EP0645249B1 - Steuerschaltung für eine Thermodruckmaschine - Google Patents
Steuerschaltung für eine Thermodruckmaschine Download PDFInfo
- Publication number
- EP0645249B1 EP0645249B1 EP94113778A EP94113778A EP0645249B1 EP 0645249 B1 EP0645249 B1 EP 0645249B1 EP 94113778 A EP94113778 A EP 94113778A EP 94113778 A EP94113778 A EP 94113778A EP 0645249 B1 EP0645249 B1 EP 0645249B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- microprocessor
- buffer storage
- register
- control circuit
- 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.)
- Expired - Lifetime
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Images
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
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
- B41J2/3555—Historical control
-
- 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
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
Definitions
- the invention relates to a control circuit for a Thermal printing machine with a thermal print head with a row electrically controllable heating elements, with a microprocessor, the data to be printed on an associated with the thermal print head Register transmits that connected to the heating elements Drives circuits, the register the Receives data in serial form and the microprocessor (2) through a parallel data line with a buffer (15) is connected, the buffer (15) also with a separate state-of-charge control circuit (17) is connected is that with reaching a defined amount of Microprocessor (2) in the buffer (15) inscribed Data a transfer of data from the buffer (15) into register (13).
- thermal printing heads are found Use a series of individually electrically controllable Have heating elements. Between the heating elements and one Counter pressure roller is the record carrier to be printed and - if the latter is not thermally active - the effective one Arranged strand of a thermally activated ribbon, so that a current flowing through the heating elements is colored (usually blackening) of the record carrier has the consequence.
- the supply of the thermal printheads with the printing data is done in the prior art, such as from DE 36 13 946 A1 or EP 501 707 A2 has become known through a serial data line.
- the Data is thus transferred from one to the other by just one line Motherboard arranged microprocessor on the printhead transferred, there using a (sliding) register - each corresponding to a print line - parallelized and used for Control of the driver circuits of the heating elements.
- DE 3219383 A1 shows a device in a control device is connected to a memory, wherein a separate address counter is a data transfer from causes the buffer into the shift register if the meter has reached the end of the counter.
- a disadvantage of the above devices is the high Time required for serial data transmission: since thermal print heads Today's design mostly over 1000 heating elements and just as many Have register elements, it does not cause one Insignificant time delay, the data using the microprocessor to bring in serial form and to transmit sequentially. Because the microprocessor is not for during this time other tasks (such as arithmetic operations or controlling the Counter pressure roller) is available, he must then do so that the maximum printing speed in the result is not insignificantly reduced.
- the object of the present invention is the known To improve control circuits in that the Efficiency of the microprocessor improved and the feasible Print speed is increased.
- the object is achieved by a Microprocessor connected by a parallel data line Buffer and a separate state-of-charge control circuit which is connected to the buffer and with reaching a defined amount by the microprocessor in a transfer to the buffer of written data of data from the buffer into the register, where the microprocessor (2) during the transfer of data from the buffer (15) into the register (13) simultaneously Write data into the buffer (15) as soon as Free capacities in the buffer.
- the main idea is to use a microprocessor external memory and a state of charge control circuit too relieve pressure while ensuring that the microprocessor during the transfer of data from the buffer in the register write data into the buffer at the same time can, as soon as capacity becomes available there.
- the data are parallel from the microprocessor at high speed read into the buffer and then sequentially into that in a conventional manner Register of the thermal print head is transferred, the sequential The data is not transferred to the register the microprocessor, but through the separate state-of-charge control circuit is controlled.
- the latter monitors the Level, i.e. the proportion of the data to be printed with Storage and activates the transfer to the Register of the print head as soon as a specified value is exceeded is.
- the capacity of the buffer corresponds to usually that of the register of the thermal print head.
- Crucial is that the microprocessor after the transfer the data in the buffer for any other Tasks - like controlling printer mechanics or doing calculations data to be printed (bitmap) - is available, since he's no longer concerned with sequencing the data or is responsible for controlling the transfer.
- the invention enables the relief of the microprocessor by the state-of-charge control circuit a significant acceleration of the printing process.
- such a control enables the capacity of the cache for reasons of economy less than that of the register of the thermal print head select and the data of a print line successively in subsets from the microprocessor via the buffer into the Transfer register, on the other hand - which is preferred is - during the transfer of data from the microprocessor to write the register to the buffer at the same time.
- - which is preferred is - during the transfer of data from the microprocessor to write the register to the buffer at the same time.
- the advantageous consequence is the time saved through the simultaneous data transmissions that enable an increase in the printing speed.
- the primary storage comes under the name First-in-first-out known storage in question because it enables the data registered first, while maintaining the correct order also first in to transfer the register.
- a parallel to serial converter is connected to the buffer via a data bus in such a way that each have a data word from the same (first) memory area can be read out.
- the microprocessor writes the data of the first data word to be output (for example 16 bits) in this memory area.
- the microprocessor Pulse on (initially reset) counter pointer incremented.
- the following data words are based on the Written in the following memory areas, the counter pointer each after the registration of a Data word (for example 16 bits) incremented by one becomes.
- the buffer is thus filled successively.
- the fill level of the memory Based of the counter pointer recognizes the state of charge control circuit the fill level of the memory and activates when it is reached the defined amount the transfer of data to the Parallel-serial converter.
- the data of the first Memory area read out.
- the counter pointer is decremented and the Data from the following memories are word by word in copied the previous memory.
- the cache becomes dynamic like a queue (queue, first-in-first-out) managed.
- the data from the microprocessor always in the same memory to enter, successively move on and the address of the memory read out using the counter pointer determine.
- Modern thermal print heads such as those used in the EP 501 707 A2 are described, have an input for Pressure release signal with which the heating elements can be activated are. Because the latter is strong in continuous operation have a shorter lifespan, it proves necessary to chop the print release signal composed of individual impulses.
- a Pressure release signal consisting of an initial continuous pulse with subsequent rectangular pulses, from Advantage and therefore common.
- the duration of the impulses and the gaps defines the heating energy and thus the temperature of the heating elements.
- the corresponding output of the microprocessor and / or the state-of-charge control circuit with a circuit to be provided which generates the desired impulses.
- the microprocessor therefore only needs a pulse to activate it the circuit and immediately stands for others Tasks are available while the latter is the print release signal generated.
- the microprocessor is appropriate Data on the duration of the impulses and gaps in each case before printing a printed page on the circuit transfer. On the one hand, this makes it a sufficiently common one Adaptation to the current printing parameters possible, on the other hand the time required for the update keeps in Limits.
- the print release signal can be through the microprocessor and / or activated by the state-of-charge control circuit become. It should be noted that the printhead in general in addition to the print release signal, the previous ones Printing data and the data of the adjacent heating elements (the so-called dot history) when calculating the heating elements supplied energy is taken into account.
- thermal print head To provide temperature sensor and the latter at an input connect the microprocessor, so that the latter based on the temperature of the printhead the circuit for generating the pressure release signal by varying the duration that can control impulses and / or their gaps in such a way that on the one hand the maximum permissible temperature of the print head is not exceeded, on the other hand optimal printing results arise.
- the print release signal be varied by the microprocessor such that an optimal Adjustment of the temperature of the heating elements to the Print speed and / or the type of paper being printed he follows.
- the control circuit shown in Figure 1 for a thermal print head (1) has a microprocessor (2) to which one Control keyboard (3) connected as data entry option is.
- the microprocessor (2) is with a data input interface (4), with a read / write control (5), with a first pulse generator (6) with a circuit (7) for Generation of a pressure release signal and with a temperature sensor (8) for recording the temperature of the thermal print head (1) connected.
- the microprocessor also controls (2) a second pulse generator (9), which has a Stepper motor driver (10) to a stepper motor (11) for driving the counter pressure roller (12) is connected.
- a hint (13) is indicated in the thermal print head (1) drawn in, which has as much memory cells as the thermal print head (1) has heating elements (14).
- the present Embodiment can, for example, with a thermal print head (1) equipped with 1280 heating (14) and register elements (13) his.
- the core of the control circuit is a buffer (15), e.g. consists of 80 memory elements ... 16 bits.
- a buffer (15) e.g. consists of 80 memory elements ... 16 bits.
- Parallel-serial converter (16) are the data to be printed read into the register (13) of the thermal print head.
- the Clock pulses from the pulse generator (6) are the thermal print head (1) sent directly.
- the memory content of the Buffer (15) from a state of charge control circuit (17) monitors.
- the microprocessor (2) is added via the control keyboard (3) causes data in via the data input interface (4)
- the buffer (15) is read in by the State of charge control circuit (17) monitors how much storage space the buffer (15) is occupied. Already if a certain proportion of, for example, 30% has been described, is the state of charge control circuit (17)
- Read / write controller (5) causes data in the parallel-to-serial converter (16) read in and clocked by the first pulse generator (6) to register in the register (13). Parallel this is controlled by the read / write control (5) further data is read into the buffer (15).
- the circuit (7) from the microprocessor (2) causes a print release signal to the thermal print head (1) to send, so that the stored data on a record carrier (18) can be written.
- the second pulse generator (9) started, which now automatically via the stepper motor driver (10) Stepper motor (11) controls the counter-pressure roller (12) drives to transport the record carrier (18).
- a multicolor thermal printer is sketched schematically in FIG. next to the microprocessor (2), the second pulse generator (9), the stepper motor driver (10), the stepper motor (11), the counter pressure roller (12) and the thermal print head (1) a further pulse generator (19), a further stepper motor driver (20), another stepper motor (21), one another counter pressure roller (22) and another thermal print head (23).
- the temperature-sensitive recording medium (18) different temperatures with different colors.
- Multi-color printing can thus be realized in that the heating elements (14) of the two thermal print heads (1,23) to different Temperatures are heated and then the record carrier Print (18) one after the other.
- FIG 3 is the circuit (7) for generating the print release signal shown. It is controlled by the microprocessor (2) and consists of a first (24), a second (25) and a third rectangular pulse generator (26).
- the Output of the first rectangular pulse generator (24) is with the non-inverting inputs of a first (27) and the second AND gate (28) connected while the output of the second Rectangular pulse generator (25) on the non-inverting Input of the first AND gate (27) and a second AND gate (28) is connected.
- the outputs of the first AND gate (27) and the third rectangular pulse generator (26) are connected to the inputs of an OR gate (29), the delivers the pressure release signal via its output.
- the pulse diagram sketched in FIG. 4 gives the function the circuit (7) again.
- Both pulses (b) and (c) will firstly fed to the first AND gate (27), at the Output pulse (c) is present.
- the third Rectangular pulse generator (26) from this signal (b AND NOT c) is controlled, it generates the signals (d) that together with the signal (c) after an OR operation in the OR gate (29) give the print release signal (e).
- the microprocessor from the Thermal print head located temperature sensor (8) controlled. This causes the microprocessor (2) to the duration of the Pulse (c) in the second rectangular pulse generator (25) and that Duty cycle of the third generated by the rectangular pulse generator Signals (d) to vary such that the temperature the thermal print head (1) an optimal, uncritical value assumes.
- FIG. 5 shows the internal structure of a state-of-charge control circuit (17) and their connection with the remaining control circuit.
- the microprocessor's data bus (D) (2) is in this drawing directly with the clipboard (15) connected. The one that is only set to one when the data is output
- the microprocessor's write output (WR) is compatible with both Buffer (15) and with a counter (31) State of charge control circuit (17) connected. With everyone Writing process from the microprocessor (2) into the buffer (15) the output (A) of the counter pointer (31) is raised by one (incremented), hence its corresponding input marked with INC in the figure.
- the data words of the microprocessor (2) in the memory area of the buffer shown below (15) entered.
- the output (A) of the Counter pointer (31) has been incremented, the following ones Data in the bottom corresponding to its output (A) Memory cell subsequent address of the buffer (15) entered, the latter thus successively from below filled up.
- the data transfer from the buffer (15) to the parallel-serial converter (16) and in the register (13) of the thermal print head (1) is through the actual hardware control (32) controlled.
- the output (A) of the counter pointer (31) a fixed number (which corresponds to the defined amount of data, during which the reading process into the printhead (1) should start) is at the output (cpy) of the hardware control (32) an impulse representing a copy command and causes on the one hand the data word (D ') of the lowest Memory cell of the buffer (15) on the parallel-serial converter (16) and from there in serial form (D '') is transferred to the register (13), on the other hand the Data words of all other memory cells of the buffer (15) can be shifted down by one memory cell - therefore the output (cpy) with the buffer (15) and the parallel-serial converter (16).
- the Buffer (15) is thus successively in the register (13) read out.
- a pulse to the input (DEC) of the counter pointer (31) created that lowers its output (A) by one (decremented).
- the microprocessor now writes (2), is thus - as a memory cell free was - now filled the next lower.
- the hardware control (32) also activates a timer (33), on the Output (clk) are present when reading data, rectangular pulses, which as a clock for the parallel-serial converter (16) and that Register (13) serve.
- a synchronization of the hardware control (32) is required to prevent incrementing and a decrement signal is present at the counter pointer (31) - if at the same time the microprocessor (2) and the buffer (15) Data output and data in an incorrect Address of the buffer (15) can be entered.
- the Synchronization can be done in such a way that the hardware control (32) prevents the decrement command (DEC) as long as the write output (WR) of the microprocessor (2) to one lies.
- the decrement command (DEC) (and the copying process, in which the data words of all memory cells of the buffer (15) each shifted down by one memory cell after the microprocessor has finished writing (2) made up so that the output (A) of the Counter pointer (31) updated before the next write operation is. It is therefore possible to simultaneously store data in the buffer (15) read in and read out, since both processes at other addresses.
- the result is a control circuit for a printing press, which is characterized by high efficiency and printing speed distinguished.
Landscapes
- Electronic Switches (AREA)
Description
- Figur 1:
- eine Steuerschaltung für einen Thermodruckkopf;
- Figur 2:
- einen für Mehrfarbendruck vorteilhaften Antrieb der Gegendruckrollen;
- Figur 3:
- eine Schaltung zur Erzeugung des Druckfreigabesignales;
- Figur 4:
- ein Impulsdiagramm obiger Schaltung; und
- Figur 5:
- eine Ladezustandskontrollschaltung.
Claims (7)
- Steuerschaltung mit einem Mikroprozessor (2) für eine Thermodruckmaschine mit einem Thermodruckkopf (1) mit einer Reihe elektrisch ansteuerbarer Heizelemente (14), der auszudruckende Daten auf ein dem Thermodruckkopf (1) zugeordnetes Register (13) überträgt, das mit den Heizelementen (14) verbundene Treiberschaltungen ansteuert, wobei das Register (13) die Daten in serieller Form empfängt und der Mikroprozessor (2) durch eine parallele Datenteitung mit einem Zwischenspeicher (15) verbunden ist, wobei der Zwischenspeicher (15) auch mit einer separaten Ladezustandskontrollschaltung (17) verbunden ist, die mit dem Erreichen einer definierten Menge vom Mikroprozessor (2) in den Zwischenspeicher (15) eingeschriebener Daten eine Übertragung von Daten vom Zwischenspeicher (15) in das Register (13) veranlaßt, dadurch gekennzeichnet, daß der Mikroprozessor (2) wahrend der Übertragung von Daten aus dem Zwischenspeicher (15) in das Register (13) gleichzeitig Daten in den Zwischenspeicher (15) einschreibt, sobald Kapazitäten in dem Zwischenspeicher frei werden.
- Steuerschaltung nach Anspruch 1,
dadurch gekennzeichnet, daß die zur Veranlassung der Datenübertragung aus dem Zwischenspeicher (15) in das Register (13) notwendige, definierte Menge an Daten geringer ist als die zur Ansteuerung der gesamten Reihe der Heizelemente (14) erforderliche Datenmenge. - Steuerschaltung nach einem der Ansprüche 1 bis 2,
dadurch gekennzeichnet, daß der Mikroprozessor (2) den Zwischenspeicher (15) nach der Übertragung von Daten zur Ansteuerung einer vollständigen Reihe der Heizelemente (14) zunächst nicht mit Daten beaufschlagt, jedoch mit der Übertragung der Daten der nachfolgenden Reihe beginnt, nachdem zumindest ein Teil der Daten aus dem Zwischenspeicher (15) in das Register (13) übertragen ist. - Steuerschaltung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß der Zwischenspeicher (15) ein First-in-First-out-Speicher ist. - Steuerschaltung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß der Mikroprozessor (2) und/oder die Ladezustandskontrollschaltung (17) einen Ausgang aufweist, der mit einem Eingang des Druckkopfes (1) für ein Druckfreigabesignal (e) zur Aktivierung der Heizelemente (14) durch eine Schaltung (7) verbunden ist, die ein Signal erzeugt, das aus einem anfänglichen Dauerimpuls mit sich daran anschließenden höherfrequenten Rechteckimpulsen besteht. - Steuerschaltung nach Anspruch 5,
dadurch gekennzeichnet, daß der Thermodruckkopf (1) einen mit dem Mikroprozessor (2) verbundenen Temperatursensor (8) aufweist, und daß der Mikroprozessor (2) die Dauer der Impulse und/oder der Zwischenräume zwischen den Impulsen der Schaltung (7) in Abhängigkeit vom Ausgangssignal des Temperatursensors (8) variiert. - Steuerschaltung nach Anspruch 5 oder 6,
dadurch gekennzeichnet, daß der Mikroprozessor (2) die Dauer der Impulse und/oder der Zwischenräume zwischen den Impulsen in Abhängigkeit von der Druckgeschwindigkeit und/oder der Art des bedruckten Papiers variiert.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4332572 | 1993-09-24 | ||
DE4332572A DE4332572A1 (de) | 1993-09-24 | 1993-09-24 | Steuerschaltung für mindestens einen Thermodruckkopf |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0645249A2 EP0645249A2 (de) | 1995-03-29 |
EP0645249A3 EP0645249A3 (de) | 1997-10-22 |
EP0645249B1 true EP0645249B1 (de) | 2001-11-28 |
Family
ID=6498544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113778A Expired - Lifetime EP0645249B1 (de) | 1993-09-24 | 1994-09-02 | Steuerschaltung für eine Thermodruckmaschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US5559547A (de) |
EP (1) | EP0645249B1 (de) |
JP (1) | JPH07205467A (de) |
AU (1) | AU673284B2 (de) |
DE (2) | DE4332572A1 (de) |
DK (1) | DK0645249T3 (de) |
ES (1) | ES2169056T3 (de) |
SG (1) | SG74555A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5777657A (en) * | 1994-10-14 | 1998-07-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Thermal printer and thermal printer head driving system |
JPH08276572A (ja) * | 1995-04-07 | 1996-10-22 | Sharp Corp | インクジェットプリンター、及び、インクジェットプリンターの調整方法 |
US6106172A (en) * | 1998-02-24 | 2000-08-22 | Eastman Kodak Company | Method and printer utilizing a single microprocessor to modulate a printhead and implement printing functions |
US6476928B1 (en) * | 1999-02-19 | 2002-11-05 | Hewlett-Packard Co. | System and method for controlling internal operations of a processor of an inkjet printhead |
AU4711601A (en) * | 1999-12-10 | 2001-07-03 | United Video Properties, Inc. | Systems and methods for coordinating interactive and passive advertisement and merchandising opportunities |
US6404452B1 (en) | 2000-08-03 | 2002-06-11 | Axiohm Transaction Solutions, Inc. | Auxiliary control device for managing printing in a thermal printer |
US6570602B1 (en) | 2002-02-06 | 2003-05-27 | Brady Worldwide, Inc. | Generating and storing supply specific printing parameters |
US6788325B2 (en) | 2002-02-06 | 2004-09-07 | Brady Worldwide, Inc. | Processing multiple thermal elements with a fast algorithm using dot history |
US6991130B2 (en) * | 2002-09-13 | 2006-01-31 | Avery Dennison Corporation | Versatile label sheet and dispenser |
US7128236B2 (en) * | 2002-09-13 | 2006-10-31 | Avery Dennison Corporation | Versatile label sheet and dispenser |
FR2915130B1 (fr) * | 2007-04-19 | 2010-08-20 | A P S Engineering | Moyens de commande, element electronique et carte de controle pour fonctionnement d'un mecanisme d'impression thermique. |
US9416652B2 (en) | 2013-08-08 | 2016-08-16 | Vetco Gray Inc. | Sensing magnetized portions of a wellhead system to monitor fatigue loading |
US9288521B2 (en) | 2014-05-28 | 2016-03-15 | Rovi Guides, Inc. | Systems and methods for updating media asset data based on pause point in the media asset |
KR102035784B1 (ko) * | 2018-01-29 | 2019-10-24 | 주식회사 디원씨앤아이 | 인쇄속도 증가를 위한 방법 및 인쇄장치 |
CN111923606B (zh) * | 2020-06-30 | 2022-03-29 | 厦门汉印电子技术有限公司 | 一种打印机 |
Family Cites Families (13)
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US4809021B1 (en) * | 1978-07-07 | 1994-09-27 | Pitney Bowes Inc | Apparatus and method for generating images by producing light spots of different sizes |
US4415907A (en) * | 1980-11-07 | 1983-11-15 | Hitachi, Ltd. | Printing pulse control circuit for thermal printing head |
DE3273429D1 (en) * | 1981-06-19 | 1986-10-30 | Toshiba Kk | Thermal printer |
JPS5884777A (ja) * | 1981-11-13 | 1983-05-20 | Canon Inc | 多色印字装置 |
GB2121359B (en) * | 1982-05-11 | 1985-09-04 | Tokyo Shibaura Electric Co | Thermal transfer recording apparatus |
DE3219383A1 (de) * | 1982-05-24 | 1983-11-24 | Hellige Gmbh, 7800 Freiburg | Verfahren und vorrichtung zur ansteuerung von thermoschreibern in registriergeraeten |
JPS6083864A (ja) * | 1983-10-17 | 1985-05-13 | Fuji Xerox Co Ltd | 多色記録装置 |
JPS61206663A (ja) * | 1985-03-12 | 1986-09-12 | Tokyo Electric Co Ltd | サ−マルプリンタにおける印字方法 |
CN86101096A (zh) * | 1985-04-26 | 1986-10-22 | 株式会社岛津制作所 | 印字绘图器 |
US4675695A (en) * | 1985-12-13 | 1987-06-23 | Intermec Corporation | Method and apparatus for temperature control in thermal printers |
US4845514A (en) * | 1986-09-19 | 1989-07-04 | Shinko Electric Co., Ltd. | Thermal transfer type line printer capable of setting printing density by command supplied from an external device |
JP3041913B2 (ja) * | 1990-09-03 | 2000-05-15 | 株式会社リコー | 感熱記録方法 |
EP0501707B1 (de) * | 1991-02-26 | 1996-07-03 | Rohm Co., Ltd. | Steuervorrichtung für Thermo-Druckkopf |
-
1993
- 1993-09-24 DE DE4332572A patent/DE4332572A1/de not_active Withdrawn
-
1994
- 1994-09-02 DK DK94113778T patent/DK0645249T3/da active
- 1994-09-02 EP EP94113778A patent/EP0645249B1/de not_active Expired - Lifetime
- 1994-09-02 DE DE59409974T patent/DE59409974D1/de not_active Expired - Fee Related
- 1994-09-02 ES ES94113778T patent/ES2169056T3/es not_active Expired - Lifetime
- 1994-09-02 SG SG1996007286A patent/SG74555A1/en unknown
- 1994-09-15 AU AU72995/94A patent/AU673284B2/en not_active Ceased
- 1994-09-22 JP JP22823694A patent/JPH07205467A/ja active Pending
- 1994-09-23 US US08/311,778 patent/US5559547A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4332572A1 (de) | 1995-03-30 |
JPH07205467A (ja) | 1995-08-08 |
AU7299594A (en) | 1995-04-06 |
EP0645249A3 (de) | 1997-10-22 |
DK0645249T3 (da) | 2002-03-11 |
EP0645249A2 (de) | 1995-03-29 |
ES2169056T3 (es) | 2002-07-01 |
SG74555A1 (en) | 2000-08-22 |
DE59409974D1 (de) | 2002-01-10 |
AU673284B2 (en) | 1996-10-31 |
US5559547A (en) | 1996-09-24 |
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