CN203317892U - Conjoined chip, ink box and printing device - Google Patents

Abstract

The utility model discloses a conjoined chip, an ink box and a printing device. The conjoined chip comprises N terminal groups which are arranged on a base board and correspond to N ink boxes, the N is greater than 1, each terminal group comprises a first mounting detection terminal connected with a detection voltage control portion in a printing device ink box detection circuit and a second mounting detection terminal which is connected in series with a corresponding resistor element in the printing device ink box detection circuit and then is connected with a certain mounting detection portion, all first mounting detection terminals are connected mutually to form the first equipotential line, all second mounting detection terminals are connected mutually to form the second equipotential line, the first equipotential line and the second equipotential line are connected through the resistor unit of which a resistance value is greater than or equal to zero. The conjoined chip can be arranged on the ink box and can further be arranged on the printing device, compared with the prior art, the conjoined chip has a simpler structure, is more convenient for resetting and is in cooperation with the mounting detection circuit of the printing device for identifying the ink box to reduce a false alarm rate.

Description

Disjunctor chip, print cartridge and printing equipment

Technical field

The utility model relates to printing technology, relates in particular to a kind of disjunctor chip, the print cartridge that uses this chip and printing equipment.

Background technology

Existing ink-jet printing apparatus all comprises printing equipment main body and print cartridge as printer, facsimile machine and duplicator etc., wherein on print cartridge, have ink box chip, storing the information such as ink kind, print cartridge build date, number of print pages, cartridge serial number and residue Mo Liang in this ink box chip.After printing equipment is installed print cartridge or printing equipment while restarting, the machine process is recognized in execution, print cartridge is identified, concrete: print cartridge is packed in printing equipment, after printing equipment detects print cartridge and is in place, read the data that record in ink box chip, judge the ink surplus in print cartridge and detect information that ink box chip replys and whether the information of printing equipment storage inside mates, while only having judgement ink surplus abundance and print cartridge and printing equipment coupling, printing equipment just enters normal print state; Otherwise printing equipment reports an error.But in actual applications, if the print cartridge ink inside exhausts, chip will be write extremely, can't work even print cartridge refills also, thereby cause waste and environmental pollution.For addressing the above problem, occurred on market that a kind of print cartridge connects for reset chip: on disposable chip basis, add reseting module, this reseting module is preset a reset gate limit value, when the quantity of ink information of storing in chip reaches this threshold value, chip automatically resets, and the chip after resetting can characterize a new print cartridge.

For the print cartridge of colored printing device, at present company more commonly used is the disjunctor chips such as tetrad chip, 5-linked chip and six chips for reset chip on the market.Take the tetrad chip as example, and as shown in Figure 1, the shared substrate 10 of chip has concatenating group board 100, and concatenating group board 100 is linked by four little baseplate parts 101～104 with four print cartridge pairings, between every two adjacent little baseplate parts, has clearance G.Each little baseplate part is provided with the terminal group that comprises a plurality of terminals 210～290, and terminal, with substantially fixing arranged spaced, contacts for the spring contact with on printing equipment.Wherein, include installation and measuring terminal 250 and 290 in each terminal group.Printing equipment judges by detecting installation and measuring terminal 250 and 290 whether corresponding print cartridge is in place.

Yet, all there is following problem in actual use in these disjunctor chips: on the one hand, these chips are due to common substrate, often between long and each the little baseplate part of substrate, there is gap, increased substrate surface because of irregular probability of problem such as production or installations, too much installation and measuring terminal on the while substrate, increased the probability of installation and measuring terminal and the loose contact of printing equipment spring contact,, can make installation and measuring terminal and the loose contact of printing equipment spring contact and cause print cartridge not recognize machine because producing or during the problem out-of-flatness such as installation when substrate surface.

On the other hand, existing chip is in order to respond the installation and measuring of printing equipment, and often the installation and measuring terminal 250 and 290 of each little baseplate part is provided with the response device, thereby causes the chip structure complexity, has increased manufacturing cost.

Moreover; the manufacturer of printing equipment is in order to protect its commercial interest; tend to adopt the reset function of limit said chip; as the printing equipment spring contact judges by detecting the voltage between the installation and measuring terminal on ink box chip whether this print cartridge had the plug action; if there is no the plug action; even ink box chip resets, printing equipment does not approve that this print cartridge is a brand-new print cartridge yet.Like this, cause the user to have to the print cartridge that chip is housed is extracted and reinstalled from printing equipment, thus consuming time and increased the ink leak probability.

Therefore, for overcoming the problems referred to above, the utility model is intended providing a kind of structure simpler, reset convenient, and the low disjunctor chip of rate of false alarm, and print cartridge and the printing equipment that this disjunctor chip is installed that this disjunctor chip is installed.

Summary of the invention

For the problems referred to above, the utility model provides a kind of structure simpler, reset convenient, and rate of false alarm low disjunctor chip, print cartridge and printing equipment.

The disjunctor chip, it is characterized in that, comprise substrate and be arranged on substrate and N N the terminal group that print cartridge is corresponding, N 1, in each terminal group, include: the first installation and measuring terminal be electrically connected to for the detection voltage control division with printing equipment print cartridge testing circuit; After connecting for the resistive element corresponding with printing equipment print cartridge testing circuit, the second installation and measuring terminal be electrically connected to indivedual installation and measuring section in printing equipment print cartridge testing circuit; All first installation and measuring terminals of N terminal group are connected to each other by distribution, form the first equipotential line, all second installation and measuring terminals of N terminal group are connected to each other by distribution, form the second equipotential line, and connect its resistance r >=0 between first and second equipotential line by resistance unit.Compared with prior art, this chip structure is simple, only an even wire of a resistance need be set between two equipotential lines, just can assist printing equipment to realize that print cartridge recognizes the machine function, and can reduce in prior art the probability of reporting by mistake occurs because termination contact is bad.

Further, the resistance of above-mentioned resistance unit is fixed, and the resistance of the resistive element corresponding with N terminal group is followed successively by (2 in printing equipment print cartridge testing circuit ⁿ-1) R, in the situation of n=1～N, the resistance r of resistance unit meets the following conditions:

$0\&le;r<R\frac{1}{\underset{j=1}{\overset{N-1}{\mathrm{\&Sigma;}}}\frac{1}{2^j}}-R\frac{1}{\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{1}{2^j-1}}.$

Further, on the connection distribution between first and second equipotential line, also be provided with the first switch element, the first switch element and resistance unit are connected in series, to realize the function that all print cartridges are once resetted simultaneously.

In addition, above-mentioned resistance unit is the adjustable variable resistor unit of resistance, and resistance unit can at least change N kind resistance, at 2 of N print cartridge ^NUnder kind of installment state, make indivedual installation and measuring section the detection current values of different sizes of N kind at least can be detected or detect magnitude of voltage, thereby realize the reset function of single print cartridge.

Further, above-mentioned disjunctor chip internal also is provided with and is connected with resistance unit and regulates the controller of its resistance size.

According to embodiment bis-of the present utility model, be positioned at the outermost terminal group of disjunctor chip one end and also comprise the 3rd installation and measuring terminal, be positioned at the outermost terminal group of the disjunctor chip other end and also comprise the 4th installation and measuring terminal, the 3rd installation and measuring terminal is for being electrically connected to the not installment state test section of printing equipment print cartridge testing circuit; The 4th installation and measuring terminal is for being electrically connected to the detection pulse generation section of printing equipment print cartridge testing circuit; Between the 3rd installation and measuring terminal and the 4th installation and measuring terminal, short circuit is connected.

Further, being connected on distribution between above-mentioned the 3rd installation and measuring terminal and the 4th installation and measuring terminal also is provided with the second switch unit, to realize the function that all print cartridges are once resetted simultaneously.

Further, above-mentioned second switch unit be arranged on the disjunctor chip substrate for the manually operated switching device of user and be integrated in judgement that whether the disjunctor chip internal can be automatically reach predetermined threshold value according to the residue China ink amount recorded in the disjunctor chip is disconnected or closed on-off circuit in a kind of.

According on the other hand of the present utility model, print cartridge is characterized in that: be provided with the disjunctor chip as claim 1～8 any one on print cartridge.

According on the other hand of the present utility model, printing equipment is characterized in that: be provided with the disjunctor chip as claim 1～8 any one on printing equipment.

Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages also can realize and obtain by specifically noted structure in specification, claims and accompanying drawing.

The accompanying drawing explanation

Fig. 1 is existing tetrad chip substrate schematic surface;

Fig. 2 is the circuit connection diagram of existing tetrad chip and printing equipment print cartridge testing circuit;

Fig. 3 A is in order to check the partial circuit schematic diagram of print cartridge installment state in Fig. 2;

Fig. 3 B is 16 kinds of mounting means of four print cartridges and detection electric current I _DETThe corresponding relation schematic diagram;

Fig. 4 is the utility model embodiment mono-tetrad chip substrate schematic surface;

Fig. 5 is the circuit connection diagram of the utility model embodiment mono-tetrad chip and printing equipment print cartridge testing circuit;

Fig. 6 is the equivalent circuit diagram of Fig. 5;

Fig. 7 is the electrical block diagram of the utility model embodiment mono-tetrad chip with the first switch element;

Fig. 8 A is the circuit connection diagram of printing equipment (voltage detecting) print cartridge testing circuit and tetrad chip;

Fig. 8 B is 16 kinds of mounting means of print cartridge and detection voltage V _DETThe corresponding relation schematic diagram;

Fig. 9 is the utility model embodiment bis-tetrad chip substrate schematic surfaces;

Figure 10 be in the utility model embodiment bis-tetrad chips the third and fourth installation and measuring terminal schematic diagram is set;

Figure 11 is that the another kind of the third and fourth installation and measuring terminal in the utility model embodiment bis-tetrad chips arranges schematic diagram;

Figure 12 is the electrical block diagrams of the utility model embodiment bis-tetrad chips with the second switch unit.

The specific embodiment

For describing better the utility model, the existing prior art of at length introducing is prized color printing device by the operation principle of chip detection print cartridge installment state and electric leakage state.

General colored printing device comprises a plurality of print cartridges installation position, and for a plurality of print cartridges are installed, four print cartridges of take here are example.As shown in Figure 2, the chip on four print cartridges is labeled as IC1～IC4 successively, is provided with the terminal group that comprises a plurality of terminals 210～290 on the chip of each print cartridge.Wherein, it is on four angles of terminal group, corresponding one by one with the installation and measuring contact (hereinafter to be referred as detection contact) on printing equipment under the first overvoltage detection terminal 210, the second overvoltage detection terminal 240, the first installation and measuring terminal 250 and the second installation and measuring terminal 290 are arranged on usually.When print cartridge is installed in printer, on print cartridge, the first overvoltage detection terminal 210, the second overvoltage detection terminal 240, the first installation and measuring terminal 250 and the second installation and measuring terminal 290 of chip, electrically contact with detection contact 510,540,550 and 590 respectively.Printing equipment inside is provided with print cartridge testing circuit 502, and it generally includes and detect voltage control division 610, overvoltage test section 620, indivedual installation and measuring section 630, detects pulse generation section 650 and installment state test section 670 not.Wherein, detect voltage control division 610 for to the first installation and measuring terminal 250, providing operating voltage; Overvoltage test section 620 is for detection of between terminal 210,250 and the electric leakage state between terminal 240,290; Indivedual print cartridge installment states detect for the mode by measuring curtage in installation and measuring section 630 individually; Detect pulse generation section 650 and not installment state test section 670 for detection of in printing equipment, whether all print cartridges all are in place.In other words, printing equipment print cartridge testing circuit 502 has the function whether all print cartridges of detection all are in place, detect the electric leakage state and detect indivedual print cartridge installment states.Below do specific descriptions:

Whether one, detect all print cartridges all is in place

As shown in Figure 2, in each chip, the first overvoltage detection terminal 210 and the second overvoltage detection terminal 240 all are connected to each other by distribution.In addition, in the terminal group of chip IC 1, the first overvoltage detection terminal 210 is connected with the not installment state test section 670 in print cartridge testing circuit 502 by corresponding detection contact 510.In the terminal group of chip IC 1～IC4, m(m=1～3) the second overvoltage detection terminal 240 of individual chip IC m connects the first overvoltage detection terminal 210 of m+1 chip IC (m+1) by corresponding detection contact 540 and the detection contact 510 corresponding with the first overvoltage detection terminal 210 of m+1 chip IC (m+1).In the terminal group of chip IC 4, the second overvoltage detection terminal 240 is connected with detection pulse generation section 650 by corresponding detection contact 540.

When all print cartridges all correctly are installed in printing equipment, the detection pulse generation section 650 in printing equipment print cartridge testing circuit 502 with can not connecting in connected state successively because of overvoltage detection terminal in the terminal group of four chips 240,210 between installment state test section 670.On the contrary, do not install or install bad print cartridge as long as have more than one, detect pulse generation section 650 with between installment state test section 670, will with corresponding detection contact 540,510, not contact because of certain overvoltage detection terminal 240,210 or loose contact in connected state not.Therefore, can receive the response signal DPres corresponding with detecting inspection signals DP ins that pulse generation section 650 sends according to installment state test section 670 not, judge whether all print cartridges all are in place.

Two, detect the electric leakage state

As shown in Figure 2, when four print cartridges that chip IC 1～IC4 is housed all correctly are installed in printing equipment, n(n=1～4) the first overvoltage detection terminal 210 of individual chip IC n is connected with the positive pole of n diode 64n in print cartridge testing circuit 502 by corresponding detection contact 510, and the second overvoltage detection terminal 240 is connected with the positive pole of n+1 diode 64 (n+1) by corresponding detection contact 540.In addition, in the terminal group of chip IC 4, the second overvoltage detection terminal 240 is connected with detection pulse generation section 650 by corresponding detection contact 540.The negative pole of these diodes 641～645 is connected on overvoltage test section 620 by mode in parallel, to monitor the first overvoltage detection terminal 210 and the second overvoltage detection terminal 240 places, whether has abnormal high voltage (also claiming overvoltage).This overvoltage usually can the first overvoltage detection terminal 210 of each die terminals subgroup and in the second overvoltage detection terminal 240 certain with the first corresponding installation and measuring terminal 250 and certain in the second installation and measuring terminal 290 between produce when undesirable short circuit has occurred.For example, when the foreign matters such as ink droplet or dust are attached to substrate 10 surperficial, likely undesirable short circuit, i.e. leaky can produced between the first overvoltage detection terminal 210 and the first installation and measuring terminal 250 or between the second overvoltage detection terminal 240 and the second installation and measuring terminal 290.Once this undesirable short circuit has occurred, will flow through the electric current produced because of overvoltage in overvoltage test section 620 via certain in diode 641～645.By detecting this electric current, overvoltage test section 620 just can judge whether to have overvoltage and undesirable short circuit, also judges whether in the electric leakage state.

Three, detect indivedual print cartridge installment states

As shown in Figure 2, in print cartridge testing circuit 502, the input that detects voltage control division 610 is connected with the high voltage source VHV for driving the printing equipment print head, output is connected with indivedual installation and measuring section 630 on the one hand, be connected with the detection contact 550 be connected in parallel to each other on the other hand and the VHO(of output equated substantially with VHV, replacing with VHV therefore following) be loaded on the first installation and measuring terminal 250 in the ink box chip terminal group corresponding with each detection contact 550.In chip IC 1～IC4, be provided with resistive element 204 between the first installation and measuring terminal 250 in same terminal group and the second installation and measuring terminal 290, it is set as identical resistance R usually.In print cartridge testing circuit 502, be provided with the resistive element of the use of connecting with the resistive element 204 on corresponding ink box chip in the connection of each detection contact 590 and indivedual installation and measuring section 630, be labeled as successively 631～634, these resistive elements 631～634 are set as mutually different resistance usually.Particularly, the resistance of the resistive element 63n corresponding with n ink box chip is set as (2 ⁿ-1) R.Thus, when n print cartridge correctly is installed on printing equipment, resistive element 204 in its ink box chip is together in series by resistive element 63n corresponding in the second installation and measuring terminal 290 and the detection contact 590 corresponding with the second installation and measuring terminal 290 and print cartridge testing circuit 502, can form and have 2 ⁿThe installation and measuring of R resistance value with resistance 70n(as shown in Figure 3A).When the print cartridge number that can hold in printing equipment is N, in the situation that during N print cartridge all correctly be installed to printing equipment, installation and measuring is connected in indivedual installation and measuring section 630 with resistance 701～70N with being connected in parallel to each other.The detection electric current I of flowing through in indivedual installation and measuring section 630 thus, _DETFor these installation and measurings remove with the combined resistance value Rc after resistance 701～70N parallel connection the value VHV/Rc that voltage VHV obtains, detect electric current I _DETFor:

$I_{\mathrm{DET}}=\frac{\mathrm{VHV}}{R_C}$

$R_C=R\frac{1}{\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{1}{2^j}}$

In above formula, N is the print cartridge quantity that can install on printing equipment.

As shown in Figure 3 B, when N=4, four print cartridges have 2 ⁴Kind of installment state, these 16 kinds of installment states are corresponding to optional 1～4 and 16 kinds of combinations obtaining from four ink box chip IC1～IC4.The flow through detection electric current I of indivedual installation and measuring section 630 of utilization _DETCan identify uniquely these installment states.In other words, in order to carry out unique identification to 16 kinds of installment states of four print cartridges, installation and measuring need to make 16 kinds of combined resistance value Rc under installment state different with the choosing of each resistance of resistance 701～704.

When four print cartridges are all correctly installed, the combined resistance value is Rc1, with it corresponding detection electric current I _DETCan reach maximum I _maxWhen only having the print cartridge corresponding with the resistive element of resistance maximum in print cartridge testing circuit 502 not to be mounted, the combined resistance value is Rc2, and Rc2 is arranged>Rc1.In the present embodiment, in print cartridge testing circuit 502, the resistance of the resistive element 634 of resistance maximum is 15R, draws thus, when the print cartridge corresponding with resistive element 634 is not mounted, detects electric current I _DETReach maximum I _max0.93 times.Thus, for the present embodiment, can a threshold current I given in advance _Thmax, its value meets 0.93I _max<I _Thmax≤ I _max, when indivedual installation and measuring section 630 detects the detection electric current I of flowing through _DET>=I _ThmaxThe time, can judge that four print cartridges are all correctly installed.

In addition, in prior art, electric current I also will detect in installation and measuring section 630 individually _DETConvert corresponding digital detection signal SI to _DET, send to the central processor CPU of printing equipment.CPU is which state in 16 kinds of installment states according to the signal determining received.When being judged to be more than one print cartridge and not installing, CPU preferably shows on the display floater of printing equipment that the relevant information of installment state (word and/or image) is not notified the user.

Yet, in practical operation, when printing equipment is identified the print cartridge with said chip, the wrong report phenomenon can often occur.This is to have gap because said chip usually shares a substrate and settles between the little baseplate part of each chip, substrate surface can be because of problem out-of-flatnesses such as production or installations, and the installation and measuring terminal on each little substrate is in order to coordinate the detection contact of printing equipment, be disposed on four angles of terminal group, tend to because substrate surface out-of-flatness or detection contact are lax and easily cause loose contact, thereby cause printing equipment to think that print cartridge is not mounted and reports phenomenon by mistake by mistake.In addition, for the mounting testing circuit of correct response printing equipment, often the installation and measuring terminal on each little baseplate part is furnished with the response device, thereby has caused chip structure complexity and cost to increase, and is unfavorable for the reset operation of chip simultaneously.Therefore the utility model improves said chip, to provide a kind of structure simpler, reset convenient, can coordinate the chip of the mounting testing circuit identification print cartridge of printing equipment, this chip both can be arranged on print cartridge, also can be arranged on printing equipment.

As shown in Figure 4, Figure 5, be the tetrad chip of the utility model embodiment mono-.Same as the prior art is, the substrate 10 of this chip has concatenating group board 100, this concatenating group board 100 is linked by four little baseplate parts 101～104 with four print cartridge pairings, be provided with on each little baseplate part and comprise a plurality of certain terminal numbers of terminal 110～190(that contact use with detection contact and can be not limited to this) terminal group, and included in each terminal group:

The first installation and measuring terminal 150, can be connected with the detection voltage control division 610 in printing equipment print cartridge testing circuit 502 by corresponding detection contact 550;

The second installation and measuring terminal 190, can be by corresponding detection contact 590 after the resistive element 63n with corresponding in printing equipment print cartridge testing circuit 502 series connection, with indivedual installation and measuring section 630, is connected.

Unlike the prior art, in chip, the first installation and measuring terminal 150 of all terminal groups is connected to each other and forms the first equipotential line L1 by distribution, the second installation and measuring terminal 190 is connected to each other and forms the second equipotential line L2 by distribution, and the resistance unit that is r by resistance between first and second equipotential line L1, L2 801 connects, r >=0.

As shown in Figure 5, Figure 6, when four print cartridges that above-mentioned tetrad chip is housed are installed in printing equipment, according to operation principle same as the prior art, electric current I detects by detection in the indivedual installation and measuring section 630 in printing equipment print cartridge testing circuit 502 _DETValue judge 16 kinds of installment states of four print cartridges.Description according to front, after resistive element 631～634 in print cartridge testing circuit 502 is in parallel, with resistance unit 801, connect, wherein, the resistance of resistive element 631～634 is fixed value, the resistance r of resistance unit 801 affects combined resistance value Rc, and then impact detects electric current I _DET, so resistance unit 801 is chosen suitable different resistances and can be made indivedual installation and measuring section 630 detect different print cartridge installment states.

In addition, from aforementioned, can be by relatively detecting electric current I _DETJudge whether that with current value given in advance all print cartridges all are in place.As a threshold current I is set _Thmax, I _Rc2max<I _Thmax≤ I _Rc1max, when indivedual installation and measuring section 630 detects the detection electric current I of flowing through _DET>=I _ThmaxThe time, can judge that all print cartridges all are in place, wherein, I _Rc2maxWhile only having the print cartridge corresponding with the resistive element of resistance maximum in print cartridge testing circuit 502 not to be mounted, the detection current value that installation and measuring section 630 detects individually, I _Rc1maxAll print cartridges while all being in place, the detection current value that indivedual installation and measuring section 630 detects.In this case, in printing equipment print cartridge testing circuit 502, the resistance of resistive element sets gradually as (2 ⁿ-1) R, during n=1～N, in chip, the resistance r of resistance unit 801 need meet the following conditions:

$0\&le;r<R\frac{1}{\underset{j=1}{\overset{N-1}{\mathrm{\&Sigma;}}}\frac{1}{2^j}}-R\frac{1}{\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{1}{2^j-1}}.---\left(1\right)$

Certainly, be further to improve the reliability that printing equipment is recognized machine, also can require indivedual installation and measuring section 630 the detection electric current I of flowing through only to be detected _DET>=I _Rc1maxThe time, just judge that all print cartridges all are in place.In this case, in printing equipment print cartridge testing circuit 502, the resistance of resistive element sets gradually as (2 ⁿ-1) R, during n=1～N, in chip, the resistance r of resistance unit 801 need meet the following conditions:

$0\&le;r<R\frac{1}{\underset{j=1}{\overset{N-1}{\mathrm{\&Sigma;}}}\frac{1}{2^j}}-R\frac{1}{\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{1}{2^j-1}}.---\left(2\right)$

In the present embodiment, four print cartridges can be installed at most on printing equipment, in printing equipment print cartridge testing circuit 502, the resistance of the resistive element 631～634 corresponding with four terminal groups is according to (2 ⁿ-1) R, the rule of n=1～N is set as respectively R, 3R, 7R, 15R.

If the resistance r of resistance unit 801 is set according to formula (1), as long as r meets the R of 0≤r<(8/7-35/54), when indivedual installation and measuring section 630 detects I _DET>=I _ThmaxThe time, will detect electric current I _DETConvert corresponding digital detection signal SI to _DETSend to the CPU of printing equipment, CPU is according to the digital detection signal SI received _DETJudge that all print cartridges all are mounted, thereby allow printing operation.Wherein, from introducing of front, threshold current I _ThmaxAt 0.93I _maxAnd I _maxBetween value.

If the resistance r of resistance unit 801 is set according to formula (2), as long as r meets the R of 0≤r<(16/15-35/54), when indivedual installation and measuring section 630 detects I _DET>=I _maxThe time, will detect electric current I _DETConvert corresponding digital detection signal SI to _DETSend to the CPU of printing equipment, CPU is according to the digital detection signal SI received _DETJudge that all print cartridges all are mounted, thereby allow printing operation.Wherein, from introducing of front, I _maxAll print cartridges while all being in place, the detection current value that indivedual installation and measuring section 630 detects.

Above chip structure is simple, only use a resistance even wire (situation of r=0) connect the installation and measuring requirement that first and second equipotential line L1, L2 just can meet existing printing equipment, effectively reduce cost.Simultaneously, in order to solve in prior art because the problem that the requirement that resets must be extracted chip, in above-described embodiment, can also arrange the first switch element 802(as shown in Figure 7 on the connection distribution of first and second equipotential line L1, L2).When chip need to reset, at first the first switch element 802 ends, and installation and measuring section 630 detects the detection electric current I individually _DET=0, make printing equipment think that print cartridge extracts, then the first switch element 802 conducting again, indivedual installation and measuring section 63 detects the detection electric current I _DET>=I _Thmax, make printing equipment think that new print cartridge all is in place.Here, the first switch element both can be arranged on chip substrate can supply the manually operated switching device of user (as button), can be also to be integrated in the on-off circuit that chip internal is controlled automatically, when the residue China ink amount recorded in chip reaches the China ink amount threshold value of prior appointment, on-off circuit is opened automatically, carry out and first disconnect closed again operation, extracting and inserting with the simulation print cartridge.Wherein, China ink amount threshold value can for full China ink 0～30% between arbitrary value.Like this, the user is without extracting and reinstall from printing equipment with the print cartridge of chip, thereby the time of having saved has also reduced the ink leak probability.

More than to realize that in printing equipment, all print cartridges once reset simultaneously, yet, due to the ink consumption degree difference of respective color in each print cartridge of colored printing, therefore usually need to realize the local reset of chip.For this reason, in above-described embodiment one, resistance unit 801 can be set to the adjustable variable resistor unit of resistance (can be both variable resistor, can be also variable resistance circuit) further, be connected with the controller of chip internal, by controller, control change in resistance.Take the tetrad chip as example, when first print cartridge need to reset, first the resistance of resistance unit 801 be adjusted to r=(16/7-35/54) R, installation and measuring section 630 detects corresponding detection electric current I individually _DET, make printing equipment think that first print cartridge is pulled out; And then the resistance of resistance unit 801 is adjusted to the R of r≤(16/15-35/54), indivedual installation and measuring section 630 detects the detection electric current I _DET>=I _Thmax, make printing equipment think that first print cartridge is in place.Similarly, when second print cartridge need to reset, first the resistance of resistance unit 801 is adjusted to r=(16/11-35/54) R, and then be adjusted to the R of r≤(16/15-35/54); When the 3rd print cartridge need to reset, first the resistance of resistance unit 801 is adjusted to r=(16/13-35/54) R, and then be adjusted to the R of r≤(16/15-35/54); When the 4th print cartridge need to reset, first the resistance of resistance unit 801 is adjusted to r=(16/14-35/54) R, and then be adjusted to the R of r≤(16/15-35/54).By that analogy, as long as resistance unit 801 can at least change N kind resistance, at 2 of N print cartridge ^NUnder kind of installment state, make indivedual installation and measuring section 630 at least detection current value I of the different sizes of N kind can be detected _DETOr detection magnitude of voltage V _DET, can realize single print cartridge reset function.

It should be noted that, electric current I normally detects by detection in the indivedual installation and measuring section 630 of the print cartridge testing circuit 502 in printing equipment _DETJudge the installment state of indivedual print cartridges.Yet, in prior art, the printing equipment that part is also arranged is by detecting voltage V _DETSubstitute and detect electric current I _DETRealize above-mentioned functions.As shown in Figure 8 A, detect voltage V _DETBy combined resistance Rc and other resistance R ₀Supply voltage VHV is carried out dividing potential drop and obtains:

$V_{\mathrm{DET}}=\mathrm{VHV}\frac{R_0}{{\mathrm{<figure-callout\; id="0"\; label="R"\; filenames="HDA00003415222800011.png,HDA00003415222800052.png"\; state="\{\{state\}\}">R</figure-callout>}}_0+R_C}$

$R_C=R\frac{1}{\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{1}{2^j}}$

For the printing equipment of this class voltage detecting type, the utility model is applicable too.As shown in Figure 8 B, with the tetrad chip, when the R of the resistance r of resistance unit 801≤(16/15-35/54), detect voltage V _DET>=V _Thmax, printing equipment judges that all print cartridges all are in place, thereby allows printing operation.

As shown in Figure 9, Figure 10, it is the tetrad chip of the utility model embodiment bis-, it has done further expansion on the basis of embodiment mono-, in the outermost terminal group of chip one end, the 3rd installation and measuring terminal 110 is set, the 4th installation and measuring terminal 140 is set in the outermost terminal group of the chip other end:

The 3rd installation and measuring terminal 110, be connected with the not installment state test section 670 in printing equipment print cartridge testing circuit 502 by corresponding detection contact 510;

The 4th installation and measuring terminal 140, be connected with the detection pulse generation section 650 in printing equipment print cartridge testing circuit 502 by corresponding detection contact 540;

And the 3rd installation and measuring terminal 110 is connected by the distribution short circuit with the 4th installation and measuring terminal 140.

When the print cartridge that above-mentioned tetrad chip is housed correctly is installed in printing equipment, the pulse signal DPins that detection pulse generation section 650 sends can be transferred to not installment state test section 670 via the 4th installation and measuring terminal 140 and the 3rd installation and measuring terminal 110 of chip.Thus, can receive the response signal DPres corresponding with detecting inspection signals DP ins that pulse generation section 650 sends according to installment state test section 670 not, judge whether that all print cartridges all are in place.Owing to only in the outermost terminal group in chip two ends, setting up the 3rd installation and measuring terminal 110 and the 4th installation and measuring terminal 140 in the present embodiment, therefore compared with prior art, not only reduced the probability of chip terminal loose contact, but also simultaneously reduced between the 3rd installation and measuring terminal 110 and the first installation and measuring terminal 150, and the short circuit probability between the 4th installation and measuring terminal 140 and the second installation and measuring terminal 190.As shown in figure 10, the 3rd installation and measuring terminal 110 is connected with overvoltage test section 620 by diode 641, the 4th installation and measuring terminal 140 is connected with overvoltage test section 620 by diode 645,620 of overvoltage test sections need to detect between the 3rd installation and measuring terminal 110 and the first installation and measuring terminal 150, and whether the 4th be short-circuited between installation and measuring terminal 140 and the second installation and measuring terminal 190, just can judge whether in the electric leakage state.

As shown in Fig. 4, Figure 11, in above-described embodiment two, include a pair of the 3rd installation and measuring terminal in each terminal group and the 4th installation and measuring terminal 110,140 is also feasible.Just need to choose respectively the 3rd an installation and measuring terminal 110 and the 4th an installation and measuring terminal 140 from being arranged in the outermost terminal group in chip two ends, they are connected by the distribution short circuit, and the third and fourth remaining installation and measuring terminal 110,140 is all unsettled.Compared with prior art, this structure can reduce the probability of chip terminal loose contact equally.Simultaneously, because the third and fourth installation and measuring terminal 110,140 of remainder is all unsettled, even therefore between remaining the 3rd installation and measuring terminal 110 and the first installation and measuring terminal 150, and be short-circuited between the 4th remaining installation and measuring terminal 140 and the second installation and measuring terminal 190, can not cause damage to the chip internal circuit yet, the operation principle of its detection of electrical leakage, with front identical, repeats no more herein.

As shown in figure 12, similarly, in order to solve in prior art because the problem that the requirement that resets must be extracted chip, in above-described embodiment two, can in the connection distribution between the 3rd installation and measuring terminal 110 of choosing respectively and the 4th installation and measuring terminal 140, second switch unit 804 be set from the outermost terminal group in chip two ends.When chip need to reset, at first second switch unit 804 disconnects, installment state test section 670 not can't detect response signal DPres, make printing equipment think that print cartridge is pulled out, then second switch unit 804 is closed again, installment state test section 670 does not detect response impulse DPres, makes printing equipment think that new print cartridge all is in place.Here, the setting that second switch unit 804 can adopt with in embodiment mono-, the first switch element 802 is identical repeats no more herein.

It should be noted that; although above-described embodiment only be take the tetrad chip as example; but the utility model is actual, can also be applied in the multi-joint chips such as 5-linked chip, six chips, seven chips; and wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.

Claims (10)

1. a disjunctor chip, is characterized in that, comprises substrate and be arranged on described substrate and N N the terminal group that print cartridge is corresponding, N > 1, in each described terminal group, include:

For the first installation and measuring terminal be electrically connected to the detection voltage control division of printing equipment print cartridge testing circuit;

After connecting for the resistive element corresponding with printing equipment print cartridge testing circuit, the second installation and measuring terminal be electrically connected to indivedual installation and measuring section in printing equipment print cartridge testing circuit;

All first installation and measuring terminals of a described N terminal group are connected to each other by distribution, form the first equipotential line, all second installation and measuring terminals of a described N terminal group are connected to each other by distribution, form the second equipotential line, and connect its resistance r >=0 between described first and second equipotential line by resistance unit.

2. disjunctor chip as claimed in claim 1, it is characterized in that: the resistance of described resistance unit is fixed, and the resistance of the resistive element corresponding with a described N terminal group is followed successively by (2 in described printing equipment print cartridge testing circuit ⁿ-1) R, in the situation of n=1～N, the resistance r of described resistance unit meets the following conditions:

$0\&le;r<R\frac{1}{\underset{j=1}{\overset{N-1}{\mathrm{\&Sigma;}}}\frac{1}{2^j}}-R\frac{1}{\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{1}{2^j-1}}.$

3. disjunctor chip as claimed in claim 2, it is characterized in that: also be provided with the first switch element on the connection distribution between described first and second equipotential line, described the first switch element and described resistance unit are connected in series.

4. disjunctor chip as claimed in claim 1, it is characterized in that: described resistance unit is the adjustable variable resistor unit of resistance, and described resistance unit can at least change N kind resistance, at 2 of N print cartridge ^NUnder kind of installment state, make described indivedual installation and measuring section the detection current values of different sizes of N kind at least can be detected or detect magnitude of voltage.

5. disjunctor chip as claimed in claim 4, it is characterized in that: described disjunctor chip internal also is provided with and is connected with described resistance unit and regulates the controller of its resistance size.

6. disjunctor chip as claimed in any one of claims 1 to 5, wherein, it is characterized in that: be positioned at the outermost terminal group of described disjunctor chip one end and also comprise the 3rd installation and measuring terminal, be positioned at the outermost terminal group of the described disjunctor chip other end and also comprise the 4th installation and measuring terminal, described the 3rd installation and measuring terminal is for being electrically connected to the not installment state test section of printing equipment print cartridge testing circuit; Described the 4th installation and measuring terminal is for being electrically connected to the detection pulse generation section of printing equipment print cartridge testing circuit; Between described the 3rd installation and measuring terminal and the 4th installation and measuring terminal, short circuit is connected.

7. disjunctor chip as claimed in claim 6 is characterized in that: being connected on distribution between described the 3rd installation and measuring terminal and the 4th installation and measuring terminal also is provided with the second switch unit.

8. disjunctor chip as claimed in claim 7 is characterized in that: described second switch unit be arranged on described disjunctor chip substrate for the manually operated switching device of user and be integrated in judgement that whether described disjunctor chip internal can be automatically reach predetermined threshold value according to the residue China ink amount recorded in the disjunctor chip is disconnected or closed on-off circuit in a kind of.

9. a print cartridge, is characterized in that: be provided with disjunctor chip as described as claim 1～8 any one on described print cartridge.

10. a printing equipment, is characterized in that: be provided with disjunctor chip as described as claim 1～8 any one on described printing equipment.

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