CN1960879A - Ink supplying device, recording device, ink supplying method and recording method - Google Patents
Ink supplying device, recording device, ink supplying method and recording method Download PDFInfo
- Publication number
- CN1960879A CN1960879A CNA2005800178802A CN200580017880A CN1960879A CN 1960879 A CN1960879 A CN 1960879A CN A2005800178802 A CNA2005800178802 A CN A2005800178802A CN 200580017880 A CN200580017880 A CN 200580017880A CN 1960879 A CN1960879 A CN 1960879A
- Authority
- CN
- China
- Prior art keywords
- ink
- printhead
- negative pressure
- pump
- feeding device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Ink Jet (AREA)
Abstract
Fluctuation of negative pressure in a recording head is suppressed to be small by positively controlling ink supplying pressure. A pump (36) and a valve (35) are provided in an ink communicating path between an ink tank (40) and a recording head (811). The negative pressure applied on the recording head (811) is adjusted by controlling the pump (36) and the valve (35).
Description
Technical field
The present invention relates to a kind of application of negative pressure ink supply and give the ink-feeding device and the ink supply method of printhead, and a kind of PRN device and Method of printing that uses this printhead prints image.
Background technology
Can use the little printhead of nozzle to form high-definition picture by spray the ink jet printing device that China ink forms image to the print media from printhead with a plurality of high density arrangements.This ink jet printing device can also be realized colour print with relatively cheap, compact structure, and this structure comprises a plurality of printheads and the China ink of several different colours is provided for each printhead.Therefore ink jet printing device is used to various commercial or home image output devices at present, as printer, facsimile machine, duplicator.
In this ink jet printing device, it is important with the ink ejection operation of stablizing printhead that the China ink in the printhead is remained constant negative pressure.For this reason, common way is that negative pressure generating unit (means) is set in ink feeding system, and will supply to printhead by the China ink that the negative pressure generating unit gives negative pressure.
A kind of traditional negative pressure generating unit is to utilize the capillary attraction that is installed in the spongy black absorber in the ink container to produce negative pressure (for example, patent document 1).
Another example makes at least a portion of ink container be formed by flexible member, and by such as biasing such as spring device with flexible member to the ink container external bias, ink container inside is remained negative pressure (for example, patent document 2).
Another example has the ink container that is arranged in the position that is lower than printhead, and the utilized head difference applies negative pressure (for example, patent document 3) to China ink.
Pressure reduction between the negative pressure that the China ink that is applied constant negative pressure by the negative pressure generating unit increases by carrying out along with ink-jet in the negative pressure of China ink and the printhead is fed into printhead, as being introduced into printhead.Therefore printhead inside is remained constant negative pressure.
Patent document 1: Japanese kokai publication hei 07-068776 communique
Patent document 2: TOHKEMY 2001-315350 communique
Patent document 3: Japanese kokai publication hei 06-183018 communique
Summary of the invention
Ink feeding system with above-mentioned negative pressure generating unit uses in the printhead the caused pressure reduction of negative pressure that carries out along with ink-jet and increase that China ink is introduced printhead from ink container.
Yet, when the China ink consumption of printhead time per unit sharply increases, have ink supply not meet the demands and the possibility of allowing the negative pressure in the printhead to increase.On the other hand, if the China ink consumption of time per unit sharply descends, the negative pressure in the printhead may be reduced by the inertia (inertia) of China ink.Negative pressure variation in the printhead will make the ink ejection operation instability of printhead probably, reduce the quality of print image.Especially, in the industrial PRN device of flying print image, instantaneous China ink consumption changes significantly on the large scale print media, so the negative pressure in the printhead is easy to change.Therefore, in order to satisfy the requirement of high print quality, it is important making the negative pressure variation minimum in the printhead.
The purpose of this invention is to provide a kind of ink-feeding device, a kind of PRN device, a kind of ink supply method and a kind of Method of printing, can make negative pressure variation minimum in the printhead by (positively) control ink supply pressure initiatively.
Ink-feeding device of the present invention is installed in the black path that ink container is communicated with printhead, this ink-feeding device comprises negative pressure applying unit and control part, this negative pressure applying unit applies adjustable negative pressure to printhead, and this control part control negative pressure applying unit is applied to the negative pressure of printhead with adjusting.
PRN device of the present invention can use for the printhead that China ink is arranged and come print image, and this PRN device is included as the ink-feeding device of printhead ink supply.
Of the present invention being used for uses the negative pressure applying unit that is installed in the black path that ink container is communicated with printhead to come printhead is applied adjustable negative pressure from ink container to the ink supply method of printhead ink supply, controls this negative pressure applying unit so that will be applied to the negative pressure of printhead remain in the predetermined scope during the printing of use printhead.
The Method of printing that use of the present invention is supplied with the printhead prints image of China ink from ink container uses the negative pressure applying unit that is installed in the black path that ink container is communicated with printhead to come printhead is applied adjustable negative pressure, controls this negative pressure applying unit so that will be applied to the negative pressure of printhead remain in the predetermined scope during the printing of use printhead.
Utilize the present invention, can minimize the negative pressure variation in the printhead by the negative pressure that ACTIVE CONTROL is applied to printhead, thereby can stablize the printing of using printhead, form high quality images.
Description of drawings
Fig. 1 is the block diagram that the summary of the image formation system that has PRN device in the first embodiment of the invention is shown.
Fig. 2 is the schematic isometric of summary structure that the image formation system of Fig. 1 is shown.
Fig. 3 is the configuration block diagram that the control system of the PRN device that is used for Fig. 1 is shown.
Fig. 4 is the configuration block diagram of control system that the medium conveying apparatus of the image formation system that is used for Fig. 1 is shown.
Fig. 5 is the flow chart of the sequence of operation between information processor, PRN device and the medium conveying apparatus that the image formation system of Fig. 1 is shown.
Fig. 6 is the configuration block diagram of control system that is used for a plurality of PRN devices of Fig. 1.
Fig. 7 is the schematic diagram of configuration that the ink feeding system of a plurality of PRN devices that are used for Fig. 1 is shown.
Fig. 8 is the schematic diagram that is illustrated in the position relation between the essential part of ink system in one of the PRN device of Fig. 1.
Fig. 9 is the schematic diagram of configuration that the ink system of a printhead of PRN device that is used for Fig. 1 is shown.
Figure 10 is the key diagram that the black path in the printhead of Fig. 9 is shown.
Figure 11 A is the schematic diagram of operation that the negative pressure chamber of Fig. 9 is shown.
Figure 11 B is the schematic diagram of operation that the negative pressure chamber of Fig. 9 is shown.
Figure 11 C is the schematic diagram of operation that the negative pressure chamber of Fig. 9 is shown.
Figure 12 A illustrates the example structure of valve of Fig. 9 and the schematic diagram of operation thereof.
Figure 12 B illustrates the example structure of valve of Fig. 9 and the schematic diagram of operation thereof.
Figure 13 is the schematic diagram of example structure that the off gas system of Fig. 9 is shown.
Figure 14 A is the schematic diagram of joint (joint) operation that Fig. 9 is shown.
Figure 14 B is the schematic diagram that the bonding operation of Fig. 9 is shown.
Figure 15 A is the schematic diagram of operation that the main ink container of Fig. 2 is shown.
Figure 15 B is the schematic diagram of operation that the main ink container of Fig. 2 is shown.
Figure 16 A is the schematic diagram that the operation of the ink system of Fig. 9 when dispatching from the factory (shipping) is shown.
Figure 16 B is the schematic diagram that the operation of the ink system of Fig. 9 when dispatching from the factory is shown.
Figure 16 C is the schematic diagram that the operation of the ink system of Fig. 9 when dispatching from the factory is shown.
Figure 17 A is the schematic diagram that the operation of the ink system of Fig. 9 when bringing into use device is shown.
Figure 17 B is the schematic diagram that the operation of the ink system of Fig. 9 when bringing into use device is shown.
Figure 17 C is the schematic diagram that the operation of the ink system of Fig. 9 when bringing into use device is shown.
Figure 18 A is the schematic diagram that is illustrated in the operation of the ink system of printing waiting time Fig. 9.
Figure 18 B is the schematic diagram that is illustrated in the operation of the ink system of printing waiting time Fig. 9.
Figure 18 C is the schematic diagram that is illustrated in the operation of the ink system of printing waiting time Fig. 9.
Figure 19 A is the schematic diagram that is illustrated in the operation of the ink system of Fig. 9 during the printing.
Figure 19 B is the schematic diagram that is illustrated in the operation of the ink system of Fig. 9 during the printing.
Figure 19 C is the schematic diagram that is illustrated in the operation of the ink system of Fig. 9 during the printing.
Figure 20 A is the schematic diagram that is illustrated in the operation of the ink system of Fig. 9 during the attended operation.
Figure 20 B is the schematic diagram that is illustrated in the operation of the ink system of Fig. 9 during the attended operation.
Figure 20 C is the schematic diagram that is illustrated in the operation of the ink system of Fig. 9 during the attended operation.
Figure 21 A is the schematic diagram of the operation of the ink system of Fig. 9 when ink supply is shown.
Figure 21 B is the schematic diagram of the operation of the ink system of Fig. 9 when ink supply is shown.
Figure 22 is the sequential chart of operation that the ink system of Fig. 9 is shown.
Figure 23 illustrates in the embodiment of the invention about the negative pressure control of the output of working pressure sensor and uses the circuit block diagram of the pump control of PWM chopper (chopper).
Figure 24 A is the conversion table that the relation between AD converter reading and the PWM value of representing in the embodiment of the invention is shown.
Figure 24 B is the conversion table that the relation between AD converter reading and the PWM value of representing in the embodiment of the invention is shown.
Figure 25 A illustrates pressure controlled flow chart when being used in combination valve in the embodiment of the invention.
Figure 25 B illustrates to be used to drive the solenoidal PWM value conversion table that is used for operating valve.
Figure 26 is the block diagram that the control system of PRN device in the second embodiment of the invention is shown.
Figure 27 illustrates the schematic diagram that is used for the ink system of a printhead in the PRN device of Figure 26.
Figure 28 is the schematic diagram that the ink supply path of the printhead that connects Figure 27 and ink container is shown.
Figure 29 is the time sequential routine figure that the ink system of Figure 27 is shown.
Figure 30 is the flow chart that the example control program of the ink system that is used for Figure 27 is shown.
Figure 31 illustrates the operation chart of when dispatching from the factory China ink being injected the ink system of Fig. 7.
Figure 32 is the schematic diagram that the degas operation of the ink system of Figure 27 when dispatching from the factory is shown.
Figure 33 is the schematic diagram of recovery (recovery) operation that the ink system of Figure 27 when dispatching from the factory is shown.
Figure 34 is the schematic diagram of the recovery operation of the ink system of Figure 27 when erection unit is shown.
Figure 35 is illustrated in the operation chart of printing the ink system that waits the Figure 27 that bides one's time.
Figure 36 is the operation chart that the ink system of Figure 27 when printing is shown.
The summary configuration of ink system among Figure 37 A explanation first embodiment of the invention and second embodiment.
The summary allocation plan of ink system in Figure 37 B explanation third embodiment of the invention.
Figure 38 is the summary cutaway view that the pump that uses in the third embodiment of the invention is shown.
Figure 39 is the stereogram that illustrates as the print module of fourth embodiment of the invention.
The specific embodiment
Now, embodiments of the invention will be described with reference to the accompanying drawings.
[first embodiment]
Present embodiment represents that PRN device is included in the situation in as depicted in figs. 1 and 2 the image formation system.
(summary of image formation system)
Fig. 1 and Fig. 2 are respectively block diagram and the schematic isometric that the summary configuration of image formation system is shown.The printer of this example compound (composite) system comprises information processor 100 and image processing system 200.This image processing system 200 has medium conveying apparatus 117 and medium conveying apparatus 117.This printer complex has a plurality of independently engines or printer unit (also being known as " PRN device " or " printer ") 116-1 to 116-5.
In Fig. 1, CPU 101 is CPU, carries out the total system control to information processor 100.In information processor 100, carried out by being used to produce by the CPU 101 of operating system (OS) control with the processing of the application program definition of edited image data, by the processing of the image partition program definition of present embodiment, by the processing of print routine (printed driver) definition of a plurality of printer unit 116-1 to 116-5 and by the processing of control program (utilizing Fig. 5 the to illustrate after a while) definition of medium conveying apparatus 117.
Basic input output system), the initialize routine and the self-diagnostic program that start when system power supply is connected the program that ROM (read-only storage) 112 storage control connects by the input/output circuitry (not shown) (BIOS: as input/output devices such as keyboard 114, mouse 115, CDD 111 and FDD 110.EPROM (electrically erasable ROM) the 113rd is used for storing the nonvolatile storage of the parameter of various permanent uses.
Video (video) controller 106 constantly periodically reads the RGB video data that writes video-ram (VRAM) 107, and the RGB video data constantly is sent to as CRT, LCD and PDP displays 108 such as (Plasmia indicating panels) as the screen-refresh signal.
The communication interface 109 of printer unit 116-1 to 116-5 is connected with pci bus, can use all to conform with IEEE 1284 standards, and for example, two-way Centrino (centronix) interface, USB (USB) and hub (hub) are connected.In Fig. 1, pci bus is connected to hub 140 by communication interface 109, and hub 140 is connected to each printer unit 116-1 to 116-5 and medium conveying apparatus 117 then.Although present embodiment uses line style communication interface 109 is arranged, also can use communication interface as other types such as WLANs.
Print routine (printed driver) has: the method for setting the quantity (corresponding to the number of partitions that one page image is divided) of the printer unit 116-1 to 116-5 that is connected to information processor 100, give the method (utilizing Fig. 4 to illustrate after a while) of each printer unit 116-1 to 116-5 range of distribution (division width), and which of one page partly is assigned to the method (referring to Fig. 3) of which printer unit.Based on the setting of making by these establishing methods, divide one page image, corresponding divided image data is sent to the printer unit 116-1 to 116-5 that each is used to print.
As previously mentioned, print routine produces the print data that is used for printer unit 116-1 to 116-5, and these data are sent to the corresponding printer unit.Therefore, for fast processing, the print data in print routine itself or the print routine produces processing and print data transmission processing can parallel running (multiprocessing (multiprocess), multithreading (multithread)).
Refer again to Fig. 2, information processor 100 is connected to printer unit 116-1 to 116-5 and medium conveying apparatus 117 by hub 140, to transmit print data, operation beginning/END instruction etc.Printer unit 116-1 to 116-5 is (following by Reference numeral 116 expressions, unless specifically note) in each and medium conveying apparatus 117 between also be connected, operate synchronous signal with the detection signal that transmits expression print media 206 front ends, the printing (ink-jet) that is used to set the signal of printing initiating position and be used to make medium transport speed and each printer unit.
Print in order on print media 206, to carry out continuous full color, each printer unit 116 is installed four printhead 811Y, 811M, 811C and the 811K (following by Reference numeral 811 expressions, unless specifically note) that spray yellow (Y), magenta (M), cyan (C) and black (K) China ink respectively.Color ink printhead in each printer unit is identical along putting in order of the throughput direction of print media 206, and therefore, the order of color stack is also identical.On the width (perpendicular to the direction of medium transport direction) of print media, the injection nozzle of each printhead has been arranged (about 100mm (for reference)) more than 4 inches with the density of 600dpi (point/inch (for reference)).Therefore, the printer unit 116-1 to 116-5 of combination can cover the maximum printing width of about 500mm.
From black source, promptly ink container 203Y, 203M, 203C and 203K supply with corresponding color ink to printhead 811Y, 811M, 811C and 811K in each printer unit 116 by dedicated pipe 204.
(control system of printer unit)
Fig. 3 illustrates the example arrangement of the control system in each printer unit 116.
Among the figure, 800 expression CPU, this CPU carry out the integral body control of printer unit 116 after a while with reference to the program of the handling procedure of figure 5 explanation according to definition.Reference numeral 803 is the ROM of storage program and fixed data; 805 are the RAM as working storage; And 814 be EEPROM, even its power supply when printer unit also keeps the CPU 800 employed parameters that are used to control when disconnecting.
These are characteristic members of the present invention, will be described more specifically after a while.
When not using printer unit 116, driving is added a cover motor 809 capping mechanism is shifted to printhead 811Y, 811M, 811C, 811K to add a cover.When the view data that will print is mapped among the VRAM 801, driving is added a cover motor 809 capping mechanism is removed to uncap from printhead 811Y, 811M, 811C, 811K, and printer unit is waited for the print start signal from medium conveying apparatus 117 of explanation after a while.
(configuration of conveyer and control system)
With reference to figure 2, size is suitable for carrying the medium conveying apparatus 117 of print media big on the width of print media, has arbitrary dimension on throughput direction.All printheads 811 that medium platform (media stage) 202 are set to guarantee printer unit 116-1 to 116-5 equate as far as possible with gap between the print surface of print media 206.Used print media thickness is different, and the parts that therefore can add the tight exposure level that is used to improve print media and medium platform 202 are so that remain on the print surface of even ground paper and the gap between the printhead 811 in the preset range.Carry motor 205 to drive a row conveying roller 205A, with the tight print media that contacts of upper surface of feeding and medium platform 202.
Fig. 4 illustrates the example arrangement of the control system of medium conveying apparatus 117.
Among the figure, Reference numeral 901 expression CPU, this CPU carries out integral body control to medium conveying apparatus with reference to the program of the handling procedure of figure 5 explanations after a while according to definition.Reference numeral 903 is ROM of storage program and fixed data; The 904th, as the RAM of working storage.
Reference numeral 902 is the interfaces that medium conveying apparatus 117 are connected to information processor 100.Reference numeral 905 persons of being to use import the input block of his or his instruction or other input to image processing system, also are the guidance panels with the display unit that is used for predetermined indication.In this example, this unit is installed on the medium conveying apparatus.
Reference numeral 908 is suction motor of operated vacuum pumps.Vavuum pump forms the non-printing surface (back side) of maintenance print media and an example of the tight parts that contact of upper surface of medium platform 202.More specifically, form a large amount of pores that extend to its feed surface from the bottom of medium platform 202 in medium platform 202, operated vacuum pumps keeps closely contacting with medium platform 202 to be made print media by the suction that applies by this pore.When the conveying initiation command that receives by interface 902 from information processor 100, start suction motor 908, print media 206 is moved to the upper surface of medium platform 202 by suction.
Reference numeral 907 is the driver element of operation suction motor 908 and other associative operation unit.Reference numeral 909 is for carrying the driver element of motor 205.
Logic circuit 912 forms the servo-drive system that receives from being installed in the output of carrying the rotary encoder 910 on the motor 205, carries out to carrying the FEEDBACK CONTROL of motor 205, so that with constant speed feeding print media.Can set transporting velocity arbitrarily by the velocity amplitude that in logic circuit 912, writes by CPU 901.Rotary encoder 910 can with the capable coaxial arrangement of conveying roller 205A, and be not installed on the axle of carrying motor 205.
Output from medium sensor 911 also offers logic circuit 912, and this medium sensor 911 is arranged on the moment of the upstream of print position with the point of the front end arrival proximity printing starting position of detection print media 206 along throughput direction.According to the distance of front position to each printer unit along throughput direction of the print media that is detected from medium sensor 911, logic circuit 912 is to the suitable print command signal of each printer unit output.In the present embodiment, because printer unit 116-1 to 116-5 lines up two row along throughput direction as illustrated in fig. 2, promptly, printer unit 116-1,116-3,116-5 are in line at the upstream side along throughput direction, and printer unit 116-2,116-4 are in line in the downstream, so logic circuit 912 sends two print command signals 914,915.Consider the error of the installation site of printer unit, can independently carry out the print start signal 914 of each printer unit or 915 correction according to the physics from medium sensor 911 to each printer unit (physical) distance.
Logic circuit 912 suitably is converted to print media P-pulse 913 with the output of rotary encoder 910.Synchronous with this P-pulse 913, each printer unit is carried out printing.The resolution capability of P-pulse can come to determine as required.For example, can be set as with a plurality of print lines and equate.
In addition, the structure of the print media supply unit in the medium conveying apparatus 117 is not limited to this structure with mounting medium platform 202 shown in Figure 2.For example, can realize that print media carries by feeding print media on cycloconveyor belt, this endless belt conveyer be wound on be installed on print position along throughput direction the reel of upstream and downstream to last, and drive by rotating this reel.The supply unit of this structure can feeding cut paper (cut paper) type and the print media of continuous slice (continuous sheet) type.
(the operation summary of image formation system)
Fig. 5 illustrates the printer unit 116 of information processor 100, printer complex 400 and the sequence of operation between the medium conveying apparatus 117.
In order to carry out printing, information processor 100 produces the print data of division and they is sent to relevant printer unit (step S1001).According to the data that receive, each printer unit 116 is opened the lid of printhead 811, and data are mapped to (step S1041) on the VRAM 801.When all printer unit 116-1 to 116-5 had finished the data reception, information processor 100 sent to medium conveying apparatus 117 and carries initiation commands (step S1002).
Medium conveying apparatus 117 at first drives suction motor 908 (step S1061), prepares for moving print media 206 to medium platform 202 by suction.Then, medium conveying apparatus 117 drives and carries motor 205 with beginning feeding print media 206 (step S1062).When the front end that detects medium (step S1063), medium conveying apparatus 117 sends print start signals 914,915 and P-pulse 913 to printer unit 116-1 to 116-5 (step S1064).As previously mentioned, send print start signal according to distance from medium sensor 911 to each printer unit.
When the printing (step S1042) of printer unit 116 when finishing, printer unit 116 will be printed completion status and send to information processor 100 (step S1043), finish processing.At this moment, each printer unit covers the dry and obstruction of its printhead 811 to prevent that nozzle (inkjet mouth) is possible by unshowned capping mechanism.
Finish with print media 206 with the work printing and to discharge (step S1065-is) from medium platform 202, medium conveying apparatus 117 will carry completion status to send to information processor 100 (step S1066).Then, medium conveying apparatus 117 stops suction motor 908 and carries motor 205 (step S1067, S1068) and finish its operation.
(signal system of printer complex)
Fig. 6 illustrates the example of the signal system of the printer unit 116-1 to 116-5 that constitutes printer complex.Each the signal system that is connected among the printer unit 116-1 to 116-5 mainly is divided into two systems.The print data (comprising operation beginning and the finish command) that the division that provides from information processor 100 participate in to be provided, and another participates in transmitting regularly definition signal (comprising print start signal and P-pulse) of the printing that provides from medium conveying apparatus 117.
In example shown in Figure 6, the print data transfer system of division has hub 140, and this hub 140 is relaying (relay) data between information processor 100 and printer unit 116-1 to 116-5.For example, hub 140 is connected to information processor 100 by 100BASE-T AN connector/cable 142, and for example is connected among the printer unit 116-1 to 116-5 each by 10base-T AN connector/cable 144.
In the example of Fig. 6, printing regularly, the definition signal transfer system has the control circuit 150 of transmission and synchronous circuit 160.These circuit can be used as the circuit of the logic circuit 912 of composition diagram 4.Transmit (transfer) control circuit 150 and be installed in output ENCODER and the print media front-end detection output TOF that carries the rotary encoder 910 on the motor 205 for synchronous circuit 160 provides.
In case receive print command signal (TOF-IN1) 914, begin along throughput direction in printer unit 116-1, the 116-3 of print media upstream side, the printing of 116-5.Print command signal (TOF-IN1) the 914th has the time delayed signal with the corresponding time-delay of distance of position from medium sensor 911 to these printer units.If the distance from medium sensor 911 to these printer units is zero, then print command signal 914 almost sends simultaneously with front-end detection output TOF.
On the other hand, in case receive print command signal (TOF-IN2) 915, beginning is arranged in the printer unit 116-2 in print media downstream, the printing of 116-4 along throughput direction.Print command signal (TOF-IN2) the 915th has the time delayed signal with the corresponding time-delay of distance from medium sensor 911 to these printer unit positions.In the present embodiment, the distance from medium sensor 911 to these printer units is made as 450mm.Therefore, if P-pulse 913 or synchronizing signal (Hsync) are 300 pulses of per inch (25.4mm) print media transmitting range, then after front-end detection output TOF, send print command signal 915 with the time-delay of 5,315 pulses.
For to along the print position of each printer unit of medium transport direction or consider that the situations that printer unit is not arranged in two row carry out fine correction, print command signal will be offered each printer unit independently.
As can be seen from Figure 6, each printer unit 116-1 to 116-5 receives the print data of dividing from information processor 100, carries out printing independently of one another according to the printing timing definition signal that is provided by medium conveying apparatus 117.Promptly, each printer unit 116-1 to 116-5 is complete circuit aspect signal system, make print data and print regularly and be not sent to another printer unit, and make each printer unit have and come the parts (means) (shift register and latch circuit) of the nozzle arrangement data in each printhead and with the specific timing ink-jet for printhead 811Y-811K from a printer unit.That is to say that printer unit 116-1 to 116-5 has identical hardware and operates under identical software; The operation of a printer unit does not directly influence the operation of another printer unit; And a complete image is printed in their cooperations.
(summary of ink system)
But the printer unit 116-1 to 116-5 in this example is the printer of independent operation, and ink system is also separate, and this ink system comprises the ink feeding system and the recovery system of the printhead 811 that is used for each printer unit.
Fig. 7 illustrates the particularly schematic diagram of the configuration of ink feeding system of ink system.As shown in the figure, color ink from black source or ink container (also being known as primary tank) 203Y, 203M, 203C, 203K be distributed to printhead 811Y, 811M, 811C, the 811K of each printer unit 116 by dedicated pipe 204Y, 204M, 204C, 204K.Can finish ink supply by one of two kinds of patterns: a kind of is always to set up with the fluid of ink container to be communicated with; Another kind is to have only to set up when flowing of the China ink in the unit is low with the fluid of the ink donor unit of each printhead to be communicated with, thus the ink supply at intermittence.
The recovery system of present embodiment has with the nozzle of printhead 811 and forms the lid that contact of surface, receives the China ink of forcing discharge from nozzle.Recovery system also circulates the China ink that receives to utilize again.
Lid is disposed in the below of conveyor surface of print media 206, that is, the inboard of medium platform 202, and can be arranged in the face of or the nozzle of contact printhead form the surface.Consider the use as continuous print media such as coil paper, lid can place print media transporting flat top, that is, with printhead 811 same side so that not mobile print media ground execution recovery operation.
As mentioned above, in the present embodiment, the ink feeding system and the recovery system that are used for the printhead 811 of each printer unit are configured to be independent of other printer unit.This is arranged and makes according to mode of operation, promptly prints used China ink amount in each printer unit, supplies with the China ink of appropriate amount and carries out recovery operation.
(example constructions of ink system)
Fig. 8 illustrates the position relation between the essential part of an ink system in the printer unit 116, and Fig. 9 illustrates the exemplary internal structure of the ink system that a printhead uses.Printhead 811 is connected with two China ink pipes, one of them black pipe is connected to negative pressure chamber 30 producing the negative pressure that balances each other with the power that keeps being formed on the liquid level (meniscus) in the print-head nozzle, and another black pipe is connected to by pump 48 and is the ink donor unit of each printhead setting (below be called sub-container) 40.
Figure 10 illustrates black path and the partial enlarged drawing in the printhead 811.The printhead that present embodiment uses has 2,400 nozzles 50 having arranged the width more than 4 inches with the density of 600dpi (dpi (dots per inch)).Each nozzle 50 at one end has jet 51, is connected to ink supply path 54 at the other end.In each of nozzle 50 electrothermal transducer (heater) 52 is set, this electrothermal transducer (heater) 52 produces heat energy and produces bubble to spray China ink with heated ink with in China ink when energising.As heater 52 energising 1 μ during to 5 μ, China ink is heated and begins film boiling (film boiling) greater than 300 ℃ the time on the area of heating surface.China ink is subjected to inertia force, sprays from jet 51, drops on the print media, thereby forms image.Each nozzle 50 is provided with the nozzle group valve 53 as fluid control elements.This member displacement was so that apply inertia force and stop the motion of the China ink of feed path side towards the feed path side the China ink that sprays oral-lateral effectively when bubble formed.Reference numeral 56 is supply side that is arranged on ink supply path 54 and the filter that returns side.
Shown in Figure 11 A, Figure 11 B and Figure 11 C, negative pressure chamber 30 comprises the black retaining member 31 and a pair of relative tabular black retaining member 33 that is formed by elastomeric material.Negative pressure chamber 30 keeps China ink in by the interior space of these component limits.Compression spring 32 is installed in this between the relative tabular black retaining member 33, to tabular black retaining member 33 application of forces to make it to be tending towards away from each other to produce negative pressure.Negative pressure chamber 30 is positioned near the printhead 811, so the coupling part between this two does not almost have the pressure loss.Therefore, the inside of negative pressure chamber 30 negative pressure in the printhead no better than.Pump 36 can not be caught up with the black demand of increase if the black demand of printhead 811 sharply changes, then negative pressure chamber 30 as standby work to satisfy the demands.More specifically, this to its expansion forces ground of tabular black retaining member 33 compression pressure springs 32 opposings towards moving each other, with the internal capacity that reduces negative pressure chamber 30 with ink supply.
Valve in that the each several part in ink supply path is installed comprises valve 35, can be any desired type, as long as suitably unlatching and closed path or responsive control signal are suitably controlled China ink and flowed for they.For example, shown in Figure 12 A and 12B, can use valve 58, this valve 58 has ball valve leaf 56 and receives the valve seat 57 of ball valve leaf, and valve disc is connected to by the solenoid-activated downward jumper bar 55 that makes progress.In this case, can open and close black path by the solenoidal energising of control (energization), with towards or move valve disc 56 away from valve seat 57.Figure 12 A represents the state that open in black path, and Figure 12 B represents the state of black path closure.Yet,, can use as light-duty devices such as piezoelectric elements as actuator, to allow high response, the control of high performance negative pressure about valve 35.
Pump as for installing at the each several part in ink supply path comprises pump 36, can use any desired type, drives signal and delivered ink as long as they can respond.The pump 36 of present embodiment can be controlled black flow path direction and volume.That is to say, the pump 36 of this example is a gear pump, and it can draw optionally delivered ink of black direction (rotation in the direction is called backward rotation) from negative pressure chamber 30 along direction (rotation in the direction is called forward rotation) or edge to negative pressure chamber's 30 ink supply.
Off gas system 38 is connected to and comprises and will be printed the sub-container 40 (referring to Fig. 9) of the China ink of operating the appropriate amount that consumes.Sub-container 40 comprises: buffer component 41, and its part with black spatial accommodation is limited to wherein, can be according to black volume biasing or the distortion held; And joint (joint) 42, optionally set up the China ink connection that China ink pipe 204 (referring to Fig. 2) is connected to primary tank 203.When the China ink in the group container was short, as shown in Figure 14B, this joint 42 was connected to and China ink pipe 204 joints that cooperate 43, to be inked to sub-container 40 from primary tank 203 as required.
Joint 42,43 has valve rubber 66A, the 66B that respectively is formed with intercommunicating pore at the relative part place of the two.When joint 42,43 does not connect, close the opening of the intercommunicating pore among valve rubber 66A, the 66B by valve ball 63A, the 64B of valve spring 65A, the 65B application of force, shown in Figure 14 A.Under this state, the black path and the outside air that are connected to joint 42,43 are isolated.When jointing 42,43, make them closer to each other, as shown in Figure 14B, make valve rubber 66A, 66B keep mutually against, the ball lever 67 that causes cooperating with valve ball 64B pushes away valve ball 63A.As a result, valve ball 63A, 64B separate from valve rubber 66A, 66B, and the black path that causes being connected to joint 42 and 43 communicates with each other.
As long as joint 42,43 can cut out opening with being connected of the black path that prevents the isolation of ink leakage and foundation and outside air when not connecting, joint 42,43 can have any desired structure.
Except the suitable connection of above-mentioned joint with disconnect with allowing and forbidding that fluid is communicated with, can have the ink supply path that itself always connects, set up fluid by open and close valve in open/close mode and be communicated with.Desiredly be, between printer unit according to the content of divided image data and the black volume of needs not simultaneously, the ink supply operation of another printer unit is not interfered in the ink supply of printer unit operation.Aspect this, guarantee the independence of each printer unit in the present embodiment.
Figure 15 A and Figure 15 B illustrate the summary structure of the ink container 203 (203Y, 203M, 203C, 203K) that is connected to joint 43.The ink container 203 of this example comprises elasticity ink sac 69 and holds the vessel shell 68 of ink sac.Vessel shell 68 is formed with air connectivity hole 71, and storage device 70 is installed.Storage device 70 can be stored the various information relevant with ink container 203.Information such as the kind of the China ink that for example, holds, the black volume of residue and ink container type can be written into storage device and read as required in use.Ink sac 69 is out of shape according to the consumption that is included in the China ink in the ink sac, shown in Figure 15 A and 15B.Therefore, can supply with China ink in the ink sac 69 isolator with outside air.
As shown in Figure 9, the other end that is installed in the pipe in the printhead 811 is connected to sub-container 40 by pump 48.The above-mentioned pump 48 and the operation of pump 36 can be between sub-container 40, negative pressure chamber 30 and printhead 811 recirculation ink.
During the recovery operation that recovers mechanism, mechanical pump 36 stops forward rotation under the state in (path: close) at pump 48.This makes the quick supercharging in inside of printhead 811, forces to discharge a large amount of relatively China ink (being not used in the China ink that image is printed) from the nozzle of printhead 811 in the short time.As a result, nozzle recovers its good (sound) state.The China ink of force discharging is received in the black receiver of lid 44, collects sub-container 40 to utilize from covering 44 black receiver by valve 47 fast by the action of the pump 45 that has turned round again.Nozzle rows and preliminary injection the with unshowned wiper blade wiping printhead 811 is not used in the China ink that forms image subsequently.Now, finished the recovery operation of printhead 811.
(operation of ink system)
Below, with the operation of explanation ink system under the different user modes of printer unit 116.
The preparation (referring to Figure 16 A, 16B and 16C) of dispatching from the factory
After making printer unit 116 or printhead 811, China ink is poured container 40 into by joint 42 shown in Figure 16 A, and meanwhile, operating pumps 36,48 and 45 is to fill the ink system in the printer unit 116 with China ink.At this moment, the air that is present at first in the ink system is discharged from the ventilating opening of off gas system 38.Then, printhead is through recovery operation, and this recovery operation comprises from the nozzle of printhead 811 forces to discharge China ink to covering 44, printing women's head-ornaments and carry out preliminary ink-jet with the wiper blade wiping.Then, carry out test printing operation and aging (ageing).
Then, consider when transportation printer unit situation that will stand, reduce the China ink amount in the ink system of printer unit 116.That is, mechanical pump 36 reversings are shown in Figure 16 B, the China ink in the ink system of printer unit 116 is retracted primary tank 203 to reduce the China ink amount in the negative pressure chamber 30.Then, shown in Figure 16 C, will cover 44 and keep closely contacting with printhead 811.Raise by environmental change, especially temperature and pressure when descending even above process makes during transportation when printer unit 116, make China ink than not leaking.
As the China ink that between the delivery period of printer unit 116, will charge into ink system, can use transportation dedicated liquid and conventional printing with black.Dedicated liquid is the liquid by considering that environmental change between the delivery period and the prolongation of delivery period produce between the delivery period, can use by removing the liquid that obtains as colorants such as dyestuff and pigment from the black composition of routine.When this transportation dedicated liquid of use, need the extra processing of execution before the beginning printing, to use the transportation dedicated liquid in the conventional China ink replacement ink system.
(referring to Figure 17 A, Figure 17 B and Figure 17 C) prepared in operation
Before the PRN device that use is sent and installed, joint 42 is connected to the joint 43 of primary tank 203 sides, and the running of pump 36 forwards is shown in Figure 17 A, so that China ink is sent in the negative pressure chamber 30.Then, in order to remove the bubble that remains in the path, pump 36 and 48 runnings are shown in Figure 17 B, to pass through printhead 811, sub-container 40 and off gas system 38 recirculation ink from negative pressure chamber 30.This China ink circulation continues the suitably long time, removes to the degree that throws into question hardly by the air that off gas system 38 will be trapped in the path.Then, in order to discharge near the air the nozzle that remains in the printhead 811 and to recover good jet performance, mechanical pump 36 stops forward running under the state in (path: close) at pump 48, shown in Figure 17 C.This makes the inside of printhead 811 pass through negative pressure chamber's 30 quick superchargings, forces to discharge a large amount of relatively China inks from the nozzle of printhead 811 in the short time.As a result, nozzle returns to normal.The China ink of force discharging is received in the black receiver of lid 44, collects sub-container 40 to utilize from covering 44 black receiver by valve 47 fast by the action of the pump 45 that has turned round again.Subsequently with the nozzle rows of unshowned wiper blade wiping printhead 811 and tentatively injection.Now, finished the recovery operation of printhead 811.
The wait of printing (referring to Figure 18 A, 18B and 18C)
Normal waiting time before printing begins, the China ink that big relatively negative pressure (the approximately following 20-150mmAq of atmospheric pressure) is applied in the printhead 811 keeps stability with the variation of opposing environment.That is to say, shown in Figure 18 A, stop pump 48 and turn back to sub-container 40 from printhead 811 that pump 36 counter-rotatings are so that the China ink in the negative pressure chamber 30 turns back to sub-container 40 with limit ink.This has increased the negative pressure that is applied to the China ink in the printhead 811.Then, shown in Figure 18 B, under the state of having kept bigger negative pressure, equipment is waited for the beginning of printing.The capacity of sub-container 40 increases the China ink amount of returning from negative pressure chamber 30 along the following direction of arrow of Figure 18 A.
Yet, if make ink system keep the negative pressure state of Figure 18 B, be inked to the performance degradation of (reinjecting) printhead 811 during the printing, make to be difficult to the high-frequency drive printhead.Therefore, when input print signal (the step S1041 of Fig. 5), the running of pump 36 forwards is shown in Figure 18 C, to carry out preliminary ink supply.That is to say that negative pressure chamber's 30 superchargings reduce negative pressure to the degree that is suitable for printing with towards the negative pressure of positive direction control action on printhead 811.Negative pressure in the negative pressure chamber 30 can detect by B/P EGR Back Pressure Transducer EGR 49 or sensor 149 (referring to Figure 11 A).The volume of sub-container 40 has reduced to be conveyed into the China ink amount of negative pressure chamber 30 in the upward arrow direction of Figure 18 C.
Ink supply control (referring to 19A, Figure 19 B and Figure 19 C) during printing
By suitable control negative pressure control valve 35 and mechanical pump 36, can be according to keeping negative pressure very uniformly with the corresponding printing duty of content (print density) of the view data that will print by printer unit 116 or printhead 811.
For example, when the printing duty is low, the running of pump 36 low speed forwards, shown in Figure 19 A, ink supply when control negative pressure control valve 35 is stablized negative pressure with high accuracy is to optimize ink supply.That is to say that by supplying with China ink in a small amount, the black negative regulation in the printhead is in optimum range.In addition, on negative pressure control valve 35, carry out on-off control or opening degree and regulate control, with the negative pressure of further stable China ink.
In this case, (rate) is relatively little for the ratio that stream is opened, and opening degree is controlled in the narrow relatively scope.
When printing duty (print density) was high, the running of pump 36 high-speed forward shown in Figure 19 B, to increase the ink supply capacity, was controlled negative pressure control valve 35 to stablize negative pressure simultaneously.In this case, the ratio that stream is opened is big relatively, and opening degree is controlled in the wide relatively scope.
When printing stopped, negative pressure control valve 35 cut out immediately, shown in Figure 19 C.Purpose is to prevent can to take place when printing from stopping acting on the ink supply pressure that inertia caused by China ink on negative pressure chamber 30 and the printhead 811.If apply ink supply pressure, then the interior pressure in the printhead increases, and causes that China ink increases from the possibility of nozzle leakage, thereby cause the decline of print quality during printing subsequently.
The control of negative pressure control valve 35 can be finished by the output signal of B/P EGR Back Pressure Transducer EGR 49,149 (referring to Figure 11 A) of feedback negative pressure chamber 30.As explanation after a while, negative pressure control valve 35 and pump 36 can be controlled associated with each otherly based on print data.
In addition, according to the black volume that the unit interval consumes, that is, print duty, forward rotation amount and forward rotation speed that not only can control pump 36 can also be controlled its backward rotation amount and backward rotation speed.When pump 36 forward rotation, the negative pressure that can suppress by the China ink according to black consumption active boost printhead 811 sides in the printhead 811 increases.On the other hand, when pump 3 counter-rotating, can reduce by initiatively reducing to act on the negative pressure that the pressure on the printhead 811 side China inks minimizes in the printhead 811.In addition, relevant with this control of pump 36, can control negative pressure control valve 35 with the negative pressure in the high accuracy control printhead 811, further stablize its negative pressure.
Under present embodiment, regardless of duty (print density), the negative pressure that ACTIVE CONTROL is supplied with to the China ink of printhead can apply suitable, stable negative pressure to printhead.Therefore, for example, on the large scale print media in the industrial PRN device (printer) of flying print image, even when the black consumption of time per unit alters a great deal, present embodiment also can be controlled negative pressure with good response, makes the minimize variations of printhead negative pressure.In this industry PRN device, in order to satisfy the high-quality especially requirement of print image, the negative pressure variation that suppresses in the printhead is important.
Control during the recovery operation (maintenance) (referring to Figure 20 A, Figure 20 B and Figure 20 C)
Figure 20 A illustrates the recovery operation of forcing to discharge the China ink that does not form image from the nozzle of printhead 811.
In this recovery operation, mechanical pump 36 stops forward running under the state in (path: close) at pump 48.This makes that printhead 811 is inner by negative pressure chamber's 30 quick superchargings, forces to discharge a large amount of relatively China inks from the nozzle of printhead 811 at short notice.As a result, nozzle returns to normal.The China ink of force discharging is received in the black receiver of lid 44, collects sub-container 40 to utilize from covering 44 black receiver by valve 47 fast by the action of the pump 45 that has turned round again.Use the nozzle rows and the preliminary ink-jet of unshowned wiper blade wiping printhead 811 subsequently.Now, finished the recovery operation of printhead 811.
Figure 20 B illustrates by off gas system 38 and removes the operation that is dissolved in the gas componant in the China ink.
In this operation, pump 36 low speed forward rotation are providing a spot of China ink to negative pressure chamber 30 from off gas system 38, and pump 48 runnings simultaneously are to return than the black more substantial China ink that is supplied to container 40 by pump 36 from printhead 811.Therefore, the China ink amount in the negative pressure chamber 30 reduces, and with the circulation of inking by off gas system 38, the gas componant in the dissolving China ink is removed.
Figure 20 C illustrates ink system and enter holding state after recovery operation.
In this holding state, under the state of predetermined negative pressure, valve 35 cuts out in the internal regulation of negative pressure chamber 30, and pump 48 stops keeping the negative pressure of adjusting.At this moment, the negative pressure in the negative pressure chamber 30 can be made as lower negative pressure during the holding state than the printing shown in Figure 18 A.
Ink supply operation (referring to Figure 21 A and Figure 21 B)
Figure 21 A and Figure 21 B illustrate the ink supply operation from main ink container 203 to sub-ink container 40.
When the black volume in remaining in sub-container 40 was reduced to less than scheduled volume, shown in Figure 21 A, jointing 42,43 was to be inked to the ink container 40 from ink container 203.At this moment, can be by using the head difference ink supply.As a result, along with refilling again, upwards the elastic component of the ink container 40 of distortion is out of shape downwards shown in Figure 21 B shown in Figure 21 A.
(summary of ink system control)
Next, the operation of the ink system of present embodiment will be described from the printing duty of printhead and the viewpoint that is applied to the negative pressure of printhead with reference to Figure 22.
" printing duty " (print density) shown in the top layer of Figure 22 be when printer unit at the print state printing duty (print density) in following time.Operational phase under the print state can be divided into the quiescent phase (rest stage) of not carrying out printing, be right after in pre-printing standby stage, printing stage before the printing and be right after back printing standby stage after printing, prints stage printing machine unit in the back and waits for next printing.During the printing stage, the China ink amount of supplying with promptly is used to print the China ink amount that is consumed according to the printing duty changes.In this example, print duty and be divided into four-stage, in view of the above, pump discharge (pump flow) (by the China ink amount of pump 36 transmission) is made as shown in the intermediate layer of Figure 22.Printing duty shown in the figure only is an example, can change according to view data certainly.
The negative pressure that is applied to printhead 811 is detected by pressure sensor 49 (or 149), and this pressure sensor 49 (or 149) is seated near the printhead 811, have the negative pressure chamber 30 with printhead negative pressure state much at one.The negative pressure that detects illustrates at the bottom of Figure 22.
As mentioned above, during quiescent phase, big relatively negative pressure (is applied to printhead approximately-120mmAq) so that ink system is resisted the variation of environment and stablized.Pre-print the standby stage during, shown in the intermediate layer of Figure 22, be right after and before printing begins, begin ink supply.Be right after before printing begins and carry out this control and can guarantee to be right after enough ink supply performances are arranged, the raising print quality printing begins after.
Then, in " duty 1 " during the printing stage, printing at the beginning, the negative pressure in the printhead just increases, so pump discharge increases to reduce negative pressure in the printhead to improve the ink supply performance according to the detected value of pressure sensor 49.Consider when printing begins that the negative pressure in the printhead increases, can urgently be connected on printing begin before with regard to control pump 36 and valve 35 further to stablize the negative pressure in the printhead.In this case, can set controlled quentity controlled variable and the control timing that is used for pump 36 and valve 35 according to the printing duty of determining from print data.
In " duty 2 ", printing duty further increases, and is applied to the increase of the negative pressure of printhead so pump discharge further increases and minimizes.This makes can carry out ink supply with high print speed.When printing the duty change, from proper point control pump stream before changing generation, with the further negative pressure of stablizing in the printhead.In this case, change front or rear printing duty and determine,, can set the controlled quentity controlled variable and the control timing of pump 36 and valve 35 based on printing duty from print data.
Similarly, in " duty 3 " and " duty 4 ", the negative pressure of China ink that is applied to printhead according to the detected value ACTIVE CONTROL of separately printing duty and pressure sensor 49 is so that the negative pressure in the printhead always is stabilized in optimum level.As a result, improve the response and the stability of ink supply, made the size of no matter printing duty, all printed high quality image.
If, be right after after printing finishes, because black inertia, the negative pressure in the printhead is tending towards reducing, and then it is desirable to just control pump flow reducing with the elimination negative pressure before printing finishes.This can further stablize the negative pressure in the printhead.In addition, by being right after shut off valve 35 after the printing, the reducing and can minimize of the negative pressure in the printhead.
After printing, printhead is applied big relatively negative pressure once more, keep stability with the variation of opposing environment.That is to say,, can prevent under other situations when the time from the ink leakage of the nozzle generation of printhead as environmental changes such as variations in temperature by increasing the negative pressure in the printhead, thus the reliability of raising PRN device.
Here, will the control of the output of working pressure sensor 49 as the pump motor 508 of feedback signal be described with reference to Figure 23, Figure 24 A and Figure 24 B.
Figure 23 is the block diagram that illustrates with reference to the control pressurer system of the interior details of the pump motor controller 822 of the block diagram illustrations of Fig. 3 of printer unit.The output of pump motor controller 822 feedback pressure sensors 49 is with the pump motor 508 of control as servomotor.
When beginning during printing, CPU 800 will represent that (digital value as, pact-10mmAq) writes DA converter 830 to little negative pressure, and this DA converter 830 then will be provided to (+) input of subtracter 834 corresponding to the simulation requirements of negative pressure.The output that is installed near the pressure sensor 49 the printhead 811 is fed back to (-) input of subtracter 834, and difference signal (error) is fed back to AD converter 831, and the digital value of its conversion is read by CPU800.CPU 800 is according to comprising that the error signal of polarity exports the signal (DIR) of the rotation direction of having stipulated mechanical pump 36, to drive the driving AMP 833 of the pump motor 508 of controlling mechanical pump 36, also set PWM (pulsewidth modulation) value of the driving duty of expression driving AMP 833 in the pwm circuit 832.
Conversion table between the reading of AD converter 831 and the PWM value as shown in Figure 24.When difference signal (error) has (+) polarity chron, by output port (I/O) 806 with rotation direction signal (DIR) be made as expression forward rotation (giving the direction of the internal pressurization of printhead 811) value (as, " 1 ").If difference signal (error) is (-) polarity, then rotation direction signal (DIR) is made as the expression backward rotation (reducing the direction of the internal pressure of printhead 811) value (as, " 0 ").
When as the absolute value of the difference signal (error) of the output of subtracter 834 when big, the driving duty that drives the driving AMP 833 of pump motor 508 increases, with quick formation desired pressure.On the other hand, when the absolute value of difference signal (error) hour, the driving duty that drives AMP 833 reduces, to suppress pressure overshoot or less stress.
If valve 35 is as auxiliary control unit, although not shown in the drawings, light valve that preferably can high-speed response then.
During printing, the negative pressure bid value of setting in subtracter 834 is not to be necessary for steady state value.CPU 800 reads the content of VRAM 801 to print duty according to the pixel quantity estimation that will print.If print duty, then can in DA converter 830, setting in advance be used for the just high pressure bid value of the point before negative pressure decline above the negative pressure in predetermined value and the hope reduction printhead.
By using the FEEDFORWARD CONTROL of aforesaid combination, the stability of the printing of printhead 811 is significantly improved.In this case, because negative pressure may descend owing to the control time-delay, can be provided with the independent PWM value conversion table of the high-gain (AMP gain) that is used for pressure differential (error), shown in Figure 24 B.PWM value conversion table shown in Figure 24 A and Figure 24 B is stored among the ROM 803 in advance.
In addition, be used for the method for adjusting of the gain (AMP gain) of pressure differential (error) except use, can carry out the compress control method of the parallel control that relates to valve 35.Use the operating process of the CPU 800 of this method will be with reference to figure 25A explanation.Under normality (solenoid: close), shown in Figure 12 A, valve 35 is opened.At first, in predetermined time duration, the PWM value that is used to drive the pwm circuit 823 of solenoid 821 (referring to Fig. 3) is made as 100%, and the jumper bar of solenoid 821 begins to move (step S2501).Then, the SERVO CONTROL of pump motor 820 also begins.From this point forward, pump motor controller 822 is intermittently carried out FEEDBACK CONTROL (step S2502) according to force value default in the DA converter 830 (referring to Figure 23).At this point, pump motor controller 822 may carried out control.
Then, CPU 800 reads the output of pressure sensor 49, is converted into absolute value (step S2503).Based on the absolute value of pressure differential of conversion, CPU 800 reads the driving PWM value of solenoid 821 from the conversion table of Figure 25 B, and should drive the PWM value and be located at (step S2504) in the pwm circuit 823.If pressure differential is big, then valve 24 is near opening.If pressure differential reduces, then valve 35 is near closed condition.That is to say, with reference to the example of figure 24A and Figure 24 B explanation, can realize by the control of valve 35 with the gain-adjusted similar effects that drives AMP 833 as.That is to say that when pressure differential was big, control valve 35 was fast near setting value; When pressure differential reduced, control was to prevent to surpass or do not reach predetermined pressure.
Above-mentioned processing constantly repeats (step S2505) at each predetermined period.When (step S2506) finished in printing, before end process with the driving PWM value zero clearing (step S2507) of solenoid 821.
[second embodiment]
Figure 26 to Figure 36 illustrates the second embodiment of the present invention, and the member identical with front embodiment adopts identical Reference numeral and omit its explanation.
Present embodiment relates to the example in the image formation system that equipment of the present invention is included in Fig. 1 and Fig. 2.Therefore, the summary of the image formation system in the present embodiment and front embodiment's is similar.
(control system in the printer unit)
Figure 26 illustrates the example arrangement of control system in each printer unit 116.The member identical with front embodiment is designated as same Reference numeral and omits its explanation.
For each of printhead 811Y, 811M, 811C and the 811K of different color ink special uses independently is provided with one group of pump motor 820,508, valve control solenoid 821 and pressure sensor 544. Printhead 811Y, 811M, 811C and 811K can move by unshowned printhead U/D motor is vertical, and are added a cover by airtight adding a cover the position in except the standby during the printing.
In the present embodiment, medium conveying apparatus 117 with Fig. 2 in identical mode construct, and its control system with Fig. 4 in identical mode construct.Therefore, the structure of present embodiment medium conveying device and control system thereof and front embodiment's is similar.The signal system that is used for image formation system and printer complex in the present embodiment and ink system and Fig. 5, Fig. 6 are with shown in Figure 7 similar.Therefore, the summary of the signal system of the summary of image formation system operation in the present embodiment, printer complex and ink system and front embodiment's is similar.
(example structure of ink system)
Be used for position relation and front embodiment Fig. 8 identical between the essential part of ink system of a printhead.Figure 27 illustrates the internal structure example of the ink system that is used for a printhead.Printhead 811 is connected with two China ink pipes, the tubular ink supply path 530 that becomes the printhead ink supply and keep and control preferred negative pressure of a China ink.Another China ink pipe constitutes the black path 550 that is connected to the ink donor unit (being also referred to as sub-container) 540 of each printhead 811 usefulness by pump 548 and check valve 551.
For example, the printhead 811 that uses of present embodiment with Figure 10 in identical mode construct.
Figure 28 illustrates printhead 811 is connected to the structure in ink supply path 530 of ink container and the structure that is set to the negative pressure generating unit in ink supply path 530.In Figure 28, ink supply path 530 comprises circulating path 531 that its end is communicated with two diverse locations of sub-container 540 bottoms and the access path 532 that printhead 811 is connected to circulating path 531 middle parts.In access path 532, permission is set and interrupts the pressure-regulating valve 535 that China ink flows.
Setting pressure is regulated pump 536 to pass through circulating path 531 recirculation ink in sub-container 540.It is axial-flow pump (axial flow pump) that in this example pressure is regulated pump 536, comprising: turning cylinder 536b, rotated forward or backwards by the motor 501 of the upper surface that is installed in sub-container 540; And impeller 536a, it is secured to turning cylinder 536b.Impeller 536a is installed near the opening h1 of the sub-container 540 that is communicated with an end of circulating path 531.Impeller 536a forward rotation to be introducing China ink the sub-container 540 from circulating path 531 by opening h1, with along direction of arrow recirculation ink among the figure.Blade 536a backward rotation is to be conveyed into circulating path 531 with China ink from sub-container 540 by opening h1.
The other end of circulating path 531 is installed flow control valve (flow resistance adjusting parts) 503, to regulate the China ink amount that flows between sub-container 540 and the circulating path 531.In this example, second end of circulating path 531 branches into three individual path 531a.Altogether three opening h2 of the sub-container 540 that is communicated with this individual path 531a advance to opening along with ball valve leaf 503a and from the opening withdrawal and open and closed.Advance and the retraction operation of ball valve leaf 503a are carried out by the solenoid 503c that the axle 503b with ball valve leaf 503a moves around.By optionally being opened by valve disc 503a and closed three opening h2, the gross area of the opening h2 of the sub-container 540 that is communicated with second end of circulating path 531 can progressively change (in this example, 3 steps).The area of change opening h2 can be regulated the black flow resistance between circulating path 531 and the sub-container 540.In the present embodiment, the mobile control part of China ink comprises the CPU 800 of pressure adjusting pump 536, flow control valve 503 and their controller of conduct control.
Then, impeller 536a causes China ink to flow along the direction of arrow in circulating path, to produce negative pressure in access path 532 by motor 501 forward rotation.The size of negative pressure is corresponding to the black flow velocity that flows in circulating path 531 along the direction of arrow, and increases with flow velocity.This negative pressure is applied to printhead 811.Therefore, can by regulate black flow velocity in the circulating path 531, carry out pressure regulate pump 536 forward rotation speed control and by in the control of the area of 503 couples of opening h2 of flow control valve at least one or preferably the two controls the negative pressure that is applied to printhead 811.The forward rotation speed area high more and opening h2 that pressure is regulated pump 536 is more little, and it is big more that the negative pressure of generation will become.
When impeller 536a is reversed by motor 501, in circulating path 531, produce the China ink stream of the anti-direction of arrow, in access path 532, produce malleation.As explanation after a while, when control was applied to the negative pressure of printhead 811, initiatively working pressure was regulated this forward rotation control and the backward rotation control of pump 536.In this case, along with the backward rotation speed increase of pump 536 and the area of opening h2 reduce, the malleation of generation increases.
In access path 532, install and to allow and to interrupt the pressure-regulating valve 535 that China ink flows.Pressure-regulating valve 535 can use and Figure 12 A and the similar structure shown in Figure 12 B.
Being installed in the valve that comprises valve 535 and 503 in the each several part of ink supply path only needs suitably opening and closing stream or responsive control signal suitably to control China ink to flow, can have any desired structure beyond the structure shown in Figure 28 and Figure 12 A.As for valve 503, using as light-duty devices such as piezo-electric devices is effective as actuator with the high-performance negative pressure control that realization has high responsiveness.
The pressure that comprises that is installed in the each several part of ink supply path is regulated the pump of pump 536 and is only needed to respond driving signal transmission China ink and can have any desired structure.Yet preferably, pump 536 can change black flow direction, and can also cooperating with flow control valve 503, it is mobile to change ground adjusting China ink with little pressure.
In this example, the pump 536 of use is the constant voltage axial-flow type that is driven by the motor (not shown) that can control its rotation direction and velocity of rotation.As mentioned above,, produce China ink along the direction of drawing China ink from access path 532 and flow, that is, apply negative pressure to access path 532 when pump 536 during by forward drive.When pump reverses, produce China ink along the direction that is inked to access path 532 and flow, that is, apply and just be pressed onto access path 532.As pump 548, can use gear pump.In explanation after a while, produce the rotation that printhead 811 is applied the pump 536 that the China ink of negative pressure flows and be called forward rotation, produce to printhead 811 apply rotation that the China ink of malleation flows be called the back to or backward rotation.
As Figure 27 and shown in Figure 28, sub-container 540 has a pair of relative movable link 540A that is made by elastomeric material and the compression spring 540B between this movable link.The rapid pressure that the stretching of this spring 540B and compression suppress sub-container 540 changes.
Setting pressure sensor 544 is to detect the pressure in the access path 532 near the printhead 811.CPU 800 reads the output of pressure sensor 544, as after a while the explanation, FEEDBACK CONTROL (or FEEDFORWARD CONTROL) along all rotating pump 536 of both direction so that the pressure in the printhead 811 is adjusted to desired value.
Unshowned pressure sensor is installed in sub-container 540, and China ink minimizing and internal pressure that this pressure sensor detects in the sub-container are brought down below predeterminated level, so that can be from primary tank 203 automatically supplying inks.
For various black colors are provided with two primary tanks 203.One of them is selected by directional control valve 534-1, and by driving pump 534-2, China ink can supply to sub-container 540 by managing 204 ink containers 203 from selection.The joint 42 of tube connector 204 and sub-container 540 can have and Figure 14 A and the similar structure shown in Figure 14 B.
Except aforesaid joint suitably connects and disconnects allowing or to forbid the fluid flow, ink supply path itself is always connected and set up fluid flow in open/close mode by the on-off valve.Desiredly be, when the black volume that requires between according to the printer unit of the content of divided image data not simultaneously, the ink supply operation in printer unit not with another printer unit in the ink supply operative interventions.Aspect this, guaranteed the independence of each printer unit in the present embodiment.
The ink container 203 (203Y, 203M, 203C, 203K) that is connected to joint 43 can have and Figure 15 A and the similar structure shown in Figure 15 B.
Now, let us returns Figure 27.
Can manage following recirculation ink by another that is connected to printhead 811.
Under the state that black flow control valve 503 is opened, pump 548 rotates along the direction of drawing China ink from printhead 811, China ink is circulated by pump 536, valve 535, printhead 811, pump 548, valve 552, bubble decontamination chamber 532 and off gas system 38 from sub-container 540, get back to sub-container 540 then.Along this path circulation, the gas in the China ink is removed by off gas system 38 with inking.In this operation,, no problem at aspect of performance if pump 536 does not turn round.In this operating period, because the flow resistance of filter 581 although the China ink volume is little, also is discharged in the black receiver that covers 44 from printhead 811.
As the composed component that is intended to the inkjet performance of printhead is remained on the recovery system of kilter or recovery normal injection performance, lid 44 is arranged in the printhead unit.During printing, lid 44 nozzles from printhead 811 form the surface withdrawal to avoid interfering printing.During the printing standby or when needing the recovery operation of printhead 811, nozzle forms the surface and is added a cover by airtight.
Then, with the recovery operation of explanation based on good inkjet performance supercharging, that be used to recover printhead 811.
Under printhead 811 usefulness lid 44 states that cover, valve 535 closures, China ink collection suction pump 45 begins from covering 44 sucking-off China inks then.Reference numeral 580 is and the printhead 811 airtight hermetic units that contact.
Then, pump 548 runnings are to pressurize towards printhead 811 to China ink.Because valve 535 closures, the quick supercharging in the inside of printhead 811 is forced to discharge a large amount of relatively China inks from nozzle, makes the nozzle of printhead 811 return to kilter.The China ink of discharging is collected fast by the pump 45 that has turned round and by off gas system 38 degasification, is turned back to sub-container 540.Off gas system 38 can have and identical structure shown in Figure 13.
Being used for the output of the driving signal of pump and valve and sensor is sent to the control module that comprises CPU 800 and I/O port 806 or transmits from this control module.
Then, will the operation of ink-feeding device in the present embodiment be described.At first, printing duty and the viewpoint that acts on the pressure on the printhead from printhead 811 will illustrate the operation of ink system with reference to Figure 29.During the non-spray regime 1301 of printhead 811 not ink-jets, pump 536 forward rotation with produce shown in 1302 predetermined negative pressure with the printhead inner sustain in the big relatively negative pressure shown in 1303.Before beginning from the printhead ink-jet (1304), the negative pressure that is produced by the pump 536 of forward rotation reduces with near the atmospheric pressure (0mmAq) shown in 1306.That is to say that the forward rotation speed that reduces pump 536 is to be reduced to the negative pressure in the printhead best range of negative pressure (spraying allowed band 1307).
Printing Once you begin, just be applied to the negative pressure of printhead 811 by the pressure that pump 536 produces with adjusting, thereby alleviate the negative pressure variation that causes by ink-jet in the printhead negative pressure is remained in the preferred injection allowed band 1307 according to the variation control of printing duty.Regulate the pressure that produces by pump 536 by control pump 536 and flow control valve 503, as mentioned above, be applied to the negative pressure of printhead 811 with adjusting.
Next, explanation is regulated the situation of the negative pressure in the printhead by control pump 536.Also can control the negative pressure of regulating in the printhead 811 by the combination of control flow control valve 503 or valve 503 and pump 536.
Negative pressure in the printhead 811 is tending towards increasing with the increase of printing duty.Therefore, the forward rotation speed of pump 536 reduces the negative pressure in the printhead 811 is remained on best the injection in the allowed band 1307 according to printing duty.When the printing duty is high, promptly, negative pressure growth trend in the printhead 811 is strong, if the reducing of the forward rotation speed of pump 536 can't prevent that the negative pressure in the printhead from becoming too big, then pump 536 reverses with the malleation of generation shown in 1311, thereby the negative pressure in the printhead 811 is reduced to injection allowed band 1307.In addition, when the printing duty descends shown in 1310, pump 536 forward rotation turn back to negative pressure (shown in 1309) with the pressure that will produce and reduce to prevent the negative pressure in the printhead 811, otherwise, can cause the negative pressure the printhead 811 to reduce from the inertia force of the China ink of sub-container 540 toward print head 811.
By coming control pump 536, the negative pressure in the printhead 811 can be maintained in the preferred injection allowed band 1307 based on above-mentioned printing duty.When velocity of rotation that changes pump 536 and rotation direction, about printing the duty variation some time-delays are arranged in negative pressure control response, cause a little irregular pressure to change (1308).Yet the degree that this pressure changes forms almost not influence to image.Also can detect this little pressure variation, change to alleviate this little pressure based on testing result control pump 536 or pressure-regulating valve 535 by being installed near printhead 811 pressure sensors 544.
Figure 30 illustrates example pressure control program in the present embodiment.In the control system configuration that printer unit is as shown in Figure 3 used, can carry out this program according to the program that is stored among the ROM803 by CPU 800.
At first, check whether there is print data (step S1401),, determine the printing duty (step S1402) of per unit print area if exist.In printer unit (for example, EEPROM 804), set in advance about printing the printhead pressure variation configuration file of duty.By with reference to this configuration file (step S1403), be identified for and print the pressure set points (step S1404) of the pump 536 of duty coupling.Then, based on this pressure set points, control pump 536 is to regulate the pressure in the printhead in spraying allowed band 1307.
When printing begins (step S1406), check whether the printing duty of per unit print area has changed above scheduled volume (step S1407) from the printing duty that determines the current pressure setting value.Changed above scheduled volume if print duty, then referred again to and print duty to printhead pressure variation configuration file and change the setting (step S1407, S1411) of the pressure that will produce by pump 536.That is to say that be increased to the upper limit that is higher than preset range if print duty, then the negative pressure in the printhead is tending towards increasing.Therefore, spray in the allowed band 1307, reduce the forward rotation speed or the counter-rotating pump of pump 536 for the negative pressure in the printhead is remained on.On the contrary, drop to the lower limit that is lower than preset range if print duty, then the negative pressure in the printhead is tending towards reducing.Therefore, spray in the allowed band 1307, increase the forward rotation speed of pump 536 or reduce backward rotation speed for the negative pressure in the printhead is maintained.Repeat this control and finish (step S1412) up to printing, control program moves to standby mode afterwards.
Can realize above-mentioned control by hardware configuration rather than with software program, this hardware configuration comprises the counter of recording image data figure place and controls the parts of motor with driving pump 536 according to count value.In addition, replace when printing that duty carries out with printing and carry out control when changing, also can determine pump control curve in advance and carry out FEEDFORWARD CONTROL to pump based on print data according to controlling curve.In addition, based on the output that detects the parts of actual pressure in the printhead (if can think the actual printhead pressure that equals of pressure in the sub-container 540, but then working pressure sensor 544), can carry out the LOCAL FEEDBACK loop control to pump.
Then, use to the user each stage of this equipment at the ink jet printing device from factory's transport point manufacturing, we will illustrate setting and the operation of carrying out thereof by reference Figure 31 to Figure 36 on ink-feeding device.
The preparation of dispatching from the factory
Figure 31 to Figure 33 illustrates the operation of ink-feeding device before the ink jet printing device of making dispatches from the factory.At first, as shown in figure 31, running pump 534-2 is to inject sub-container 540 from primary tank 203 by joint 42,43 with China ink.At this moment, valve 535,503 is for opening.Though pump 536,548 stalls, China ink can flow through through this pump.
In the process of China ink being injected sub-container 540, the inside of all black paths and printhead 811 is full of China ink basically.This moment, there is bubble in the mass part in black path.
Inject finishing of sub-container 540 with inking from primary tank 205, carry out from black path and eliminate bubble and degas operation.
That is to say that pump 536,548,45 forward rotation are got back in the sub-container 540 then so that China ink is entered valve 535, printhead 811, pump 548, valve 552, bubble decontamination chamber 532 and off gas system 38 circulations from sub-container 540 by valve 503 and pump 536.By with this mode recirculation ink, the bubble in the China ink in bubble decontamination chamber 532, be eliminated and China ink by off gas system 38 degasification.In this operation, nonexistence can problem if pump 536 does not rotate.Though because the flow resistance of the filter 581 of printhead 811, small volume of ink enters in the black receiver that covers in 44, the China ink of discharging is collected in the circulating path fast by pump 45.Predetermined lasting time is constantly carried out this operation can remove bubble and gas from black stream.
Figure 33 is illustrated in the recovery operation of printhead 811 in the final step of preparing of dispatching from the factory.
During the beginning recovery operation, the China ink in the black path is degased.In recovery operation, at first shut off valve 535, and the pump 45,548 that turns round then is to move China ink along the direction of arrow among Figure 33.China ink in the sub-container 540 is introduced pump 548 and is supplied to printhead 811 by check valve 551.Because valve 535 is closed, so the China ink supercharging fast in the printhead 811 is forced a large amount of relatively China ink of ejection from nozzle.As a result, the inkjet performance of nozzle recovers normal.Be discharged to the China ink that covers the black receiver in 44 and collect bubble decontamination chamber 535 fast to utilize again by the pump 45 that has turned round.
Then, stop pump 548,45, open valve 535, after this use the nozzle surface (forming the surface of nozzle) of unshowned wiper blade wiping printhead 811.Then, the China ink that is not used in image formation goes into to cover 44 from the nozzle ejection of printhead 811.Finished recovery operation now.
Between installation period
After PRN device is delivered to the user and before bringing into use, jointing 42,43 as shown in figure 31, carry out the recovery operation of printhead 811 as shown in figure 34.Identical during the China ink during this recovery operation flows recovery operation with Figure 33, unique different be the operating time.Therefore in this detailed.If through longer a period of time, can carry out after dispatching from the factory as eliminating and degas operation with reference to the illustrated bubble of Figure 32.If elapsed time is short, the recovery operation that can omit Figure 34.The CPU 800 that is stored in the program among the ROM 803 in the PRN device by execution carries out the decision of elapsed time length and associative operation.
Print during the standby
During the normal standby before printing begins, in printhead 811, keep big negative pressure (being less than about atmospheric pressure 20-150mmAq), to guarantee to resist the stability of environmental change.Under this state, when receiving print command, printhead 811 moves to the print position of print media top from adding a cover the position, changes pressure set points simultaneously to reduce the negative pressure in the printhead 811.
Ground relevant with the control of pump 536 also control valve 503 to realize the FEEDBACK CONTROL of higher response.In this case, the light-duty valve that preferred use can high response is as valve 503.
Supply control during the printing
Figure 36 illustrates the negative pressure control during the printing.
During the standby of the control of negative pressure during the printing and Figure 35 much at one.CPU800 reads the output of pressure sensor 544, and element is carried out PWM (pulsewidth modulation) control of the rotation direction that comprises pump 536 to realize high responsiveness.In the present embodiment, during printing, valve 503 closures and the black path of pump 548 sides is also closed.As mentioned above, ground relevant with the control of pump 536 control valve 503 can realize having the FEEDBACK CONTROL of the response of improvement.
The output of working pressure sensor 544 can be carried out by using the control pressurer system similar to front embodiment shown in Figure 23 as the control to pump motor 508 (drive motor of pump 536) of feedback signal.
[the 3rd embodiment]
Figure 37 A and Figure 37 B illustrate heteroid ink system.
The same with first and second embodiment, the ink system of Figure 37 A has the negative pressure applying unit, and this negative pressure applying unit is included in pump P and the valve V among the ink supply path L1 between ink container T and the printhead H.Pump P and valve V be corresponding to mechanical pump among first embodiment 36 and pressure-regulating valve 35, and regulate pump 536 and pressure-regulating valve 535 corresponding to the pressure among second embodiment.Printhead H is corresponding to the printhead among first and second embodiment 811.China ink communication path L1 is equal among first embodiment from the black path of ink container to printhead 811 ink supply, and be equal among second embodiment from the black path of ink container 540 to printhead 811 ink supply, that is the ink supply path 530 that, comprises circulating path 531 and access path 532.
As mentioned above, Figure 37 A illustrates the structure with negative pressure applying unit, and this negative pressure applying unit is included in pump P and the valve V among the ink supply path L1 that connects ink container T and printhead H.That is to say that Figure 37 A illustrates the common structure of first and second embodiment conceptually.Therefore, Figure 37 A saved off gas system 38 among first embodiment, negative pressure chamber 30,40 the black return path and collect the path from printhead 811 to ink container from covering 44 China ink.Similarly, omitted circulating path 531 among second embodiment, flow control valve 503, from printhead 811 to ink container 40 black return path, bubble decontamination chamber 532, off gas system 38 and collect the path from covering 44 China ink.
The negative pressure applying unit of ink system shown in Figure 37 A by comprising pump P and valve V is applied to China ink among the black path L1 with pressure (comprising negative pressure and malleation), negative pressure is applied to the inside of printhead H.The negative pressure applying unit can comprise at least one among pump P and the valve V.Because ink supply path L1 can apply the two to printhead H execution ink supply and negative pressure, volume is little so this ink system can be constructed simply.
Figure 37 B is the concept map that the ink system structure is shown, with the different installation sites that are pump P and valve V of Figure 37 A.In this example, valve V is installed among the L1 of ink supply path, and pump P is installed among the return path L2, by return path L2 China ink is turned back to ink container T from printhead H.Pump P exerts pressure (comprising negative pressure and malleation) to stay negative pressure in printhead H to the China ink of return path L2.Ground relevant with the control of pump P control valve V makes and can impose high response, high-precision negative pressure to printhead H to regulate the black flow among the ink supply path L1.The negative pressure applying unit can comprise at least one among pump P and the valve V.Pump P can be used as the function of pump 548 among the function of pump 48 among first embodiment or second embodiment.
The negative pressure applying unit can be arranged among the L1 of ink supply path or among the return path L2 or in the two.Unique requirement is the negative pressure applying unit to be installed in be communicated to ink container in the black path of printhead and can apply adjustable negative pressure to printhead.
[the 4th embodiment]
Figure 38 is the summary cutaway view that the example structure of pump P among Figure 37 A and Figure 37 B is shown.
Pump P in this example is the gear pump similar to the mechanical pump 36 of first embodiment.Yet, be that with orthobaric volume type gear pump different this gear pump has between the inner peripheral surface of the tooth top that is formed on gear G1, G2 and housing (casing) C the gap as ink passage LA.More specifically, housing C within it the diameter parts of surface with increasing with the tooth of housing C and gear G1, G2 with and flow change according to the velocity of rotation of gear G1, G2.When gear G1, G2 in Figure 38 during direction of arrow high speed rotating, powerful masterpiece produces big negative pressure in order to upstream to transmit China ink in the downstream.When gear G1, G2 slowly ran along the direction of arrow, work was small in order to the power that upstream transmits China ink, produced little negative pressure in the downstream.By the velocity of rotation of control pump P, can the negative pressure of regulating action on China ink.
The setting of ink passage and the control of velocity of rotation can make pump P have the two feature of constant volume pump and constant pressure pump.Can between gear and housing, form the groove that passes through in gap with about 10 μ m to 1mm.
Only need be formed on the position of the conveying capacity (delivery force) that is subjected to according to the gear velocity of rotation by groove (pass-through channel), and in present embodiment, can have desired structure the used structure.For example, the part of tooth top can be cut to form as the gap of passing through groove between gear and the shell inner surface.
[the 5th embodiment]
Figure 39 illustrates the key diagram that comprises the example structure of component module in the printer complex illustrated in figures 1 and 2.
Printer complex as depicted in figs. 1 and 2 is suitable as the industrial printer that can print on large scale pictorial poster and cardboard.Can handle the big object that will print by increasing printer unit 166 (166-1 to 166-5).When the object that will print hour, can reduce the quantity of printer unit 116 in the operation and do not reduce the quantity of the printer unit 116 of installation.Perhaps can reduce the quantity of the printer unit 116 of installation.Between printer unit 116, can have the big difference of frequency of utilization, so printer unit 116 preferably can single repairing or replacement according to its installation site.
From this point, printer unit 116 is configured to print module M in this example, and each module is by the print unit Y1 that comprises printhead and comprise that the ink-feeding device Y2 of ink container forms.The concrete structure of print module M will be described at the situation of printer unit 116 among first and second embodiment.
Print unit Y1 comprises four printheads 811 (811K, 811C, 811M, 811Y) in the printer unit 116 and the printhead control circuit 810 (referring to Fig. 3) in the printer unit 116.Print unit Y1 also comprises the circuit board 60 of Fig. 9,, is used for the control system of Fig. 3 of each printer unit 116 that is.Also print unit Y1 can be configured to comprise cover 44, with lid 44 control modules of adding a cover the mechanism of printhead and controlling this mechanism.
Ink donor unit Y2 comprises the ink system that is used for each printer unit 116, that is, and and the ink system of Figure 27 among the ink system of Fig. 9 or second embodiment among first embodiment.The main ink container that is connected jointly with a plurality of printer units 116 can be connected jointly with a plurality of ink-feeding device Y2.Can main ink container be set at least one ink donor unit Y2.In addition, ink donor unit Y2 can comprise the power circuit that is used for each printer unit 116.For high accuracy detects internal pressure, preferably near printhead 811, the pressure sensor 49 of first embodiment and the pressure sensor 544 of second embodiment are placed print unit Y1 together with printhead 811.Also these pressure sensors can be included among the ink donor unit Y2.
These unit Y1 is connected with the pipe that forms black path by the cable that comprises holding wire and power line with Y2, and unites to form print module M.As mentioned above, place module by the mechanism that will be used for each printer unit 116 (comprising control system and ink system), can more clearly guarantee the independence of single printer unit 116, make each printer unit 116 is carried out installation, removal, replacement and repairing.When as depicted in figs. 1 and 2 printer complex during as industrial printer, this is very favorable.
Yet, notice that unit Y1, Y2 needn't can be used as unit separately as a printer module M.In this case, only need to be configured to make them to be connected to each other or to disconnect unit Y1, Y2.This configuration allows other installation, removal, replacement and repairing, this proof when as depicted in figs. 1 and 2 printer complex more favourable during as industrial printer.
(further feature)
A plurality of printer units that this embodiment adopts are independently of one another.That is to say that printer unit is aspect space (layout) and also independently of one another aspect signal system and the ink system.Therefore, according to the mode of operation of each printer unit, that is, the data volume of printing can realize the supply of China ink of suitable volume and suitable recovery operation.Can also control printer unit independently discretely and with other printer unit with image formation system and image processing system in all cases.Can also buy or handle single printer unit.
Notice to the invention is not restricted to the foregoing description, in the scope that does not break away from spirit of the present invention, can make modification.
For example, China ink can supply to the one or more printheads that use in the printer unit.Printer unit is not limited to any specific print system or type, for example can be the full line type (full line type) or the serial scan type by printing along main scanning direction mobile print head of not mobile print head ground printing.The unique requirement of the present invention is by using pump and valve to come ACTIVE CONTROL China ink negative pressure so that supply to the ability of negative regulation of the China ink of printhead.
The application requires in the Japanese patent application No.2004-163730 of submission on June 1st, 2004 and the priority of No.2004-163731, and its full content is contained in this by reference.
Claims
(according to the modification of the 19th of treaty)
1. (after revising) a kind of ink-feeding device is used for China ink is supplied to printhead from ink container, and this ink-feeding device comprises:
Test section is used for detecting the black pressure of printhead;
The negative pressure applying unit is used in the mode that can regulate negative pressure the inside of described printhead being applied negative pressure, and described negative pressure applying unit is installed in the black communication path of inside of the inside that is communicated with described ink container and described printhead; And
Control part is used for controlling described negative pressure applying unit based on the described black pressure that is detected by described test section, is applied to the described negative pressure of the inside of described printhead with adjusting;
Wherein, described test section is installed near the described printhead there not being the described black pressure in the described printhead of pressure loss ground detection, and forms print unit together with described printhead.
2. ink-feeding device according to claim 1 is characterized in that, described black communication path is the ink supply path that China ink is supplied to described printhead from described ink container.
3. ink-feeding device according to claim 1 is characterized in that, described black communication path is to make China ink turn back to the black return path of described ink container from described printhead.
4. (revise back) ink-feeding device according to claim 1 is characterized in that, also comprises the communication path of the inside of the inside that is communicated with described ink container and described printhead;
Described test section is installed in first straight line portion that flows to the described communication path of described ink container from described printhead.
5. (after revising) ink-feeding device according to claim 4 is characterized in that described communication path is described black communication path.
6. ink-feeding device according to claim 1 is characterized in that, described control part is controlled described negative pressure applying unit based on the China ink consumption of described printhead time per unit.
7. ink-feeding device according to claim 1 is characterized in that, described control part is controlled described negative pressure applying unit based on the printing duty of the image that uses described printhead prints.
8. ink-feeding device according to claim 1 is characterized in that, described negative pressure applying unit comprises pump and the valve that is installed in the described black communication path, and described control part is controlled be mutually related described pump and described valve.
9. ink-feeding device according to claim 8 is characterized in that, described pump can change the direction that the China ink in the described black communication path is applied pressure.
10. ink-feeding device according to claim 8 is characterized in that, described pump is the gear pump with ink passage, and described ink passage is formed on the position that is subjected to corresponding to the conveying capacity of the velocity of rotation of described gear.
11. ink-feeding device according to claim 8 is characterized in that, described black communication path comprises circulating path and access path, and described China ink can be by described circulating path circulation, and described access path is communicated with described circulating path and described printhead;
Described pump is installed in the described circulating path;
Described valve is installed at least one path in described circulating path and the described access path.
12. ink-feeding device according to claim 10 is characterized in that, described valve is installed in the described circulating path, can regulate the flow resistance of described China ink.
13. ink-feeding device according to claim 8 is characterized in that, is right after after the printing of using described printhead finishes, described control part is closed described valve.
14. ink-feeding device according to claim 8 is characterized in that, described control part is controlled described pump and described valve according to the user mode that can use described printhead to print the PRN device of operation.
15. ink-feeding device according to claim 1 is characterized in that, also comprises being installed in the described black communication path described printhead is applied the predetermined negative pressure applying unit of predetermined negative pressure.
16. ink-feeding device according to claim 15, it is characterized in that described predetermined negative pressure applying unit has in negative pressure chamber that is communicated with described black communication path and a part that is formed on described negative pressure chamber at least and the movable link of the outside application of force of scheduled biasing force.
17. ink-feeding device according to claim 1 is characterized in that, described printhead is used in the synthetic print system that comprises a plurality of PRN devices.
18. ink-feeding device according to claim 1 is characterized in that, described printhead is the ink jet-print head that can spray China ink.
(19. deleting)
(20. deleting)
(21. deleting)
22. (replenishing) a kind of ink-feeding device is used for China ink is supplied to printhead from ink container, this ink-feeding device comprises:
Test section is used for detecting the black pressure of printhead;
The negative pressure applying unit is used in the mode that can regulate negative pressure the inside of described printhead being applied negative pressure, and described negative pressure applying unit is installed in the black communication path of inside of the inside that is communicated with described ink container and described printhead; And
Control part is used for controlling described negative pressure applying unit based on the described black pressure that is detected by described test section, is applied to the described negative pressure of the inside of described printhead with adjusting;
Wherein, described negative pressure applying unit comprise can adjustable ground to the pump of the internal pressurization of described black communication path and decompression and be installed in described printhead and described pump between described black communication path in valve.
23. (replenishing) a kind of ink-feeding device is used for China ink is supplied to printhead from ink container, this ink-feeding device comprises:
Test section is used for detecting the black pressure of printhead;
The negative pressure applying unit is used in the mode that can regulate negative pressure up or down the inside of described printhead being applied negative pressure, and described negative pressure applying unit is installed in the black communication path of inside of the inside that is communicated with described ink container and described printhead; And
Control part is used for controlling described negative pressure applying unit based on the described black pressure that is detected by described test section, to regulate the described negative pressure of the inside that is applied to described printhead up or down.
24. (replenishing) a kind of PRN device can use for the printhead prints image that China ink is arranged, described PRN device has any described ink-feeding device in the claim 1～18,22 and 23.
25. (replenishing) a kind of ink supply method is used for China ink is supplied to printhead from ink container, this ink supply method comprises the steps:
Use is used in the mode that can regulate negative pressure the inside of described printhead being applied the negative pressure applying unit of negative pressure, and described negative pressure applying unit is installed in the black communication path of inside of the inside that is communicated with described ink container and described printhead;
Use is installed near the test section of described printhead there not to be the black pressure in the described printhead of pressure loss ground detection, and described test section forms print unit together with described printhead; And
Controlling described negative pressure applying unit based on the described black pressure that is detected by described test section maintains in the preset range so that will be applied to the negative pressure of described printhead during the printing of using described printhead.
26. (replenishing) ink supply method according to claim 25 is characterized in that, described negative pressure applying unit can be regulated the described negative pressure of the inside that is applied to described printhead up or down;
During the described printing of using described printhead, control described negative pressure applying unit to regulate the described negative pressure of the inside that is applied to described printhead up or down.
27. (replenishing) a kind of Method of printing is used to use the printhead prints image that supplies to have China ink from ink container, described Method of printing comprises the steps:
Use is used in the mode that can regulate negative pressure the inside of described printhead being applied the negative pressure applying unit of negative pressure, and described negative pressure applying unit is installed in the black communication path of inside of the inside that is communicated with described ink container and described printhead;
Use is installed near the described printhead test section does not have black pressure in the described printhead of pressure loss ground detection, and described test section forms print unit together with described printhead; And
Controlling described negative pressure applying unit based on the described black pressure that is detected by described test section maintains in the preset range so that will be applied to the negative pressure of described printhead during the printing of using described printhead.
28. (replenishing) Method of printing according to claim 27 is characterized in that, described negative pressure applying unit can be regulated the described negative pressure of the inside that is applied to described printhead up or down;
During the described printing of using described printhead, control described negative pressure applying unit to regulate the described negative pressure of the inside that is applied to described printhead up or down.
Claims (21)
1. an ink-feeding device is used for China ink is supplied to printhead from ink container, and this ink-feeding device comprises:
The negative pressure applying unit is used for described printhead is applied adjustable negative pressure, and described negative pressure applying unit is installed in the black communication path that is communicated with described ink container and described printhead; And
Control part is used to control described negative pressure applying unit to regulate the described negative pressure that described printhead is applied.
2. ink-feeding device according to claim 1 is characterized in that, described black communication path is the ink supply path that China ink is supplied to described printhead from described ink container.
3. ink-feeding device according to claim 1 is characterized in that, described black communication path is to make China ink turn back to the black return path of described ink container from described printhead.
4. ink-feeding device according to claim 1 is characterized in that, also comprises the test section of the pressure that is used for detecting described black communication path;
Described control part is controlled described negative pressure applying unit based on the testing result of described test section.
5. ink-feeding device according to claim 1 is characterized in that, also comprises the test section of the pressure that is used for detecting described printhead;
Described control part is controlled described negative pressure applying unit based on the testing result of described test section.
6. ink-feeding device according to claim 1 is characterized in that, described control part is controlled described negative pressure applying unit based on the China ink consumption of described printhead time per unit.
7. ink-feeding device according to claim 1 is characterized in that, described control part is controlled described negative pressure applying unit based on the printing duty of the image that uses described printhead prints.
8. ink-feeding device according to claim 1 is characterized in that, described negative pressure applying unit comprises pump and the valve that is installed in the described black communication path, and described control part is controlled be mutually related described pump and described valve.
9. ink-feeding device according to claim 8 is characterized in that, described pump can change the direction that the China ink in the described black communication path is applied pressure.
10. ink-feeding device according to claim 8 is characterized in that, described pump is the gear pump with ink passage, and described ink passage is formed on the position that is subjected to corresponding to the conveying capacity of the velocity of rotation of described gear.
11. ink-feeding device according to claim 8 is characterized in that, described black communication path comprises circulating path and access path, and described China ink can be by described circulating path circulation, and described access path is communicated with described circulating path and described printhead;
Described pump is installed in the described circulating path;
Described valve is installed at least one path in described circulating path and the described access path.
12. ink-feeding device according to claim 10 is characterized in that, described valve is installed in the described circulating path, can regulate the flow resistance of described China ink.
13. ink-feeding device according to claim 8 is characterized in that, is right after after the printing of using described printhead finishes, described control part is closed described valve.
14. ink-feeding device according to claim 8 is characterized in that, described control part is controlled described pump and described valve according to the user mode that can use described printhead to print the PRN device of operation.
15. ink-feeding device according to claim 1 is characterized in that, also comprises being installed in the described black communication path described printhead is applied the predetermined negative pressure applying unit of predetermined negative pressure.
16. ink-feeding device according to claim 15, it is characterized in that described predetermined negative pressure applying unit has in negative pressure chamber that is communicated with described black communication path and a part that is formed on described negative pressure chamber at least and the movable link of the outside application of force of scheduled biasing force.
17. ink-feeding device according to claim 1 is characterized in that, described printhead is used in the synthetic print system that comprises a plurality of PRN devices.
18. ink-feeding device according to claim 1 is characterized in that, described printhead is the ink jet-print head that can spray China ink.
19. a PRN device can use for the printhead prints image that China ink is arranged, described PRN device has any described ink-feeding device in the claim 1 to 17, with to described printhead ink supply.
20. an ink supply method is used for China ink is supplied to printhead from ink container, this ink supply method comprises the steps:
Use is used for described printhead is applied the negative pressure applying unit of adjustable negative pressure, and described negative pressure applying unit is installed in the black communication path that is communicated with described ink container and described printhead; And
During the printing of using described printhead, control described negative pressure applying unit and maintain in the preset range so that will be applied to the negative pressure of described printhead.
21. a Method of printing is used to use the printhead prints image from the ink container ink supply, this Method of printing comprises the steps:
Use applies the negative pressure applying unit of adjustable negative pressure to described printhead, and described negative pressure applying unit is installed in the black communication path that is communicated with described ink container and described printhead; And
During the printing of using described printhead, control described negative pressure applying unit and maintain in the preset range so that will be applied to the negative pressure of described printhead.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP163731/2004 | 2004-06-01 | ||
| JP2004163731A JP4716678B2 (en) | 2004-06-01 | 2004-06-01 | Ink supply apparatus, ink supply method, and printing apparatus |
| JP2004163730A JP4716677B2 (en) | 2004-06-01 | 2004-06-01 | Ink supply apparatus, recording apparatus, ink supply method, and recording method |
| JP163730/2004 | 2004-06-01 | ||
| PCT/JP2005/010058 WO2005118300A1 (en) | 2004-06-01 | 2005-06-01 | Ink supplying device, recording device, ink supplying method and recording method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1960879A true CN1960879A (en) | 2007-05-09 |
| CN1960879B CN1960879B (en) | 2010-12-15 |
Family
ID=35495775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800178802A Expired - Fee Related CN1960879B (en) | 2004-06-01 | 2005-06-01 | Ink supplying device, recording device, ink supplying method and recording method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4716677B2 (en) |
| CN (1) | CN1960879B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529392A (en) * | 2010-10-20 | 2012-07-04 | 施乐公司 | Method and system for ink delivery and purged ink recovery in an inkjet printer |
| CN101462406B (en) * | 2007-12-21 | 2012-10-10 | 精工爱普生株式会社 | Liquid supply device and liquid ejecting apparatus |
| CN101456291B (en) * | 2007-12-11 | 2012-11-07 | 精工爱普生株式会社 | Liquid supply device and liquid ejecting apparatus |
| CN104999797A (en) * | 2014-04-22 | 2015-10-28 | 东京应化工业株式会社 | Cock valve, liquid supplying method, liquid supplying device, and coating device |
| CN105034604A (en) * | 2014-04-30 | 2015-11-11 | 佳能株式会社 | Pressure regulating unit, liquid supplying apparatus, and liquid ejecting apparatus |
| CN105082754A (en) * | 2014-05-16 | 2015-11-25 | 株式会社东芝 | Ink jet head and ink jet printer |
| CN106042650A (en) * | 2015-04-03 | 2016-10-26 | 佳能株式会社 | Imprint material discharging device |
| CN106494088A (en) * | 2016-09-10 | 2017-03-15 | 童舟 | Ink-supplying ink cartridge |
| CN107471829A (en) * | 2016-06-08 | 2017-12-15 | 株式会社村田制作所 | Ink-jet printing apparatus |
| CN107718889A (en) * | 2016-08-12 | 2018-02-23 | 精工爱普生株式会社 | Fluid Supplying apparatus and liquid injection apparatus |
| CN109203717A (en) * | 2017-07-07 | 2019-01-15 | 佳能株式会社 | The control method of liquid discharge apparatus |
| CN109484025A (en) * | 2017-09-13 | 2019-03-19 | 精工爱普生株式会社 | The control method of liquid ejection apparatus and liquid ejection apparatus |
| CN110949009A (en) * | 2018-09-26 | 2020-04-03 | 海德堡印刷机械股份公司 | Method for printing images with liquid ink |
| CN111469554A (en) * | 2019-01-23 | 2020-07-31 | 精工爱普生株式会社 | Liquid ejecting apparatus |
| CN115315354A (en) * | 2020-03-31 | 2022-11-08 | 兄弟工业株式会社 | Ink jet recording apparatus |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008265125A (en) * | 2007-04-19 | 2008-11-06 | Konica Minolta Medical & Graphic Inc | Ink jet printer |
| JP2010076414A (en) | 2007-12-11 | 2010-04-08 | Seiko Epson Corp | Liquid supply device and liquid jetting apparatus |
| JP2010076412A (en) | 2007-12-11 | 2010-04-08 | Seiko Epson Corp | Liquid supply device and liquid jetting apparatus |
| JP2010076413A (en) | 2007-12-11 | 2010-04-08 | Seiko Epson Corp | Liquid supply device and liquid jetting apparatus |
| JP5217583B2 (en) * | 2008-04-04 | 2013-06-19 | セイコーエプソン株式会社 | Fluid supply device, fluid discharge device, and fluid supply method |
| JP5015200B2 (en) * | 2008-09-02 | 2012-08-29 | 株式会社リコー | Image forming apparatus |
| JP5257139B2 (en) | 2009-02-26 | 2013-08-07 | 株式会社リコー | Image forming apparatus |
| JP2010221491A (en) * | 2009-03-23 | 2010-10-07 | Seiko Epson Corp | Liquid supply apparatus and liquid ejecting apparatus |
| JP5282656B2 (en) * | 2009-05-13 | 2013-09-04 | 株式会社リコー | Image forming apparatus |
| JP5282654B2 (en) * | 2009-05-13 | 2013-09-04 | 株式会社リコー | Image forming apparatus |
| JP5223780B2 (en) * | 2009-05-29 | 2013-06-26 | 株式会社リコー | Image forming apparatus |
| JP5299179B2 (en) | 2009-09-02 | 2013-09-25 | 株式会社リコー | Image forming apparatus |
| JP5502419B2 (en) * | 2009-10-01 | 2014-05-28 | セーレン株式会社 | Air discharging method and image recording method |
| JP5437773B2 (en) * | 2009-10-29 | 2014-03-12 | エスアイアイ・プリンテック株式会社 | Liquid ejecting head, liquid ejecting apparatus, and method of manufacturing liquid ejecting head |
| JP5440130B2 (en) * | 2009-11-27 | 2014-03-12 | 株式会社リコー | Image forming apparatus |
| JP5509822B2 (en) | 2009-12-07 | 2014-06-04 | 株式会社リコー | Image forming apparatus |
| JP5381678B2 (en) | 2009-12-15 | 2014-01-08 | 株式会社リコー | Image forming apparatus |
| JP5471599B2 (en) | 2010-03-02 | 2014-04-16 | 株式会社リコー | Image forming apparatus |
| JP5471869B2 (en) * | 2010-06-16 | 2014-04-16 | コニカミノルタ株式会社 | Inkjet recording device |
| JP5776148B2 (en) | 2010-08-18 | 2015-09-09 | 株式会社リコー | Image forming apparatus |
| US8506061B2 (en) * | 2010-08-23 | 2013-08-13 | Xerox Corporation | Method and apparatus for purging and supplying ink to an inkjet printing apparatus |
| US9724926B2 (en) | 2010-10-19 | 2017-08-08 | Hewlett-Packard Development Company, L.P. | Dual regulator print module |
| JP5874518B2 (en) * | 2012-05-01 | 2016-03-02 | コニカミノルタ株式会社 | Inkjet recording device |
| JP5919211B2 (en) * | 2013-03-11 | 2016-05-18 | 東芝テック株式会社 | Liquid ejection device |
| JP6030523B2 (en) * | 2013-09-10 | 2016-11-24 | 東芝テック株式会社 | Liquid discharge device and liquid circulation method of liquid discharge device |
| JP6553727B2 (en) * | 2015-01-20 | 2019-07-31 | ヒューレット−パッカード デベロップメント カンパニー エル．ピー．Ｈｅｗｌｅｔｔ‐Ｐａｃｋａｒｄ Ｄｅｖｅｌｏｐｍｅｎｔ Ｃｏｍｐａｎｙ， Ｌ．Ｐ． | Liquid / gas separator |
| JP6468044B2 (en) * | 2015-04-14 | 2019-02-13 | セイコーエプソン株式会社 | Printing apparatus and maintenance method in printing apparatus |
| JP2017001374A (en) * | 2015-06-16 | 2017-01-05 | 東芝テック株式会社 | Droplet discharge device and liquid circulation device |
| JP7247637B2 (en) | 2019-02-15 | 2023-03-29 | セイコーエプソン株式会社 | liquid injector |
| JP2020142413A (en) | 2019-03-05 | 2020-09-10 | セイコーエプソン株式会社 | Damper unit and liquid jet device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09193414A (en) * | 1996-01-16 | 1997-07-29 | Canon Inc | Liquid holding and supplying apparatus and method therefor |
| JP3676089B2 (en) * | 1998-08-05 | 2005-07-27 | 東芝テック株式会社 | Inkjet printer |
| JP2001038920A (en) * | 1999-07-27 | 2001-02-13 | Canon Inc | Ink-jet recording apparatus |
| US6428156B1 (en) * | 1999-11-02 | 2002-08-06 | Hewlett-Packard Company | Ink delivery system and method for controlling fluid pressure therein |
| JP2002321379A (en) * | 2001-04-24 | 2002-11-05 | Canon Inc | Ink jet recording device and air vent method therefor |
| JP2002355990A (en) * | 2001-05-31 | 2002-12-10 | Canon Aptex Inc | Apparatus and method for ink jet recording |
| JP2003341028A (en) * | 2002-05-30 | 2003-12-03 | Konica Minolta Holdings Inc | Ink jet printer |
-
2004
- 2004-06-01 JP JP2004163730A patent/JP4716677B2/en not_active Expired - Fee Related
-
2005
- 2005-06-01 CN CN2005800178802A patent/CN1960879B/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456291B (en) * | 2007-12-11 | 2012-11-07 | 精工爱普生株式会社 | Liquid supply device and liquid ejecting apparatus |
| CN101462406B (en) * | 2007-12-21 | 2012-10-10 | 精工爱普生株式会社 | Liquid supply device and liquid ejecting apparatus |
| CN102529392A (en) * | 2010-10-20 | 2012-07-04 | 施乐公司 | Method and system for ink delivery and purged ink recovery in an inkjet printer |
| CN102529392B (en) * | 2010-10-20 | 2015-01-28 | 施乐公司 | System for ink delivery and purged ink recovery in an inkjet printer |
| CN104999797A (en) * | 2014-04-22 | 2015-10-28 | 东京应化工业株式会社 | Cock valve, liquid supplying method, liquid supplying device, and coating device |
| CN104999797B (en) * | 2014-04-22 | 2018-05-29 | 东京应化工业株式会社 | Plug valve, liquid supply method, fluid Supplying apparatus and applying device |
| TWI648497B (en) * | 2014-04-22 | 2019-01-21 | 日商東京應化工業股份有限公司 | Plug valve, method of supplying liquid, liquid supplying device, and coating applicator |
| CN105034604A (en) * | 2014-04-30 | 2015-11-11 | 佳能株式会社 | Pressure regulating unit, liquid supplying apparatus, and liquid ejecting apparatus |
| CN105082754A (en) * | 2014-05-16 | 2015-11-25 | 株式会社东芝 | Ink jet head and ink jet printer |
| CN107187204A (en) * | 2014-05-16 | 2017-09-22 | 株式会社东芝 | Ink gun |
| CN107187204B (en) * | 2014-05-16 | 2019-01-11 | 株式会社东芝 | Ink gun |
| CN106042650A (en) * | 2015-04-03 | 2016-10-26 | 佳能株式会社 | Imprint material discharging device |
| CN106042650B (en) * | 2015-04-03 | 2018-01-02 | 佳能株式会社 | Impression materials discharger and Embosser |
| CN107471829B (en) * | 2016-06-08 | 2019-08-06 | 株式会社村田制作所 | Ink-jet printing apparatus |
| CN107471829A (en) * | 2016-06-08 | 2017-12-15 | 株式会社村田制作所 | Ink-jet printing apparatus |
| CN107718889A (en) * | 2016-08-12 | 2018-02-23 | 精工爱普生株式会社 | Fluid Supplying apparatus and liquid injection apparatus |
| CN107718889B (en) * | 2016-08-12 | 2020-10-30 | 精工爱普生株式会社 | Liquid supply device and liquid ejecting apparatus |
| CN106494088A (en) * | 2016-09-10 | 2017-03-15 | 童舟 | Ink-supplying ink cartridge |
| CN109203717A (en) * | 2017-07-07 | 2019-01-15 | 佳能株式会社 | The control method of liquid discharge apparatus |
| CN109484025A (en) * | 2017-09-13 | 2019-03-19 | 精工爱普生株式会社 | The control method of liquid ejection apparatus and liquid ejection apparatus |
| CN109484025B (en) * | 2017-09-13 | 2021-08-24 | 精工爱普生株式会社 | Liquid ejecting apparatus and method of controlling liquid ejecting apparatus |
| CN110949009A (en) * | 2018-09-26 | 2020-04-03 | 海德堡印刷机械股份公司 | Method for printing images with liquid ink |
| CN110949009B (en) * | 2018-09-26 | 2021-12-31 | 海德堡印刷机械股份公司 | Method for printing images with liquid ink |
| CN111469554A (en) * | 2019-01-23 | 2020-07-31 | 精工爱普生株式会社 | Liquid ejecting apparatus |
| CN111469554B (en) * | 2019-01-23 | 2023-01-06 | 精工爱普生株式会社 | Liquid ejecting apparatus |
| CN115315354A (en) * | 2020-03-31 | 2022-11-08 | 兄弟工业株式会社 | Ink jet recording apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4716677B2 (en) | 2011-07-06 |
| CN1960879B (en) | 2010-12-15 |
| JP2005342960A (en) | 2005-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1960879A (en) | Ink supplying device, recording device, ink supplying method and recording method | |
| CN1292907C (en) | Ink jetting recorder and its operation method | |
| CN1072114C (en) | Ink jet printing method and apparatus | |
| CN1079735C (en) | Image recording apparatus utilizing serial recording head and image recording method therefor | |
| CN1299239C (en) | Image processor and method for recording products | |
| CN1207656C (en) | Control to drive paramateters of printing head | |
| CN1798656A (en) | Image forming device, printer complex system and medium conveying device for the device, information processing unit for supplying image data to the image forming device, and image forming system and | |
| CN1918895A (en) | Combination printer and image reader in l-shaped configuration | |
| CN101077662A (en) | Ink jet recording apparatus and recording method | |
| CN1657286A (en) | Recording apparatus and recording method | |
| CN1473706A (en) | Liquid jet device and liquid jet method | |
| CN1807097A (en) | Liquid discharging apparatus and liquid discharging method | |
| CN101031423A (en) | Image forming apparatus, data generating apparatus, data generating program, data generating method, and recording medium | |
| CN1561291A (en) | Nozzle head, nozzle head holder, and droplet jet patterning device | |
| CN1993231A (en) | Image processing method, image processing program, and image forming apparatus | |
| CN1189321C (en) | Image printing device, control method, storing medium and program | |
| CN1684829A (en) | Liquid-discharging device and printing system | |
| CN1305680C (en) | Liquid discharging device and liquid discharging method | |
| CN1671557A (en) | Recording apparatus, recording method, program, computer system | |
| CN1750935A (en) | Valve device and method for manufacturing valve device,pressure regulator, carriage, liquid ejecting apparatus | |
| CN1832861A (en) | Liquid container, sub tank, liquid discharge apparatus, liquid supply apparatus, and imaging apparatus | |
| CN1738714A (en) | Liquid emitting device and liquid emitting method | |
| CN1655938A (en) | Rotor, drive conversion device, cleaning device, wiping device, and liquid injection device | |
| CN1914036A (en) | Printer, printing method, program and printing system | |
| CN1832860A (en) | Liquid injector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20170601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |