CN104057731B - A kind of ink-jet printer signal synchronizes tapping plate and method for transmitting signals - Google Patents
A kind of ink-jet printer signal synchronizes tapping plate and method for transmitting signals Download PDFInfo
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- CN104057731B CN104057731B CN201410314921.5A CN201410314921A CN104057731B CN 104057731 B CN104057731 B CN 104057731B CN 201410314921 A CN201410314921 A CN 201410314921A CN 104057731 B CN104057731 B CN 104057731B
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Abstract
The invention discloses a kind of ink-jet printer signal and synchronize tapping plate and method for transmitting signals, it is characterized in that, one end arranges receiving port and receives detection signal, the other end arranges output port and connects nozzle control panel, output detections signal, signal synchronizes to arrange FPGA inside tapping plate, the detection signal of reception is tapped at least two passages identical detection signal at synchronization by FPGA, at least two access detection signals after tap are run simultaneously and are transmitted at least two nozzle control panel, in order to control nozzle printing by output port.It is multi channel signals that signal synchronizes tapping plate by detection signal tap, multiple nozzle control panel can be simultaneously connected with, thus control more shower nozzle and carry out air brushing, multiple shower nozzles are carried out different modes arrangement can increase printing fabric width, improve print speed, strengthen print resolution or realize multicolour print, synchronize to receive signal with seasonal each nozzle control panel, avoid certain nozzle printing that is asynchronous due to signal and that cause delayed, it is to avoid to affect air brushing quality.
Description
Technical field
The present invention relates to a kind of ink-jet printer signal and synchronize tapping plate and method for transmitting signals, in particular relate to a kind of multiple channel signal running simultaneously of simultaneously being tapped into by detection signal and be transferred to the signal that multiple nozzle control panel uses and synchronize tapping plate and method for transmitting signals.
Background technology
Ink-jet printer can be divided into two classes, a class to be that shower nozzle moves back and forth injection picture and text according to the mode printing picture and text；Another kind of is that the mode that shower nozzle does not moves, print media moves sprays picture and text, i.e. Onepass mode generally prints variable data, uses this kind of ink-jet printer during such as bar code, billing information.Onepass mode prints chart drive speed quickly, can reach 200m/s or faster print speed, to ensure higher print quality simultaneously, and print resolution is up to 600dpi.In this kind of print procedure, it is typically to be stored in PC main frame as the image, text and data printing target, this image, text and data includes image or text, image, text and data is transformed to the transform data of printable form by raster image processing, and the printable data after raster image processing is passed to shower nozzle and carried out figure message printing the most at last.Nozzle control panel is the ink-jet printer control system connector circuit board to shower nozzle, and every kind of shower nozzle is required for the interface circuit of oneself, and one end of nozzle control panel connects shower nozzle, and the other end connects master board.
According to real needs, sometimes will be by end to end for multiple shower nozzles employing parallel arranged mode to improve print span, sometimes to use serial arrangement mode to improve print speed the head and the tail alignment of multiple shower nozzles, use difference arrangement mode to improve print resolution sometimes for by multiple shower nozzles head and the tail, or when needs print multicolour, it is also desirable to the ink that multiple shower nozzles connect different color is carried out air brushing.When meeting above demand and use multiple shower nozzle, master control borad can connect multiple nozzle control panel, then be connected its shower nozzle controlled by each nozzle control panel and print.When printing on print media, multiple shower nozzles carry out spraying ink droplet and complete.nullWhen each shower nozzle starts to spray ink droplet，It is by the detection signal deciding received，One of them signal is the print media start of Page position signalling detected by sensor，Another signal is the grating signal detected by encoder，After the signal of detection is transferred to nozzle control panel，Main frame is sent by CAN and starts print command，Ink-jet is started in order to control shower nozzle，Receive address according to plate and beginning print command is first passed to first nozzle control panel，Beginning print command is passed to second nozzle control panel the most again，By that analogy，Until beginning print command is passed to last nozzle control panel，Due to the different nozzle control panel beginning print commands that successively Receiving Host sends，Therefore the moment receiving beginning print command there will be a small amount of time interval，So that the beginning print command that the shower nozzle that nozzle control panel connects receives is asynchronous，Likely can receive after causing and start the shower nozzle injection delay of print command and affect air brushing effect.In like manner, main frame also can send time-out printing order by CAN and stop print command, is required for ensureing that each nozzle control panel is simultaneously received order, and each shower nozzle of guarantee receives the synchronicity of order, to guarantee air brushing quality.
Summary of the invention
For problem above, it is an object of the invention to provide a kind of ink-jet printer signal that detection signal synchronizes to tap into multi channel signals and synchronize tapping plate and method for transmitting signals.
For achieving the above object, the present invention proposes a kind of ink-jet printer signal and synchronizes tapping plate, it is characterized in that, one end arranges receiving port and receives detection signal, the other end arranges output port and connects nozzle control panel, output detections signal, signal synchronizes to arrange FPGA inside tapping plate, the detection signal of reception is run simultaneously and is tapped at least two passages identical detection signal by FPGA, output port will tap after at least two access detection signal synchronous transfer at least two nozzle control panel, in order to control nozzle printing.
In above-mentioned ink-jet printer signal synchronizes tapping plate, described receiving port includes encoder interfaces and sensor interface, and encoder interfaces is for receiving the grating signal of encoder detection, and sensor interface is for receiving the start of Page position signalling of sensor detection.
In above-mentioned ink-jet printer signal synchronizes tapping plate, encoder can be detected the precision output of signal boost to four times by described FPGA.
In above-mentioned ink-jet printer signal synchronizes tapping plate, described FPGA tapped off signal speed is nanosecond.
In above-mentioned ink-jet printer signal synchronizes tapping plate, described FPGA connects CAN passage, starts printing, time-out printing for what Receiving Host sent and cancels the operation setting printed.
In above-mentioned ink-jet printer signal synchronizes tapping plate, described output port is at least provided with two, the quantity of output port is equal with the port number after tapping plate tapped off signal, output port quantity is more than or equal to nozzle control panel quantity, described nozzle control panel connects shower nozzle, shower nozzle quantity is determined by nozzle control panel, and shower nozzle quantity is at least one.
In above-mentioned ink-jet printer signal synchronizes tapping plate, described output port is controlled individually the delay disposal carrying out start of Page position signalling.
The present invention proposes this kind of signal and synchronizes the method for transmitting signals of tapping plate, it is characterized in that, the step of signal transmission particularly as follows: a) signal synchronize the encoder interfaces on tapping plate and receive the grating signal of encoder detection, signal synchronizes the sensor interface on tapping plate and receives the print media start of Page position signalling of sensor detection；B) grating signal of reception is run simultaneously with start of Page position signalling and is tapped into identical at least two passage grating signals and start of Page position signalling respectively by the FPGA on signal synchronization tapping plate；C) grating signal and the start of Page position signalling that are tapped at least two passages pass through at least two output port synchronous transfer respectively at least two nozzle control panel；D) at least two nozzle control panel controls shower nozzle inkjet printing.
In above-mentioned method for transmitting signals, in described step b), signal synchronizes the FPGA on tapping plate and encoder can detect the precision output of signal boost to four times, and FPGA tapped off signal speed is nanosecond.
In above-mentioned method for transmitting signals, the grating signal and the start of Page position signalling port number that are tapped in described step c) are equal with output port quantity, output port quantity is more than or equal to nozzle control panel quantity, described nozzle control panel connects shower nozzle, shower nozzle quantity is determined by nozzle control panel, and shower nozzle quantity is at least one.
The present invention uses a signal to synchronize tapping plate in signals transmission, signal synchronizes tapping plate and receives the start of Page position signalling and grating signal detected, tap of being run simultaneously by detection signal is multi channel signals, and it is simultaneously transmit to multiple nozzle control panel, compared with prior art, the beneficial effects of the present invention is:
1, signal synchronizes tapping plate by a channel signal tap is multichannel tapped off signal, each channel signal transmission is to a nozzle control panel, therefore multiple nozzle control panel can be used, thus control more shower nozzle and carry out air brushing, more shower nozzle uses different arrangement mode can increase printing fabric width, improve print speed, enhancing print resolution or also can realize multi-color printing.
2, signal synchronization tapping plate is run simultaneously and is carried out tapping and reaching nozzle control panel by each channel signal, i.e. after signal synchronizes the beginning print command that tapping plate receives main frame transmission, each nozzle control panel can receive print command and signal at synchronization, the nozzle control panel control nozzle printing receiving print command owing to successively transmission arrives each nozzle control panel after can avoiding causing occurs delayed, it is to avoid affect the quality of air brushing picture and text.
3, signal synchronization tapping plate can improve quad-precision on the basis of the precision of encoder detection again, and order detection displacement is more accurate, raising printer air brushing quality.
4, any one road output port can be carried out the delay disposal of start of Page position signalling, to trigger the startup of the auxiliary equipments such as matching used photographic head, sorter, improve printer allocation function.
Accompanying drawing explanation
Fig. 1 is printing head and print media corresponding relation schematic diagram in the present invention；
Fig. 2 is the input signal schematic diagram of encoder detection in the present invention；
Fig. 3 is signal transmission and the basic compositional block diagram of data transfer model in the embodiment of the present invention；
Fig. 4 is the block diagram that in the embodiment of the present invention, signal synchronizes the main dispensing unit of tapping plate.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is printing head and print media corresponding relation schematic diagram in the present invention, in Onepass print procedure, print media transmits along X-direction, and the position of shower nozzle maintains static, during in the position of picture and text default to be printed of print media below printing head, shower nozzle carries out inkjet printing.For guaranteeing the correct shower nozzle ink-jet moment, need to detect, during transmitting, the position that print media transmits, thus control shower nozzle at default correspondence position air brushing picture and text, one of them detection position is the start of Page position of print media, another position is the picture and text original position to be printed in printer page, start of Page position carries out detection by photoelectric sensor and obtains, and the grating signal that picture and text original position i.e. distance d of distance start of Page position is detected by encoder draws.Start of Page position signalling and grating signal that detection obtains are transmitted to nozzle control panel again, nozzle control panel controls shower nozzle and carries out ink-jet when arriving proper timing, complete figure message printing, in the embodiment of Fig. 1, print media is during transmitting, when the default printing picture and text starting position of shower nozzle H1 air brushing is transmitted and is arrived below shower nozzle H1, picture and text are specified in programme-control shower nozzle H1 injection, when the default printing picture and text starting position of shower nozzle H2 air brushing is transmitted and is arrived below shower nozzle H2, picture and text are specified in programme-control shower nozzle H2 injection, when the default printing picture and text starting position of shower nozzle H3 air brushing is transmitted and is arrived below shower nozzle H3, picture and text are specified in programme-control shower nozzle H3 injection, when the default printing picture and text starting position of shower nozzle H4 air brushing is transmitted and is arrived below shower nozzle H4, picture and text are specified in programme-control shower nozzle H4 injection.If shower nozzle quantity or nozzle tip arrangement mode are different, principle is identical, and i.e. when the default printing picture and text starting position of this shower nozzle air brushing is transmitted and arrived below this shower nozzle, this shower nozzle carries out ink injection.
After shower nozzle starts to print, encoder persistently detects feedback light gate signal, software draws paper feed displacement according to the grating signal that encoder detects thus feedback presets the position printing picture and text, and shower nozzle controls ink-jet according to the constant feedback of encoder, it is achieved the print job of necessary resolution.
nullFig. 2 is the input signal schematic diagram of encoder detection in the present invention，The input signal of encoder includes an a road pulse signal a and road pulse signal b，The phase contrast of pulse signal a and pulse signal b is 90 °，As a example by printer print resolution is as 600dpi，Then pulse period D represents the displacement of 1/600inch，Signal synchronizes tapping plate and records the rising edge L1 of pulse signal a and the rising edge L2 of trailing edge L3 and pulse signal b and trailing edge L4 in a pulse period D respectively，Quarter will be divided into by a pulse period D，The displacement that then equal portions are corresponding is 1/ (600*4)=1/2400inch，Each pulse period is same principle，Gu after synchronizing tapping plate by signal，The output grating signal precision of encoder detection can improve to quad-precision.
Illustrating signals transmission below in conjunction with Fig. 3, this embodiment is as a example by a channel signal can be tapped as four-way signal by tapping plate.nullFirst the grating signal obtained through start of Page position signalling and the encoded device of photoelectric sensor acquisition sends to tapping plate，The signal process by tapping plate，Tap of start of Page position signalling and grating signal being run simultaneously is four passage outputs，Signal in each passage is identical，The processing speed of tapping plate is nanosecond，This speed can ensure that four passages are in synchronization output signal，Then by each multi-channel output signal synchronous transfer to corresponding nozzle control panel，The present embodiment is provided with the first nozzle control panel、Second nozzle control panel、3rd nozzle control panel and the 4th nozzle control panel，Each nozzle control panel connects at least one shower nozzle，After start of Page position signalling and grating signal are sent to nozzle control panel，Nozzle control panel controls shower nozzle and sprays ink droplet when print media is sent to the picture and text position preset，Complete air brushing.
Wherein the print data of shower nozzle air brushing is transmitted to shower nozzle by data transfer mode, data transmission procedure, Schilling PC is sent to master board by direct memory access mode the print data after raster image processing, master board is PCIE plate, print data is carried out processing conversion by master board, rear it is transferred to the first nozzle control panel respectively, second nozzle control panel, 3rd nozzle control panel and the 4th nozzle control panel, codified logical block and synchronous DRAM it is provided with in nozzle control panel, in the codified logical block that print data is sent on nozzle control panel, owing to parallel print data amount is huge, codified logical block internal storage can not store whole parallel print data, codified logical block is while receiving print data, carry out whether print data transmits wrong verification；While receive starting and verify errorless data and be sent in synchronous DRAM, continue to and verify the print data of new incoming vacateing space new in codified logical block.If the print data of verification is wrong, software controls wrong report is fed back to printer master board, and master board resends print data and verifies to nozzle control panel；If the parallel print data of verification is errorless, software controls to feed back to printer master board without error signal, master board continues to send new print data and verifies to nozzle control panel, i.e. complete the memory function in advance of print data, the codified logical block of nozzle control panel arranges one or more subregion, print data required during each subregion correspondence one nozzle printing of storage.After software receipt start of Page position signalling and grating signal control to send print command, the print data stored in the codified logical block of nozzle control panel is passed to multiple shower nozzle and is carried out figure message printing.
nullFig. 4 is the block diagram that in the embodiment of the present invention, signal synchronizes the main dispensing unit of tapping plate，Signal synchronizes the main dispensing unit of tapping plate and includes FPGA、Sensor interface、Encoder interfaces、First output port、Second output port、3rd output port、4th output port、CAN PHY and supply module，Signal synchronizes the sensor interface on tapping plate and receives the start of Page signaling interface that sensor detects，Signal synchronizes the encoder interfaces on tapping plate and receives the grating signal that encoder detection obtains，Signal synchronizes the FPGA on tapping plate and is run simultaneously by a channel signal tap into four identical channel signals by receiving the start of Page position signalling that comes and grating signal respectively，And synchronous transfer is to four output ports，I.e. first output port、Second output port、3rd output port and the 4th output port，Each output port connects a nozzle control panel respectively，Identical start of Page position signalling and grating signal are transferred to nozzle control panel by hard wires by output port respectively，Control shower nozzle when ink-jet.It is pointed out that output port also can not all use, i.e. certain interface be not connected to nozzle control panel, the most how to connect and printed situation by reality and determine.Another function of FPGA is to receive to start printing through what PC sent, time-out printing, cancel printing etc. to arrange, these are arranged and are spread out of by CAN after PCIE by PC, synchronized to transmit to FPGA after the CAN PHY on tapping plate receives by signal again, synchronize tapping plate with control signal to perform to start to print, the orders such as time-out printing or cancellation printing, below as a example by receiving beginning print command, after CAN PHY receives the beginning print command that main frame sends, the identical signal synchronization of four passages after tap is sent to each nozzle control panel by FPGA, perform to start print command；The principle performing time-out printing and cancellation print command is identical.Supply module provides power supply for nozzle control panel.
It is to be noted, signal synchronizes tapping plate can detect signal by an access detection signal tap for N channel according to different model, N is natural number, the four-way being not limited in embodiment, this mode can be applicable to arbitrary use more than in the ink-jet printer signal transmission system of a nozzle control panel.Further, each nozzle control panel connects the quantity of shower nozzle and is determined by nozzle control panel configuration, and printer head quantity is not limited by the present invention, is not defined the arrangement mode of shower nozzle simultaneously.
Present invention can also apply on production line or support the use other miscellaneous functions, need photographic head shooting the most afterwards or need printing article are carried out the situations such as go-on-go after printing completes, any one road output port on tapping plate is synchronized for signal, can individually control it is carried out the delay disposal of start of Page position signalling output, i.e. set delay distance according to the feedback of encoder, start working in order to trigger the photographic head being arranged on specified location or sorting machine startup, increase and print aid in treatment, improved and complete function.
It is to be noted any deformation that the detailed description of the invention according to the present invention made, the scope recorded all without departing from spirit and the claim of the present invention.
Claims (9)
1. an ink-jet printer signal synchronizes tapping plate, it is characterized in that, one end arranges receiving port and receives detection signal, described receiving port includes encoder interfaces and sensor interface, encoder interfaces is for receiving the grating signal of encoder detection, and sensor interface is for receiving the start of Page position signalling of sensor detection；The other end arranges output port and connects nozzle control panel, output detections signal, signal synchronizes to arrange FPGA inside tapping plate, the detection signal of reception is run simultaneously and is tapped at least two passages identical detection signal by FPGA, output port will tap after at least two access detection signal synchronous transfer at least two nozzle control panel, in order to control nozzle printing.
2. ink-jet printer signal as claimed in claim 1 synchronizes tapping plate, it is characterised in that encoder can be detected the precision output of signal boost to four times by described FPGA.
3. ink-jet printer signal as claimed in claim 1 synchronizes tapping plate, it is characterised in that described FPGA tapped off signal speed is nanosecond.
4. ink-jet printer signal as claimed in claim 1 synchronizes tapping plate, it is characterised in that described FPGA connects CAN passage, starts printing, time-out printing for what Receiving Host sent and cancels the operation setting printed.
5. ink-jet printer signal as claimed in claim 1 synchronizes tapping plate, it is characterized in that, described output port is at least provided with two, the quantity of output port is equal with the port number after tapping plate tapped off signal, output port quantity is more than or equal to nozzle control panel quantity, described nozzle control panel connects shower nozzle, and shower nozzle quantity is determined by nozzle control panel.
6. ink-jet printer signal as claimed in claim 1 synchronizes tapping plate, it is characterised in that described output port is controlled individually the delay disposal carrying out start of Page position signalling.
7. signal as claimed in claim 1 synchronizes the method for transmitting signals of tapping plate, it is characterized in that, the step of signal transmission particularly as follows: a) signal synchronize the encoder interfaces on tapping plate and receive the grating signal of encoder detection, signal synchronizes the sensor interface on tapping plate and receives the print media start of Page position signalling of sensor detection；B) grating signal of reception is run simultaneously with start of Page position signalling and is tapped into identical at least two passage grating signals and start of Page position signalling by the FPGA on signal synchronization tapping plate；C) grating signal and the start of Page position signalling that are tapped at least two passages pass through at least two output port synchronous transfer respectively at least two nozzle control panel；D) at least two nozzle control panel controls shower nozzle inkjet printing.
8. method for transmitting signals as claimed in claim 7, it is characterised in that in described step b), signal synchronizes the FPGA on tapping plate and encoder can detect the precision output of signal boost to four times, and FPGA tapped off signal speed is nanosecond.
9. method for transmitting signals as claimed in claim 7, it is characterized in that, the grating signal and the start of Page position signalling port number that are tapped in described step c) are equal with output port quantity, output port quantity is more than or equal to nozzle control panel quantity, described nozzle control panel connects shower nozzle, shower nozzle quantity is determined by nozzle control panel, and shower nozzle quantity is at least one.
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