EP0352698A2 - Procédé pour obtenir une information concernant le type de la tête d'impression - Google Patents

Procédé pour obtenir une information concernant le type de la tête d'impression Download PDF

Info

Publication number: EP0352698A2
Authority: EP; European Patent Office
Prior art keywords: type; print; resistance; printing; print head
Prior art date: 1988-07-25
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

EP19890113586

Other languages

German (de)

English (en)

Other versions

EP0352698B1 (fr

EP0352698A3 (fr

Inventor

Ralph Bäuerle

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.)

Wincor Nixdorf International GmbH

Original Assignee

Wincor Nixdorf International GmbH

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.)

1988-07-25

Filing date

1989-07-24

Publication date

1990-01-31

1988-07-25 Priority claimed from DE19883825232 external-priority patent/DE3825232C1/de

1989-07-24 Application filed by Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH

1989-07-24 Priority to AT89113586T priority Critical patent/ATE102548T1/de

1990-01-31 Publication of EP0352698A2 publication Critical patent/EP0352698A2/fr

1991-03-13 Publication of EP0352698A3 publication Critical patent/EP0352698A3/fr

1994-03-09 Application granted granted Critical

1994-03-09 Publication of EP0352698B1 publication Critical patent/EP0352698B1/fr

2009-07-24 Anticipated expiration legal-status Critical

Status 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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/34—Bodily-changeable print heads or carriages

Definitions

the invention relates to a method for generating information which indicates the type of a print head present in a printer which contains at least one printing element, the actuator of which has an electrical resistance.
printers are used to output text, data and image information.
a print head is used to transfer print characters onto a carrier, for example paper.
Newer printers are characterized by the fact that they can contain different types of printheads in a printer housing.
Such a printer is e.g. described in DE-OS 35 11 386. With this device, the print heads of a printing station can be replaced, and a printer can contain several such printing stations.
the printer has a simple basic housing that can be manufactured very economically in large quantities. Depending on the application, the basic housing is equipped with different printheads, whereby the customer's individual equipment requirements only have to be taken into account during final assembly. As a result, a wide variety of types of printers and high cost-effectiveness of production can be achieved. Devices of this type are e.g. as passbook printer, cash receipt printer or similar used.
the print heads have a large number of print elements for transferring the print characters onto the carrier are designed differently according to the different printing processes.
the mosaic printing process has gained particular importance.
the drawing pattern is put together in a mosaic from individual color dots, which are generated by the printing elements.
These pressure elements are each actuated by an actuator, the electrical resistance of which, in addition to an active resistance, can also be a reactance or an impedance with a capacitive or inductive component.
such a printing element consists of a nozzle which, when a piezoelectric actuator is actuated, sprays an ink drop onto the data carrier with an electrical pulse, which forms a color dot there.
the print sign is created by combining many individual color dots in a grid.
needle printing the individual printing elements are designed as needles. These are deflected by an electromechanical actuator due to the force of a current-carrying coil and press an ink ribbon against the print carrier, which also creates a punctiform drawing pattern.
thermal printing processes should also be mentioned, in which the pressure element contains an ohmic resistor as an actuator, which heats up when power is supplied. Dot-shaped printed characters are transferred to the print carrier via a melting ink ribbon or are generated directly on a heat-sensitive record carrier.
control parameters are generated in a control device to which the information to be printed is fed.
Important control parameters are, for example, the selection of the printing element for printing a mosaic point or a printing element combination for Imprinting a character and the amount of energy that must be supplied to the respective printing elements in order to carry out the printing process, for example in the form of electrical energy.
Another important control parameter determines the timing of the printing process and its duration. The correct timing of the printing process determines the location of the print character on the carrier depending on the relative movement between the print head and the carrier. Different types of print heads differ in the control parameters.
control parameters to be provided by the control device must also be adapted to the type of print head. Since the control parameters of the different types of printheads are known, it is possible to construct a control device in such a way that it contains all the control parameters of the types of printheads provided in a printer and can be called up as required.
the control parameters can, for example, be stored as data in a memory or can be preset via controllable circuits. So that the control device can provide a print head with the control parameters that can be used by it, it requires information about the type of print head to be controlled.
This object is achieved according to the invention for a method of the type mentioned at the outset by determining the resistance and assigning it to one of a number of resistance ranges which correspond to different types of printhead and by generating a type signal as information depending on the assignment which has been made.
the electrical resistance of a printing element is used as a distinguishing feature between the different types of printheads. This resistance is characteristic of a certain type of printhead.
a piezoelectric actuator ink jet printhead has a high resistance with a capacitive resistance component, while a wire printhead containing a coil has a low resistance with an inductive component.
the resistance value of print elements of thermal printheads is generally between these values.
the resistance value of printheads in one class e.g. the class of needle printheads, can characterize a particular embodiment or type of printhead.
the coils for actuating the printing elements of needle printheads with a large needle stroke or needle printheads with a small needle stroke are designed differently, i.e. the resistance values of the corresponding coils can also be evaluated as a distinguishing feature.
the resistance of the printing elements of different types of printheads is generally known from the start or can be determined by a simple resistance measurement.
the resistance value of the printing elements of a certain type of printhead lies within narrow tolerance limits of a defined resistance range.
the invention makes use of this knowledge by determining the resistance value of a print element of a print head to be tested and assigning it to one of the previously defined resistance ranges. The assignment is indicated by a type signal.
the resistance value of a pressure element can be determined in a simple manner via the same current path via which the electrical energy for actuating the pressure element is supplied. In this case, no further design measures, such as additional contacts or signal lines, are required on the printhead, but the commercially available printheads can be used. This results in a significant economic advantage.
the invention can be applied to practically all types of print heads, the print elements of which are actuated via electrical or electromechanical actuators and consequently have an electrical resistance.
the resistance value ⁇ is of practical importance as identification information. This value is to be interpreted as meaning that a specific printing element whose resistance value is to be determined is not present in the print head.
the presence or absence of a print element can characterize a particular type of print head. E.g. In this way, a 7-needle print head can be distinguished from a 9-needle print head by determining the resistance value of the eighth or ninth print element. If this is infinite, this indicates a 7-segment type needle print head.
Another embodiment of the invention is characterized in that a control device can generate different control parameters depending on the type of the print head to be controlled, and that the control parameters suitable for the respective print head are set by a type signal which characterizes the type of print head.
the control device receives information about the type of print head present in a printer from the type signal. Since the control parameters of the different types of printheads are known, it is possible to construct a control device in such a way that it contains all the control parameters of the types of printheads provided in a printer and can be called up as required.
the control parameters can, for example, be stored as data in a memory or can be preset via controllable circuits.
the set of control parameters assigned to a specific type of print head can thus be generated depending on the type signal, so that the print head is supplied with control information that can be used by it. This procedure means that the overall control effort remains low, since several different printheads can be controlled with a single control device.
a circuit arrangement for carrying out the method according to the invention is characterized in that a measuring resistor is provided for determining the resistance, through which a current depending on the resistance value of a pressure element flows. This resistance is connected in series with the resistance of the actuator of the pressure element, the resistance value of which is to be determined. Both resistors, through which the same current flows, thus form a voltage divider.
the voltage drop U across the measuring resistor is used as a measure of the resistance value of the pressure element and fed to a downstream evaluation circuit.
At least two pressure elements are connected in parallel via a decoupling diode operated in the forward direction.
This parallel connection is connected in series with the measuring resistor.
the decoupling diodes are connected in such a way that the test current required to determine the resistance value of the pressure elements can flow in the forward direction of the decoupling diodes.
the test currents of the affected pressure elements overlap and flow through the measuring resistor, whereby a voltage is generated.
the interconnection of several pressure elements results in a higher sensitivity when evaluating the voltage.
At least one printing element that belongs to a printing head with a lower number of printing elements and at least one printing element that only belongs to one printing head with a higher number of printing elements are in a printing station that can accommodate print heads with a different number of printing elements belongs to the respective decoupling diode.
a printing station e.g. Both a needle print head with 7 needles and a needle print head with 9 needles can then be connected, for example, the printing elements number 6 and number 8 with each other via the decoupling diodes. If the print station is equipped with the 9-needle print head, the test currents in the measuring resistor add up.
the emitter-collector path of a switching transistor is connected in the signal path between the measuring resistor and the pressure element, which is controlled at its base by a test signal.
the switching transistor is here switched back and forth by the test signal between the "lock” and “lead” states.
the test current flows through the resistance of the pressure element and is used to determine the resistance value.
the printing elements are in the rest position, ie the printing elements are not supplied with current pulses which trigger a printing process and which could falsify the test current.
the "blocking" state no test current can flow through the pressure elements. The printing elements are then ready to receive the current pulses required for printing.
an evaluation circuit for generating the type signal, which contains at least one threshold value circuit, the threshold value of which is assigned to a specific resistance range which corresponds to a type of printhead.
the threshold circuit compares the voltage, which corresponds to the resistance of a printing element, with a reference voltage. This forms the threshold value, when exceeded the output signal of the threshold circuit is switched.
the reference voltage is chosen so that the two states of the output signal of the threshold circuit can be clearly assigned to a resistance range and thus to a certain type of print head. Based on the output signal, a maximum of two types of print heads can be distinguished.
the output signals of the threshold circuits can advantageously be logically combined. This can be done in that the output signal of each threshold circuit conjunctively with the inverted output signals of the threshold circuits with a higher threshold is linked to a type signal, and that the output signal of the threshold circuit with the highest threshold value is output directly or via a non-inverting gate as a type signal. This measure assigns a type signal to each type of printhead.
the logical combination of the output signals of the threshold circuits means that only one of the type signals has the binary value 1, while all other type signals have the binary value 0. The signaling of a certain type of printhead with digital coding is thus achieved in a particularly simple manner.
FIG. 1 shows various functional units of a printer which contains a plurality of printing stations designated by 10, 12, 14.
Each of these printing stations 10, 12, 14 can accommodate a printhead which is mechanically and electrically detachably connected to the respective printing station and can be exchanged.
the printing stations 10, 12, 14 are designed to accommodate different types of print heads can.
the printing station 10 is occupied by a print head 16 which is designed as an ink mosaic printer.
a printing head 18 is connected to the printing station 12, which works according to the needle printing method and has nine printing elements.
the printing station 14 receives a needle print head 20, which has seven printing elements.
the print heads 16, 18, 20 are supplied by a control device 22 with print head-specific control parameters via the signal paths 24, 26, 28.
the control device 22 receives the information to be printed via a signal path 30 from a higher-level controller (not shown) of the printer or from an external controller.
a circuit arrangement for print head detection 32 receives electrical signals 34, 36 38 from the print stations 10, 12, 14, which uniquely characterize the type of print heads 16, 18, 20 present in the print stations 10, 12, 14.
the circuit arrangement for printhead recognition 32 forms from the electrical signals 34, 36, 38 a type signal 40 characterizing the type of the printhead, which is fed to the control device 22. This enables the various types of print heads 16, 18, 20 to be supplied with the control parameters typical of each print head.
Fig. 2 various assemblies of the control device 22 are shown in addition to other. The designations for modules already described in FIG. 1 have been retained.
the type signal 40 is made available to various assemblies via the circuit arrangement for print head detection 32.
the different types of print heads 18, 20 are controlled via a multiplexer module 50. This switches one of the print heads 18, 20 depending on a multiplexer signal 52 ready.
the multiplexer signal 52 is also generated by a higher-level controller, which coordinates the printing processes of different printing stations.
a driver module 54 supplies the current pulses required to actuate the individual print elements of the print heads 18, 20. For this purpose, the driver module 54 is supplied with control parameters specific to the printhead to be described.
the selection of the printing elements for printing a character or a mosaic point is made indirectly via character generators 56 and 58.
the addresses of the printing elements are stored in the printhead in character sets, which are to be actuated to generate a specific printing character.
the character generator 56 is used to generate print characters for a mosaic print head with 9 print elements and the character generator 58 for one with 7 print elements.
the character generators 56, 58 receive the information to be printed via a signal 60 from the higher-level control.
a data multiplexer 62 connects the data of one of the character generators 56, 58 to the driver module 54.
the switching state of the data multiplexer 62 is controlled by the type signal 40.
the energy for actuating the printing elements selected by the character generator is taken from a controllable current source 64. It supplies a defined current at its output, the strength of which is also controlled via the type signal 40.
the triggering of the printing process and its duration is controlled by a controllable clock module 66. It causes the power supply to the printing elements to be switched on and off via the driver module 54. Both the duration of the current The supply as well as the timing of the current pulses with respect to a position signal, which indicates the relative position between the print head and the recording medium, can vary with different types of print heads. Therefore, these time parameters are generated depending on the type signal 40 and output to the driver module 54.
the type signal 40 is fed to a display unit 68. This indicates the type of print heads 18, 20 present in a printer via signal lamps 70, 72, 74.
the type signal 40 can also be output via an adapter 76 in order to be further evaluated at another point. It is thus possible, depending on the type signal 40, to also monitor and control the feed of the print carrier or the ribbon feed.
other control devices which, for example, control the relative movement between the print head and print carrier in the row and column direction, can also evaluate the type signal 40 in order to adapt control processes to the type of print head present in the printer.
a circuit arrangement is shown which enables automatic detection of different types of printheads.
the designations of FIGS. 1 and 2 were retained if the same modules were used.
a print head 17, which works according to the thermal printing method, and the wire print head 18 are connected to the supply voltage V.
the multiplexer module 50 is controlled via the multiplexer signal 52.
three print elements are shown from the large number of print elements.
a diode 92 switched in the reverse direction serves to reduce voltage pulses which can arise as a result of induction when the pressure elements 86, 88, 90 are switched off.
a diode 93 switched in the reverse direction is also assigned to the print head 17. This is not absolutely necessary in the case of a thermal print head, since its print elements show ohmic behavior. Since, instead of the thermal print head 17, a dot-matrix print head can also be used, the print elements of which have inductive behavior, the diode 93 is also provided here.
connecting terminals 94, 96, 98, 99 and 100, 102, 104, 105 are provided.
the printing elements 86, 88, 90 of the needle printhead 18 contain small electromagnets which, when acted upon by a current pulse, deflect a movable needle which generates a halftone dot on a print carrier via an ink ribbon.
the needles of the print elements 86, 88, 90 are arranged vertically one above the other, so that when the print head 18 moves transversely to a print carrier, rasterized characters are produced when the print elements 86, 88, 90 are actuated.
the driver module 54 together with the controllable current source 64 delivers the required current pulses.
the selection of the printing elements, the temporal position and the duration of the current pulses are specified by the control device 22 as further control parameters 106.
the printing elements 80, 82, 84 consist of small electrical heating resistors that heat up when the power is supplied and transmit punctiform print characters to the print carrier via a melt ribbon.
the print head 17 is supplied with current pulses from the driver module 54 and the controllable current source 64.
a decoupling diode 108 and 110 with its anode connection are connected to the interconnected cathodes of diodes 83, 89 and to the cathodes of diodes 85, 91, the cathode connections of which are brought together at a current summing point 112.
the current sum point 112 is connected to the collector terminal of a switching transistor 114 of the NPN conductivity type, the base of which is supplied with a test signal 115.
the emitter connection of the switching transistor 114 is connected via a measuring resistor 116 to the reference potential and directly to the non-inverting inputs of a first threshold circuit 118, a second threshold circuit 120 and a third threshold circuit 122.
a first reference voltage 124, a second reference voltage 126 and a third reference voltage 128 are fed to the inverting inputs of the threshold value circuits 118, 120, 122.
the reference voltage 124 has the lowest voltage value and the reference voltage 128 the highest.
the threshold value circuits 118, 120, 122 each carry a low-level signal at their output if their associated reference voltage 124, 126, 128 is greater than the voltage at their non-inverting inputs. If the voltage exceeds the level of one of the reference voltages 124, 126, 128, the affected threshold circuit 118, 120, 122 switches its output signal to high level. The low level is assigned to binary value 0 and the high level to binary value 1.
the output signal of the threshold circuit 118 is fed to an AND gate 130 at its non-inverting input. It has two further, however inverting inputs, to which the output signal of the threshold circuit 120 or that of the threshold circuit 122 is applied.
the output signal of the threshold circuit 120 is a second AND gate 132 at its non-inverting input fed. Another inverting input is connected to the output of the threshold circuit 122.
a third gate 134 is provided in the circuit arrangement, which works as a non-inverting driver circuit and whose input is connected directly to the output of the threshold value circuit 122.
the gates 130, 132, 134 generate the type signals 40a, 40b, 40c.
the multiplexer module 50 is controlled via the multiplexer signal 52 such that the print head 17 is connected to the supply voltage V.
the print head 17 is thus activated and a test phase can follow in which the type of the print head is determined.
the switching transistor 114 is turned on at its base via the test signal 115.
the driver module 54 is activated such that the switches indicated in FIG. 3, which supply the pressure elements 80, 82, 84 with current, are open.
the signals for controlling the switching transistor 114 and the driver module 54 are provided by a higher-level controller, not shown.
the strength of the current essentially depends on the level of the supply voltage V, the size of the resistance of the pressure elements 82, 84 and the measuring resistor 116. This current drops a voltage across the measuring resistor 116, which voltage is supplied to the threshold value circuits 118, 120, 122.
the threshold circuits 112, 120, 122 compare this voltage value with the reference voltages 124, 126, 128 supplied to them and switch their output signal to high level when the voltage across the measuring resistor 116 is greater than the respective reference voltage 124, 126, 128.
the resistance of the pressure elements 82, 84 is known and varies only in a very small range.
the current through the measuring resistor 116 and thus also its voltage drop is thus characteristic of the type of printhead 16 being tested.
the reference voltages 124, 126, 128 are accordingly assigned to a specific range of the voltage across the measuring resistor, which characterizes a specific type of printhead. They are chosen so that they are at the lower limit of such a voltage range.
the threshold value circuit 120 sets a high level at its output, which corresponds to the binary value 1. Since, as already mentioned, the reference voltage 124 is lower than the reference voltage 126, the output signal of the threshold circuit 118 also has the binary value 1. However, the downstream AND gate 130 is supplied with the output signal of the threshold circuit 120 inverted, so that the result of the AND operation is logical Is 0, and a type signal 40a with binary value 0 is output by the AND gate 130. Furthermore, it is assumed that the reference voltage 128 is greater than the voltage applied to the measuring resistor 116. Then the output signal of the threshold circuit 122 is logic 0 and thus also the type signal 40c of the gate 134.
the output signal of the threshold circuit 122 is fed to the AND gate 132 in an inverted manner, so that together with the binary value 1 of the threshold circuit 120 the AND condition is fulfilled and the AND gate 132 its output generates the type signal 40b with binary value 1.
the type signal 40b is here assigned to the print head type "thermal print head”.
the binary value 1 indicates that the printhead 17 under test is a thermal printhead. Due to the special logic combination of the output signals of the threshold value circuits 118, 120, 122, it is achieved that only one of the type signals 40a, 40b, 40c can have the binary value 1.
This type of type signal generation shows the type of a printhead in a simple and clear code.
the test phase is ended in that the switching transistor 114 is switched to the blocking state via the test signal 115.
the printing elements 80, 82, 84 of the print head 17 can then be actuated by current pulses from the driver module 54 and can carry out the printing process.
the print head 17 is disconnected from the supply voltage V.
the print head 18 can now be switched to work mode via the multiplexer module 50.
the type of print head is determined in the manner described in a test phase that is provided before printing begins.
the head detection circuit with the components 124 to 134 can be expanded analogously in accordance with the number of print heads to be recognized. It is also possible to recognize printheads that have the same resistances of the printing elements, but whose number of printing elements is different.
a 7-pin printhead and a 9-pin printhead are given here as examples.
the anode of diode 108 is connected to a printing element that is present in both printhead types, e.g. to the printing element number 7.
the anode of the diode 110 is connected to the printing element which is only present in the print head with a higher number of needles, e.g. to the printing element number 8.
the printing station is equipped with a 9-needle printing head, the total current of the printing elements number 7 and 8 connected in parallel flows in the measuring resistor 116. However, if a 7-needle printing head is present in the printing station, it is halved the test current that is evaluated for printhead detection.
FIG. 4 shows the various signals and states of the circuit arrangement according to FIG. 3 over time t.
the print head 17 and the print head 18 are switched from the rest position to the work state, which is denoted in FIG. 4 by the states "OFF" and "ON".
the test signal 115 is set to the binary value 1 for a fixed duration.
the driver module 54 remains switched off, ie the print elements of the print head 17 are not supplied with current pulses.
the resistance of the print elements 82, 84 of the print head 17 is determined, and the type signal 40b assumes the binary value 1 for the duration of the test.
the test process is ended by resetting the test signal 115 to the binary value 0, as a result of which the type signal 40b also assumes the binary value 0.
the actual printing process which is controlled by the driver module 54, can now take place.
the type of print head 18 can also be determined in the same way, for which the steps described above are to be carried out.
the type of the print head 18 is indicated here by the binary value 1 of the type signal 40c, which is the type signal for needle print heads.
the method according to the invention can be used for almost any type of print head.
the only condition for this is that the actuators of the pressure elements each have a measurable electrical resistance.
This does not necessarily have to consist of an active resistor, but can also be a reactance, for example a capacitive resistor in the case of a piezo actuator in an ink jet print head, or an impedance with a mixed capacitive and inductive component.
the resistance of the pressure element actuator in the case of reactors and impedances, it is expedient to switch the resistance of the pressure element actuator as part of a circuit into which a test signal in the form of a voltage or a current is fed, which has a predetermined time-dependent profile.
the frequency dependence of the reactive component of the resistor causes a characteristic change in the test signal, which is based on the electrical variables such as voltage, current, phase in Circuit can be determined.
a certain curve shape for example a rectangular shape, is preferably given to the test signal.
the distortion of the waveform caused by the reactive component of the resistor which can be measured, for example, as a voltage across a measuring resistor in the circuit, is then a measure of the resistance value. It can also be determined in a simple manner whether the actuator contains an inductive or a capacitive resistance component.
a piezo actuator of an ink jet printhead has a capacitive resistance. This has the effect that when a rectangular test signal voltage is fed into the circuit, a high current flows in the circuit in the first moment, which drops exponentially in the further course. If the actuator has an inductive component, as is the case with a wire dot print head, the current in the circuit increases only slowly. By evaluating the current profile over time, it is therefore possible to determine the type of resistance of the actuator and thus also the type of the printhead.
the rectangular shape of the test signal is only one of several possible curve shapes. Other known shapes are, for example, saw tooth curves, pulse ramps or needle pulses. These curve shapes are also characteristically distorted if the resistance of the actuator contains a reactive component, so that this can be used in addition to the active component to determine the type of print head. Furthermore, it is possible to use an AC signal, for example a sinusoidal AC voltage, the fre quenz is changeable. As a result, the amount of the blind component of the resistance of the actuator can be adapted to a predetermined evaluation range and the sensitivity of a downstream evaluation circuit for recognizing print heads with frequency-dependent resistance components can be further increased.

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Printers Characterized By Their Purpose (AREA)
Particle Formation And Scattering Control In Inkjet Printers (AREA)
Ink Jet (AREA)
Electronic Switches (AREA)

EP89113586A 1988-07-25 1989-07-24 Procédé pour obtenir une information concernant le type de la tête d'impression Expired - Lifetime EP0352698B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT89113586T ATE102548T1 (de)	1988-07-25	1989-07-24	Verfahren zum erzeugen einer information ueber die art eines druckkopfes.

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE3825232		1988-07-25
DE3825231		1988-07-25
DE3825231		1988-07-25
DE19883825232 DE3825232C1 (en)	1988-07-25	1988-07-25	Method and circuit arrangement for producing information on the type of a print head

Publications (3)

Publication Number	Publication Date
EP0352698A2 true EP0352698A2 (fr)	1990-01-31
EP0352698A3 EP0352698A3 (fr)	1991-03-13
EP0352698B1 EP0352698B1 (fr)	1994-03-09

Family

ID=25870468

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP89113586A Expired - Lifetime EP0352698B1 (fr)	1988-07-25	1989-07-24	Procédé pour obtenir une information concernant le type de la tête d'impression

Country Status (3)

Country	Link
US (1)	US5033887A (fr)
EP (1)	EP0352698B1 (fr)
DE (1)	DE58907161D1 (fr)

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EP0380199A2 (fr) *	1989-01-27	1990-08-01	Shimadzu Corporation	Imprimante avec têtes d'impression interchangeables

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- 1989-07-24 DE DE89113586T patent/DE58907161D1/de not_active Expired - Fee Related

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Also Published As

Publication number	Publication date
US5033887A (en)	1991-07-23
EP0352698B1 (fr)	1994-03-09
EP0352698A3 (fr)	1991-03-13
DE58907161D1 (de)	1994-04-14

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Publication	Publication Date	Title
EP0352698B1 (fr)	1994-03-09	Procédé pour obtenir une information concernant le type de la tête d'impression
DE69819510T2 (de)	2004-09-23	Tintenstrahldrucker, Verfahren und System mit der Möglichkeit der Kompensation für nicht funktionierende Druckelemente
DE69003158T2 (de)	1994-02-10	Gerät und Verfahren, um defekte Heizelemente bei Tintenstrahldruckern nachzuweisen.
DE60110977T2 (de)	2006-05-04	Techniken zur Erhöhung der Tintenstrahlkopfidentifikations-Information bei begrenzter Verbindungsanzahl
DE3121481C2 (de)	1986-09-18	Auswechselbarer Druckkopf und mit diesem arbeitender Drucker
DE69834666T2 (de)	2007-02-08	Druckkopf, Aufzeichnungsgerät, den Druckkopf beinhaltend, Methode zur Identifizierung des Druckkopfes, und Methode zur Übergabe von Identifizierungsinformationen auf den Druckkopf
DE2937716C2 (fr)	1989-09-07
DE2343420C3 (de)	1978-12-14	Vorrichtung zur Erhöhung der Druck- und Ausgabegeschwindigkeit von Tintenstrahldruckern
DE4438600B4 (de)	2007-09-27	Thermodrucker
DE3641435A1 (de)	1987-06-25	Verfahren und vorrichtung zur temperatursteuerung von thermodruckern
CH632099A5 (de)	1982-09-15	Schnelldrucker.
EP0257570A2 (fr)	1988-03-02	Méthode d'alignement des injecteurs d'une tête d'impression à jet d'encre dans un dispositif d'enregistrement à encre et circuit électronique adapté à la mise en oeuvre de cette méthode
DE2714482B2 (de)	1980-09-11	Ansteueranordnung fur Thermoschreiber
DE2635398A1 (de)	1978-02-09	Verfahren und anordnung zur ansteuerung der druckmagnete eines matrixdruckers
DE69017936T2 (de)	1995-08-31	Treiber für einen Tintenstrahldrucker.
EP0320435A1 (fr)	1989-06-14	Imprimante thermique
DE60003192T2 (de)	2004-04-08	Integrierter druckkopf
DE2648828C3 (de)	1979-05-31	Vorrichtung zum Betätigen von Elektromagneten
DE69221418T2 (de)	1998-03-05	Aufzeichnungskopfantriebsvorrichtung
DE3139321A1 (de)	1982-04-15	Druckkopf-ansteuerschaltung fuer einen thermodrucker
DE3825232C1 (en)	1990-02-15	Method and circuit arrangement for producing information on the type of a print head
DE69906776T2 (de)	2004-03-11	Tintenstrahldrucksystem
DE69713811T2 (de)	2003-04-03	Steuerung für eine kontinuierlich arbeitende tintenstrahldruckersteuerung
DE2527948A1 (de)	1976-01-08	Tragbarer thermischer tischdrucker
DE69310220T2 (de)	1997-11-20	Treiberkreis für einen Wärmekopf