CN1029027C - Recording apparatus and ink cassette therefor - Google Patents

Abstract

A recording apparatus includes a recording head for effecting an recording operation on a recording material while it is being moved; a plurality of detectors for detecting plural conditions of the apparatus; a controller for effecting the recording operation in accordance with the conditions detected by the detectors; the plurality of detectors includes a detecting element movable together with the recording head and a plurality of members to be detected corresponding to the conditions of the apparatus and disposed along a movement path of the detecting element.

Description

Recording apparatus and ink cassette therefor

The present invention relates to a kind of string type recording unit, this equipment disposition has the balladeur train that is used for carrying a record-header, and this record-header then preferably is loaded on this balladeur train in separable mode, simultaneously, the invention still further relates to a kind of ink cassette that is used for this equipment.

The present invention is particularly useful for a kind of recording unit of ink jet type, and it also has the recovery function of the ink in autofeed function and absorption record-header or the like except having common defeated paper function.

In addition, the invention still further relates to a kind of ink cassette that plays the ink tank effect, it is installed on this recording unit in separable mode.

As a kind of recording unit, particularly as a kind of series printer, need the balladeur train that has record-header above being used for motion, be used for the conveyer of conveyance of sheets one class recording medium, and a kind of autofeed mechanism.Remove this, when this recording unit belongs to the ink jet type, the record-header capping device that prevents to make because of the ink dried of contiguous ink jet exit the ink jet inefficacy need be arranged also, and pumping installation.In this traditional kind equipment, above-mentioned various mechanisms and device generally are the independent gear drivings by motor, spiral pipe and/or similar means.

In comparatively cheap a kind of recording unit, adopt a reversible motor to realize multi-jobbing.

But, when providing independently transmission power source respectively, then can cause the equipment high price and need to consume the space of wiring for it for different functions.Can adopt reversible motor to combine with autofeed (ASF) and play the transmission power source effect for defeated paper with one-way clutch, so but can not oppositely fail paper, also just weakened the function of equipment, in addition, along with the increase of multi-functional mechanism also makes mechanism complicated.

Figure 16 is the skeleton view as the ink jet printer of a typical case of this class recording unit.

Figure 17 is the detailed side view of the ink jet printer part of Figure 16.

This kind equipment comprises that one transports to the friction roller 5 of record position by friction with recording chart.Friction roller 5 is bearing on the axle 43, and the latter does not show bright left plate and right plate supporting in the conveyer again thus.Recording chart 6 is drawn before the periphery of friction roller 5 by a paper disc 38, and does not show that by one the bright roll-in that compresses contacts on the friction roller 5.Like this, when friction roller 5 rotated, recording chart 6 promptly borrowed friction force to transport on the pressboard 4 that is located at friction roller and top.The rotation of friction roller 5 is to be realized by the intermediate gear on the axle that is fixed in friction roller 43 20 by a feeding motor 21.8 pairs of recording charts that transfer to pressboard 4 of paper restraining plate play guide effect, and the record surface that makes it to push plate 4 to and make this recording chart keeps smooth along plate 4.

Record surface towards plate 4 determined recording charts has an ink jet record-header that is installed on the balladeur train 2.More particularly, this balladeur train 2 is slidably to cooperate with the axis of guide 3 and back one axis of guide 45, and this back axis of guide does not then show that with respect to this place, printing frame 44 opposite ends the pressboard 4 of bright left and right side plate extends in parallel.Balladeur train 2 links to each other with the part of a toothed belt 47, and this toothed belt is parallel with the axis of guide 2, walks around the belt pulley on the printing machine opposite end.Like this, balladeur train 2 just can be moved along the axis of guide 3 and the back axis of guide 45 by this toothed belt 47 by a carriage motor 46.Along with above-mentioned motion, ink jet record-header 1 is just finished its record operation.This record-header starts so that carry out record by the tracer signal that record-header cable 48 provides according to the controller that is located on the printed circuit board (PCB).

In the activation record head, promptly give ink jet record-header 1 by an ink barrel 50 and an additional reservoir 51 with the ink spray feed by an ink cassette 27.Recording areas one adjacent position that is being covered by ink jet record-header 1 movable range, be provided with a retracting device 52, it comprise one can towards or the lid 13 that deviates from this record-header 1 ink jet lateral movement, and one can cover the bright pump that do not show that 13 ink jet exits are drawn ink by this.Adjacent with retracting device 52 and, be used for removing residual ink, water droplet, dust or similarly be deposited on material on the ink jet side surface of this record-header along being provided with a remover 26 on the motion path of record-header 1.

What reference number 11 was indicated is an original position sensor, is used for judging the position of this movable record-header 1, is that position when detecting the part of balladeur train with this sensor 11 is as the original position here.Also promptly this writes down cephalomotor reference position as control with this.What indicate with reference number 53 then is the ink cassette sensor, is used for judging whether the ink cassette of this supply ink has installed on this equipment.

Figure 17 is the detailed side view of retracting device 52 among Figure 16.The lid 13 of record-oriented head 1 ejection side all is movable with the pump 24 that is used for drawing ink, by the rotation of a pump cam 23, can move at left and right directions among this figure and above-below direction respectively.Cam 23 does not show that by one bright pump motor drives.In order to distinguish the turned position of this cam 23, in a side of this cam 23 a retracting device original position sensor 11 is housed and detects, and with the turned position storage that detects, control according to the degree of rotation of this memory location again and cover 13 and the operation of pump 24.

But when adopting said structure, the lead of making various differentiation usefulness in recording unit is a dispersed placement, thereby from this sensor to having the printed-wiring board (PWB) 49 that comes the controller of controlling recording equipment according to the sensor result of detection, the wiring between them is very complicated.Such wiring is also further complicated because of following situation, promptly also has to be used for tracer signal is offered the record-header cable 48 of record-header 1.Complicated wiring has caused the high price of equipment, also needs very long lead simultaneously.

In addition, after the said equipment is complicated, is used for surveying and is loaded on ink cassette on the recording unit with removably whether mechanism on the throne has also brought problem.

Therefore, fundamental purpose of the present invention promptly is to provide a kind of recording unit, on the balladeur train of this equipment, sniffer is housed, just can differentiate the various conditions of this equipment according to the result of detection of this type of sniffer on predetermined sledge position, and according to these conditions, just can make the unlikely dispersion of wiring of various sensors, maintenance and assembling are more easily carried out.

According to this ingredient of the present invention, a kind of recording unit that can be engaged in the record operation at the record-header motion process on recording medium is provided, wherein there is a sniffer to be used for surveying the multiple condition of this equipment, and this equipment can be controlled according to the output of sniffer, this a collection of sniffer comprises that then one can be with the cephalomotor detecting element of record, and a collection of according to relevant parameter along move to be detected of distance configuration of above-mentioned detecting element.Utilization possesses the equipment of said structure, just can be in the cephalomotor various conditions that detect this equipment simultaneously of record, and in addition, these detectable signals can come the activation record head along the routing path transmission again.

Another object of the present invention provides a kind of recording unit, and one of them transmission power source can be used for being associated to realize multi-functional with the motion of balladeur train outside its recording areas selectively.

In this ingredient of the present invention, a kind of have balladeur train and the equipment that is located at the record-header on this balladeur train are provided, record operation is wherein carried out when recording medium moves at this balladeur train, have simultaneously a transmission power source be used for one roughly with the vertical substantially direction base conveying recording medium of sledge movements direction, this equipment comprises that a series of transmission power sources for this reason drive and comply with the gear of the direction arrangement that parallels with the sledge movements direction, also comprise simultaneously one outside recording areas with balladeur train meshed gears spare, and this gear member also can be corresponding to selected in sledge position and this a row gear engagement, here, recording medium can by with this batch gear member in one of that gear member of engagement carry, and just can be engaged in the operation that is different from other conveying recording medium operation when in this batch gear member another is meshed when this gear member.

According to this ingredient of the present invention, this gear member that can be engaged with outside recording areas when balladeur train just can be corresponding to a selectable engagement in sledge position and this batch gear, thereby just can be with conveying recording medium one of in this batch gear; And, just can be engaged in another kind of operation by means of same driving force by this gear member is meshed with in this batch gear of this balladeur train another position another.Like this, do not need labyrinth just can carry out different operations by a transmission power source.

Another ingredient of the present invention then is to handle such problem, situation in being same as first ingredient of the present invention is such, the path of one movable member along it detected it, and suppose of going out to be detected or a collection of parts be towards or when deviating from this path movement, then depend on the position that goes out to be detected of this parts, just can influence the motion of this movable member.According to this ingredient of the present invention, the ink cassette (movable member) for being installed in removably in this recording unit disposes a blocking mechanism.

Another purpose of the present invention is to provide a kind of undersized recording unit by the detection agency that improves ink cassette.

Another purpose again of the present invention provides a kind of recording unit that aforesaid one or more ingredient is made improvements.

The present invention above with other purpose, characteristics and advantage, will be by more clear with reference to the present invention does following description to most preferred embodiment in conjunction with the accompanying drawings.

Fig. 1 is the skeleton view according to the complete ink jet printer of one embodiment of the invention.

Fig. 2 is the side view of the balladeur train of the ink cassette among Fig. 1.

Fig. 3 is the synoptic diagram of illustrating a kind of light-transmission type sensor.

Fig. 4 is the perspective schematic view of explanation sniffer operation.

Fig. 5 is the control flow chart of sniffer shown in Figure 4.

Fig. 6 is the synoptic diagram of explanation ink jet printer operation.

Fig. 7 A and Fig. 7 B are the process flow diagrams of explanation control operation shown in Figure 6.

Fig. 8 is the perspective schematic view of a sniffer operation of explanation second embodiment of the invention.

Fig. 9 is the process flow diagram of explanation sniffer operation shown in Figure 8.

Figure 10 and 11 is explanation sectional views when detecting the no record medium according to the third embodiment of the present invention.

Figure 12 is the perspective schematic view of explanation sniffer operation shown in Figure 11.

Figure 13 is the synoptic diagram of explanation according to the reflection sensor of the fourth embodiment of the present invention.

Figure 14 is the skeleton view that the operation of sensor shown in Figure 13 is described.

Figure 15 is the process flow diagram of explanation sniffer operation shown in Figure 14.

Figure 16 and 17 is respectively a kind of skeleton view and part side view of common ink jet printer.

Figure 18 is the sectional view that is equipped with the recording unit of autofeed device (ASF).

Figure 19 and 20 is skeleton views that the transmission gear switching mechanism is described according to another ingredient of the present invention.

Figure 21 A explanation is used for the transmission gear switching mechanism of mechanism shown in Figure 19 and 20.

Figure 21 B understands the slide teeth wheel shaft that is used in Figure 21 A mechanism in detail.

Figure 22 A, 22B and 22C explanation engages situation according to an ingredient of the present invention between the supporting member of balladeur train and lid.

Figure 23 is a skeleton view, shows the gear teeth that has improved in the transmission gear throw-over gear of a bright foundation ingredient of the present invention.

Figure 24 A, 24B, 25A and 25B show and understand a kind of mechanism that is used to survey ink cassette, and wherein Figure 24 A and 25A are depicted as ink cassette and are unkitted and are downloaded to this equipment situation before, and Figure 24 B and 25B are depicted as the situation of loading ink cassette.

With reference now to accompanying drawing, most preferred embodiment of the present invention is described in detail in detail.

In the following description, adopted similar front to a kind of ink jet printers described in the conventional equipment, thus in Fig. 1 to 15 identical reference number number in use and Figure 16 and 17, for the sake of simplicity, also just omitted detailed description to them.

Fig. 1 to 7 explanation is according to the sniffer of the ink jet printer of first embodiment of the invention.

Fig. 1 is a kind of skeleton view of ink jet printers, and its general layout is described.Fig. 2 is the balladeur train and the ink cassette of this ink jet printer.Fig. 3 is a schematic top view, is used for illustrating the principle of work of the transparent type sensor of the sniffer that is used for present embodiment.Fig. 4 is a skeleton view, and the elemental operation of sniffer is described.Fig. 5 is the process flow diagram of explanation sniffer controlled step.Fig. 6 shows the position of understanding the balladeur train with sniffer and the relation between various operation.Fig. 7 A and 7B are the process flow diagrams of the above-mentioned controlled step of explanation.

As Fig. 1 and shown in Figure 2, ink jet record-header 1 is installed on the balladeur train 2, and the latter can slide along an axis of guide 3 during towards pressboard 4 when the ejection side of record-header 1.Rotation by friction roller 5 can be supplied with plate 4 with a recording chart 6, makes record-header 1 realize record on recording chart.Balladeur train 2 has the spring part 2a of a global formation, and the mode that it can slide engages with rail 7a on being configured in paper guide 7.By engaging of this spring part 2a and rail 7a, balladeur train 2 promptly is forced to enter the rotation direction around the axis of guide 3.Balladeur train 2 is provided with a seat part 2b in its slide plate side.Rotation by spring part 2a pushes, and this seat part 2b is affixed to a paper restraining plate 8.Be about to recognize that balladeur train 2 begins to slide when seat part 2b and 8 sliding contacts of paper restraining plate, like this, record-header 1 is just separated a predetermined gap with recording chart 6.So just can carry out stable record operation.

1 rear side place is provided with electric contact with the receiving record signal at contiguous record-header.These electric contacts and a record-header web member 9 are electrically connected.10 of record-header printed circuit board (PCB)s do not show that by one bright record-header cable and does not show that bright printed circuit board (PCB) is carried out and is electrically connected.Balladeur train 2 also is provided with the original position sensor 11 of a light-transmission type forms of sensor and the wide acquisition sensor 12 of paper of an optical reflective-type sensor form.Original position sensor 11 is used for differentiating the various conditions in the recording unit.The width of recording chart 6 is surveyed in 12 utilizations of the wide acquisition sensor of paper from recording chart 6 and the light reflection difference that comes from other parts.

The lid 13 of retracting device is mounted on retracting device one motion parts 14.Along with retracting device motion parts 14 along the moving of retracting device axle 15, lid 13 promptly by the motion that is located at the cam 16 that covers 13 rears towards or deviate from record-header 1 ink-jet printing and move, and can determine selectively to add a cover or not add a cover state.The left-hand of retracting device motion parts 14 motion is at balladeur train 2 during to left movement among Fig. 1, and arm 17 by retracting device combines with the projection 2c of balladeur train 2 and realizes.On the other hand, the motion of the dextrad of this motion parts 14 then is owing to spring 18 thrust to the right reaches.

What reference number numbers 19 was indicated is a kind of convertible change gear train, and it determines that according to the position of balladeur train 2 with retracting device motion parts 14 different speed change pads is with slewing rate.More particularly, be that the driving force with feeding motor 21 passes to middling speed feed gear wheel 20 by change gear train 19, rotating integrally formed pump cam 23, drive pump 24 by the latter.

In the movable zone of record-header 1 and with lid 13 adjacent positions, be provided with absorption plant 25 and remover 26.When record-header 1 motion, absorption plant is lip-deep water droplet of absorbing recording head ejection side or similar substance, and remover 26 is promptly removed top dust or residual ink.

Contiguous place disposes a balladeur train guide 28 in record-header behaviour area left-hand end, along ink cassette 27 can be packed into this equipment or unload from it of this guide, is fixed on needle pin on this guide 28 with one and inserts in this case or take off from it in this process.Ink in the ink cassette 27 does not show bright ink barrel supply record-header 1 by one.Place, a fixed position is provided with an original position probe mark 30 on guide 28, is used for determining the position of balladeur train 2.These original position sign 30 motions by balladeur train 2 are disposed at a slit place of the original position sensor 11 of balladeur train 2.According to this sign, can detect this kind original position.Similarly, in Fig. 1 on the guide 28 left side of original position probe mark 30 an ink cassette probe mark 31 is arranged.When ink cassette 27 plugs together on the guide 28, just oppress the last lug boss 28b of ink cassette bar 28a of guide 28 global formations therewith, this just makes this bar 28a flexibly crooked, thereby makes it up till now hold 28c to move backward.So the cam 31a of ink cassette probe mark 31 just by on push away, similarly, the axle 31b of ink cassette probe mark 31 rotates, and makes sign 31 fixing (downwards).And when sign 31 fixing (making progress), the result will make original position sensor 11, be detected ink cassette 27 thus and not exist from the on-state to the off-state by the motion of balladeur train 2.

The original position probe mark 32 that is used for retracting device is assembled into, and the axle 32a that can be set around Fig. 1 China and Mexico water tank guide 28 back rotates.This probe mark 32 has a 32c of sign portion and a 32b of bar portion, and the latter is formed on from the 32c of sign portion and crosses on the position of a 32a.When the 32b of bar portion was the lug boss 23a reduction of pump cam 23, the 32c of sign portion promptly navigated in the motion path of balladeur train 2.At this moment, sensor 11 and the 32c of sign portion promptly combine owing to the motion of balladeur train 2, thereby go out retracting device and be in its original position with regard to detectable.If the latter is not in its original position, the 32c of this sign portion is with regard to no-fix, and retracting device does not just detect yet.

The original position sensor 11 that is used for present embodiment as shown in Figure 3, is a kind of sensor of light-transmission type.Usually, the light that is sent by light-emitting component 33 is received by light receiving element 34, makes this sensor be in on-state.When this corresponding sign navigated in the above-mentioned slit, the light that sends from light-emitting component 33 promptly was cut off, and feasible electric current by light receiving element 34 stops (sensor becomes off-state), thereby is detected the existence of sign.

Referring to Fig. 4 and 5, wherein described for surveying the example that various conditions are controlled.Fig. 5 is the flow graph of initial several roads step in the ink jet printer.

For shown in Figure 4, the sign that the fixed signal 30 of original position detection usefulness, ink cassette are surveyed usefulness is regarded it as and the sign of retracting device original position detection usefulness is all arranged according to their serial numbers from small to large in this figure from right to left.In order to make original position probe mark 30 at first can detect the initial position of record-header 1, it is right-hand to allow balladeur train 2 shift to by one section distance that is not less than (L1+L2) in step S51 in Fig. 4, and then allow this balladeur train 2 in step S52 to left movement.At step S53, simultaneously whether this sign has been detected in balladeur train 2 motion and to have differentiated.When this sign is detected out, promptly the sign that detects of decidable this first is the fixed signal 30 that usefulness is surveyed in the original position.At step S54, above-mentioned position is promptly stored as original position 4.At step S55, balladeur train 2 is by one section approximate (L ₁+ L ₂) distance shift to left from original position A, like this, original position sensor 11 just enters the position C among the figure, can survey the retracting device original position immediately and survey position with the 32c of sign portion of sign 32.At this, balladeur train 2 remains in present position C, and pump cam 23 lower-lefts one step S56 promptly rotates 0 owing to this rotation, the 32c(of the sign portion step S57 of just detectable retracting device original position probe mark 32), then with of the original position storage of this position as pump cam 23 left step S58.

After having finished above-mentioned initial job,,, balladeur train 2 and pump cam 23 are controlled by with respect to these original position motion or the turned known number of degrees promptly based on above-mentioned original position of having stored.When balladeur train 2 moves to when making original position sensor 11 arrive at position B, the state of original position sensor 11 is just detected, and can determine whether fit on of ink cassette 27 in view of the above.

In the ink jet printer of first embodiment of the invention, use carriage motor (CR motor) and make the original position motion of balladeur train 2 with respect to record-header 1.Fig. 6 has shown the relation between the operation corresponding with it of the step pitch number (angle position) of this carriage motor.

Fig. 7 A and 7B are the explanation controlled step that carry out each position during from the initial job to the first of ink jet printer row record according to balladeur train 2.The scrambler of this kind carriage motor (CR motor) equipment is in order to measure the turned position of himself.

Process flow diagram is described below.In step S701, S702 and S703, when turning over 50 step pitches, carriage motor detects the output of scrambler under each step pitch, and this moment, sledge movements was to right-hand (looking from Fig. 6).When balladeur train 2 is in 50 step pitches of starting at from the recording unit right-hand member and so on before the initial job, balladeur train 2 is stop motion because of right-hand member therewith joins, and the carriage motor of this moment is no longer rotation just, and the result can not change the output of scrambler.Under such situation, and carrying out being similar to move the operation under the completed situation of 50 step pitches.Secondly, when step S704 and S705, carriage motor rotates in forward step by step, make balladeur train 2 move to original position sensor 11 left and detect the original position detection with till indicating at 30 o'clock, and when this sign 30 had been detected out, promptly stored as the original position of step S706 this position of this moment.

At step S707 and S708, carriage motor forward ground makes balladeur train 2 move to the ink cassette detecting location by 11 step pitches, detects the state of original position sensor 11 at this.As the sign part 31c that detects ink cassette probe mark 31, that is when sensor 11 is in off-state, do not load onto with regard to decidable ink cassette 27, this operating process will be told an error routine for ink cassette vacancy situation simultaneously.31c does not detect when sign portion, that is when sensor 11 is in on-state, has installed with regard to decidable ink cassette 27, can carry out then continue after step.

At step S709, carriage motor further by 37 steps, makes balladeur train 2 move to original job position along forward rotation.In this position, convertible change gear train is pump gear 22 and has prepared drive path, so, the feeding motor 21(LF motor that enters a new line) promptly rotate pump cams 23 by pump gear 22.When balladeur train 2 remains on this position, be the state of detectable original position sensor 11 at step S710.When detecting the sign part 32c of retracting device original position probe mark 32, that is when sensor 11 is in off-state, make feeding motor 21 once more in step S712, S713 and S714 counter-rotating, to establish sign part (detecting 32c) state when not having.Setting up this state or when step S710 does not detect sign part 32c, feeding motor 21 just in step S714 and S715 according to forward rotation.The position of the retracting device original position probe mark 32 that is detected by sensor 11 is promptly as the original position storage of retracting device.

In step S716-S721, the feeding motor further just changes with respect to the original position of this retracting device, and 2 of balladeur trains remain on this position simultaneously, and carry out a series of recovery operation.Comprising forcing air feed operation, suction operation, absorbing state to keep operation and unloaded suction operation.Afterwards, under step S722-S725, carriage motor is a backward rotation, makes balladeur train 2 turn back to the LF(line feed through 21 step pitches) working position, make the drive path of convertible speed gear row 19 be transformed into middling speed feed gear wheel 20 thus.At this moment, feeding motor 21 is reverse and forward ground rotates, and has eliminated the adverse effect of gear backlash by the side of shifting gears.Then, from the position of carriage motor after 88 step pitch backward rotation, opening entry operation under step S726.

Fig. 8 and 9 is respectively according to the perspective schematic view of the equipment of third embodiment of the invention and the process flow diagram that is used to illustrate its operation.

Fig. 8 and Fig. 4 are similar, with Fig. 4 difference be the width W a that the fixed signal 31 of usefulness is had is surveyed at this moment original position, be not equal to the retracting device original position probe mark 32 and the width W b of ink cassette probe mark 31.In Fig. 8, width W a is less than width W b.In Fig. 4, original position probe mark 30 requires to be in right-hand member.But in this embodiment, 30 of fixed signals can be got the optional position with respect to sign 31 and sign 32.In Fig. 8, this fixed signal then is between two probe marks 31 and 32.

Come now referring to process flow diagram shown in Figure 9, the initial job of the ink jet printer of Fig. 8 is described.

At first, at step S101, balladeur train 2 moves to the right (by direction shown in Figure 8) by one section distance that is not less than L2.Secondly, at step S102, balladeur train 2 motions are to left, simultaneously by original position sensor 11 monitoring, never detect the position of state-transition when detecting state to detect corresponding sign.At step S103, detect this sign, balladeur train and then the position (S104) that from then on detects be to left movement then, roughly is not less than width W a but is no more than the distance of width W b by one section, with the result that detects of sensor 11 for this reason certainly.At step S105, be that Wa or Wb decision making to the width of this sign.If Wb, then the sign that decidable detected is the sign part 31c of ink cassette probe mark 31.Return the operation of step S102 then, make sledge movements to left by step S106.If the width of this sign is Wa, then the sign that decidable detected is that store as original position B in the original position.Continue after, to S111, balladeur train 2 further is moved to the left from step S108, by the distance of one section approximate L2, and carries out the initial job of pump cam.

Figure 10 to 12 shows the bright third embodiment of the present invention.Figure 10 indicates 36 operation with 11 for sectional view is used for illustrating relevant one, then is the perspective schematic view of used sniffer 2 structures in the explanation present embodiment in order to the vacancy Figure 12 that surveys recording chart in the present embodiment.

State when Figure 10 shows no record paper shows state when being mounted with recording chart 6 to Figure 11.When not supplying with recording chart, or a paper vacancy bar 37 is walked around on the edge behind recording chart 6, make 37 not to be obstructed in the figure when pivot 37a inhour is moved towards to rotate, like this, the weight of the sign part 36a that paper vacancy probe mark 36 promptly indicates thus, be docile and obedient hour hands around pivot 36b and move towards to rotate, so paper vacancy bar 37 just raises because of its rotation around pivot 37a.In this state, the sign part 36a of this paper vacancy probe mark 36 just falls outside the slit of original position sensor 11.

As shown in figure 11, as paper feeding to and between friction roller 5 and hold-down roller 39 time along paper disc 38, paper vacancy bar 37 promptly descends because of recording chart 6, because the decline of this bar 37, paper vacancy probe mark 36 just is docile and obedient hour hands around pivot 36b and is moved towards to rotate, so sign part 36a just inserts in the slit of sensor 11.

As shown in figure 12, its width of sign part 36a of having of paper vacancy probe mark 36 is greater than the respective width of other three signs.Therefore, have only when balladeur train to be among the figure in the region D, when the back edge of recording chart 6 is surveyed, paper is sent into, just can carry out this detection, so the position of balladeur train is unrestricted when paper is sent into.

Figure 13 to 15 shows the clear fourth embodiment of the present invention, wherein adopts optical reflective-type sensor to survey various states.

Figure 13 has schematically shown the structure of the sensor that a kind of detection paper of smooth reflection-type is wide.When object 40 to be detected had high index of refraction, the light that is sent by light-emitting component 33 was light receiving element and detects.When this refractive index was low, the light that is sent by light-emitting component 33 just can not arrive light receiving element, thereby does not just have electric current to flow through light receiving element yet.

As shown in figure 14, along the motion path of the wide acquisition sensor 12 of paper and in the recording areas left adjacent area that recording chart 6 is sent into, be provided with an original position and survey the ink cassette that has a brightness b with fixation reflex plate 41 and and survey with reflecting plate 42 with brightness a, the latter can be respectively installing or dismantling down and move up and down according to ink cassette.Above-mentioned two kinds of reflecting plates 41 and 42 are all through coating, make the similar of its white level (high index of refraction) and recording chart 6.In contrast, dash area in the figure promptly on the surface of pressboard 4, for example then makes it to have black (low-refraction).

Figure 15 is the process flow diagram of explanation ink jet printer initialization.At step S161, balladeur train is at first shifted to as shown in the drawing right-hand by one section preset distance, in step S162 balladeur train is shifted to left then, is monitored by the wide acquisition sensor 12 of paper simultaneously, seeks the white level position.Under step S163, detect white level, under steps such as S164, S165 and S166, continue to be moved to the left again,, use range counter (not showing bright) counting simultaneously until detecting black level, after calculating the white level width, judge at step S167 whether this width is a.If this width is not a, the white level that then detects is not that the original position is surveyed with fixation reflex plate 41, thereby operation is turned back to step S162 and balladeur train 2 is continued to left movement.If width is a, then this position is stored as the original position A in step S168.Allow afterwards balladeur train with respect to this original position moved can survey ink cassette once the known number of degrees existence whether.

According to structure and the control mode among above-mentioned first, second, third and fourth embodiment, be used for surveying wirings various in this equipment and only relate to sensor 11 and sensor 12 on the balladeur train.Such wiring can be configured in the printed circuit board (PCB) of record-header on the balladeur train.So the result who detects just can send above-mentioned printed circuit board (PCB) to by the record-header cable in the simple circuit.

In addition, for the detection of original position sensing, ink cassette and the sensing in retracting device original position or the like, all only need to get final product with a kind of simple sensors.

In above-mentioned several embodiment, the condition that this recording unit need be surveyed is the original position of having or not of the existence of ink cassette or vacancy, recording chart and retracting device.But the condition of intend surveying is other also.The condition of for example intend surveying can comprise the existence of type box or not exist and the state that opens or closes of a covering.By increasing the number of probe mark, just can there be a sensor to realize this class detection purpose.

In the various embodiments described above, although sniffer is used for ink jet printer, these embodiment then applicable to the recording unit of other type, get final product so long as realize writing down operation in the sledge movements process.

From the above as can be known, according to the abovementioned embodiments of the present invention, the various conditions of relevant this equipment can be detected simultaneously in that record is cephalomotor, and detectable signal then can transmit by the same circuit of activation record head.

The result has just simplified the maintenance and the assembling of equipment.In addition, can differentiate this condition with the detecting element of minimum number, thereby along with the minimizing of detecting element has also just reduced cost significantly.

Shown in Fig. 1 and 2, sign spare wherein is to be inserted in the detection distance of detecting element or to remove from it, and the insertion of this sign or remove with ink cassette is associated.The equipment that is applicable to this ink cassette is described below.

When ink cassette 27 has been installed in the equipment,, then can when installing, sign 31 make it be displaced to a position that can hinder sliding pine motion if attempt remains on the precalculated position ink cassette with certain tolerance.Shown in Fig. 1 and 2, the leading part that this kind ink cassette is intended two seamed edges in its top to be inserted in the equipment is processed into taper.After this tapering part, then form two stop parts 84.

Be used to be installed in the lid of the ink cassette on top paper guide 7 one sides at one, be provided with two lug bosses 86 in top arris place.These two lug bosses 86 can allow the tapered portion of ink cassette pass through, but push away stop this ink cassette when it and 84 pairs of stop parts close before.Sign 31c is in outside the scope of activities of balladeur train 2, makes motion unlikely being obstructed when ink cassette 27 affacts the 28c of bar portion of this ink cassette of balladeur train.Remove this, above-mentioned involutory position will be selected to sign 31c is not contacted with sensor 11, but must be in the gap that forms in the sensor 11.

Like this, can guarantee ink cassette 27 supply inks, can prevent from simultaneously for example to indicate from the detecting element of an activity 31 motion path insert with the parts of withdrawing from by outside the precalculated position.

The major part of recording unit among Fig. 1 is described referring to Figure 18-23 below.As shown in figure 18, Gu Ding pressboard 4 can make recording chart 6 spray the gap that side maintenance one is scheduled to apart from record-header 1.Friction roller 5 plays a part feeding recordable paper.Hold-down roller 66 and friction roller 5 contact as pressure, are that friction roller 5 drives, and formation one roll gap makes recording chart from failing therebetween between friction roller 5 and hold-down roller 66.Being provided with a hold-down roller supporting member 83 is used for providing pressure required power of when contact for hold-down roller 66.This supporting member is made by corrosion resistant plate and so on material, and its elastic force can be pressed to hold-down roller on the friction roller 5 effectively.

The recording chart of being supplied by friction roller 5 and hold-down roller 66 6 is kept by fixing pressboard 4, and the latter recedes about 30 °, thereby is convenient to watch attentively printing process.6 of recording charts that carried out the record operation on it are an outlet roller 62 and make roller 63 clampings that pressure contacts with it, are transported to a yard * machine 61 then.Equipment among bright Fig. 1 shown in Figure 180 is under such condition, promptly is provided with enclosing cover 64 and autofeed device (ASF).Recording chart can be sent into from the front side by hand, also can supply with by ASF60 from behind.If adopt a kind of pin-feed paper traction engine, also can utilize the paper of continuous type.The rear side of fixing pressboard 4 can be provided with a well heater, at this moment just can adopt to be difficult for dry ink.

Ink supply system, recovery system and sheet transfer system are described below.These a few systems are configured in the left side of recording interval among Fig. 1 with one heart.Just simplify kinematic train thus and saved the space that needs usefulness.In addition, the transmission power source here then can be used for various purposes.Feeding motor 21 is this transmission power sources.The back will illustrate that this feeding motor 21 can also make the recovery system running by a series of recovery operation except driving friction roller 5, outlet roller 62 and ASF60.

Comprise in conjunction with the described retracting device of Fig. 1: 13 carry and to hold part 13A, guide support and cover 13 lid and carry the lid axis of guide 15 that holds part 13A and use, make and build 13 rails that move to record-header ink jet side 1A place, be used for pushing the spring 18 that covers 13 right side initial positions and the pump 24 that is used for drawing ink covers in lid 13, supporting.

In reclaiming operation, make in lid 13 by driving pump 24 after adding a cover and produced vacuum, pump does not show that via one bright pipeline links to each other with lid, makes the ink can be through the nozzle suction of record-header 1.

Contrast Figure 19 and 20 describes the mapping device of feeding motor 21 below.

Indicate a loose pulley with reference number numbers 68 among Figure 19, it passes to the transmission gear 70 that is bearing on the gear shaft 69 slidably with driving force from feeding motor 21.This gear shaft 69 has the transverse section of D type, in mode slidably by a sliding bearing 72 supportings one gear 71 slidably.As shown in figure 20, this sliding bearing 72 has two x-leg 72A of downward extension.Leg 72A engages with a pipe fitting 74, and the latter parallels by a framework 73 supporting or with gear shaft 69, like this, along with leg 72A along the moving of tube-like piece 74, slide gear 71 just moves simultaneously with sliding bearing 72.Carry from lid and to hold part 13A and be extended with an auxiliary 13c who arrives on the tube-like piece 74, a slice spring 13D is arranged at an end upper support of this auxiliary.This sheet spring 13D then is clamped between two x-leg 72A of sliding bearing 72.

To illustrate that as following when left moved, according to direction motion same as described above, 71 of slide gears remained on and cover 13 corresponding positions to balladeur train supporting member 72 by sheet spring 13D owing to engage with balladeur train 2 when lid 13.Modulus can be 19 with slide gear 71 meshed gears, as shown in figure 20, is supported on the top of slide gear 71 by framework 73.

Gear train 19 some the lightest gears are the paper sheet delivery gears 79 that include a gear wheel 80A and a pinion wheel 80B.Gear wheel 80A and slide gear 71 engagements, pinion wheel 80B is then by loose pulley 20 and outlet roller gear 62A engagement.Friction roller 5 and outlet roller 62 can be driven by feeding motor 21 under slide gear 71 and condition that paper output gear 79 is meshed, by feed gear wheel 75 and outlet roller gear 62A, operation to backward rotation.

Referring to Figure 20, ASF output gear 78 has the gear wheel 80A number of teeth and the modulus in opposite directions with optical axis.It can be according to the position of slide gear 71 and slide gear engagement, simultaneously also with the input gear 60A engagement of ASF60.So under slide gear 71 and condition that the output gear 78 of ASF60 is meshed, input gear 60A can be according to rotating forward or backwards.For example paper can be by ASF60 by its rotational conveyance forward or backwards; Can also be engaged in complicated function operation, for example make one's options from first and second storage bins.

Pump output gear 77 is configured in the leftmost side of Figure 20 middle gear row 19, and it is in leftmost position and slide gear 71 engagements (dot-and-dash line among Figure 21 A), and meshing with the transmission gear 31A that is used for pump cam 23 first in those pump output gears 77.So when slide gear 71 moved to such position, feeding motor 21 was a driving pump cam 23 and this cam 23 just impels pump 24 to realize pump-absorb actions.As previously described, certainly be taken at the stop position of balladeur train 2, the driving force of feeding motor can be passed to the output gear 78 and pump output gear 77 of paper output gear 79, ASF selectively by slide gear 71.

Along with the left movement outside of balladeur train 2 towards recording areas, lid carries and to hold part 13A also according to the position motion of balladeur train 2.Along with lid carries the motion of holding part 13A, slide gear 71 promptly meshes with above-mentioned output gear.The operation of this respect is described below.In the conversion operation of output gear, be connected lid and carry the effect that the sheet spring 13D that holds between part 13A and the sliding bearing 72 plays impact damper.

When balladeur train 2 right-hand recording areas from Fig. 1 arrives the position shown in Figure 22 A, and further arrives position shown in Figure 22 B to left movement, at this moment record-header 1 engages with the arm 13B of cover support 13A, year holds part 13a and just can move along the axis of guide 15 now so cover.Among Figure 22 A to 22C of a left side, (A) refer to four such positions to (D), promptly they can covers 13 lid and carry and hold part 13A and sliding bearing 72 and slide gear 71 and occupied by having.(A) to (C) in the position, for example covers 13 and pushes record-header 1 to by the motion arm 13E along the lid 13 of rail 81 guidings.Position D is being engaged in the holding fix before paper sheet delivery between the record operational period.Shown in Figure 22 C, when balladeur train 2 is in position D, slide gear 71 and 79 engagements of paper output gear, but this engagement is not expressed in figure.Under such state, paper can be carried by motor 21.

At position D place, the record-header face at this moment can be according to the electric signal to the record-header electrothermal transducer towards lid, and the preparation type of not being engaged in the record operation sprays.In the present embodiment, it is to carry out when presswork begins that this kind preparation property sprays, and the record operation was then carried out one minute continuously.

When coaster 2 moved to the left of crossing position (D), promptly (D) located to throw off 78 engagements of paper output gear to slide gear 71 in the position.But in this case,, just can not set up normal engagement with ASF output gear 78 if these teeth can not be meshing with each other.But, lid carries and to hold part 13A and at this moment be forced to arrive and corresponding position, position (B), like this, because the move distance difference that the mismatch of tooth causes is just absorbed by flexible sheet spring 13D.And then feeding motor 21 is when driving, and as shown in Figure 3, slide gear 71 promptly drives by transmission gear 70, then just set up correct engagement on tooth cooperates the time, thus can drive ASF output gear 78.

For example be meshed with paper output gear 79 and be right after after paper sends at slide gear 71, the tooth of these two gears meshes very firmly, thereby they are difficult for owing to friction is therebetween thrown off.Promptly be under such situation, this firm engagement also just temporarily is maintained by flexible sheet spring 13D, and then, feeding motor 21 will backward rotation and made the friction-type between these teeth mesh disengagement by force.

Position (A) is a position that is used for reclaiming operation pump purt or similar operation.Figure 22 C has shown this situation.Under such state, slide gear 44 can mesh with pump output gear 32.Shown in Figure 21 A, pump 24 can be by a drive among the pump cam 23 internal tooth wheels 77A.Position (C) is the position that is used for waiting for the record-header 1 that has lid.Even under such condition, paper also can be carried.

Figure 23 has shown the gear teeth of slide gear 71, and the gear in slide gear 71 meshed gears to 19 therewith.The tooth top 82 of these a few teeth has given cavetto, can intermesh smoothly with slide gear 71.

As mentioned above, according in conjunction with the indicated structure of Figure 18 to 23, wherein providing a series of is arranged in parallel and is the gear that a paper sheet delivery transmission power source is driven along the sledge movements direction, and one according to the position of balladeur train outside recording areas must with a selected gear member that is meshed in this batch gear, at this, just can conveyance of sheets when this gear member is therewith on the gearing mesh in the gear row; And when this gear member when in this batch gear another is meshed, can also be engaged in another operation different with the conveyance of sheets operation.So, can be engaged in multiple needed operation selectively with single transmission power source.So just, can reduce cost significantly; The forward of transmission power source and reverse two kinds of rotations all can be adopted, thereby have increased working range.

In addition, by increasing or reduce the number of gears in the gear row, also be easy to increase or reduce the operation number of being engaged in by single transmission power source.If combine, just can add a cover interrelatedly or reclaim operation with the mechanism that drives lid.

Figure 24 and 25 has shown a kind of ink cassette sniffer that compacts.When being provided with when being used for protecting the protective device of probe or probe groups, also owing to need set up and survey that ink cassette exists or non-existent circuit and corresponding switching device, this kind device size will strengthen.Figure 24 A, 24B, 25A and 25B have illustrated the structure that can eliminate this inconvenience, and whole device size is reduced.The structure of this embodiment can be exchanged with the ink cassette detecting structure that adopts the sign among Fig. 1.In this embodiment, around the probe 29 that is used for ink cassette is connected with recording unit, be provided with the plate that can open of making by conductive material.A kind of plate like this can be opened along with the insertion of ink cassette.

After the ink cassette insertion finished, above-mentioned this protective shield had just formed such circuit in ink cassette existence or non-existent detection line unit, and just the current-carrying part that has above-mentioned plate of detectable ink cassette can be confined to switch sections thus.

Figure 24 has clearly illustrated that this kind protector and probe.Ink cassette 27 is got the mounting means under detachable, installs when correct when it, can be the probe 29 that passes through via an ink tubes and record-header and runs through.Be provided with a hinged probe cover plate 91 that can rotate at the one end, and be provided with one therewith probe hold adjacent window 91A slightly.The articulated section of cover plate 91 is provided with the disc spring of a distortion, cover plate 91 is pushed to the end slightly of probe.

Be provided with the card 87 that can be used to lock cover plate 91.When not having ink cassette, can stop the Push And Release of cover plate 91.There are two electrodes 88 and 89 to constitute and are used for surveying a part that has circuit 90 not at the ink cassette at its rear.

When ink cassette when arrow points is inserted, claw 87 just is that a thruster of ink cassette is compeled, and makes the probe lid pine oil of locking.Probe lid 91 can directly be subjected to the compressing of case 27 and freely rotate at this moment, and is backward rotation.Expose the end slightly of this probe simultaneously by window 91.Probe 29 sooner or later will be for ink cassette leads to, and an end of probe lid 91 just contacts with 89 with electrode 88.Probe lid 91 current-carrying parts that had make the detection line short at this moment, make resistance reduce to several milliohms from infinity, the reduction of resistance just can be used as the mensuration that ink cassette exists, circuit 90 can constitute the form of surveying resistance variations or other variation, and changes in resistance then can be from high to low or from low to high.

When ink cassette 27 was withdrawn from, along with the outer of ink cassette removed, probe lid 91 was just pushed the place ahead to for disc spring, just reorientates for claw 87 pinnings then.In this state, the top end of probe can be protected when having foreign matter to insert, and removes this, also can make it to escape injury even operator's hand mistake is inserted.

Figure 25 A and 25B are and the similar skeleton view of said structure, but employing is a collection of ink cassette.Ink cassette 27A has comprised the ink cassette of three kinds of different colours, and the ink cassette 27B that contains a kind of color ink.Correspondingly, the main frame of recording unit is equipped with three probes 29 that are used for ink cassette 27A and the lid of the probe with corresponding three windows 94; With a probe 29 that is used for ink cassette 27B and probe lid 93 with corresponding window.Ink cassette 27A and 27B have disposed claw 87A and the 87B suitable with Figure 24 A claw 87.When a collection of ink cassette 27A and 27B insertion.The probe lid 93 and 94 that can be made of conductive material is formed two electrodes 88 and 89 of the circuit surveying the ink cassette existence or do not exist.When two kinds of ink cassette 27A and 27B insert, there is a common electrode 95 to cover 23 and covers 94 with probe and contact with probe.In this situation, plate 93 and 94 current-carrying part are only to form in the closing of circuit part.

As mentioned above, according to this embodiment, the probe protective shield of only just opening when ink cassette inserts is made by conductor material, thus when having finished the insertion of ink cassette with regard to the detectable existence that goes out it, make the number of switch or like to reduce, thereby also reduced cost.

Owing to reduced required switch or similar existing part, just can save requisite space.

In addition, for because of having air to be dissolved in the ink and/or because the resistance in the ink has had variation, and the problem that causes existing or do not exist the detection operation of ink cassette to make a mistake then can come closed circuit to be solved by the mode of contact.

The present invention is specially adapted to foam jet record-header and the recording unit that Japanese Canon Co., Ltd. is developed.This is owing to can realize highdensity picture elements and high-resolution record.

Best a kind of typical structure operating principle is disclosed in U.S. Patent number 4723129 and 4740796.This principle is applicable to so-called (ondemand) type register system and the continuous type register system of should needing immediately, but it is particularly useful for should needing type immediately, this is because its principle of work is, be added to the electrothermal transducer that is configured on liquid (ink) maintenance or the fluid path to drive signal of major general, be enough to provide a kind of rapid warm raising with drive signal away from the nucleation boiling point, like this, just can form film boiling by the heat energy that electrothermal transducer provided, so just can in liquid (ink), form a foam corresponding to each drive signal at the heating part of record-header.Development by this foam with break, just by injection orifice ejection liquid (ink) and form at least one dropping liquid pearl.This drive signal is preferably got impulse form because the development of foam with break and can instantaneously realize, thereby liquid (ink) can spray with quick response.The drive signal of impulse form is preferably as U.S. Patent number 4463359 and 4345262 disclosed the sort of.Remove this, the temperature rate of rise of hot face is preferably as disclosed in the U.S. Patent number 4313142.

The structure of record-header can be bright shown in U.S. Patent number 4558333 and 445960, and heating part wherein is configured in a sweep.In addition, the unitized construction of injection orifice, fluid passage and electrothermal transducer is then as disclosed in the above-mentioned patent.Again, the present invention also is applicable to disclosed structure in Japan's special permission (disclosing) application number 123670/1984, wherein a public slit is used as the injection orifice of a plurality of electrothermal transducers; The present invention is equally applicable to disclosed structure in Japan's special permission (disclosing) application number 138461/1984, wherein is formed with an aperture that absorbs the heat energy pressure wave corresponding to this spout part.Why can be for this reason, and though be since the present invention can record-header type how can both be reliably and write down operation efficiently.

The present invention can be effectively used to the record-header with the length that is equivalent to the dominant record width of so-called solid line (fall-line) type.This kind record-header can be a record-header, also can by a plurality of record-headers form and cover the position a whole width.

The present invention also is applicable in addition: the serial type record-header, be fixed in record-header on the main frame here; Replaceable chip-shaped record-header, it is electrically connected with main frame and can supplies ink owing among being installed in main frame; Box type record-header, it has all-in-one-piece ink cassette.

They preferably provide retracting device and the servicing unit that is used for the preparation property operation, because can further make effect stability of the present invention.As for this servicing unit, be useful on capping device, cleaning device, pressurization or the suction means of record-header, by ejection-type electrothermal transducer or the preparation property heating arrangement formed of the additional heating element of quasi-converter and as the preparation property injection rather than be used to write down the device of operation thus, this device can make the pen recorder stabilization.

As for can be in the kind of the record-header of installing, it can be the single record hair style corresponding with the solid color ink, also can be a record hair style more than the material of ink in batch with different recording color or density is corresponding.The present invention can be effectively used to so a kind of equipment, and it has is a kind of working method of monochrome at least, and this mainly is a black, and the polychrome of band different colours ink material; Full-color operation mode by the potpourri of shades of colour material is arranged simultaneously, and this equipment can be the recording unit of global formation or the equipment that is combined into by a plurality of record-headers.

In above-described embodiment, said ink material refers to liquid.But it can be a kind of ink material that solidifies in room temperature or when being lower than room temperature, and the ink material that liquefies when room temperature.Because in this ink jet record, ink is controlled in the temperature range that is not less than 30 ℃ and is not higher than 70 ℃, provide stable injection with the viscosity of stablizing ink, in this common class recording unit, used ink is liquid in the said temperature scope when applying tracer signal.In addition, the temperature that causes because of heat energy raises, and is certain to be prevented owing to ink has consumed heat energy from the solid-state this state variation that becomes liquid state, perhaps adopts the ink material that solidifies when lying idle, in order to avoid evaporation of ink.No matter be above that a kind of situation, the heat energy that the application records signal produces can make the ink feed liquidization, and the ink material that has liquefied can spray.This ink can begin to solidify when it arrives on the recording chart.The suitable the sort of ink material that liquefies by heat application that adopts of the present invention.This ink material can be used as liquid material or solid material and remains among the through hole that is formed on a kind of micropore paper or recessed, as disclosed in Japan's special permission (disclosing) application number 56847/1979 and 71260/1985.Such paper with its front towards electrothermal transducer.For above-mentioned ink material the most effective a kind of be the film boiling system.

Above-mentioned ink-jet recording apparatus can be used as the output terminal of following various information treatment facility, for example computing machine or its similar device, the copying equipment that is combined with image reader or its similar device or having information sends with the facsimile recorder of receiving function etc.

Although the present invention is described with reference to structure disclosed herein already, but do not provide constraints for the details that is outlined, the application's purpose then is will summarize the improvement target that might appear at the appended claim book or govern scope interior all remodeling or change.

Claims (7)

1, a kind of ink jet recording device, it comprises:

One is carried on the balladeur train of the record-header of realizing the record operation on the recording medium, and this balladeur train moves on recording medium;

Be used for differentiating several discriminating gears of the multiple condition of the said equipment; It is characterized in that:

One sensor that is used for described discriminating gear is set on above-mentioned balladeur train;

A plurality of parts of being surveyed by the sensor are set in the scanning area of above-mentioned balladeur train;

And

The device of finishing the operation of above-mentioned recording unit according to the output signal of above-mentioned discriminating gear is set.

2, equipment as claimed in claim 1 is characterized in that having at least one to be measured to shift to or leave such motion path, this path corresponding to said at least one wait to visit the parts that are associated.

3, equipment as claimed in claim 1 is characterized in that all detecting elements are reference positions that are used for surveying record-header.

4, equipment as claimed in claim 1 is characterized in that said detecting element is the width that is used for surveying recording medium.

5,, it is characterized in that it also comprises according to the recording unit of claim 1:

A transmission power source is used for coming conveying recording medium along the direction of motion of vertical above-mentioned balladeur train;

Drive and a collection of gear parallel by above-mentioned transmission power source with this sledge movements direction;

Corresponding to the position of above-mentioned balladeur train outside its recording areas, can with a gear member that is meshed through selecting in above-mentioned this batch gear;

Wherein, recording medium is at conveying operations and spray reclaimer operation, the selectable engagement of being undertaken by the sledge position of differentiating according to discriminating gear one of in said gear part and the above-mentioned a collection of gear, and selectively carry out.

6, a kind of recording unit as claimed in claim 1, it is characterized in that the record-header of being addressed sprays a kind of drop that is obtained by the foam that heat energy formed of an electrothermal transducer generation, wherein different with a conveying recording medium operation operations are, temporarily sledge movements is faced the position of a capping device to record-header, simultaneously provide an electric signal to described electrothermal transducer therein, make this record-header this capping device preparation property ground atomizing of liquids.

7, recording unit as claimed in claim 1 is characterized in that, above-mentioned parts can towards or deviate from the motion path of above-mentioned balladeur train and move.

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