EP0418818A2 - Tintenstrahlaufzeichnungsgerät und Temperaturregelungsverfahren hierfür - Google Patents

Tintenstrahlaufzeichnungsgerät und Temperaturregelungsverfahren hierfür Download PDF

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Publication number
EP0418818A2
EP0418818A2 EP90117934A EP90117934A EP0418818A2 EP 0418818 A2 EP0418818 A2 EP 0418818A2 EP 90117934 A EP90117934 A EP 90117934A EP 90117934 A EP90117934 A EP 90117934A EP 0418818 A2 EP0418818 A2 EP 0418818A2
Authority
EP
European Patent Office
Prior art keywords
temperature
recording head
ink
recording
print
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90117934A
Other languages
English (en)
French (fr)
Other versions
EP0418818A3 (en
EP0418818B1 (de
Inventor
Naoji Otsuka
Kentaro Yano
Hitoshi Sugimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2095974A external-priority patent/JPH03293149A/ja
Priority claimed from JP24048190A external-priority patent/JP3039676B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP0418818A2 publication Critical patent/EP0418818A2/de
Publication of EP0418818A3 publication Critical patent/EP0418818A3/en
Application granted granted Critical
Publication of EP0418818B1 publication Critical patent/EP0418818B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04528—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at warming up the head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04553—Control methods or devices therefor, e.g. driver circuits, control circuits detecting ambient temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0458—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04591—Width of the driving signal being adjusted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/195—Ink jet characterised by ink handling for monitoring ink quality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14362—Assembling elements of heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14379—Edge shooter

Definitions

  • a disposable head is an expendable supply, a user frequently attaches or detached it to or from a main body. For this reason, contacts of the main body are always exposed.
  • a temperature measurement circuit Since the output from the temperature sensor is directly supplied to a circuit on a printed circuit board of the main body through a carriage and a flexible wiring, a temperature measurement circuit is very weak against electrostatic noise. Since a compact or portable printer cannot have a sufficient shield effect in its housing, it is further weak against electrostatic noise.
  • an electrostatic shield, and parts as a countermeasure against electrostatic noise must be added at respective portions for only a single temperature sensor, thus considerably disturbing a compact structure, a decrease in cost, and high image quality.
  • an ink-jet recording apparatus for causing a recording head to discharge an ink droplet to perform recording, comprising:
  • an ink-jet recording apparatus for causing a recording head to discharge an ink droplet to perform recording, comprising:
  • Figs. 2 to 6 are views for explaining an ink-jet unit IJU, an ink-jet head IJH, an ink tank IT, an ink-jet cartridge IJC, an ink-jet recording apparatus main body IJRA, and a carriage HC, and the relationship among these components. The arrangement of these portions will be described below with reference to Figs. 2 to 6.
  • the ink-jet cartridge IJC in this embodiment has an increased ink storage ratio, as can be seen from the perspective view of Fig. 3, and has a shape in which the distal end portion of the ink-jet unit IJU slightly projects from the front surface of the ink tank IT.
  • the ink-jet cartridge IJC is fixed and supported by a positioning means and electrical contacts (to be described later) of the carriage HC (Fig. 5) placed on the ink-jet recording apparatus main body IJRA, and is of a disposable type which can be detachable from the carriage HC. Since Figs. 2 to 6 of this embodiment show arrangements to which various inventions which have been made in establishment of the present invention are applied, the overall arrangement will be described below while briefly explaining these arrangements.
  • the ink-jet unit IJU is a bubble-jet type unit for performing recording using an electrothermal conversion element for generating a heat energy for causing film boiling of an ink according to an electrical signal.
  • a heater board 100 is prepared by forming a plurality of electrothermal conversion element arrays (discharge heater), a temperature control heater, and AI electrical wirings for supplying an electric power to these heaters on an Si substrate by a film formation technique.
  • a wiring circuit board 200 is arranged for the heater board 100, and has wirings corresponding to those of the heater board 100 (e.g., these wirings are connected by wire bonding), and pads 201, located at the end portions of these wirings, for receiving electrical signals from the apparatus main body.
  • a grooved top plate 1300 on which partition walls for dividing a plurality of ink paths, a common ink chamber, and the like are arranged, is formed by integrally molding an ink reception port 1500 for receiving an ink supplied from the ink tank and guiding it to the common ink chamber, and an orifice plate 400 having a plurality of discharge ports.
  • an ink reception port 1500 for receiving an ink supplied from the ink tank and guiding it to the common ink chamber
  • an orifice plate 400 having a plurality of discharge ports.
  • polysulfone is preferable, but other molding resin materials may be used.
  • the partial ribs 2301 and 2302 are similarly formed on the inner surface of the lid member 1100 on the corresponding extending lines of the ribs 2300, but are divided unlike the ribs 2300 to increase an air space as compared to the ribs 2300. Note that the partial ribs 2301 and 2302 are dispersed on a surface portion 1/2 or less the entire surface of the lid member 1100. With these ribs, an ink in a corner area farthest from the ink supply port 1200 of the ink absorber can reliably guided toward the supply port 1200 by a capillarity force while being stabilized.
  • the air communication port 1401 is formed in the lid member to cause the interior of the cartridge to communicate with outer air.
  • a waterproof member 1400 is arranged inside the air communication port 1401 to prevent an ink from leaking from the air communication port 1401.
  • An ink storage space of the ink tank IT has a rectangular shape, and its long side corresponds to a side surface. Therefore, the above-mentioned arrangement of the ribs are particularly effective.
  • the ribs are formed on the entire lid member 1100 to stabilize ink supply from the ink absorber 900.
  • a cubic shape is suitable.
  • the ribs 2301 and 2302 on the inner surface of the ink tank IT in this embodiment are arranged at an almost uniform distribution with respect to the direction of thickness of the cubic ink absorber 900.
  • This structure is important since it can uniform an atmospheric pressure distribution with respect to ink consumption of the overall absorber, and can make an ink residue almost zero.
  • the technical idea of the arrangement of the ribs will be described below in more detail.
  • an arc having a long side as a radius is drawn to have a position obtained by projecting the ink supply port 1200 of the ink tank onto the square upper surface of the cube as the center, it is important to arrange the above-mentioned ribs on a surface portion outside the arc so that an atmospheric pressure is given earlier to the absorber portion located outside the arc.
  • the position of the air communication port 1401 of the tank is not limited to that of this embodiment as long as air can be introduced to the rib arrangement region.
  • the ink-jet cartridge IJC has a flat rear surface portion with respect to the head to minimize a necessary space when it is assembled in the apparatus, and to maximize an ink storage amount. Therefore, the cartridge of this embodiment has an excellent structure since the apparatus can be rendered compact, and an exchange frequency of cartridges can be decreased.
  • a projecting portion for the air communication port 1401 is formed by utilizing a rear portion of a space for integrating the ink-jet unit IJU, and the interior of the projecting portion is hollowed to form an atmospheric pressure supply space 1402 for the total thickness of the absorber 900, as described above. With this arrangement, an excellent cartridge which cannot be realized by the conventional technique can be provided.
  • the atmospheric pressure supply space 1402 is considerably larger than a conventional one, and the air communication port 1401 is located above this space. Therefore, even if an ink is released from the absorber due to any abnormality, the atmospheric pressure supply space 1402 can temporarily store the released ink, and can reliably recover it to the absorber. Thus, an efficient cartridge can be provided.
  • Fig. 4 shows an arrangement of the unit IJU mounting surface of the ink tank IT. If a straight line which passes almost the center of a projecting port of the orifice plate 400 and is parallel to the bottom surface of the tank IT or the mounting reference surface for the surface of the carriage is represented by L 1 , the two positioning projections 1012 to be engaged with the holes 312 of the support member 300 are located on the straight line L 1 . The height of each projection 1012 is slightly smaller than the thickness of the support member 300, and this projection positions the support member 300.
  • a pawl 2100 to be engaged with a 90 engaging surface 4002 of a positioning hook 4001 of the carriage is located on the extending line of the straight line L 1 on this drawing, so that a positioning force for the carriage acts on a surface region parallel to the reference surface including the straight line L 1 .
  • these relationships are effective since the positioning precision of only the ink tank is equivalent to that of a discharge port of the head.
  • Projections 1800 and 1801 of the ink tank corresponding to the fixing holes 1900 and 2000 of the support member 300 to the side surface of the ink tank are longer than the above-mentioned projections 1012, and extend through the support member 300.
  • the projecting portions of these projections are thermally fused to fix the support member 300 on the side surface of the ink tank.
  • the electrical connecting portion support plate 4003 has a plurality of reinforcement ribs 4004 not in a direction of the above-mentioned ribs but in a direction perpendicular thereto. A sideward projecting amount is decreased from the platen side toward the hook 4001. This also serves to provide a function of inclining the cartridge mounting position, as shown in Fig. 5.
  • the support plate 4003 has two hook-side projection surfaces 4006 for applying a force to the cartridge in a direction opposite to a direction of a force applied from the two positioning projection surfaces 4010 to the cartridge to form a pad contact region between these two positioning surfaces, and to uniquely define deformation amounts of projections of the rubber pad sheet 4007, which projections correspond to the pads 2011. These positioning surfaces are in contact with the surface of the wiring circuit board 200 when the cartridge IJC is fixed at a recording position.
  • the pads 201 of the wiring circuit board 200 are distributed to be symmetrical about the above-mentioned line Li, the deformation amounts of the projections of the rubber pad sheet 4007 can be uniformed to much stabilize contact pressures of the pads 2011.
  • the pads 201 are distributed in a 2 x 2 matrix.
  • the hook 4001 has an elongated hole to be engaged with a stationary shaft 4009.
  • the hook 4001 is pivoted counterclockwise from the illustrated position by utilizing a moving space of this elongated hole, and thereafter, is moved to the left along the platen roller 5000, thereby positioning the ink-jet cartridge IJC with respect to the carriage HC.
  • the hook 4001 may be moved in any other patterns, but may be preferably moved by, e.g., a lever.
  • the hook 4001 is pivoted, the cartridge IJC is moved toward the platen roller, and the positioning projections 2500 and 2600 are moved to positions where they can be brought into contact with the positioning surfaces 4010 of the front plate.
  • the hook 4001 is moved to the left, the 90.
  • Fig. 6 is a schematic perspective view of the ink-jet recording apparatus main body IJRA on which the above-mentioned cartridge is mounted.
  • the carriage HC which is engaged with a spiral groove 5004 of a lead screw 5005 rotated through driving force transmission gears 5011 and 5009 in cooperation with a forward/reverse rotation of a driving motor 5013 has pins (not shown), and is reciprocally moved in directions of arrows a and b .
  • a sheet pressing plate 5002 presses a sheet against the platen roller 5000 along the carriage moving direction.
  • Photocouplers 5007 and 5008 serve as home position detection means for detecting the presence of a lever 5006 of the carriage HC in a corresponding region to switch, e.g., a rotational direction of the motor 5013.
  • a member 5016 supports a cap member 5022 for capping the front surface of the recording head.
  • a suction means 5015 draws the interior of this cap member by vacuum suction, i.e., performs a suction/recovery operation of the recording head through an opening 5023 in the cap member.
  • a cleaning blade 5017 and a member 5019 for allowing the blade 5017 to be movable in the back-and-forth direction are supported on a main body support plate 5018.
  • a lever 5021 is used to start the suction/recovery operation, and is moved upon movement of a cam 5020 which is engaged with the carriage HC.
  • the lever 5021 is subjected to movement control by a known transmission means such as a clutch for switching a driving force from the driving motor.
  • Tables 1 and 2 show control parameter data tables used when the temperature control operations before and during printing are perform"ad, and these tables are stored in a ROM.
  • "100%" represents supply of a maximum energy
  • "0%” represents supply of no energy.
  • an energy supply amount is controlled according to an energization time (heating pulse width) to the temperature control heater.
  • a maximum energization time is set to be about 6 sec, and in the temperature control during printing, it is set to be about 120 msec.
  • the energy supply amount may be controlled by an energization voltage in place of the energization time, or may be controlled by both the energization time and voltage.
  • the energy supply amount is increased to increase a temperature increase amount, so that the head temperature is closer to the target temperature.
  • the energy supply amount is set to be large to cause the head temperature to approach the target temperature.
  • the energy supply amount is set to be small.
  • the temperature of the recording head can be controlled to the target temperature without using conventional closed-loop control. This temperature control will be described in detail below.
  • Fig. 10 shows a change in actual temperature (T H ) of the recording head with respect to an ambient temperature (T A ) and a target temperature (To) when only the temperature control before printing is performed.
  • Fig. 11 similarly shows a change in temperature of the recording head when only the temperature control during printing is performed, and
  • Fig. 12 shows a change in temperature of the recording head when both the temperature control operations before and during printing are performed.
  • Fig. 13 shows a change in temperature of the recording head caused by printing itself (self temperature increase) when only printing is performed without the temperature control.
  • Fig. 14 shows a change in temperature of the recording head when printing is performed with the temperature control operations before and during printing.
  • the temperature (T H ) of the recording head is switched at positions of 60 sec and 360 sec since the data in the temperature control data table during printing shown in Table 2 (temperature control parameter) is changed.
  • a thermal equilibrated temperature (T E ) shown in Figs. 11 and 12 means a temperature which can be naturally reached by only a temperature control energy on the basis of a heat capacity of the head, and is determined by data shown in Tables 1 and 2.
  • the thermal equilibrated temperature is set to be slightly lower than the target temperature, so that the sum of the thermal equilibrated temperature and a temperature increase (self temperature increase) caused by self heating of the recording head shown in Fig. 13 corresponds to the target temperature.
  • the temperature control according to the first embodiment of the present invention will be described below with reference to the flow chart shown in Fig. 15. Note that a change in temperature of the recording head caused by this temperature control corresponds to Fig. 14.
  • step S101 When the power switch is turned on, a wait time counter and a print time counter are reset to zero to initialize the control parameters in step S101.
  • step S102 the control waits until a print signal is input.
  • step S103 When the print signal is input, an ambient temperature is read from the temperature sensor 8 on the printed circuit board 7 of the main body in step S103.
  • step S104 a wait time of the wait time counter is read. However, the wait time counter is reset to "0" as described above immediately after power-on.
  • step S105 the temperature control data table before printing (Table 1) is referred to on the basis of the ambient also moving amounts of the next and subsequent lines may be taken into consideration.
  • a known means may be used. In place of measuring the print time, the number of print lines or the number of print characters may be counted.
  • a means for measuring an ambient temperature is arranged in a recording apparatus main body such as a printer, and a control software program utilizing heating/cooling thermal characteristics uniquely determined by a heat capacity of the recording head itself is employed, so that the temperature of the recording head can be controlled to a desired temperature.
  • a signal current from the temperature sensor of the recording head need not be detected.
  • a variation in print performance among heads as a major drawback of temperature control posed when the disposable type is employed, can be eliminated.
  • a variation in print performance among heads can be eliminated, and uniform print quality can be obtained.
  • the temperature sensor can be omitted from the cartridge of the recording head as an expendable supply, a temperature sensor selection process, or a temperature sensor adjustment process so far can be omitted to greatly reduce cost.
  • the temperature sensor itself can be omitted, a manufacturing yield can be greatly increased to further reduce cost.
  • a small signal current from the head need not be detected, and a countermeasure against exposure of contacts upon attachment/detachment of the disposable cartridge from the recording apparatus main body, and an electrostatic countermeasure for patterns of a flexible wiring and a printed circuit board between the recording apparatus main body and the recording head can be simplified.
  • sufficient temperature control attained by developing open-loop control of the first embodiment can be performed even in a recording method such as a bubble-jet method in which heat generation or radiation occurs upon printing.
  • an energy level to be applied to the recording head for attaining a temperature increase is determined with reference to control data tables on the basis of an ambient temperature and a print time and a non-print time of the recording head before the present print operation is started, so that temperature control can be realized by open-loop control by using only an adjusted temperature sensor of a main body.
  • a temperature can be sufficiently anticipated by open-loop temperature control on the basis of data anticipated by the main body according to operation control parameters such as a print time and a non-print time which can be easily measured by the printer like in the first embodiment, and a temperature control energy supply amount can be adjusted.
  • a thermal equilibrated temperature may be set to be lower than that of a character printer under an assumption of a high average print rate.
  • a temperature increase energy excessively larger than that required for the next print control before printing (without correction) is performed is the same as that shown in Fig. 10, and is omitted.
  • Fig. 18 similarly shows a change in temperature of the recording head when both the temperature control operations before and during printing (without correction) are performed.
  • Fig. 19A shows a change in print rate
  • Fig. 19B shows a change in temperature of the recording head in correspondence with a change in print rate shown in Fig. 19A when the temperature control operations before and during printing according to the second embodiment of the present invention are performed
  • Fig. 19C shows a change in operation amount of a temperature control energy.
  • a thermal equilibrated temperature shown in Figs. 17 and 18 is set to be higher than those shown in Figs. 11 and 12.
  • the first embodiment takes self heating of the recording head into consideration when the thermal equilibrated temperature is set. In this embodiment, however, since a self heating portion is corrected in the temperature control during printing, the self heating portion need not be taken into consideration when the thermal equilibrated temperature is set.
  • an energy supply amount of the temperature control during printing according to this embodiment is slightly larger than that in the first embodiment.
  • Temperature control according to the second embodiment of the present invention will be described below with reference to the flow chart shown in Fig. 20. Note that a change in temperature of the recording head by this temperature control corresponds to Fig. 19.
  • a wait time counter, a print time counter, a print pulse counter, a correction coefficient memory, and the like are reset to "0" (step S201) to initialize control parameters.
  • the control then waits until a print signal is input (step S202).
  • an ambient temperature T obtained by the temperature sensor 8 on the printed circuit board 7 of the main body is read (step S203).
  • An anticipated temperature T FINI upon completion of the previous print operation (to be described in detail later) is then read (step S204).
  • a wait time tw is then read from the wait time counter. At this time, the counter is reset to "0" as described above.
  • the temperature control data tables before and during printing (Tables 3 and 4) are referred to on the basis of the wait time tw and the ambient temperature (step S205).
  • a temperature control operation amount Pp re before printing P preo x f(T FINI ) is calculated (step S207).
  • the function f has a negative correlation with the anticipated temperature T FINI upon completion of the previous print operation.
  • the temperature control heater 10 shown in Fig. 7 is heated on the basis of the calculated operation amount Pp re , and the temperatures of the nozzle portion 9 and the common ink chamber 12 of the recording head 2 are increased (step S208).
  • an energization time is prolonged as a temperature becomes lower.
  • a print start timing is waited for about 1 sec to disperse an abrupt temperature distribution formed in the recording head. At that time, the wait time counter is reset (step S209), and the print time counter is started (step S210).
  • Temperature control conditions of the initial operation amount P LINEO during printing obtained in step S206 are then corrected according to the content of the print signal.
  • the temperature control conditions are corrected according to the length of one sub-scanning line.
  • a power correction coefficient L for multiplying a correction coefficient proportional to a ratio of an actual moving amount to the full width of the carriage is calculated (step S211).
  • Discharge pulses for one second (number of print dots) of the next print content to be printed are counted to calculate an average print rate (print duty) (step S212).
  • Power correction coefficients P, and P 2 are calculated on the basis of the average print rate for every second (step S213).
  • the power correction coefficient P 1 is a low-response correction coefficient, and is based on an average of average print rates for every seconds during previous 100 seconds.
  • the power correction coefficient P 2 is a high-response correction coefficient, and is based on an average of average print rates for every seconds during previous 10 seconds.
  • a temperature control operation amount P uNE during printing is calculated on the basis of the obtained data.
  • P LINE P LINEO X P 1 x P 2 x L (step S214).
  • P LINEO represents the temperature control initial operation amount during printing
  • the correction coefficient L is one based on the carriage moving amount.
  • the correction coefficient is normalized to a range between 0 to 1 (0% to 100%).
  • high-precision temperature control can be performed even when a position of a recording head is physically separated from a position of a temperature sensor for measuring an ambient temperature.
  • the temperature sensor for measuring an ambient temperature is arranged not on a recording head unit but on an apparatus main body on which the recording head unit is mounted, and an anticipated control method is adopted wherein a temperature of the recording head is anticipated on the basis of a thermal time constant determined based on a heat capacity of the recording head, a print time, and a non-print time to control a temperature control amount.
  • the recording head since the recording head does not have a temperature sensor, cost of the recording head as an expendable supply can be greatly reduced, and this can provide a considerably large merit in, especially, a disposable cartridge in which the recording head and an ink tank are integrated.
  • a temperature detected by the temperature sensor cannot often indicate a correct temperature at the position of the recording head.
  • a temperature in the machine is increased due to heat generated by the power supply circuit. In this case, an increase in temperature in the machine varies depending on positions in the machine.
  • a temperature control parameter for anticipated control is often determined on the basis of the temperature data including an error. Even if the identical apparatus and the identical recording head are used, a print density of prints may often be varied.
  • a temperature control parameter determined by parameters such as an ambient temperature, a print time, a non-print time, and the like is corrected according to an energization time of the apparatus main body or components in the machine which generate heat, so that a local difference in temperature increase in the machine, or an error in an anticipated temperature of the recording head caused by a time difference due to a difference in thermal time constant are corrected, thus attaining precise temperature control.
  • Fig. 22 shows a temperature increase in the machine near the temperature sensor for measuring an ambient temperature, and an actual temperature of the recording head at that time.
  • Fig. 22 exemplifies data when a heat generation portion is separated from the recording head unit, and the recording head unit does not suffer from a temperature increase in the machine.
  • Fig. 23 shows an ambient temperature near the temperature sensor for measuring the ambient temperature, and an actual temperature of the recording heat at that time.
  • Fig. 23 exemplifies data when the recording head unit suffers from a temperature increase in the machine.
  • Table 6 shows a correction table of a temperature increase in the machine in correspondence with Fig. 22. Note that above Tables 3 and 2 are used as temperature control data tables before and during printing.
  • a small temperature keeping current may be supplied to the recording head unit during an ON period of a power supply, so that the recording head unit can have substantially the same temperature increase as that of the ambient temperature sensor unit.
  • a current which is determined in correspondence with a thermal time constant of temperature increase characteristics of the recording head depending on a time from power-on regardless of a software program is supplied to the recording head. This control is equivalent to temperature correction in correspondence with a power-ON time.
  • heat generation according to a power-ON time is taken into consideration. Furthermore, heat generation according to an energization time of a discharge control driver such as a transistor or IC for printing may be taken into consideration.
  • a read value of a temperature detected by the sensor unit is corrected on the basis of a sum of correction data for a temperature increase in the machine according to an energization time of the power supply unit and correction data for a temperature increase in the machine according to an energization time of, e.g., a transistor for printing. According to this arrangement, correction can be more reliably performed.
  • a main power supply unit is energized to initialize a control unit, and the like, and an actual print operation is performed after a power switch (software power switch) is turned on to energize the respective units of the main body.
  • an energization time of the main power supply unit is referred to as a hardware power-on time and an energization time in which the respective units are energized by actually turning on the software power switch is referred to as a software power-on time
  • a hardware power-on time an energization time in which the respective units are energized by actually turning on the software power switch
  • a software power-on time if these times cause different heat generation amounts, the hardware and software power-on times are independently measured, and a sum of correction values from the corresponding correction tables may be subtracted according to their lapses of time.
  • Fig. 26 is a view for explaining a temperature increase in the printer, and its correction operation.
  • Tables 7 and 8 show temperature correction tables according to hardware and software power-on times. As can be seen from Fig. 26, correction temperatures shown in Tables 7 and 8 are set in correspondence with a temperature increase in the machine ( T of the sensor temperature), and temperature increase correction can be precisely performed. The software and hardware power on times are measured up to a maximum of 60 minutes, and when they exceed 60 minutes, values at 60 minutes are held.
  • correction according to energization times of the transistors and motors may be performed in addition to the above-mentioned temperature increase correction.
  • a temperature may be subtracted on the basis of the software power-ON time or a print time.
  • pulse interval correction table is referred to on the basis of the measured pulse interval, thereby obtaining a correction coefficient.
  • a temperature control operation amount during printing is corrected on the basis of the obtained correction coefficient.
  • step S401 when it is determined in step S401 that the temperature control pulse is not output, it is determined in step S404 whether 1.2 seconds have passed after the previous output. If NO in step S404, the flow returns to step S401. In a normal printing operation, since the temperature control pulse has a maximum of 1.2-second interval, the flow returns to step S401.
  • step S405. It is determined in step S405 whether a capping state is set. If YES in step S405, no operation is performed, and the flow is ended. However, if YES in step S405, capping (Fig. 28) is performed in this embodiment when six seconds have passed upon completion of printing although capping is performed by a known means. In this case, the six seconds have passed to prevent a decrease in throughput occurring when capping is performed upon completion of printing because capping and uncapping require much time.
  • step S405 a temperature control pulse H is automatically output in step S406 to maintain the head temperature to the same temperature as in a carriage stop state. Since capping is performed when six seconds have passed upon completion of printing, a maximum of five temperature control pulses H are output. The flow then advances to steps S402.
  • the same correction as in carriage moving amount correction is performed by measuring the temperature control pulse interval. Since the temperature control pulses H are kept output to maintain the head temperature constant until capping is performed even upon completion of printing, temperature control having higher precision than that in a printing restart mode can be performed.
  • This embodiment exemplifies an operation for protecting the recording head from an over heat state although the recording head itself generates heat.
  • the over heat which tends to occur at a high print rate is prevented by correcting a temperature control power in accordance with a print rate.
  • a temperature control power for example, when a print rate is 50% or more, as shown in Table 5, the correction coefficient is set to be 0%, and temperature control is not performed.
  • the self temperature increase in the recording head is anticipated on the basis of a print rate.
  • an over heat state is determined by the anticipated temperature increase and an ambient temperature, printing in both directions is changed to printing in one direction, thereby preventing over heat.
  • the protect value is reset to "0" in step S602.
  • the temperature of the recording head is assumed to be decreased near the ambient temperature, thereby releasing the protect mode.
  • step S603 the number of printing dots for 15 seconds is counted.
  • step S604 an average low-response print duty for past 120 seconds (8 times) is calculated of the number of printing dots counted in step S603.
  • step S605 the sum data table (Table 10) is referred to on the basis of the low-response print duty to obtain a sum. This sum is compared with the MAX value and if the protect value does not exceed the MAX value, the sum is added to the protect value (steps S606 and S607).
  • step S608 when the low-response print duty is smaller than the previous low-response print duty obtained in step S604, discharge is taken into consideration. That is, in step S609, the difference data table (Table 11) is referred to on the basis of the protect value to obtain a difference. In step S610, the difference is subtracted from the protect value. In this case, when the protect value is smaller than zero, it is set to be zero (steps S611 and S612).
  • a limit value is obtained with reference to the limit data table on the basis of the ambient temperature (step S613). If the protect value does not exceed this limit value, printing in both directions is set (steps S614 and S615). Therefore, this state is canceled in printing in one direction (to be described later).
  • step S616 printing in one direction is set. In this state, the print duty is set to 1/2 that in printing in both directions, over heat can be prevented. Furthermore, when the ambient temperature exceeds 30 C, the wait time is set so that a period of 1.2 seconds is inserted before printing (steps S617 and S618). The print duty is decreased to 1/3 that in printing in both directions. Even if the ambient temperature is high, the temperature of the recording head can be quickly decreased.
  • the increase in temperature of the recording head is anticipated on the basis of the print rate, and over heat of the recording head is detected.
  • over heat of the recording head is determined, printing is changed from printing in both directions to printing in one direction to reduce a print speed.
  • An energy applied to the recording head in unit time can be reduced to prevent over heat.
  • the equilibrated temperature corresponding to the print rate and a discharge amount caused by a decrease in print rate is taken into consideration, thereby anticipating a temperature increase in the recording head. Therefore, high-precision protection against a temperature increase can be achieved.
  • over heat of the recording head is protected by changing the mode from printing in both directions to printing in one direction.
  • any method may be employed if an energy applied to the recording head in unit time can be reduced.
  • a predetermined wait time may be provided prior to printing of the next line, and the pulse width of the discharge heater may be shortened.
  • print time data, wait time data, the energization time data, and the like are preferably stored or timer operations are preferably continued during the power-off state due to the following reason.
  • data is lost upon a power-off operation, the previous temperature of the recording head is unknown when the power switch is turned on again. As a result, proper temperature control cannot be performed.
  • Fig. 34 is a perspective view illustrating an ink-jet recording apparatus which can suitably employ a temperature control method of the present invention.
  • the ink-jet recording apparatus is of a serial scan type in which a head cartridge integrally including a recording head and an ink tank is mounted on a carriage moved along a recording medium P such as a paper sheet or a plastic thin sheet.
  • This ink-jet recording apparatus includes an ink tank 1 and a recording head 2.
  • the recording head 2 is an ink-jet recording head which discharges an ink by utilizing heat energy.
  • the recording head 2 comprises an electrothermal conversion element array.
  • the ink-jet recording head 2 discharges an ink from a discharge port upon growth of bubbles by film boiling generated by heat energy applied by the electrothermal conversion element, thereby recording information.
  • the ink tank 1 and the recording head 2 are integrally arranged to constitute a disposable (exchangeable) head cartridge as a whole.
  • the head cartridge is mounted on a carriage 3, and the carriage 3 is reciprocated in directions indicated by a double-headed arrow A along guide rails 4 so as to move along the recording medium P.
  • power transistors are selected so that each of the heat capacities of the discharge heater drive power transistor 18a and the temperature control driving power transistor 18b is set to be 1/2 the heat capacity of the recording head 2.
  • a heat sink is coupled to each power transistor to set so that a temperature increase in each power transistor 18a or 18b is doubled from the temperature increase in the recording head 2.
  • the temperatures of the power transistors 18a and 18b are measured by temperature sensors 8, and temperature signals from the sensors 8 are converted into digital signals by A/D converters 16.
  • the digital signals are multiplied with each other in the MPU 17, and the product is additionally multiplied with a correction coefficient, thereby uniquely determining the temperature of the recording head from the temperatures of the power transistors 18a and 18b.
  • An ambient temperature (room temperature) sensor may be arranged and combined with the two temperature sensors 8 attached to the power transistors 18a and 18b, thereby correcting the measuring temperatures.
  • the temperature control heater 10 When the measured temperatures of the two power transistors 18a and 18b are lower than a predetermined temperature, the temperature control heater 10 is turned on, and a short pulse which does not cause formation of bubbles of the ink is applied to it, thereby heating the recording head 2.
  • At least one of the temperature control heater 10 is turned off, and supply of a short pulse to the discharge heater 13 is stopped is performed to prevent over heat of the recording head 2.
  • Figs. 41 A and 41 B are partial sectional views of printed circuit boards 7 for performing temperature control according to the eighth embodiment of the present invention.
  • a discharge heater driving power transistor 18a and a temperature control heater driving power transistor 18b are in contact with one temperature sensor 9.
  • a discharge heater driving power transistor 18a and a temperature control heater driving power transistor 18b are in contact with a heat sink 28.
  • a temperature sensor 8 is thermally coupled to the heat sink 28.
  • the temperature control method of this embodiment can be practiced using the same arrangement as the control system shown in Fig. 40.
  • a total heat capacity of the two power transistors 18a and 18b is set to be equal to that of the recording head 2, or an analog signal from the temperature sensor 8 is converted into a digital signal by an A/D converter, and the digital signal is subjected to correction processing in an MPU 17. Therefore, the temperature of the recording head 2 can be uniquely determined from the temperatures measured by the temperature sensor 8. When the measured temperature is the predetermined temperature or less, at least one of the temperature control heater 10 and the discharge heater 13 is used to heat the recording head 2. When the measured temperature exceeds the predetermined temperature, heating of the recording head by at least one of the temperature control heater 10 and the discharge heater 13 is stopped, thereby performing temperature control of the recording head 2.
  • a total heat capacity of the two power transistors 18a and 18b and the heat sink 28 is selected to be equal to that of the recording head 2.
  • the analog signals from the temperature sensor 8 are converted into digital signals by the A/D converters 16, and the digital signals are subjected to correction processing in the MPU 17. Therefore, the temperature of the recording head 2 is uniquely determined in accordance with the temperatures measured by the temperature sensor 8.
  • the recording head 2 is heated by at least one of the temperature control heater 10 and the discharge heater 13.
  • heating of the recording head 2 by at least one of the temperature control heater 10 and the discharge heater 13 is stopped, thereby controlling the temperature of the recording head 2.
  • Fig. 42 is a partial sectional view of a printed circuit board for performing temperature control according to the ninth embodiment of the present invention.
  • Fig. 43 is a block diagram of a control system suitably performing the temperature control of this embodiment.
  • a temperature sensor 8 is located near a discharge heater driving power transistor 18a.
  • the temperature sensor 8 in order to cause the temperature sensor 8 to effectively sense radiation heat or convection heat from the discharge heater driving power transistor 18a, the temperature sensor 8 is preferably located at a level higher than a heating source of the discharge heater driving power transistor 18a since heat is accumulated in the upper portion.
  • a recording head capping means a recording head cleaning means, a recording head pressing means, a recording head suction means, an electrothermal conversion element, another heating element, a combination of the electrothermal conversion element and this heating element, and an arrangement for setting a preliminary discharge mode for discharging independently of recording so as to perform stable recording.
  • a recording mode of the recording apparatus is not limited to a recording mode for only a major color such as black.
  • An integral full-color recording head or a plurality of single-color recording heads may be used.
  • the present invention is also effective to an apparatus having at least one of a plurality of different colors or a color mixing full-color mode.
  • a liquid ink is used.
  • an ink which is solidified at room temperature or less an ink which is softened or melted even at room temperature, or the like may be used.
  • an ink which is solidified or melted in the general temperature control range of 30 C to 70 C may be used in ink-jet printing. That is, any ink may be used when it is melted when a print signal is applied to the recording head.
  • a temperature increase by a heat energy may be positively prevented by using a phase transition from the solid phase to the liquid phase, or an ink which is solidified in an exposed state to aim at prevention of evaporation of the ink may be used.
  • an ink which is melted upon reception of the print signal of the heat energy may be used. In this case, the melted ink is discharged.
  • an ink which is solidified at the time of its arrival on the recording medium, or an ink which is melted upon reception of heat energy may be applied to the present invention.
  • an ink may oppose the corresponding electrothermal conversion element while the ink is held in a recess portion of a porous sheet or held as a liquid or solid body in a through hole. According to the present invention, a film boiling scheme is most effective for these inks.
  • the apparatus may be used as an image output terminal for a data processing unit such as a computer, a copying machine as a combination with a reader or the like, and a facsimile apparatus having a transmission/reception function.
  • a data processing unit such as a computer, a copying machine as a combination with a reader or the like, and a facsimile apparatus having a transmission/reception function.
  • correction associated with the temperature of the control circuit area is performed for a control object member (the ink-jet recording apparatus recording means in each embodiment) to eliminate a control error as in a technique for detecting the state of the recording means while a direct temperature measurement is performed. Since detection or anticipation precision is better than temperature control by the conventional temperature sensor and the detection error range of the temperature sensor itself, execution modes based on various temperatures can be accurately performed.
  • the present invention is applicable to heating elements driven individually or in units of predetermined groups, such as a thermal head for applying a heat energy to an ink ribbon or a porous ink convey unit.
  • any temperature sensor need not be arranged directly on or near the heating element. Disconnections of the sensor and sensor wiring lines can be eliminated, and the measurement is free from sensor variations.
  • each heating portion is locally heated to slightly change the response of the temperature sensor, thereby disabling accurate determination. The present invention can solve this.
  • the present invention provides unprecedented effects in a control object member (e.g., an ink-jet recording head using an ink (solid or liquid)) having various thermal parameters such as an ink heat capacity, a head structure, and heating of the above member. These parameters cause variations in position for accurately determining the temperature due to a use or drive state. Therefore, it is difficult to determine a timing at which accurate determination is performed.
  • the present invention can solve this drawback.
  • the film temperature locally exceeds 300 ° C due to heat-insulating expansion of bubbles. Even if the parameters having large variations are included, or a local heating portion such as a driving switching diode is included, variation factors can be systematically determined to perform temperature control, thus proving superiority of the present invention over the prior arts.
  • an operation error of the temperature detection sensor occurs due to a scanning speed and a difference between speeds during scanning and the stop state.
  • the present invention can solve this problem.
  • the basis of the energization time controls the energy supplied to said heat means during the recording operation on the basis of the corrected ambient temperature and the record time, and controls the energy supplied to said heat means prior to the recording operation on the basis of the corrected ambient temperature and the non-record time.
  • said recording head comprises a plurality of discharge ports for discharging an ink, and heat energy generation means, arranged in units of discharge ports, for causing a state change in ink by heat, discharging the ink from said discharge port on the basis of the state change, and forming a flying droplet.
  • said recording head is of a full-line type having a plurality of discharge ports extending in an entire recording width of a recording medium.
  • control means controls the supply energy on the basis of a pulse width of a drive pulse supplied to said heat means.
  • thermo increase protection means limits supply of the recording energy by changing recording in both directions to recording in one direction.
  • An ink-jet recording apparatus for discharging an ink droplet from a recording head to perform recording, comprising:
  • control means controls the supply energy on the basis of a pulse width of a drive pulse supplied to said heat means.
  • An ink-jet recording apparatus for discharging an ink droplet from a recording head to perform recording, comprising: heat means for heating said recording head; an electronic element for supplying an energy to said recording head; temperature measurement means for measuring a temperature of said electronic element; and control means for anticipating a temperature of said recording head on the basis of a temperature of said electronic element measured by said temperature measurement means.
  • control means controls the energy supplied to said heat means on the basis of the anticipated temperature of said recording head.
  • said recording head comprises a plurality of discharge ports for discharging an ink, and heat energy generation means, arranged in units of discharge ports, for causing a state change in ink by heat, discharging the ink from said discharge port on the basis of the state change, and forming a flying droplet.
  • An apparatus wherein said recording head is of a full-line type having a plurality of discharge ports extending in an entire recording width of a recording medium.
  • An apparatus according to claim 50 wherein said apparatus is applied to a facsimile apparatus for recording a recording signal received through a communication line.
  • control means controls the supply energy on the basis of a pulse width of a drive pulse supplied to said heat means.
  • a method of controlling a temperature of an ink-jet recording apparatus having a recording head for discharging an ink droplet, heat means for heating said recording head, temperature measurement means for measuring an ambient temperature, and timer means for measuring a non-record time of said recording head, comprising: the first step of, just before a recording operation, supplying an energy to said heat means to control a temperature of said recording head on the basis of the ambient temperature measured by said temperature measurement means and the non-record time measured by said timer means; and the second step of supplying a recording signal to laid recording head to perform recording.
  • a method according to claim 60, wherein the first step comprises increasing the energy supplied to said heat means when the non-record time is long.
  • a method of controlling a temperature of an ink-jet recording apparatus having a recording head for discharging an ink droplet, heat means for heating said recording head, temperature measurement means for measuring an ambient temperature, and timer means for measuring a record time of said recording head, comprising: the first step of, during a recording operation, supplying an energy to said heat means to control a temperature of said recording head on the basis of the ambient temperature measured by said temperature measurement means and the record time measured by said timer means; and the second step of supplying a recording signal to said recording head to perform recording.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Recording Measured Values (AREA)
EP90117934A 1989-09-18 1990-09-18 Tintenstrahlaufzeichnungsgerät und Temperaturregelungsverfahren hierfür Expired - Lifetime EP0418818B1 (de)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP241058/89 1989-09-18
JP24105889 1989-09-18
JP94091/90 1990-04-11
JP95974/90 1990-04-11
JP9409190 1990-04-11
JP2095974A JPH03293149A (ja) 1990-04-11 1990-04-11 インクジェット記録装置の温度制御方法
JP20890890 1990-08-06
JP208908/90 1990-08-06
JP24048190A JP3039676B2 (ja) 1989-09-18 1990-09-11 インクジェット記録装置及びその温度制御方法
JP240481/90 1990-09-11

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EP0418818A2 true EP0418818A2 (de) 1991-03-27
EP0418818A3 EP0418818A3 (en) 1991-05-29
EP0418818B1 EP0418818B1 (de) 1998-04-15

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AT (1) ATE165048T1 (de)
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EP0526223A2 (de) * 1991-08-01 1993-02-03 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät
EP0605207A1 (de) * 1992-12-28 1994-07-06 Canon Kabushiki Kaisha Aufzeichnungsgerät und Aufzeichnungsverfahren
US5559535A (en) * 1991-03-20 1996-09-24 Canon Kabushiki Kaisha Temperature control of ink-jet recording head using heat energy
EP0795405A2 (de) * 1996-03-14 1997-09-17 Fuji Xerox Co., Ltd. Aufzeichnungsvorrichtung und Aufzeichnungssteuerungsverfahren
EP0876917A2 (de) * 1997-05-07 1998-11-11 Canon Kabushiki Kaisha Verfahren zur Steuerung eines Tintenstrahlaufzeichnungsgerätes und Tintenstrahlaufzeichnungsgerät

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US8733876B2 (en) * 2011-11-29 2014-05-27 Canon Kabushiki Kaisha Printing apparatus
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CN104309335A (zh) * 2014-10-23 2015-01-28 福建联迪商用设备有限公司 一种热敏打印机的打印控制方法及装置
DE102016100525B4 (de) 2016-01-14 2024-05-08 Jdm Innovation Gmbh Elektronisches Kassensystem und Betriebsverfahren hierfür
CN108357146A (zh) * 2017-12-28 2018-08-03 吉特利环保科技（厦门）有限公司 免切边纸质餐盒生产设备
CN108248233B (zh) * 2018-02-01 2023-10-24 梵利特智能科技（苏州）有限公司 一种高精度卡片冲压印字装置
CN109703195B (zh) * 2018-03-13 2020-04-21 广东聚华印刷显示技术有限公司 喷墨打印头墨水滴定校正的控制方法和装置
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US5559535A (en) * 1991-03-20 1996-09-24 Canon Kabushiki Kaisha Temperature control of ink-jet recording head using heat energy
US5946007A (en) * 1991-03-20 1999-08-31 Canon Kabushiki Kaisha Temperature control of ink-jet recording head using heat energy
EP0505154A3 (en) * 1991-03-20 1993-03-24 Canon Kabushiki Kaisha Thermal ink jet recording head temperature control
EP0505154A2 (de) * 1991-03-20 1992-09-23 Canon Kabushiki Kaisha Temperatursteuerung für thermischen Tintenstrahlaufzeichnungskopf
US5751304A (en) * 1991-08-01 1998-05-12 Canon Kabushiki Kaisha Ink jet recording having temperature control function
EP0838334A3 (de) * 1991-08-01 1998-07-01 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät mit temperaturüberwachung
US6193344B1 (en) 1991-08-01 2001-02-27 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function
US5745132A (en) * 1991-08-01 1998-04-28 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function
EP0838332A2 (de) * 1991-08-01 1998-04-29 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät mit temperaturüberwachung
EP0838333A2 (de) * 1991-08-01 1998-04-29 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät mit temperaturüberwachung
EP0526223A3 (en) * 1991-08-01 1993-06-23 Canon Kabushiki Kaisha Ink jet recording apparatus
EP0838332A3 (de) * 1991-08-01 1998-07-01 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät mit temperaturüberwachung
EP0838333A3 (de) * 1991-08-01 1998-07-01 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät mit temperaturüberwachung
US6139125A (en) * 1991-08-01 2000-10-31 Canon Kabushiki Kaisha Ink jet recording apparatus having temperature control function
US6116709A (en) * 1991-08-01 2000-09-12 Canon Kabushiki Kaisha Ink jet recording apparatus with temperature calculation based on prestored temperature data
EP0526223A2 (de) * 1991-08-01 1993-02-03 Canon Kabushiki Kaisha Farbstrahlaufzeichnungsgerät
US6109718A (en) * 1992-12-28 2000-08-29 Canon Kabushiki Kaisha Recording apparatus for controlling a driving signal in accordance with the temperature in the apparatus and method for controlling the driving signal
EP0605207A1 (de) * 1992-12-28 1994-07-06 Canon Kabushiki Kaisha Aufzeichnungsgerät und Aufzeichnungsverfahren
EP0795405A3 (de) * 1996-03-14 1998-08-05 Fuji Xerox Co., Ltd. Aufzeichnungsvorrichtung und Aufzeichnungssteuerungsverfahren
EP0795405A2 (de) * 1996-03-14 1997-09-17 Fuji Xerox Co., Ltd. Aufzeichnungsvorrichtung und Aufzeichnungssteuerungsverfahren
EP0876917A2 (de) * 1997-05-07 1998-11-11 Canon Kabushiki Kaisha Verfahren zur Steuerung eines Tintenstrahlaufzeichnungsgerätes und Tintenstrahlaufzeichnungsgerät
EP0876917A3 (de) * 1997-05-07 2000-03-08 Canon Kabushiki Kaisha Verfahren zur Steuerung eines Tintenstrahlaufzeichnungsgerätes und Tintenstrahlaufzeichnungsgerät

Also Published As

Publication number Publication date
DE69032238T2 (de) 1998-10-15
SG44735A1 (en) 1997-12-19
CN1064598C (zh) 2001-04-18
CA2025506C (en) 1995-02-28
CN1359798A (zh) 2002-07-24
EP0418818A3 (en) 1991-05-29
SG84552A1 (en) 2001-11-20
ATE165048T1 (de) 1998-05-15
CN1051884A (zh) 1991-06-05
DE69032238D1 (de) 1998-05-20
CA2025506A1 (en) 1991-03-19
EP0418818B1 (de) 1998-04-15
AU635770B2 (en) 1993-04-01
CN1191931C (zh) 2005-03-09
AU6263590A (en) 1991-05-02

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