EP1176016A2 - Dispositif et méthode d'adaptation automatisée des cycles de chauffage des têtes d'impression jet d'encre - Google Patents

Dispositif et méthode d'adaptation automatisée des cycles de chauffage des têtes d'impression jet d'encre Download PDF

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Publication number
EP1176016A2
EP1176016A2 EP01250258A EP01250258A EP1176016A2 EP 1176016 A2 EP1176016 A2 EP 1176016A2 EP 01250258 A EP01250258 A EP 01250258A EP 01250258 A EP01250258 A EP 01250258A EP 1176016 A2 EP1176016 A2 EP 1176016A2
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EP
European Patent Office
Prior art keywords
data
warm
user
memory
control unit
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
EP01250258A
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German (de)
English (en)
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EP1176016A3 (fr
EP1176016B1 (fr
Inventor
Ulrich Hetzer
Jan Dr. Keunecke
Torsten Schlaaff
Gerorge G. Gelfer
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Francotyp Postalia GmbH
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Francotyp Postalia GmbH
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Filing date
Publication date
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Publication of EP1176016A2 publication Critical patent/EP1176016A2/fr
Publication of EP1176016A3 publication Critical patent/EP1176016A3/fr
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Publication of EP1176016B1 publication Critical patent/EP1176016B1/fr
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
    • B41J2/04536—Control methods or devices therefor, e.g. driver circuits, control circuits using history data
    • 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
    • B41J2/04563—Control methods or devices therefor, e.g. driver circuits, control circuits detecting head temperature; Ink 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

Definitions

  • the invention relates to an arrangement for data tracking for Warm-up cycles of inkjet printheads according to the preamble of Claim 1 and a method according to the preamble of Claim 10.
  • the invention comes in ink jet printing devices for use, for example in franking machines with inkjet print heads, printing stations of a mail processing machine or other printing devices.
  • At least one sensor of a printing block is used, which, like a heating resistor, is also connected to the franking machine control via an internal franking machine interface circuit.
  • An interface circuit internal to the franking machine has already been presented in EP 716 398 A2 (US 5,710,721).
  • the printing block contains, for example, three ink printing modules.
  • the ink printing modules are arranged according to a solution communicated in EP 713 776 B1 (US 5,757,402) between the identically constructed circuit modules, the latter each carrying a heating resistor and a sensor.
  • the printing block and thus also the ink are preheated to a predetermined temperature.
  • ink-jet printers or franking machines with ink-jet printing technology must first reach a predetermined operating temperature before the printing block or printer is released for printing.
  • a sensor constantly measures the temperature in the ink printhead. The specific warm-up data are determined for each ink cartridge each time the device is switched on. A repeated free spraying is carried out cyclically, thereby spraying a large volume of ink.
  • ink splashing it is necessary to electrically heat a heating resistor near a nozzle so that part of the water in the water-based ink evaporates suddenly (bubble jet principle).
  • the ink jet print head is controlled with pressure voltage pulses of approx. 12 V and a duration of approx. 1.9 - 2.3 ⁇ s.
  • the nozzle is actuated a thousand times with a pressure pulse voltage value that is set lower in each case.
  • the course of the temperature curve measured in this way is evaluated.
  • the resulting print pulse voltage value is used for subsequent printing.
  • the ambient temperature also has an influence on the measurement (Fig. 5).
  • the preparation time thus required then has a predetermined duration of approx. 1 min. Otherwise, if it could be started from a standby mode for the inkjet printer, this could allow the printing task to be carried out immediately.
  • the correct operating temperature of 15-40 ° C is maintained if the ink jet print head is operated in standby mode without printing on a print carrier.
  • the operating temperature can be maintained by electrically heating the heating resistor near each nozzle so that little or no water of the water-based ink evaporates.
  • An energy pulse of approx. 0.75 ⁇ s is then only sufficient for warming up (pulse warming-up), but not yet for printing.
  • the PWU method pulse warming-up
  • a predetermined operating temperature can also be maintained with a stronger energy pulse, which is additionally supplied at intervals in which no printing takes place, which on the one hand allows immediate printing.
  • a stronger energy pulse> 2 ⁇ s leads to ink splashing.
  • the ink supply of a cartridge is limited to approx. 42 ml and is therefore used up in standby mode. Since the ink cartridges hold a much smaller volume of ink than, for example, the ink tank of the JetMail® franking machine, the ink cartridge life would be significantly reduced by any additional ink consumption during warm-up.
  • the invention has for its object an arrangement and a Data tracking method for inkjet printhead warm-up cycles to develop the one with less ink consumption faster operational readiness and satisfactory print quality principally enables.
  • the ink consumption / use of each ink cartridge and the aging are past conditions that are automatically taken into account by the franking machine. Aging does not only occur due to the length of time the head is operated, but also becomes full when not in use.
  • An expiry date for the ink cartridge is stored non-volatilely in each of the ink cartridges by the manufacturer of the franking machine. For example, an internal calendar clock of the franking machine can be used to determine the aging. Before the expiration date, use of the ink cartridge will decrease its value. As a result, it seems justified to start faster at the expense of the cartridge life. You can also determine whether the ink cartridge has expired.
  • the controller is programmed to automatically carry out a quick start at the expense of the cartridge life, which allows the time period until the cartridge to operate again to be reduced to a minimum length.
  • a number of n days can be stored in a non-volatile manner as a limit value in each of the ink cartridges. The latter is decremented daily until a number of zero days is reached. If the specified limit values on days are not reached, it is possible to carry out a correspondingly faster start at the expense of the service life of the cartridge.
  • a number of n days is stored as a non-volatile limit and a counter is incremented daily until a number of days is reached which corresponds to the aforementioned limit. If predetermined limit values are exceeded on days or again, it is possible to carry out a correspondingly faster start at the expense of the service life of the cartridge.
  • the data relating to the past take into account the change in temperature behavior due to use and aging of the ink cartridge.
  • This temperature-related, past-related and / or user-related data tracking requires warm-up data which are assigned to the current condition data in a table. They are supplied by sensors and memory, possibly by a clock / date module.
  • the microprocessor of the control of the printing device carries out a determination of the ambient temperature, the head temperature, the fill level, the length of time the head is operated up to the current date and the user request and selects or calculates warm-up data.
  • FIG. 1 shows a perspective view of an open one at the top Franking machine 1.
  • the franking machine 1 has a slot-shaped Opening 3 in its housing 4.
  • the direction of transport for a supplied - Mail item not shown is marked by an arrow and runs from top left to bottom right.
  • the mail piece arrives at further transport to rest against a guide plate 2 of the franking machine 1.
  • the open housing 4 shows two in the printing position positioned 1 ⁇ 2 inch inkjet printheads.
  • the latter each have one own data and ink storage and are therefore also called Ink cartridges called.
  • An ink storage container holds approx. 40 ml Ink.
  • the connection side of the 1 ⁇ 2 inch ink cartridges 21, 22 is in trained in a predetermined manner.
  • Corresponding tax and Contacting units 211 and 221 are for electronic signal conversion and electro-mechanical connection to the connection side of the 1 ⁇ 2 inch Ink cartridges 21, 22 adapted.
  • FIG. 2 shows an ink cartridge 21, which is an electronic semiconductor chip 2100 in a head that hangs on a neck 2103.
  • the head has a nozzle plate 2104 in the ejection direction and orthogonal a parallel interface with an electrical contact unit 2105 to control the inkjet print head.
  • the ink cartridge 21 has a bulbous ink reservoir 2106 as an ink storage and opposite an electronic memory chip 210 for storage warm-up data of the ink jet print head 21 with electrical Contacts 2107 for querying the warm-up data, the fill level data and more data.
  • the latter include a manufacturer identification number which is checked by the control unit of the printing device whether a valid ink cartridge 21 has been installed.
  • the electronic and mechanical means of prevention 210, 2107 and 2108 are preferably combined in one structural unit and on the ink cartridge housing wall (on the neck or Back) attached non-releasably (for example by gluing).
  • the Electronic memory chip 210 for storing warm-up data has one serial interface with electrical contacts 2107 for querying data.
  • a control and contacting unit 211 for electronic signal conversion and mechanical connection with the 1 ⁇ 2 Inch ink cartridge provided.
  • a second electronic memory chip 220 (not shown) is corresponding provided for the second ink cartridge 22, which is basically constructed in the same way as the first ink cartridge 21.
  • FIG. 3 shows a block diagram of the electronic semiconductor chip 2100, which identifies at least one data memory 2102 of the ink cartridge 21, a sensor 2109 for the head temperature and ink ejection means E1 ... En ... E300 of a head 2101.
  • the ink ejection means contain heating resistors R1 ... Rn ... R300, whereby one heating resistor is assigned to an ink chamber and is controlled by a negator N1, ..., Nn, ..., N300.
  • Each negator N1, ..., Nn, ..., N300 is on pins for an address input A1, ..., An, ... for a power input P1, ..., Pn, ... and for ground potential G1 , ..., Gn, ...
  • the pins for ground potential G1, ..., Gn, ... and those of the power inputs P1, ..., Pn, ... are combined for a preselection to 14 groups each.
  • 20 ink ejection agents E262, E264, ..., En, ..., E298, E300 of a head 2101 are common via the pins P14 and G14 of the fourteenth group and 22 ink ejection agents E86, E88 are connected via the pins P6 and G6 of the sixth group , ..., Em, ..., E126, E128 of head 2101 can be preselected together.
  • the pins for an address input A1 to A7, A9 to A14 and A16, ..., An, ..., A22 are combined to form 20 address inputs A1, ..., An, ..., A22 which contain the 20 ink ejection means E262 , E264, ..., En, ..., E298, E300 of the fourteenth group of the head 2101 individual.
  • the pins for an address input A1, ..., An, ... for the other groups are combined up to a maximum of 22 address inputs A1, ..., An, ..., A22, around the 22 ink ejection means, for example the sixth Group to be able to select individual. This means that with 50 contacts of the 2105 contacting unit, over 300 dots can already be addressed.
  • the memory cells of a read-only memory 2102 can also be individually addressed via the 22 address inputs A1, ..., An ..., A22.
  • the word width of the ROM 2102 is 1 bit, which can be queried via the pins R10x, G6, for example to query the type (1 bit), the ink cartridge serial number (8 bit) and possibly other data (13 bit).
  • Each memory cell is constructed similarly to the circuit for an ink ejection agent. It has a negator with FET and a drain resistor. The latter is mask programmed and can be connected in parallel to a reference resistor if pins G14 and G6 are connected. A resistance reference value is queried via contact pin R10x if G14 is selected. Another contact pin S is provided for querying the head temperature sensor.
  • FIG. 4 shows a block diagram with a control and contacting unit (pen driver unit) and the electronic control unit of the printing device.
  • the control unit 14 of the printing device has at least one microprocessor 140, a user interface 142, 143, a memory 200, a serial interface 144 and a clock / date module 145.
  • the control unit 14 is, for example, one meter of a franking machine and also contains a secure accounting unit 141 (Secure Accounting Device) for booking frankings.
  • the control unit 14 is connected to the memory 200.
  • the control unit 14 is connected to the contacting unit 2107 of the memory 210 via a serial interface 144 via a contacting unit 2117 of the control and contacting unit 211.
  • the latter is, for example, an E 2 PROM or similar non-volatile read / write memory.
  • the control and contacting unit 211 contains a user-specific circuit (ASIC) 2111 and a temperature sensor 2119 for determining the ambient temperature.
  • ASIC user-specific circuit
  • the inkjet print head temperature from sensor 2109 and an 8-bit ink cartridge serial number can be queried from read-only memory 2102 (ROM) via contacting unit 2115 of a parallel interface of ASIC's 2111 of control and contacting unit 211.
  • the latter supplies the 8-bit ink cartridge serial number to the contact unit 2105 of the parallel interface of the semiconductor chip 2100, which is connected to the contact unit 2115 of the parallel interface of the user-specific circuit ASIC 2111.
  • the data stored in the memories 200, 210, 220 are called up by the microprocessor and the head temperature determined by the sensor 2109 is queried.
  • the user-specific circuit (ASIC) 2111 of the control and contacting unit 211 receives serial signals, which are now supplied by the control unit 14 of the printing device 1 so that they are converted into parallel control signals for the electronic semiconductor chip 2100.
  • a voltage converter (DC / DC) 2112 - controlled by the ASIC 2111 - generates the compressive voltage at the required level.
  • a second control and contacting unit 221 (not shown) for the second ink cartridge 22 is basically constructed in the same way as the control and contacting unit 211 for the first ink cartridge 21.
  • a common pressure control unit 20 (not shown) is also possible, which contains a user-specific circuit (ASIC) 2011 and a voltage converter (DC / DC) 2012 and to which two contacting units 211 and 221 can be plugged.
  • the common pressure control unit 20 is controlled by the control unit 14.
  • a possible difference between the two ink cartridges 21 and 22 with respect to the drive pulse energy is then compensated for with the same pulse height by means of a modified pulse duration.
  • the method provides for warm-up data to be stored under first conditions, for second conditions to be determined and for the associated warm-up data to be determined under current second conditions.
  • the E 2 PROM or a comparable non-volatile memory 210, 220 arranged on the ink cartridge 21, 22 is provided for storing warm-up data in a first memory area and the ink cartridge serial number in the second memory area, the latter with the ink cartridge serial number stored in the memory ROM 2102 is identical.
  • the microprocessor 140 uses the ink cartridge serial number from the ROM 2102 to access the first memory area of the memory 200 or 210, 220 with the warm-up data.
  • a manufacturer identification number of the manufacturer supplying the printing device 1 and ink cartridges 21, 22 can be stored in the memories 200 or 210, 220.
  • the manufacturer identification numbers of all ink cartridges 21, 22 are identical.
  • the authorization to use the ink cartridges 21, 22 can be checked by the microprocessor 140 on the basis of the manufacturer identification number, which is stored in a memory area of the memory 200.
  • the shape of the contacts 2107, the type of interface (serial) and mechanical prevention means 2108 additionally limit the possibilities of the user to use the ink cartridges from another manufacturer without authorization.
  • the correctness of all codes or numbers can be checked, for example, by a remote data center.
  • Warm-up data is stored under the first conditions in a manner known per se when the ink cartridge is installed for the first time, while at the same time the authenticity of the consumables (ink cartridge) can be checked in a remote data center using the manufacturer identification number and the 8 bits - Ink cartridge serial number or alternatively based on a code word read from the memory 210, 220 by comparison with a reference code word stored in a remote data center.
  • the code word can also be formed by encrypting serial and identification numbers or is only assigned to the serial number. Communication with the remote data center can then be intercepted but not evaluated in order to generate counterfeit ink cartridges with a real ink cartridge serial number and manufacturer identification number.
  • FIG. 5 shows a temperature / voltage diagram
  • the determination of warm-up data under the first conditions when the ink cartridge is installed for the first time is now explained.
  • the prerequisite is that the ambient temperature ⁇ U measured by the control and contacting unit 211, 221 (pen driver unit) is in the optimal range and that, after calibration, the head temperature ⁇ K can be measured by a temperature sensor of the printhead.
  • the ambient temperature ⁇ U measured by the control and contacting unit 211, 221 pen driver unit
  • the head temperature ⁇ K can be measured by a temperature sensor of the printhead.
  • 1 ⁇ 2 inch ink jet cartridges for example 22 temperature values of the printhead are measured after being switched on, each of which corresponds to a predetermined pressure pulse voltage value.
  • Each nozzle is actuated a thousand times with a pulse voltage of ⁇ 12 V with a pulse width of approx. 2 ⁇ s.
  • the pressure pulse voltage value is gradually reduced before each further measurement.
  • the measured temperature curve is evaluated by looking for the local minimum of the temperature curve.
  • the associated pressure pulse voltage U P ( ⁇ Kmin ) is multiplied by a factor of 1.3.
  • the resulting optimal pressure pulse voltage value is used for printing and warming up. When warming up, however, the pulse width is reduced to approx. 0.75 ⁇ s.
  • the optimal pressure pulse voltage value and the measured voltage temperature curve are stored non-volatile.
  • n O the ink cartridge is automatically evaluated as new if no past-related data are known yet.
  • U Popt 1.3
  • Table 1 was recorded for a new print head with serial number 256 and corresponds to the diagram shown in Fig. 5. Starting from a maximum value of 12 V, the voltage is gradually reduced. The step size is 0.2 V. The minima ⁇ Kmin have been highlighted in bold.
  • FIG. 6 now shows the flow chart for data tracking for warm-up cycles of ink jet print heads.
  • the identification number ID of the cartridge manufacturer is preferably read by the control unit 14 (step 101) and checked (step 102). If the cartridge manufacturer is permitted, the program branches to step 104. Otherwise, a branch is made back to step 101 via step 103 for submitting an error message. This ensures quality because only cartridges from a certain manufacturer are accepted.
  • step 104 it is checked whether a new installation of an ink cartridge should take place. Ink cartridges that have already been used and replaced in the meantime can also be used again. For such an ink cartridge that is not as good as new, warm-up data, with parameter n o, the first condition and possibly a code word are already stored in the memory.
  • the control unit 14 has a security module 141 which is able to form a code (word) by encrypting the serial number and the manufacturer identification number.
  • the code word is stored in the memory 210, 220 of the ink cartridges. If a code word or the parameter n O is stored, no new installation is carried out and the process branches to step 111 in order to carry out a data update for a quick start in subsequent steps. Up to 256 different serial numbers with associated warm-up data and parameters can be stored in a memory 200 of the franking machine. The storage space requirement can be reduced, the more data (code, serial number and associated warm-up data and parameters) are stored in the memory 210, 220 of the ink cartridges themselves.
  • the serial number is first read in step 105 and, if necessary, a code is generated which is at least assigned to the serial number.
  • a branch is made to step 106 in order to trigger the automatic transmission of the code or the serial number to the teleportodata center TDC.
  • the transmission can also take place later, for example in the case of communication for the purpose of recharging the credit.
  • the consumables used are recorded in the TDC and the serial number code is checked.
  • the ink cartridge of the particular manufacturer with the read serial number must actually have been delivered to the user. Otherwise, measures can be taken to protect against piracy products.
  • a minimum the head temperature ⁇ is Kmin.
  • the pressure pulse voltage U P ( ⁇ Kmin ) is determined, which is assigned to the minimum.
  • the optimum pressure pulse voltage is then determined according to equation (1) above and stored in the first memory area of a memory 200 or 210, 220.
  • the serial number or code and first conditions n o are stored in the second memory area of the memory 200 or 210, 220.
  • a first table for the optimal pressure pulse voltage is selected as a function of the parameters or according to the equation ( 2) generated.
  • a branch is made via step 104 to step 111, where a query is started as to whether second conditions have been newly entered. In the case of a new installation, this is not the case and the process branches to step 113, where a query is started as to whether second conditions have been saved. If a parameter O user has been entered and stored in a user- related manner at a previous point in time and is to be made ready for operation quickly, a branch is made to step 114.
  • step 116 warm-up data associated with the serial number of the ink cartridge are stored.
  • the head temperature measured repeatedly in step 118 is monitored (steps 119, 120). If it is determined in step 119 that a minimum of the optimum head temperature range is not undershot, a check is made in step 120 as to whether a maximum of the optimal head temperature range is not exceeded. If the head temperature is within the optimal head temperature range, then the end (step 122) is reached.
  • step 121 If, however, the head temperature is below the optimal head temperature range, then ⁇ K > ⁇ Koptmin does not apply and the process branches back to step 117 for preheating.
  • the warming-up impulses lead to a stepped head temperature. Otherwise an error message is issued (in step 121) if the check in step 120 shows that a maximum of the optimal head temperature range is exceeded (then attach K ⁇ Koptmax does not apply ).
  • the reduction in warm-up cycles is noticeable with a used ink cartridge.
  • the invention has the advantage that in the case of ink cartridges which are not as good as new, the warm-up cycles with ink splashes of a new installation can be avoided.
  • the warm-up data U Popt and t 0.75 ⁇ s stored in step 116 guarantee a warm-up of the print head of an ink cartridge which is not as good as new in less than half the time, ie within a time of ⁇ 30 s.
  • the query in step 111 can show that a second condition should be re-entered.
  • a user-related parameter O user can be entered by the user himself using the keyboard.
  • the Teleporto data center enters a parameter O user in connection with a credit recharge and after checking the serial number of the ink cartridge, which influences the warm-up time.
  • the parameter n P relates to data related to the past, such as the amount of ink remaining, because the fill level, the number of frankings or the operating age since the first installation or the usage date up to which the ink should be used. This means that a number of tables have to be generated or set up with empirically determined data. A table can then be selected from the number.
  • the current second conditions are described by the ambient temperature ⁇ U , the ink print head temperature ⁇ K and parameter n P , O user , the parameter n P depending on the use of the ink cartridge and the parameter O user depending on the selection made by the user for one shortened warm-up cycle can be called by the control unit 14.
  • step 116 is then reached again in order to store the optimal warm-up data determined, assigned to a code or to the serial number of the ink cartridge.

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EP01250258A 2000-07-26 2001-07-13 Dispositif et méthode d'adaptation automatisée des cycles de chauffage des têtes d'impression jet d'encre Expired - Lifetime EP1176016B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10036345A DE10036345B4 (de) 2000-07-26 2000-07-26 Anordnung und Verfahren zur Datennachführung für Aufwärmzyklen von Tintenstrahldruckköpfen
DE10036345 2000-07-26

Publications (3)

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EP1176016A2 true EP1176016A2 (fr) 2002-01-30
EP1176016A3 EP1176016A3 (fr) 2003-07-02
EP1176016B1 EP1176016B1 (fr) 2006-01-11

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EP01250258A Expired - Lifetime EP1176016B1 (fr) 2000-07-26 2001-07-13 Dispositif et méthode d'adaptation automatisée des cycles de chauffage des têtes d'impression jet d'encre

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US (2) US20020140755A1 (fr)
EP (1) EP1176016B1 (fr)
DE (2) DE10036345B4 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6733194B2 (en) 2002-07-04 2004-05-11 Francotyp-Postalia Ag & Co. Kg Arrangement for controlling printing in a mail-processing device
US6739245B2 (en) 2002-07-04 2004-05-25 Francotyp-Postalia Ag & Co. Kg Method for controlling printing in a mail-processing device
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US6733194B2 (en) 2002-07-04 2004-05-11 Francotyp-Postalia Ag & Co. Kg Arrangement for controlling printing in a mail-processing device
US6739245B2 (en) 2002-07-04 2004-05-25 Francotyp-Postalia Ag & Co. Kg Method for controlling printing in a mail-processing device
US6776544B2 (en) 2002-10-31 2004-08-17 Francotyp-Postalia Ag & Co. Kg Arrangement for printing a print image having regions with different print image resolution
US7325896B2 (en) * 2003-05-30 2008-02-05 Hewlett-Packard Development Company, L.P. Temperature calibration for fluid ejection head
US7607746B2 (en) * 2003-05-30 2009-10-27 Hewlett-Packard Development Company, L.P. Temperature calibration for fluid ejection head
EP1491347A1 (fr) 2003-06-27 2004-12-29 Francotyp-Postalia AG & Co. KG Méthode et système pour réduire les erreurs d'impression dans un appareil de traitement de courrier

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US20020140755A1 (en) 2002-10-03
DE10036345B4 (de) 2005-07-07
US7431415B2 (en) 2008-10-07
EP1176016A3 (fr) 2003-07-02
EP1176016B1 (fr) 2006-01-11
DE50108663D1 (de) 2006-04-06
DE10036345A1 (de) 2002-02-21
US20040212653A1 (en) 2004-10-28

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