KR20000021823A - Reset method of printer and apparatus thereof - Google Patents

Abstract

PURPOSE: A reset method of a printer is provided to delete present printing operation by adding an additional reset circuit to a GDI(Graphic Display Interface) without a central processing unit. CONSTITUTION: A reset device of a printer is composed of: an operation panel(103) having many arranged function keys; a memory storing printing data transmitted from an outer device; a graphic interface part(101) for transmitting the stored printing data to an engine of a printer; a reset key placed on the operation panel to be operated by a user; and a reset unit(106) for outputting a certain control signal to the graphic interface part according to the input of the reset key. Herein, the graphic interface part is input with the control signal output from the reset part by corresponding to the input state of the reset key, stops printing operation and deletes the printing data stored in the memory. Thereby, the printing work can be reset by using the reset key of the printer.

Description

Printer reset method and device

The present invention relates to a method for resetting a printer and a device thereof, and more particularly to a graphic display interface (GDI) printer in which a central processing unit is not incorporated, so that a print circuit that is currently being printed can be deleted by adding a reset circuit. A method of resetting a printer and an apparatus thereof are provided.

In general, a representative printer of an image forming apparatus is an apparatus for printing a document or image data created by an application program in a computer. Such printers are generally classified into models having a built-in central processing unit and models (GDI models) directly controlled by an associated computer without a built-in central processing unit. Then, the printer receives the document or image data from the computer and performs a print job according to a program preset in the firmware. The printer is generally operated in conjunction with a computer, and thus the printer driver is essentially included in the computer.

In the conventional GDI printer, the main power source must be shut off to stop the current print job. That is, since the graphic interface unit embedded in the GDI printer is not assigned a separate input terminal for receiving a separate key manipulation signal, the graphic interface unit cannot be arbitrarily reset by the user without shutting off the main power.

However, according to such a conventional GDI printer, the following problems occur.

First, in order to terminate the current print job, the main power supply must be cut off, which causes inconvenience in that other waiting print jobs are reset.

Secondly, if the printing job is continuously performed in order to prevent the above first problem, printing paper is wasted.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to add a separate reset circuit to a GDI printer that does not have a central processing unit, and to reset a printer to delete a print job currently being performed. In providing.

In addition, another object of the present invention to provide a reset device of the printer for achieving the first object above.

1 is a schematic block diagram of a GDI printer according to the present invention;

2 is a plan view of the operation panel shown in FIG.

3 is a detailed circuit diagram of the reset unit illustrated in FIG. 1;

4 is an operation flowchart showing a process of resetting the printer according to the present invention;

5 is an operation waveform diagram of each component illustrated in FIG. 3.

<Description of the code | symbol about the principal part of drawing>

100: printer 101: graphical interface

102: engine controller 103: operation panel

103a: reset key 104: ram

105: ROM 106: Reset unit

200: computer 201, 205: logical product

202, 206: inverter 203: time constant circuit

204, 207: delay element

A feature of the present invention for achieving the above object is, in the printer of the GDI (Graphic Display Interface) method that is provided with a reset key, and performs a print job under the control of the external device: Print data transmitted from the external device Storing in storage means; Performing a print job of printing the print data stored in the storage means; Checking whether the reset signal is inputted by the reset key; When the reset signal is inputted, the print job is terminated and the print data stored in the storage means is deleted.

Here, the reset signal is input when the reset key is continuously input for a predetermined time or more.

On the other hand, another feature of the present invention, the operation panel is arranged a plurality of function keys, a storage means for storing the print data transmitted from the external device, and a graphic interface unit for transmitting the print data stored in the storage means to the printer engine And a GDI (Graphic Display Interface) type printer for performing a print job under the control of an external device, the printer comprising: a reset key mounted on an operation panel to be operated by a user; A reset unit for outputting a predetermined control signal to the graphic interface unit according to whether the reset key is input or not; The graphic interface unit receives a control signal output from the reset unit in response to an input state of the reset key, stops the print job, and deletes the print data stored in the storage unit.

Here, the reset unit comprises: first discriminating means for determining whether the reset key is input; First delay means for outputting a predetermined logic signal according to a determination result of the first discriminating means, the first logic signal being sustained for a predetermined first delay time and outputting the predetermined logic signal; Second judging means for judging whether the reset key has been continuously input for a predetermined first delay time or more through the first logic signal output from the first delay means; And second delay means for outputting a predetermined second logic signal according to the discrimination result of the second discrimination means, and continuing to output the second logic signal for a predetermined time.

In this case, in the first discriminating means, the first input terminal of the first logical multiplication device is integrally connected with the constant voltage so that the constant voltage supplied from the constant voltage source is input to the first input terminal of the first logical multiplication device, and the constant voltage supplied from the constant voltage source is reset. The reset key and the first inverter are connected in parallel with respect to the constant voltage to be selectively supplied to any one of the key and the first inverter, and the output terminal of the first inverter is connected to the second input terminal of the first AND product, The logic " high " is continuously input to the first input terminal of the device, and the logic " high " state is input only to the interval where the reset key is input to the second input terminal of the first logical product.

The first delay means inverts the logic state of the first logical multiplication device at the time when the output signal of the first logical multiplication device is received, and outputs the first delay time in which the first reversal output of the first delaying means is preset. Is maintained for a while and then reversed.

The second discriminating means includes: a time constant circuit for delaying a logic signal according to whether the reset key is input for a predetermined time; A second inverter for inverting the logic signal delayed by the time constant circuit; A second AND product for performing an AND operation on the first inverted output output from the first delay means and the inverted logic signal output from the second inverter; As the reset key is input, a logic "low" signal is supplied to the time constant circuit, and a signal inverted to a logic "high" state is supplied to the second logical multiplication device through the second inverter. The first inverted output delayed for the first delay time in the first delay time is compared with the input time of the reset key from the input time of the reset key, and the output of the second logical multiplication device only when the reset key is input for more than the first predetermined delay time. By inverting this logic to a "high" state, it is determined whether the input time of the reset key exceeds the first delay time.

The second delay means inverts the logic state of the second logical multiplication device at the time when the output signal of the second logical multiplication device is received, and outputs the second delay time in which the second inverted output of the second delay means is preset. Is maintained for a while and then reversed.

In this case, when the second inverted output signal output from the second delay means is provided to the graphic interface unit, the second delay time may cause the graphic interface unit to switch to the reset mode according to the second inversion signal. It is time to fully recognize the inverted output signal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are displayed on different drawings. In addition, in the following description, many specific details are shown, such as specific blocks or components of circuits, which are provided to help a more general understanding of the present invention, and the present invention may be practiced even if these specific details are removed or modified. It will be obvious to those of ordinary skill in the art. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 shows a schematic block diagram of a GDI printer according to the present invention, FIG. 2 shows a plan view of the operation panel shown in FIG. 1, and FIG. 3 shows a detailed circuit diagram of the reset unit shown in FIG. 4 is a flowchart illustrating an operation of the method of resetting the printer according to the present invention, and FIG. 5 is a waveform diagram of each component shown in FIG. 3.

Referring to FIG. 1, first, a printer 100 is connected to communicate with a computer 200.

The graphic interface unit 101 serves to interface print data between the printer 100 and the computer 200. At this time, the graphic interface unit 101 does not have a built-in central processing unit. That is, a job of converting image data to be printed into an image and other image processing operations is performed by the computer 200, and the graphic interface unit 101 serves to interface images processed by the computer 200. .

The engine controller 102 controls the overall driving state of the printer engine (not shown) to print the print data.

The operation panel (OPE) 103 includes a plurality of keys to generate key data of the printer 100, and transmits them to the graphic interface unit 101 when key data is generated, A plurality of display elements (LEDs) are included to display the driving state. In particular, the operation panel 103 is configured with a reset key 103a capable of resetting the print job (see Fig. 2).

The RAM 104 temporarily stores the print data transmitted from the computer 200. At this time, the print data transmitted from the computer 200 is stored in band units, and the stored print data is transmitted to the engine controller 102 in band units to perform a print job.

The ROM 105 stores various program data for driving the printer 100, and stores various information about the printer 100 such as a printer model name (eg, a GDI model).

The reset unit 106 outputs a control signal to the graphic interface unit 101 according to the input state of the preset reset key 103a among the key data input from the operation panel 103. That is, when it is determined that the reset key 103a is input through the operation panel 103, the reset unit 106 resets the graphic interface unit 101, thereby terminating the print job currently in progress.

Meanwhile, the detailed configuration of the reset unit 106 will be described with reference to FIG. 3.

Referring to FIG. 3, the constant voltage Vcc supplied from the constant voltage source is supplied to the input terminal of the first AND product 201 through the bias resistor R2, and the reset key 103a and the bias key R1 are connected to each other. The resistors R3 in the first inverter 202 and the time constant circuit 203 are respectively supplied.

In addition, the output of the first inverter 202 is supplied to the input terminal of the first logical multiplication device 201, the output of the first logical multiplication device 201 is supplied to the first delay element 204. Then, the inverted output of the first delay element 204 ( ) Is supplied to the input terminal of the second logical multiplication device 205, and the signal delayed by the time constant circuit 203 is supplied to the input terminal of the second logical multiplication device 205 through the second inverter 206. In addition, the output of the second AND product 205 is input to the second delay element 207, and the inverted output of the second delay element 207 ) Is provided to the graphic interface unit 101.

Referring to Figures 4 and 5 with respect to the operation of the present invention having such a configuration as follows.

When a print command is received from the computer 200 (S101), the engine controller 102 warms up the printer engine and then switches to the print standby state. Thereafter, when print data is transmitted from the computer 200, the print data is transmitted to the graphic interface unit 101, and the graphic interface unit 101 temporarily stores the print data transmitted from the computer 200 to the RAM 104. Save it. The print data stored in the RAM 104 is transmitted to the engine controller 102 in units of a predetermined amount (for example, a band), and thus a print job is performed (S102).

Thereafter, the graphic interface unit 101 checks whether the reset signal is input from the reset unit 106 (S103). Here, it is possible to check whether the reset signal is input by the reset unit 106 as shown in FIG. 3.

That is, as shown in FIG. 3, when the user does not operate the reset key 103a of the operation panel 103, the input P1 of the first AND device 201 maintains a logic “high” state. The input P3 of the first AND product 201 via the first inverter 202 remains in a logic " low " state. Thus, the output P4 of the first AND product 201 becomes a logic "low". The output of the first logical product 201 in the logic " low " state input to the first delay element 204 is inverted to a logic " high " state by the first delay element 204 and output.

On the other hand, the constant voltage Vcc supplied from the constant voltage source is delayed for a predetermined time by the time constant circuit 203 (P6), and after passing through the second inverter 206, the logic signal of the logic " low " state is the second logic. It is input to the product element 205 (P7).

The second AND product 205 performs a logic operation on the two input signals P5 and P7 to output a logic signal P8 in a logic "low" state, and the output signal in the logic "low" state is a second delay element 207. Is inputted to the graphic interface unit 101 via P9). At this time, the second delay element 207 inverts the output of the second AND product 205 and outputs it. Therefore, the graphic interface unit 101 performs a normal print job.

Thereafter, if it is determined that the reset signal is not input in step 103 (S103), the graphic interface unit 101 checks whether or not a command indicating that the print job is completed is received from the computer 200 (S104). When all the commands have been received, the process is terminated. If no commands have been received, the process returns to step 103 (S103) to check whether or not the reset signal is input.

3, when the user continuously operates the reset key 103a of the operation panel 103 for a predetermined first delay time (for example, 3 seconds) or more, the first logical multiplication device 201 ) Input P1 maintains a logic "high" state, and the input P3 of the first AND product 201 via the first inverter 202 maintains a logic "high" state. Therefore, the output P4 of the first AND product 201 becomes a logic " high. &Quot; The output P4 of the first logical product 201 in the logic " high " state input to the first delay element 204 is inverted to the logic " low " state by the first delay element 204, and this inverted output ( ) P5 is maintained for a preset first delay time (eg, 3 seconds) and then restored to its original state (logic "high" state). In this case, the first delay time refers to the time for which the user must continuously input the reset key 103a in order to reset the print job of the printer 100. Here, it is assumed that the first delay time is set to 3 seconds.

On the other hand, the constant voltage Vcc supplied from the constant voltage source is passed to the ground through the reset key 103a, and the voltage charged in the capacitor C1 in the time constant circuit 203 is discharged and supplied to the second inverter 206. The discharge voltage of the capacitor C1 supplied to the second inverter 206 is completely discharged as time passes, so that the input of the second inverter 206 becomes a logic "low" state. Accordingly, the output P7 of the second inverter 206 inverts to a logic "high" state.

The second AND product 205 logically operates two input signals P5 and P7 and outputs the result thereof (see FIG. 5H), after the output signal is inverted by the second delay element 207. It is input to the graphic interface unit 101. At this time, this inversion output ) Is restored to its original state after its output state is maintained for a second delay time during which the system, ie, the graphic interface unit 101, can sufficiently recognize the input of the reset signal. Accordingly, the graphic interface unit 101 may recognize that the reset signal is input.

On the other hand, if it is determined in step 103 (S103) that the reset signal is input, the graphic interface unit 101 stops the print job for the print data via the engine controller 102, and then stored in the RAM 104 The print data is deleted (S105). After that, when all the print data stored in the RAM 104 is deleted (S106), all the processing ends. Therefore, the print job can be directly reset using the reset key 103a of the printer 100.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As a result, according to the method and apparatus for resetting the printer according to the present invention, the following advantages occur.

In other words, by adding a separate reset circuit to a GDI printer that does not have a built-in central processing unit, stops the print job as the reset key is input, and then deletes the print data. Can be reset.

Claims (9)

In a printer with a GDI (Graphic Display Interface) method, in which a reset key is installed and prints under the control of an external device: Storing the print data transmitted from the external device in a storage means; Performing a print job of printing the print data stored in the storage means; Checking whether a reset signal is inputted by the reset key; And And terminating the print job when the reset signal is input, and deleting the print data stored in the storage means. The method of claim 1, wherein the checking of whether the reset signal is inputted comprises: And the reset signal is input when the reset key is continuously input for a predetermined time or more. A control panel arranged with a plurality of function keys, storage means for storing print data transmitted from an external device, and a graphic interface for transmitting the print data stored in the storage means to a printer engine, the control of the external device In the printer of the GDI (Graphic Display Interface) method which performs the printing operation according to A reset key mounted on the operation panel to be operated by a user; And A reset unit for outputting a predetermined control signal to the graphic interface unit according to whether the reset key is input or not; The graphic interface unit receives a control signal output from the reset unit in response to an input state of the reset key to stop the print job and to delete the print data stored in the storage unit. Reset device. The method of claim 3, wherein the reset unit, First judging means for judging whether the reset key is input; First delay means for outputting a predetermined logic signal in accordance with the determination result of the first discriminating means, and continuing and outputting the first logic signal for a predetermined first delay time; Second discriminating means for discriminating whether or not the reset key is continuously input for more than a predetermined first delay time through the first logic signal outputted from the first delay means; And And second delay means for outputting a predetermined second logic signal according to the determination result of the second discrimination means, and continuing to output the second logic signal for a predetermined time. . The method of claim 4, wherein the first determination means, The first input terminal of the first logical multiplication device is integrally connected with a constant voltage so that the constant voltage supplied from the constant voltage source is input to the first input terminal of the first logical multiplication device, and the constant voltage supplied from the constant voltage source is the reset key and the first input terminal. The reset key and the first inverter are connected in parallel with respect to the constant voltage to be selectively supplied to any one of the inverters, and an output terminal of the first inverter is connected to a second input terminal of the first logical multiplication device, A logic "high" is continuously input to the first input terminal of the first logical multiplication device, and a logic "high" state is input to the second input terminal of the first logical multiplication device only in a section where the reset key is input. Reset device for the printer. The method of claim 5, wherein the first delay means, When the output signal of the first logical AND device is received, the logic state of the first logical AND device is inverted and outputted, wherein the first inverted output of the first delay means is maintained for the preset first delay time. Reset device of the printer, characterized in that the reversal after. The method of claim 6, wherein the second determination means, A time constant circuit for delaying a logic signal according to whether the reset key is input for a predetermined time; A second inverter for inverting the logic signal delayed output by the time constant circuit; And A second AND product for performing an AND operation on the first inverted output output from the first delay means and the inverted logic signal output from the second inverter; As the reset key is input, a logic "low" signal is supplied to the time constant circuit, and a signal inverted to a logic "high" state through the second inverter is supplied to the second logical multiplication device. The logical AND device compares an input time of a reset key from an input time of the reset key and the first inverted output delayed for the first delay time in the first delay element, and the reset key is greater than or equal to the preset first delay time. Wherein the output of the second logical product is inverted to a logic " high " state only when inputted, thereby determining whether the input time of the reset key exceeds the first delay time. . The method of claim 7, wherein the second delay means, When the output signal of the second logical AND device is received, the logic state of the second logical AND device is inverted and outputted, wherein the second inverted output of the second delay means is maintained for the preset second delay time. Reset device of the printer, characterized in that the reversal after. The method of claim 8, wherein the second delay time, When the second inverted output signal output from the second delay means is provided to the graphic interface unit, the graphic interface unit switches the second inversion so that the graphic interface unit switches to a reset mode according to the second inversion signal. A reset device for a printer, characterized in that it is time to fully recognize an output signal.