CN1273299C - Identifying circuit of ink jet form printing head and method - Google Patents
Identifying circuit of ink jet form printing head and method Download PDFInfo
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- CN1273299C CN1273299C CN 03121609 CN03121609A CN1273299C CN 1273299 C CN1273299 C CN 1273299C CN 03121609 CN03121609 CN 03121609 CN 03121609 A CN03121609 A CN 03121609A CN 1273299 C CN1273299 C CN 1273299C
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Abstract
The present invention relates to a circuit and a method for identifying ink jet printing heads, which can be suitable for indentifying an ink jet printing head form. Firstly, a reset signal and at least a clock signal are needed to be provided. When the identification circuit receives the reset signal, a count value is reset; when the identification circuit receives a corresponding clock signal, the count value is carried out with carry operation; a logic circuit is programmed according to needed identification codes representing the form of the ink jet printing head and the count value so that the ink jet printing head can output the needed identification codes orderly.
Description
Technical field
The invention relates to a kind of ink jet-print head (ink jet print head), and particularly relevant for a kind of identification circuit and method of ink jet-print head.
Background technology
With the progress of work science and technology, various computer peripheral products are variation increasingly also.It just is example with the ink-jet printer, for catering to various the print demands of user under varying environment, ink-jet printer miscellaneous so develop, and each ink-jet printer has corresponding multiple ink jet-print head, for example has the ink jet-print head of black card casket or color chart casket and has ink jet-print head of different spray orifice numbers or the like.
For the various multi-form ink jet-print heads of identification, during fabrication, all can give the identification code of each ink jet-print head one corresponding to its model or sequence number (Identification Code), when being installed on the ink-jet printer with the multi-form ink jet-print head of box lunch, ink-jet printer is able to identification, and, control the ink jet-print head of different model or sequence number with different control formulas.
As mentioned above, because ink jet-print head of a great variety, and, in ink jet-print head, all can store identification code corresponding to its model or sequence number for ink-jet printer device for identifying multi-form ink jet-print head thereon is provided.Therefore, in each ink jet-print head, also can include an identification circuit (Identification Circuit), read the identification code that is stored in the ink jet-print head for ink-jet printer, to carry out identification.And the identification circuit of ink jet-print head only uses when ink jet-print head just is mounted to ink-jet printer or before the action that begins to print, in case ink jet-print head by identification after, just no longer need to use identification circuit.Therefore, the identification circuit of ink jet-print head can be used the address lines of control print head array (Print Head Array) circuit usually, reads the identification code that is stored in the ink jet-print head.
Please refer to Fig. 1, it is to show a kind of ink-jet printer identification system block schematic diagram.Show among the figure that this ink-jet printer identification system 100 comprises printer circuitry (Printer Electronics) 110 and the printhead circuit (Print HeadElectronics) 120 that is connected with temperature sensing output line 132 via address lines 131.Wherein, printer circuitry 110 comprises controller (Controller) 111 and drive circuit (Driving Circuit) 112, and printhead circuit 120 then comprises print head array (Print Head Array) 121, identification circuit 122 and temperature sensing circuit 123.
When prining, controller 111 can will be printd data transmission to drive circuit 112, and drives address lines 131 via drive circuit 112, the required pattern of prining out with control print head array 121.Temperature sensing circuit 123 is in order to the temperature of sensing printhead, and is sent to controller 111 via temperature sensing output line 132.Identification circuit 122 is the address lines 131 of coupling part then, sends the control signal that reads the internal memory identification code for controller 111, and the identification code of internal memory is exported via temperature sensing output line 132.
Several different identification circuits 122 practices are arranged, be illustrated in figure 2 as a kind of identification circuit figure that is exposed in No. the 5363134th, United States Patent (USP).Show among the figure that this identification circuit 200 is to use fuse link (Fuse) F1 to F13 of a plurality of programmeds to cooperate a plurality of electric crystal Q1 to Q13 to finish.The corresponding respectively grid (gate) that is connected to electric crystal Q1 to Q13 of each fuse link F1 to F13, with the conducting of control electric crystal Q1 to Q13 whether.And corresponding to the identification code of the form of the ink jet-print head that uses this identification circuit 200, then store via the fuse link F1 to F13 that stylizes, wherein whether the fusing of each fuse link F1 to F13 to be, represents a bit data of identification code respectively.
When printer is desired to read identification code, can send the control signal that reads of high levle via address lines 131, suppose to send the control signal that reads of high levle herein via A13, then when fuse link F13 does not fuse, electric crystal Q13 will be switched on, therefore temperature sensing output line 132 will be pulled to low level, and read 0 identification code.Otherwise, when fuse link F13 is fused when stylizing, then electric crystal Q13 is with not conducting, temperature sensing output line 132 will be pulled up to high levle because of the resistance (not illustrating in the picture in picture) that draws high of the printer circuitry among Fig. 1 110, therefore can read 1 identification code, the identification code of other bits then can be in regular turn as above-mentioned mode read.
Yet each address lines of this kind identification circuit 200 can only corresponding read the identification code of a bit, so that the bit number of storable identification code will be subject to the quantity of address lines, and is difficult to expand.
Be illustrated in figure 3 as and be exposed in United States Patent (USP) the 5th, 940, No. 095 another kind of identification circuit figure.These identification circuit 300 main systems use a plurality of bit shift buffers (one-bit shiftregister) 320a, 320b, 320c and 320d, reach the purpose of incorporating the identification circuit (parallelin, serial out identification circuit) of going here and there out into.That is to say, when the printer circuitry among Fig. 1 110 is written into control signal Load via address lines 325 transmission, the identification code of internal memory will walk abreast and be written into a plurality of bit shift buffer 320a, 320b, among 320c and the 320d, then ought be respectively via address lines 326 and 327, when receiving one first a clock signal C lk1 and a second clock signal Clk2 in regular turn, the bit data that is stored among the bit shift buffer 320d can shift out via output line 328, the bit data that is stored among the bit shift buffer 320c then moves among the bit shift buffer 320d, the bit data that is stored among the bit shift buffer 320b then moves among the bit shift buffer 320c, and the bit data that is stored among the bit shift buffer 320a then moves among the bit shift buffer 320b.
Be written into control signal Load in printer circuitry 110 via address lines 325 transmission, and respectively via address lines 326 and 327, after transmitting the required first clock signal C lk1 and second clock signal Clk2 in regular turn, be stored in the identification code among a plurality of bit shift buffer 320a, 320b, 320c and the 320d then, in regular turn the output of tandem ground.Therefore, this kind employing incorporates that the identification circuit 300 of going here and there out will only need into as address lines such as 325,326 and 327, can expand the bit number of identification code on demand, and not be subjected to the restriction of address lines quantity.
Yet, be not subjected to the restriction of address lines quantity equally, can expand the identification circuit of the bit number of identification code on demand, be not limited in and above-mentioned incorporate the identification circuit of going here and there out into and just can reach.
Summary of the invention
The invention provides a kind of identification circuit and method of ink jet-print head, it can expand the bit number of identification code on demand, and is not subjected to the restriction of address lines quantity.
For reaching above-mentioned and other purpose, the invention provides a kind of identification circuit of ink jet-print head, applicable to ink-jet printer with a reset signal line (reset signal line), at least one clock cable (clocksignal line) and an identification code holding wire (identification code signal line), the form of the ink jet-print head of installing in order to identification.This identification circuit comprises: counter (counter), logical block and the unit that stylizes.
Wherein, counter connects reset signal line, at least one clock cable, in order to when the self reset holding wire receives reset signal, counter reset, and when when this at least one clock cable receives a corresponding clock signal, the count value of carry counting system device is with a plurality of output outputs from counter.
Logical block has a plurality of inputs and an output, and its output connects the identification code holding wire, so that the identification code of the form of ink jet-print head is represented in output.The unit that stylizes then couples the output of counter and the input of logical block, and in order to the identification code that the foundation desire stores, the correspondence of the output of each counter that stylizes respectively and the input of logical block is connected.
The identification circuit of described ink jet-print head, behind counter reset, counter can be according to 1,2,4,8, the order of 16.. etc., count its count value.
The identification circuit of described ink jet-print head, its logical block are one or gate, and or gate also can comprise an activation control end, with the control of the clock signal of receive clock holding wire.
When the identification circuit of described ink jet-print head, its unit that stylizes lie in the identification circuit of making ink jet-print head, plan that with light shield the mode of (Mask Programmed) stylizes, to store required identification code.
The identification circuit of described ink jet-print head, its unit that stylizes provides the unit that stylizes of programmed, to store required identification code then in the mode of fuse link (Fuse).
The present invention provides a kind of identification circuit of ink jet-print head in addition, applicable to ink-jet printer with a reset signal line, at least one clock cable and an identification code holding wire, and the form of the ink jet-print head of installing in order to identification.This identification circuit comprises: counter, a plurality of change-over switch and the unit that stylizes.
Wherein, counter connects reset signal line and at least one clock cable, in order to when the self reset holding wire receives a reset signal, counter reset, and when when this at least one clock cable receives a corresponding clock signal, the count value of carry counting system device is with a plurality of output outputs from counter.
Each of a plurality of change-over switches has an input, an output and a control end, the output of all change-over switches all connects the identification code holding wire, represent the identification code of the form of ink jet-print head with output, the then corresponding respectively output that is connected to counter of the control end of each change-over switch is with the control of the output of accepting counter.
The identification circuit of described ink jet-print head, the unit that stylizes then couples the input of above-mentioned change-over switch, in order to the identification code that the foundation desire stores, the input value of the input of the change-over switch that stylizes.
The identification circuit of described ink jet-print head, behind its counter reset, counter can be according to 1,2,4,8, the order of 16.. etc., count its count value.
The identification circuit of described ink jet-print head, it is to use NMOS electric crystal or CMOS electric crystal to be used as change-over switch.
When the identification circuit of described ink jet-print head, its unit that stylizes lay in the identification circuit of making ink jet-print head, the mode of planning with light shield stylized, to store required identification code.
The identification circuit of described ink jet-print head, its unit that stylizes provides the unit that stylizes of programmed, to store required identification code then in the mode of fuse link.
According to spirit of the present invention, the invention provides a kind of discrimination method of ink jet-print head, it is applicable to the form of identification one ink jet-print head, and comprises the following steps: at first to provide a reset signal, at least one clock signal.When receiving reset signal, the count value of then resetting.When receiving this at least one clock signal, the count value that carry is counted, and the identification code and the above-mentioned count value of the form of the required representative ink jet-print head of foundation, the logic circuit that stylizes makes ink jet-print head can export required identification code in regular turn.
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, special with preferred embodiment, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 shows a kind of ink-jet printer identification system block schematic diagram;
Fig. 2 shows a kind of identification circuit figure be exposed in No. the 5363134th, United States Patent (USP);
Fig. 3 shows to be exposed in United States Patent (USP) the 5th, 940, No. 095 another kind of identification circuit figure;
Fig. 4 is the identification circuit figure of demonstration according to a kind of ink jet-print head of first embodiment of the invention;
Fig. 5 is the identification circuit time sequential routine figure of a kind of ink jet-print head of demonstration first and two embodiment according to the present invention; And
Fig. 6 is the identification circuit figure of demonstration according to a kind of ink jet-print head of second embodiment of the invention.
The specific embodiment
Please refer to shown in Figure 4ly, it is the identification circuit according to a kind of ink jet-print head of first embodiment of the invention.Show among the figure that this identification circuit 400 comprises: counter (counter) 410, for example be or gate (OR logic gate) is formed or logical block (OR logic unite) 430 and for example be the unit 420 that stylizes that fuse link (Fuse) is formed.Though the unit 420 that stylizes among the figure is to illustrate with fuse link, but the people who has the knack of this technology will be appreciated that, as when making the identification circuit 400 of ink jet-print head, with the mode of light shield planning its unit 420 that stylizes that stylizes in advance, or other modes etc. also are the feasible another kind of practice.
As shown in Figure 4, the identification circuit 400 of a kind of ink jet-print head of present embodiment, still only need 3 address lines of utilization ink-jet printer (not illustrating in the picture in picture), be used as transmitting the reset signal line (reset signal line) 401 of reset signal Reset, first clock cable 402 of transmission first clock signal (clocksignal) Clk1 and the second clock holding wire 403 of transmission second clock signal Clk2, with the function of the form of carrying out the ink jet-print head that identification installed.Therefore, can expand its bit number, and can not be subjected to the restriction of address lines quantity according to the demand of identification code.
Wherein, counter 410 connects reset signal line 401, first clock cable 402 and second clock holding wire 403.In this embodiment, because of the required bit number of identification code is 8 bits, so use one has the 8 bit counters of 8 output b0～b7, to cooperate required identification code bit number.Each output b0～b7 is connected to via a fuse link of the unit 420 that stylizes respectively or an input of logical block 430, and or each input of logical block 430, also be connected to earth terminal via a fuse link of the unit 420 that stylizes respectively, so that store required identification code via stylizing.In addition, form or logical block 430 or gate also can comprise an activation control end EN in addition so that receive control from the second clock signal Clk2 of second clock holding wire 403.
Suppose that the identification code that institute's desire stores is 11101000, fuse links such as F10, F11, F12, F3, F14, F5, F6 and F7 among the figure then should fuse, and fuse links such as the F0 among the reservation figure, F1, F2, F13, F4, F15, F16 and F17, stylizing and store required identification code in the unit 420 that will stylize, the explanation of its operating principle is please in the lump with reference to the time sequential routine figure of figure 5.
When counter 410 self reset holding wires 401 received reset signal Reset, it was 0 that the count value of counter 410 will be reset.And when white in regular turn first clock cable 402 of counter 410 and second clock holding wire 403 reception one first clock signal C lk1 and a second clock signal Clk2, counter 410 will be according to a definite sequence, for example 1,2,4,8,16 etc. order is counted its count value.That is to say, when the count value of counter 410 be reset be 0 after, output b0～the b7 of counter 410, will be in the time in regular turn from first clock cable 402 and second clock holding wire 403 reception one first clock signal C lk1 and a second clock signal Clk2, be set at 1 of high levle in regular turn in turn, its time sequential routine is shown in b0～b7 of Fig. 5.
When the output b0 of counter 410 is 1, and output b1～b7 is 0 o'clock, and F0 is retained when stylizing because of fuse link so that or the output of logical block 430 will export 1 identification code ID.And when the output b1 of counter 410 be 1, and output b0 and b2～b7 be 0 o'clock, because of fuse link F1 is retained when stylizing, so or the output of logical block 430 will export 1 identification code ID.Similarly, when the output b2 of counter 410 is 1, and output b0～b1 and b3～b7 be 0 o'clock, and F2 is retained when stylizing because of fuse link, so or the output of logical block 430 also will export 1 identification code ID.When the output b3 of counter 410 is 1, and output b0～b2 and b4～b7 be 0 o'clock, and because of fuse link F3 is fused when stylizing, fuse link F13 then is retained, so or the output of logical block 430 will export 0 identification code ID.The rest may be inferred then or the output of logical block 430 will export 11101000 identification code ID in regular turn, the identification code of the ink jet-print head installed of representative just, its time sequential routine can be with reference to shown in the ID of figure 5.
Please refer to Fig. 6, it is the identification circuit according to a kind of ink jet-print head of second embodiment of the invention.Show among the figure that this identification circuit 600 comprises: counter (counter) 610, for example be stylize unit 620 and the formed change-over switch 630,631,632,633,634,635,636 and 637 of a plurality of NMOS electric crystal that fuse link (Fuse) is formed.Though the unit 620 that stylizes among the figure is to illustrate with fuse link, the people who so has the knack of this technology will be appreciated that, as when making the identification circuit 600 of ink jet-print head, with the mode of light shield planning its unit 620 that stylizes that stylizes in advance, or other modes etc. also are the feasible another kind of practice.
As shown in Figure 6, the identification circuit 600 of a kind of ink jet-print head of present embodiment, same 3 address lines that only need utilization ink-jet printer (not illustrating among the figure), be used as transmitting the reset signal line 601 of reset signal Reset, first clock cable 602 of the transmission first clock signal C lk1 and the second clock holding wire 603 of transmission second clock signal Clk2, with the function of the form of carrying out the ink jet-print head that identification installed.Therefore, also can expand its bit number, and can not be subjected to the restriction of address lines quantity according to the demand of identification code.
Wherein, counter 610 connects reset signal line 601, first clock cable 602 and second clock holding wire 603.In this embodiment, because of the required bit number of identification code is 8 bits, so use one has the 8 bit counters of 8 output b0～b7, to cooperate required identification code bit number.Each output b0～b7 correspondence respectively is connected to change-over switch 630,631,632,633,634,635,636 and 637 grid (drain) end, to control change-over switch 630 respectively, 631,632,633,634,635, whether 636 and 637 conducting, and change-over switch 630,631,632,633,634,635,636 and 637 a source/drain electrode (source/drain) end is connected to power end or earth terminal via the fuse link of the unit 620 that stylizes respectively, so that import required identification code via stylizing, change-over switch 630 in addition, 631,632,633,634,635,636 and 637 one source/drain electrode end then is connected to identification code holding wire (identification code signalline) 605 together, with the output identification code.
Suppose that the identification code that institute's desire stores is 11101000, fuse links such as F10, F11, F12, F3, F14, F5, F6 and F7 among the figure then should fuse, and fuse links such as the F0 among the reservation figure, F1, F2, F13, F4, F15, F16 and F17, to stylize and store required identification code in the unit 620 that will stylize, the explanation of its operating principle please merge the time sequential routine figure with reference to figure 5 equally.
When counter 610 self reset holding wires 601 received reset signal Reset, it was 0 that the count value of counter 610 will be reset.And when counter 610 in regular turn when first clock cable 602 and second clock holding wire 603 receives one first clock signal C lk1 and a second clock signal Clk2, counter 610 will be according to a definite sequence, for example 1,2,4,8, the order of 16.. etc., count its count value.That is to say, when the count value of counter 610 be reset be 0 after, output b0～the b7 of counter 610, will be in the time in regular turn from first clock cable 602 and second clock holding wire 603 reception one first clock signal C lk1 and a second clock signal Clk2, be set at 1 of high levle in regular turn in turn, its time sequential routine is shown in b0～b7 of Fig. 5.
When the output b0 of counter 610 is 1, with conducting change-over switch 630, and because of fuse link F0 is retained when stylizing, so will export 1 identification code ID.And when the output b1 of counter 610 is 1, with conducting change-over switch 631, and because of fuse link F1 is retained when stylizing, so can export 1 identification code ID.Similarly, when the output b2 of counter 610 is 1, with conducting change-over switch 632, and because of fuse link F2 is retained when stylizing, so also export 1 identification code ID.When the output b3 of counter 610 was 1, with conducting change-over switch 633, and because of fuse link F3 is fused when stylizing, fuse link F13 then was retained, so will export 0 identification code ID.The rest may be inferred then identification code holding wire 605 11101000 identification code ID will appear in regular turn, the identification code of the ink jet-print head installed of representative just, its time sequential routine please refer to shown in the ID of Fig. 5.
The people who has the knack of this technology will be appreciated that, the foregoing description only is a particular implementation aspect wherein of the present invention, for example 430 among Fig. 4 can also other logical blocks (for example NAND logical block) or decoder can replace easily, be not limited to use or logical block; Same, the used clock cable of the present invention is not limited to two, as long as a clock cable can be reached function of the present invention and purpose; In addition, the change-over switch of Figure 66 31-637 is not limited to use the NMOS electric crystal, also can use CMOS to be used as change-over switch.
According to the spirit of the foregoing description, can conclude a kind of discrimination method of ink jet-print head, it is applicable to the form of identification one ink jet-print head, and comprises the following steps: at first to provide a reset signal and at least one clock signal.When receiving reset signal, the count value of then resetting.When receiving a corresponding clock signal, the count value that carry is counted, and according to the identification code and the above-mentioned count value of the form of required representative ink jet-print head, the logic circuit that stylizes makes ink jet-print head can export required identification code in regular turn.
Wherein when count value be reset be 0 after, and when receiving first clock signal and second clock signal in regular turn, will be according to a definite sequence, for example 1,2,4,8, the order of 16.. etc., count its count value.And logic circuit wherein can be a gate or a plurality of NMOS or CMOS electric crystal.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any people who has the knack of this technology, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention defines when looking the accompanying Claim book.
Claims (15)
1. the identification circuit of an ink jet-print head is applicable to the ink-jet printer with a reset signal line, at least one clock cable and an identification code holding wire, and the form of coming identification one ink jet-print head is characterized in that, comprising:
One counter, couple this reset signal line, this at least one clock cable, in order to when when this reset signal line receives a reset signal, this counter of resetting, and when when this at least one clock cable receives a corresponding clock signal, the count value of this counter of carry is with a plurality of output outputs of this counter certainly;
One logical block has a plurality of inputs and an output, and the output of this logical block couples this identification code holding wire, represents an identification code of the form of this ink jet-print head with output; And
One unit that stylizes couples the output of this counter and the input of this logical block, and in order to this identification code that the foundation desire stores, the correspondence of the output of each this counter that stylizes respectively and the input of this logical block connects.
2. the identification circuit of ink jet-print head as claimed in claim 1 is characterized in that, wherein behind this counter of resetting, be according to 1,2,4,8, the order of 16.. etc., count the count value of this counter.
3. the identification circuit of ink jet-print head as claimed in claim 1 is characterized in that, wherein this logical block is one or gate, NAND logical block or decoder.
4. the identification circuit of ink jet-print head as claimed in claim 1 is characterized in that, this logical block and have an activation control end wherein, and this activation control end couples receives a clock holding wire.
5. the identification circuit of ink jet-print head as claimed in claim 1 is characterized in that, when wherein lying in the identification circuit of making this ink jet-print head, in light shield planning mode this unit that stylizes is stylized, and stores this identification code.
6. the identification circuit of ink jet-print head as claimed in claim 1 is characterized in that, wherein is the mode with fuse link, provides this unit that stylizes of programmed, to store this identification code.
7. the identification circuit of an ink jet-print head is applicable to the ink-jet printer with a reset signal line, at least one clock cable and an identification code holding wire, and the form of coming identification one ink jet-print head is characterized in that, comprising:
One counter, couple this reset signal line, this at least one clock cable, in order to when when this reset signal line receives a reset signal, this counter of resetting, and when when this at least one clock cable receives a corresponding clock signal, the count value of this counter of carry is with a plurality of output outputs of this counter certainly;
A plurality of change-over switches, each those change-over switch has an input, an output and a control end, the output of all those change-over switches couples this identification code holding wire, to export an identification code of the form of representing this ink jet-print head, the then corresponding respectively output that is connected to this counter of the control end of each those change-over switch; And
One unit that stylizes couples the input of those change-over switches, in order to this identification code that the foundation desire stores, the input value of the input of those change-over switches that stylize.
8. the identification circuit of ink jet-print head as claimed in claim 7 is characterized in that, wherein behind this counter of resetting, be according to 1,2,4,8, the order of 16.. etc., count the count value of this counter.
9. the identification circuit of ink jet-print head as claimed in claim 7 is characterized in that, wherein those change-over switches are NMOS electric crystal or CMOS electric crystal.
10. the identification circuit of ink jet-print head as claimed in claim 7 is characterized in that, when wherein lying in the identification circuit of making this ink jet-print head, in light shield planning mode this unit that stylizes is stylized, and stores this identification code.
11. the identification circuit of ink jet-print head as claimed in claim 7 is characterized in that, wherein is the mode with fuse link, provides this unit that stylizes of programmed, to store this identification code.
12. the discrimination method of an ink jet-print head is applicable to it is characterized in that the form of identification one ink jet-print head, comprises the following steps:
One reset signal and at least one clock signal are provided;
When receiving this reset signal, the count value of resetting;
When receiving this at least one clock signal, this count value of carry;
One identification code and this count value of the form of required this ink jet-print head of representative of foundation, the logic circuit that stylizes makes this ink jet-print head export this identification code in regular turn.
13. the discrimination method of ink jet-print head as claimed in claim 12 is characterized in that, wherein after this count value of resetting, be according to 1,2,4,8, the order of 16.. etc., count this count value.
14. the discrimination method of ink jet-print head as claimed in claim 12 is characterized in that, wherein this logic circuit is one or gate, NAND gate or decoder.
15. the discrimination method of ink jet-print head as claimed in claim 12 is characterized in that, wherein this logic circuit is a plurality of NMOS electric crystals or CMOS electric crystal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03121609 CN1273299C (en) | 2003-03-18 | 2003-03-18 | Identifying circuit of ink jet form printing head and method |
| HK04109612A HK1066763A1 (en) | 2003-03-18 | 2004-12-04 | Ink jet print head identification circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03121609 CN1273299C (en) | 2003-03-18 | 2003-03-18 | Identifying circuit of ink jet form printing head and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1532059A CN1532059A (en) | 2004-09-29 |
| CN1273299C true CN1273299C (en) | 2006-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03121609 Expired - Fee Related CN1273299C (en) | 2003-03-18 | 2003-03-18 | Identifying circuit of ink jet form printing head and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1273299C (en) |
| HK (1) | HK1066763A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363180C (en) * | 2004-12-15 | 2008-01-23 | 桦晶科技股份有限公司 | Ink-jet printing head identification system for printer possessing circular counter and programmed circuit |
-
2003
- 2003-03-18 CN CN 03121609 patent/CN1273299C/en not_active Expired - Fee Related
-
2004
- 2004-12-04 HK HK04109612A patent/HK1066763A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1532059A (en) | 2004-09-29 |
| HK1066763A1 (en) | 2005-04-01 |
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