect the position at the forward and backward edge of printed material 12.
Below, explain second embodiment of the present invention with reference to Fig. 7 to Figure 10.
Fig. 7 is the block diagram of functional module that the control section 100 of ink jet printing device 10 is shown.In Fig. 7, identical assembly and function adopt same Reference numeral, omit their explanation thus.In the embodiment shown in fig. 7, optical pickocff control circuit 148 has the rating unit 250 that is used to measure the reverberation electrical signal converted that received from light receiving part 64 and the measured signal of telecommunication and threshold value are compared.
Further, retouch 130 is read correction value based on the number of the printed material 12 of operating position measure portion 110 measurements and with reference to correction value storage area 120 from correction value storage area 120, is compared the threshold value that part 250 is quoted with correction.Rating unit 250 is quoted and is corrected the threshold value that part 130 is revised, and the signal of telecommunication of threshold value with the luminous energy of the light that receives based on light receiving part 64 compared.Rating unit 250 is determined scope from the position of playing predetermined surplus based on the edge that revised threshold value detected as the scope of spraying ink, and sends it to system controller 140.Therefore, even under the situation that the accuracy of detection of optical pickocff 60 descends, also can carry out borderless print with less surplus.
Recording medium 160 stores the program that is used to manipulate situation measure portion 110, correction value storage area 120, retouch 130 and rating unit 250.Control section 100 can be manipulated situation measure portion 110, correction value storage area 120, retouch 130 and rating unit 250 by the program that installation is stored in the recording medium 160.As another kind of method, control section 100 can obtain this program by communication line.
Fig. 8 be explain the light that receives when light receiving part 64 luminous energy by converting the signal of telecommunication in rating unit 250 when measured, the curve map of the relation of the electrical signal intensity of the position of optical pickocff 60 (to the distance of initial position) and rating unit 250.When ink jet printing device 10 uses less, when the precision of optical pickocff 60 does not have variation, when the A direction of optical pickocff 60 in Fig. 3 A moves, the signal of telecommunication as shown in Figure 8 along curve A at position X
AAnd arranged on left and right sides gradually change position X
AIt is the marginal portion of printed material 12.Then, move to the marginal position X of printed material 12 when optical pickocff 60
ADuring the position, the luminous energy of the light that system controller 140 is received based on light receiving part 64 is measured the signal of telecommunication of rating unit 250 in advance, and the value of electrical signals of storage this moment in advance, with it as initial threshold, thereby, when the signal of telecommunication of the luminous energy of the light that is received based on light receiving part 64 is higher than initial threshold, can judge that optical pickocff 60 is positioned on the printed material 12, when the signal of telecommunication is lower than initial threshold, can judge that optical pickocff 60 is positioned on the support unit 56.
Yet when the use of ink jet printing device 10 increased, the accuracy of detection of optical pickocff 60 can reduce owing to ink is bonded on the light radiating portion 62 of optical pickocff 60 and the light receiving part 64.For example, under specific operating position, the intensity of the signal of telecommunication of the rating unit 250 of the luminous energy of the light that is received based on the light receiving part in the optical pickocff 60 64 changes to curve B from curve A as shown in Figure 8.Then, the signal of telecommunication of rating unit 250 is at the position X of optical pickocff 60 arrival curve B
BEqual the initial threshold in the curve A during place.Therefore, along with the reduction with the accuracy of detection of optical pickocff 60 of increasing of the use of ink jet printing device 10, at the original edge position X from printed material 12 of printed material 12
AInside position, the signal of telecommunication of rating unit 250 equals above-mentioned initial threshold.
Yet the retouch 130 in the present embodiment is based on the operating position correction threshold of ink jet printing device 10.In this case, retouch 130 is correction threshold along with the increasing of use of PRN device, weakens light intensity.Then, the intensity of the weak more signal of telecommunication that records of luminous intensity is more little, and as shown in Figure 8, so retouch 130 correction thresholds are so that it is than initial threshold H
ALittle.Or rather, retouch 130 is read the operating position that operating position measure portion 110 is measured, and reads the correction value corresponding to the use of PRN device that is stored in the correction value storage area 120, and by from initial threshold H
ADeduct this correction value and come correction threshold.For example, corresponding with the consumption of ink jet printing device 10, the signal of telecommunication of rating unit 250 becomes shown in the curve B among Fig. 8, and retouch 130 is read the correction value that is stored in the correction value storage area 120, and deducts this correction value from initial threshold and draw threshold value H
B
Rating unit 250 is with revised threshold value H
BCompare with the intensity (curve B) of the signal of telecommunication of the light that receives based on light receiving part 64, and judge that the edge of printed material 12 is positioned at and threshold value H
BThe position X that intersects
AThe place.Therefore, even under the situation that use increases and the accuracy of detection of optical pickocff 60 changes as time goes by of ink jet printing device 10, whether the existence that ink jet printing device 10 also can detect printed material 12 perhaps exactly, can detect the edge of printed material 12.
It should be noted that, though the situation of optical pickocff 60 when direction A moves explained as an example, but retouch 130 also can adopt the mode identical with optical pickocff 60 used mode when direction A moves to revise when optical pickocff 60 moves along the direction opposite with direction A, this is because of the use along with ink jet printing device 10, the precise decreasing of optical pickocff 60, the intensity of the signal of telecommunication of rating unit 250 arrives threshold value in the interior position of printed material 12.
Fig. 9 is the curve map that the correction value example that is stored in the correction value storage area 120 is shown.Fig. 9 shows the use along with ink jet printing device 10, the correction value of the width (horizontal direction among Fig. 3 B) of the printed material 12 of storage and the relation of printing number in the correction value storage area 120.It should be noted that the detection error amount at the edge of the printed material 12 that is detected when precision that the solid line shown in Fig. 9 is represented optical pickocff 60 reduces along with printing increasing of number.The intensity of the signal of telecommunication of correction value storage area 120 storages is equal to or greater than error amount.As shown in Figure 9, along with the increase of the use of ink jet printing device 10, correction value storage area 120 is stored in the correction value of the adjustment in direction threshold value that luminous intensity weakens.
Therefore, the use of ink jet printing device 10 is many more, and the value that is stored in the correction value storage area 120 is big more, and this is because this value is with from initial threshold H
AIn the correction value that deducts.Thereby whether rating unit 250 exists based on lower threshold decision printed material 12 when the use of ink jet printing device 10 increases by with reference to retouch 130 revised threshold values.Thereby, even the use of ink jet printing device 10 increases and the accuracy of detection variation of optical pickocff 60 as time goes by, retouch 130 also can be based on correction value storage area 120 correction thresholds, like this ink jet printing device 10 can detect printed material 12 existence whether, in other words, can detect the edge of printed material 12.Also have, pattern as shown in Figure 9, the position of optical pickocff 60 can be detected with the resolution ratio of 720dpi by encoder 52, so the correction value of correction value storage area 120 storages is that resolution ratio is the integral multiple of 720dpi.Therefore, under the limit of the detection resolution of optical pickocff 60, ink jet printing device 10 can accurately detect the edge of printed material 12 broad ways.
Figure 10 illustrates the curve map that is stored in other correction value examples in the correction value storage area 120.Figure 10 shows the use along with ink jet printing device 10, the correction value of the length direction (vertical direction among Fig. 3 B) of the printed material 12 of storage and the relation of printing number in the correction value storage area 120.It should be noted that Figure 10 adopts the mode identical with Fig. 9, represent the detection error amount at the front or rear edge of the printed material 12 that when the precision of optical pickocff 60 reduces along with printing increasing of number, detected with solid line.The electrical signal intensity of correction value storage area 120 storages is equal to or greater than error amount.Thereby along with the use of ink jet printing device 10 increases, whether rating unit 250 exists based on low threshold decision printed material 12 by the threshold value of revising with reference to retouch 130.Therefore, even the use of ink jet printing device 10 increases and the accuracy of detection decline of optical pickocff 60 as time goes by, retouch 130 also can be based on correction value storage area 120 correction thresholds, like this ink jet printing device 10 can accurately detect printed material 12 existence whether, can detect the forward and backward edge of printed material 12 in other words.
Also have, pattern as shown in figure 10, based on the transmission of subscan drive circuit 154, the position of optical pickocff 60 can be detected with the resolution ratio of 1440dpi.This resolution ratio is the twice of resolution ratio shown in Figure 9.Correction value storage area 120 based on the proportional least unit of this resolution ratio storage correction value, that is, and based on half least unit storage correction value of least unit shown in Figure 9.Therefore, under the limit of the detection resolution of optical pickocff 60, ink jet printing device 10 can accurately detect the position at the forward and backward edge of printed material 12.
Like this, arrive embodiment shown in Figure 10 according to Fig. 1, even when the use of PRN device increased and the accuracy of detection of optical pickocff 60 changes as time goes by, ink jet printing device 10 also can accurately detect printed material 12 and whether exist, or says so and can detect the edge of printed material 12.Therefore, when carrying out borderless print on printed material 12, the surplus that ink sprays and flow out printed material 12 edges can be set to less.Therefore, can suppress by staining that the ink droplet causes.The accuracy of detection that stains and keep optical pickocff 60 that can also suppress optical pickocff 60.Also have, because allow to be provided with print area self less, the printing of the image of exaggerated scale is under an embargo, and overflow printing material 12 and the image section that can not print can be reduced.It should be noted that the foregoing description explained the correction of the left hand edge of printed material, same makeover process can also be used to revise the right hand edge of printed material 12.
At Fig. 1 in embodiment shown in Figure 10, operating position measure portion 110 is calculated the number of printed material 12, the correction value storage area 120 storages correction value corresponding with the number of printed material 12, retouch 130 is revised based on the number of the printed material 12 that is calculated by operating position measure portion 110.Yet correction can be carried out based on other yardstick as the operating position of ink jet printing device 10.For example, the operating position of ink jet printing device 10 can calculating based on the ink ejection amount of record head 54 ejection.In this case, operating position measure portion 110 can the surveying record head quantity of ink of 54 ejections, correction value storage area 120 can be stored the corresponding correction value of quantity of ink with record head 54 ejection, and the result that ink ejection amount that retouch 130 can be sprayed based on record head 54 and operating position measure portion 110 are measured revises.Also have, operating position measure portion 110 can be based on the emitted dose of less Text Mode of the emitted dose of expression ink or ink the printing model of bigger image model calculate the operating position of ink jet printing device 10.They allow to revise the result whether detection printed material 12 exists based on the optical pickocff 60 of being stained by ink, and it is a factor that reduces optical pickocff 60 accuracy of detection that ink is stained.Also have, operating position measure portion 110 can be calculated the operating position of PRN device by the 62 radiative times of light radiating portion in the measurement optical pickocff 60.At this moment, operating position measure portion 110 can calculate the photoemissive time by the time of measuring power connection.They allow the decline based on the light emission measure, revise the detection whether printed material 12 exists, and the decline of light emission measure is the factor that optical pickocff 60 accuracy of detection descend.
Though it is noted that and adopt ink jet printing device 10 to make an explanation as an example of liquid injection device, the liquid injection device among the present invention is not limited to ink jet printing device 10.Other example of liquid injection device, as be used for producing the pigment spraying equipment of the colour filter that LCD uses, produce the electrode forming device (electrodeforming apparatus) of FED (surface launching display) etc. and be used to produce the sample spraying equipment of biological substrate.
Though the present invention is described by the mode of embodiment, it will be appreciated by those skilled in the art that under the situation that does not deviate from spirit and scope of the invention the present invention can have multiple variation and substitute.
The qualification of claims according to the present invention, obviously, the embodiment with above-mentioned modification also belongs to scope of the present invention.
Claims (2)
1. one kind is used to support printed material and injects liquid into liquid injection device on this printed material, comprising:
Be used to detect the whether supported optical pickocff of printed material;
Measure the operating position measure portion of described liquid injection device operating position; With
Retouch, it is revised the deterioration of described optical pickocff based on the measured described operating position of described operating position measure portion.
2. a liquid that is used to support printed material and injects liquid on this printed material sprays
Equipment comprises:
Be used to detect the whether supported optical pickocff of printed material;
Measure the operating position measure portion of described liquid injection device operating position; With
Retouch, it is used for accuracy of detection to optical pickocff as time goes by and changes and revise.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005053571 | 2005-02-28 | ||
| JP2005053571A JP4534798B2 (en) | 2005-02-28 | 2005-02-28 | Liquid ejecting apparatus, control method and program |
| JP2005-053571 | 2005-02-28 | ||
| JP2005072782 | 2005-03-15 | ||
| JP2005-072782 | 2005-03-15 | ||
| JP2005072782A JP2006255930A (en) | 2005-03-15 | 2005-03-15 | Liquid jetting apparatus, controlling method and program |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100916507A Division CN100457457C (en) | 2005-02-28 | 2006-02-28 | Liquid ejecting apparatus and control method and program of the same |
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| Publication Number | Publication Date |
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| CN101439621A true CN101439621A (en) | 2009-05-27 |
| CN101439621B CN101439621B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101849119A Expired - Fee Related CN101439621B (en) | 2005-02-28 | 2006-02-28 | Liquid ejecting apparatus |
| CNB2006100916507A Expired - Fee Related CN100457457C (en) | 2005-02-28 | 2006-02-28 | Liquid ejecting apparatus and control method and program of the same |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100916507A Expired - Fee Related CN100457457C (en) | 2005-02-28 | 2006-02-28 | Liquid ejecting apparatus and control method and program of the same |
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| Country | Link |
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| JP (1) | JP4534798B2 (en) |
| CN (2) | CN101439621B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274553B (en) * | 2007-03-30 | 2010-06-23 | 兄弟工业株式会社 | Image recording device and image recording method |
| JP4985224B2 (en) * | 2007-08-23 | 2012-07-25 | セイコーエプソン株式会社 | Recording device |
| JP2013043423A (en) * | 2011-08-26 | 2013-03-04 | Seiko Epson Corp | Liquid ejecting apparatus |
| JP6007514B2 (en) * | 2012-03-01 | 2016-10-12 | セイコーエプソン株式会社 | Liquid ejecting apparatus and medium end position detecting method in liquid ejecting apparatus |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06238906A (en) * | 1993-02-15 | 1994-08-30 | Canon Inc | Ink-jet recording device |
| JPH1175061A (en) * | 1997-08-29 | 1999-03-16 | Canon Inc | Image reader and image reading method |
| US6804474B2 (en) * | 2001-07-24 | 2004-10-12 | Canon Kabushiki Kaisha | Image forming apparatus |
| JP4630498B2 (en) * | 2001-07-27 | 2011-02-09 | キヤノン株式会社 | Medium detection apparatus and image forming apparatus including medium detection apparatus |
| JP4240946B2 (en) * | 2001-08-10 | 2009-03-18 | キヤノン株式会社 | Inkjet recording method and inkjet recording apparatus |
| JP3940897B2 (en) * | 2002-03-07 | 2007-07-04 | セイコーエプソン株式会社 | Inkjet recording device |
| JP2003291363A (en) * | 2002-04-01 | 2003-10-14 | Canon Inc | Printer and method for replenishing ink thereof |
| CN1238197C (en) * | 2002-04-16 | 2006-01-25 | 精工爱普生株式会社 | Ink cartridge detector, ink-jet printer provided with same and ink cartridge detected thereby |
| JP4306312B2 (en) * | 2003-04-15 | 2009-07-29 | セイコーエプソン株式会社 | Liquid ejection apparatus, program, liquid ejection method, and printing system |
| JP3982455B2 (en) * | 2003-05-30 | 2007-09-26 | セイコーエプソン株式会社 | Liquid ejection apparatus, printing apparatus, adjustment method, and printing system |
| JP4779317B2 (en) * | 2003-07-09 | 2011-09-28 | ブラザー工業株式会社 | Inkjet recording apparatus and ink cartridge |
| US7077492B2 (en) * | 2003-11-26 | 2006-07-18 | Fuji Xerox Co., Ltd. | Method and device for optical sensor compensation, and apparatus incorporating the same |
-
2005
- 2005-02-28 JP JP2005053571A patent/JP4534798B2/en not_active Expired - Fee Related
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2006
- 2006-02-28 CN CN2008101849119A patent/CN101439621B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101439621B (en) | 2011-08-03 |
| JP2006231871A (en) | 2006-09-07 |
| JP4534798B2 (en) | 2010-09-01 |
| CN1865004A (en) | 2006-11-22 |
| CN100457457C (en) | 2009-02-04 |
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