JP2001047696A - Printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable determining of the advisability of performing a process to switch an emulating according to assigned emulation starting conditions. SOLUTION: In the printing device which is capable of printing through a plurality of emulations and assigning conditions for starting an emulation for printing process by an emulation switching command for switching an emulation and starting the emulation to perform printing, CPU 2 decides whether the conditions, for starting the emulation, assigned by the emulation switching command received are the same as those for starting an emulation which is presently active.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a laser printer,
The present invention relates to a printing apparatus such as an ink jet printer, and more particularly to a control technique for performing printing by switching a plurality of emulations.

[0002]

2. Description of the Related Art Conventionally, when printing is performed by switching a plurality of emulations, when printing data is transferred from a host using a dedicated printer driver, usually, printing is usually performed.
At the beginning of the data, the conditions for starting the emulation for performing the printing process (emulation type and switch N
o. Or, the program number registered in advance. There is data of the emulation switching command that specifies ().
With this command, first, emulation for performing a printing process is started. At present, when the host OS is Windows or in an environment using a network, the above-described printing method is mainly used.

When print data is transferred without using a dedicated printer driver, the above-mentioned command does not exist in the data. Therefore, activation of emulation must be designated by an operation panel before printing. In this case, compared to the above-described environment, it can be said that the environment is not suitable for printing by switching a plurality of users and emulation.

[0004]

In the former case, every time the print data is transferred, the print data is transferred according to the emulation start condition specified by the emulation switching command.
Emulation switching processing is performed. At this time, the emulation switching process (restart) is performed even if the emulation start condition specified by the command is the same as the emulation start condition currently being started.

[0005] For this reason, while the process of switching the emulation is performed, the analysis of the received print data is not performed. There was a problem that the printing speed was slow.

In order to solve this problem, there is printing by the latter method. However, this is done by setting the printer on the operation panel of the printer instead of using a dedicated printer driver on the host side. Therefore, when a plurality of users use it, or when a plurality of emulations are switched to perform a printing process, a lot of trouble is required in operation, and it can be said that it is not suitable for an environment using a network at all.

In the former case, if there is no emulation or program that satisfies the emulation start conditions specified by the command, the emulation cannot be switched, and the emulation currently started processes subsequent drawing data. become.

At this time, since the data is not the command data of this emulation, the print result is not normal. Depending on the amount of data, this abnormal print content may be output on multiple sheets, resulting in wasted paper. In some cases, data remains in the reception buffer, and data received thereafter cannot be processed normally.

In order to solve this problem, it is necessary to check the settings of the printer to see if there is an emulation that matches the printing conditions before data transfer or a program in which the printing conditions are registered in advance. Requires labor of operation. In addition, there is a method of canceling a job after data transfer, but requires an operation for executing the job. In addition, this is often noticed after a plurality of abnormal print contents have been output as described above, resulting in wasteful use of paper.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a printing apparatus capable of determining whether emulation switching processing should be performed in accordance with designated emulation activation conditions.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, an emulation switching command for switching a plurality of emulations is used to specify an emulation start condition for performing a printing process. In a printing apparatus that starts emulation and performs printing, the printing apparatus includes a determination unit configured to determine whether an emulation start condition specified by a received emulation switching command is the same as a start condition of a currently activated emulation. I do.

According to another aspect of the present invention, the above object is achieved.
According to the present invention, in the printing apparatus according to the first aspect, when the activation condition of the currently activated emulation is the same as the emulation activation condition specified by the emulation switching command, the emulation switching process is not performed. It is characterized by doing.

[0013] To achieve the above object, a third aspect of the present invention is provided.
According to a second aspect of the present invention, in the printing apparatus according to the second aspect, when the printing conditions are changed by the operation panel after the currently activated emulation is activated, the emulation is performed according to the emulation activation conditions specified by the emulation switching command. A switching process is performed.

According to another aspect of the present invention, the above object is achieved.
According to an embodiment of the present invention, in the printing apparatus according to claim 1 or 2, a mode in which emulation switching processing is performed by comparing an emulation activation condition specified by an emulation switching command with an emulation activation condition currently being activated. Alternatively, it is possible to select a mode in which emulation switching processing is always performed according to an emulation start condition specified by an emulation switching command.

According to another aspect of the present invention, the above object is achieved.
According to a second aspect of the present invention, in the printing apparatus according to the second aspect, when the emulation switching process is not performed, a user error is reset.

According to another aspect of the present invention, there is provided a semiconductor device comprising:
According to the present invention, when the emulation switching processing is not performed in the printing apparatus according to the fifth aspect, a message to that effect is displayed on the operation panel.

According to another aspect of the present invention, there is provided a semiconductor device comprising:
In the described invention, an emulation switching command for switching a plurality of emulations specifies an emulation start condition for performing a printing process, and a printing apparatus that starts the emulation and performs printing is specified by a received emulation switching command. The emulation during startup determines whether or not there is an emulation and a program that meet the emulation startup conditions.

According to another aspect of the present invention, there is provided a computer system comprising:
According to the present invention, in the printing apparatus according to the seventh aspect, if there is no emulation or program that satisfies the emulation start condition specified by the emulation switching command, the subsequent drawing data is canceled.

According to another aspect of the present invention, there is provided a semiconductor device comprising:
According to the present invention, in the printing apparatus according to the eighth aspect, when the same emulation as the emulation type specified by the emulation switching command exists, the emulation is activated.

Further, in order to achieve the above object, the present invention provides the first aspect.
The invention according to claim 0 is characterized in that, in the printing apparatus according to claim 8, the fact that the job of the drawing data has been canceled is displayed as a message on the operation panel.

According to the first aspect of the present invention, it is determined whether or not the emulation start condition specified by the received emulation switching command is the same as the emulation start condition currently being started. Therefore, emulation is started in accordance with the specified start condition. It is optimally determined whether to perform the switching process.

According to the second aspect of the present invention, if the activation condition of the emulation currently activated and the activation condition of the emulation specified by the emulation switching command are the same, the emulation switching process is not performed. There is no delay in printing speed.

According to the third aspect of the present invention, when the printing conditions are changed by the operation panel after the currently activated emulation is activated, the emulation switching processing is performed in accordance with the emulation activation conditions specified by the emulation switching command. Therefore, users who use the dedicated printer driver and other (non-dedicated) printer drivers share (mix) and print normally.

According to the fourth aspect of the present invention, the emulation start condition specified by the emulation switch command is compared with the emulation start condition of the currently activated emulation, and the emulation switching process is performed, or emulation switching is always performed. Since any one of the modes for performing the emulation switching process can be selected in accordance with the emulation start condition specified by the command, printing is performed in accordance with the operating environment of the user.

According to the fifth aspect of the invention, when the emulation switching process is not performed, the user error is reset, so that there is no error, and normal printing is always performed.

According to the present invention, when the emulation switching process is not performed, a message to that effect is displayed on the operation panel, so that it can be confirmed that no error remains without printing a summary sheet. .

According to the seventh aspect of the present invention, the emulation during startup determines whether there is an emulation and a program that meet the emulation start condition specified by the received emulation switching command. It is optimally determined whether emulation switching processing should be performed.

According to the present invention, if there is no emulation or program that satisfies the emulation start condition specified by the emulation switching command, the job of the subsequent drawing data is cancelled. It can be processed normally.

According to the ninth aspect of the present invention, there is no emulation or program that satisfies the specified activation condition, but if there is an emulation that satisfies the specified emulation type, the emulation and the activation are performed according to the activation condition of the emulation. As a result, the drawing data can be printed, and the drawing data transferred thereafter can be normally processed.

According to the tenth aspect of the present invention, the fact that the job of the drawing data has been canceled is displayed on the operation panel as a message, so that it is possible to confirm that there is no emulation that meets the designated activation condition.

[0031]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of the printing apparatus. The printing device has firmware (ROM) 1,
CPU 2, work memory (RAM) 3, NVRAM 4,
A printing unit 5, a display unit (operation panel) 6, and a host I / F 7 are provided.

FIG. 2 is a diagram showing an example of emulation switching command data, FIG. 3 is a diagram showing information on emulation start conditions, FIG. 4 is a diagram showing an example of command data specifying emulation switching, and FIG. FIG. 7A is a diagram showing an emulation start condition (a) and an start condition (b) specified by an emulation switching command.

A first embodiment according to the present invention will be described. As shown in FIG. 3, the starting conditions of the emulation currently being started include the type of emulation and the switch No. The same information is stored in the work memory 3. Switch No. Is a number indicating the order of registration when the setting contents of the printing conditions of the same emulation are registered in the program.

Here, as an operation example, when the activation condition of the currently activated emulation has the contents shown in FIG.
When the command data having the contents shown in FIG. 4 is received and processed in accordance with the grammar of the command data shown in FIG. 2, the activation conditions specified by the command are as shown in FIG. 5B.
As a result, it is possible to compare the activation condition of the emulation being activated with the activation condition specified by the previous command.

FIG. 12 is a flowchart showing a first control example. It is determined whether there is data in the reception buffer (S1), and if not, other processing is performed (S1).
2). If there is data, the command is analyzed and processed (S3), and it is determined whether emulation switching is specified (S4). If not specified, other command processing is performed (S5). If so, it is determined whether the specified emulation start condition is the same as the emulation start condition being started (S6). If not the same
Emulation switching processing is performed (S7).

A second embodiment corresponding to the second aspect of the present invention will be described. Even when the emulation start condition specified by the emulation switch command is the same as the emulation start condition that is currently being started, if the emulation switch processing is performed, the printing speed is reduced.

Therefore, in the second embodiment, FIG.
When the activation conditions in (b) are compared, the same activation condition is obtained, so that the emulation switching process by the designation of the previous command is not performed (see FIG. 12).

FIG. 6 is a diagram showing an example of the printing condition information in the activated state, and FIG. 7 is a diagram showing an example of the printing condition information changed after the activation. In FIG. 7, the shaded portions indicate the changed settings.

A third embodiment corresponding to the third aspect of the present invention will be described. In the currently activated emulation, the settings of the printing conditions at the time of startup shown in FIG.
When the print conditions are changed to the settings as shown in FIG. 7 by the operation panel 6 after the startup, it is determined that print data has been received from a different user, and according to the emulation start conditions specified by the previous command, Performs emulation switching processing. In this way, an intended drawing result is obtained according to the printing conditions set on the operation panel 6 (in this case, the printing direction and the presence / absence of automatic line feed are changed).

FIG. 13 is a flowchart showing a second control example. It is determined whether there is data in the reception buffer (S11), and if not, other processing is performed (S11).
12). If there is data, the command is analyzed and processed (S13), and it is determined whether emulation switching is specified (S14). If not specified, other command processing is performed (S15). If specified, it is determined whether the specified emulation start condition is the same as the emulation start condition being started (S16). If they are not the same, an emulation switching process is performed (S
17). If they are the same, it is determined whether the printing conditions have been changed by the operation panel 6 (S18). If it has been changed, an emulation switching process is performed (S1).
7).

FIG. 8 is a diagram showing information on the operation mode of the emulation switching process. A fourth embodiment corresponding to the invention described in claim 4 will be described. Depending on a dedicated printer driver, command data for setting print conditions may exist in the data to be transferred. For this reason, in the emulation activated by such transfer data, the printing conditions are changed after the activation. In the second embodiment, when similar print data is transferred in this state, the same data is transferred. If the start condition of the emulation specified by the first emulation switch command is the same as the start condition of the emulation being started, print processing is performed without performing the emulation switch processing. For this reason, the intended drawing result cannot be obtained depending on the print data including the command data for setting the previous print condition.

Therefore, if the emulation start condition specified by the command is the same as the emulation start condition being started, the emulation switching process is not performed, and the emulation switch process is always performed according to the specified start condition. Is selected by the user, and the settings are stored as shown in FIG.

FIG. 14 is a flowchart showing a third control example. It is determined whether there is data in the reception buffer (S21), and if not, other processing is performed (S21).
22). If there is data, the command is analyzed and processed (S23), and it is determined whether emulation switching is specified (S24). If not specified, other command processing is performed (S25). If specified, it is determined whether or not the operation mode is one in which emulation switching processing is always performed (S26). Otherwise, an emulation switching process is performed (S27). If so, it is determined whether the designated emulation activation condition is the same as the activation emulation activation condition (S28). If they are not the same, an emulation switching process is performed (S
27).

FIG. 9 shows an example of error history information.
FIG. 10 is a diagram illustrating an example of information in a state where the error history is reset. A fifth embodiment corresponding to the fifth aspect of the present invention will be described. If the emulation switching process is not performed, and a user error (command error) has occurred, it may remain as an error history. For this reason, from the user's point of view, in this case, the print processing is performed in a state where the user error remains, so that it is determined that the print result is incorrect. Normally, when the emulation is restarted, the previous user error does not remain (is reset).

Therefore, when the emulation switching process is not performed, if error information as shown in FIG. 9 remains in the currently activated emulation as an error history, this error history is displayed as shown in FIG. , Reset (no error).

FIG. 15 is a flowchart showing a fourth control example. It is determined whether there is data in the reception buffer (S31), and if not, other processing is performed (S31).
32). If there is data, the command is analyzed and processed (S33), and it is determined whether emulation switching is specified (S34). If not specified, other command processing is performed (S35). If there is a designation, it is determined whether the designated emulation activation condition is the same as the activation condition of the emulation being activated (S36). If they are not the same, an emulation switching process is performed (S
37). If they are the same, reset the error history (S
38).

FIGS. 11A and 11B are diagrams showing examples of messages on the display unit. A sixth embodiment corresponding to the invention described in claim 6 will be described. Whether the user error has been reset ordinarily cannot be confirmed unless a summary sheet (print condition list print) or the like is printed. Therefore, when the error history is reset without performing the emulation switching process, a message is displayed on the operation panel 6 as shown in FIG.

FIG. 16 is a flowchart showing a fifth control example. It is determined whether there is data in the reception buffer (S41), and if not, other processing is performed (S41).
42). If there is data, the command is analyzed and processed (S43), and it is determined whether emulation switching is specified (S44). If not specified, other command processing is performed (S45). If specified, it is determined whether the specified emulation start condition is the same as the activated emulation start condition (S46). If they are not the same, an emulation switching process is performed (S
47). If they are the same, the error history is reset (S4
8) Display a message on the operation panel 6 (S4)
9).

FIG. 17 is a diagram showing information on emulation start conditions, FIG. 18 is a diagram showing an example of command data specifying emulation switching, FIG. 19 is a diagram showing an example of emulation start conditions specified, and FIG.
FIG. 7 is a diagram showing the start condition (a) of an existing (resident) emulation and the start condition (b) of a registered program.

A seventh embodiment according to the present invention will be described. Figure 1 shows the emulation start conditions.
7, the emulation type and switch N
o. The same information is stored in the work memory 3.
Switch No. Is a number indicating the order of registration (1 to n) when the setting contents of the printing conditions of the same emulation are registered in the program. No. A value of 0 indicates a starting condition in an initial state in which no program is registered.

Here, as an operation example, when the command data of the content shown in FIG. 18 is received, the start condition specified by the command is as shown in FIG. FIG. 20 shows emulation information (initial state, switch numbers are all “0”) existing in the printer (all switch numbers are “0”) and the registered program activation conditions. Thus, the start condition specified by the command shown in FIG. 19 can be compared with each start condition shown in FIG.

FIG. 21 is a flowchart showing a sixth control example. It is determined whether there is data in the reception buffer (S51), and if not, other processing is performed (S51).
52). If there is data, the command is analyzed and processed (S53), and it is determined whether emulation switching is specified (S54). If not specified, other command processing is performed (S55). If there is a designation, it is determined whether or not the same activation condition as the designated emulation exists in the existing activation condition (S56). If so, the emulation switching process is performed under the specified activation condition (S57). If not, the job is canceled (S5
8).

An eighth embodiment corresponding to the eighth aspect of the present invention will be described. In this embodiment, if there is no emulation or program that meets the emulation start condition specified by the command, the emulation cannot be switched, and the emulation currently started processes the subsequent drawing data. That is, a plurality of abnormal print contents are prevented from being output.

As a result of comparing the activation conditions shown in FIGS. 19 and 20, if none of the activation conditions is the same, the subsequent drawing data is canceled. In this case, there is an existing emulation of the same type as the emulation type “R02” (FIG. 19), but the same switch N
o. There is no start condition. Accordingly, there is no job that satisfies the designated start condition, and the job is canceled (see FIG. 21).

FIG. 22 is a diagram showing an example of a start condition suitable for a designated type of emulation. A ninth embodiment corresponding to the ninth aspect of the present invention will be described. In this embodiment, in the eighth embodiment, there are some emulation start conditions specified by the same command that match the type of emulation.
If there is nothing that matches the order in which they were registered as a program in the same emulation, it is determined that there is no one that meets the startup conditions, and the emulation is not switched. This is to prevent data from remaining.

In the eighth embodiment, when there is no one that satisfies the designated start condition shown in FIG. 19, it is further searched whether there is one having the same emulation type. If there is the same one, emulation is started according to the start condition (FIG. 22). In this case, there is an existing emulation of the same type as the emulation type “R02” (FIG. 19), but the same switch No. There is no start condition. Therefore, a search is made again to see if the same type of emulation exists, or to find an existing emulation start condition (FIG. 19). Since the same type as the specified emulation type “R02” exists (FIG. 19),
The same condition is set as a start condition (FIG. 22).

FIG. 23 is a flowchart showing a seventh control example. It is determined whether there is data in the reception buffer (S61), and if not, other processing is performed (S61).
62). If there is data, the command is analyzed and processed (S63), and it is determined whether emulation switching is specified (S64). If not specified, other command processing is performed (S65). If there is designation, it is determined whether the same activation condition as the designated emulation activation condition exists in the existing activation condition (S66). If there is, the emulation switching process is performed under the specified start condition (S67). If not, it is determined whether or not the same type of the specified emulation exists in the existing activation condition (S
68). If so, the emulation is switched to the same type of emulation searched (S69). If not, the job is canceled (S70).

FIG. 24 is a diagram showing an example of a message on the operation panel. A tenth aspect according to the tenth aspect.
An embodiment will be described. In this embodiment, the emulation switching process is not performed in the eighth embodiment,
When the job of the drawing data is canceled, it is possible to prevent the printer from being judged to be not operating normally (problem) when viewed from the user side. In the eighth embodiment, when the job is canceled, a message is displayed on the operation panel 6 (see FIG. 24).

FIG. 25 is a flowchart showing an eighth control example. It is determined whether there is data in the reception buffer (S71), and if not, other processing is performed (S71).
72). If there is data, the command is analyzed and processed (S73), and it is determined whether emulation switching is specified (S74). If not specified, other command processing is performed (S75). If there is a designation, it is determined whether the same activation condition as the designated emulation exists in the existing activation condition (S76). If there is, the emulation switching process is performed under the specified activation condition (S77). If not, cancel the job (S7
8) A message is displayed on the operation panel (display unit) 6 (S79).

[0060]

According to the first aspect of the present invention, it is determined whether or not the activation condition of the emulation specified by the received emulation switching command is the same as the activation condition of the currently activated emulation. It is possible to optimally determine whether to perform the emulation switching process according to the conditions.

According to the second aspect of the present invention, if the activation condition of the currently activated emulation and the activation condition of the emulation specified by the emulation switching command are the same, the emulation switching processing is not performed. Therefore, printing can be performed without reducing the printing speed.

According to the third aspect of the present invention, if the printing conditions are changed by the operation panel after the currently activated emulation is started, the emulation is performed in accordance with the emulation start conditions specified by the emulation switching command. Since the switching process is performed, users using the dedicated printer driver and another (non-dedicated) printer driver can share (mix) and print normally.

According to the fourth aspect of the present invention, the emulation start condition specified by the emulation change command is compared with the emulation start condition of the currently activated emulation, and the emulation change process is performed. Since any of the modes for performing the emulation switching process can be selected according to the emulation start condition specified by the emulation switching command, printing can be performed in accordance with the operating environment of the user.

According to the fifth aspect of the present invention, when the emulation switching process is not performed, the user error is reset, so that there is no error, and normal printing can always be performed.

According to the sixth aspect of the invention, if the emulation switching process is not performed, a message to that effect is displayed on the operation panel, so that it is possible to confirm that no error remains without printing a summary sheet. You can check.

According to the seventh aspect of the present invention, the emulation during startup determines whether there is an emulation and a program that meet the emulation start conditions specified by the received emulation switching command. It is possible to optimally determine whether to perform the emulation switching process according to the conditions.

According to the present invention, if there is no emulation or program that satisfies the emulation start condition specified by the emulation switching command, the subsequent drawing data is canceled because the job is canceled. A state in which data can be processed normally can be set.

According to the ninth aspect of the present invention, if there is no emulation or program that satisfies the specified activation condition, but there is an emulation that satisfies the specified type of emulation, the activation condition of the emulation does not exist. , The drawing data can be printed, and the drawing data transferred thereafter can be normally processed.

According to the tenth aspect, the fact that the drawing data has been canceled is displayed as a message on the operation panel, so that it is possible to confirm that there is no emulation that meets the designated activation condition.

[Brief description of the drawings]

FIG. 1 is a block diagram of a printing apparatus.

FIG. 2 is a diagram illustrating an example of emulation switching command data.

FIG. 3 is a diagram showing information on emulation start conditions.

FIG. 4 is a diagram showing an example of command data specifying emulation switching.

FIG. 5 is a diagram showing a start condition (a) of an emulation during start and a start condition (b) specified by an emulation switching command.

FIG. 6 is a diagram illustrating an example of information on a printing condition in an activated state.

FIG. 7 is a diagram illustrating an example of printing condition information changed after activation.

FIG. 8 is a diagram showing operation mode information of an emulation switching process.

FIG. 9 is a diagram illustrating an example of error history information.

FIG. 10 is a diagram illustrating an example of information in a state where an error history is reset.

FIGS. 11A and 11B are diagrams illustrating examples of messages on a display unit. FIGS.

FIG. 12 is a flowchart illustrating a first control example.

FIG. 13 is a flowchart illustrating a second control example.

FIG. 14 is a flowchart illustrating a third control example.

FIG. 15 is a flowchart illustrating a fourth control example.

FIG. 16 is a flowchart illustrating a fifth control example.

FIG. 17 is a diagram illustrating information on emulation start conditions.

FIG. 18 is a diagram illustrating an example of command data specifying emulation switching.

FIG. 19 is a diagram illustrating an example of a specified emulation activation condition.

FIG. 20 is a diagram showing a start condition (a) of an existing (resident) emulation and a start condition (b) of a registered program.

FIG. 21 is a flowchart illustrating a sixth control example.

FIG. 22 is a diagram illustrating an example of a start condition that matches a specified emulation type.

FIG. 23 is a flowchart illustrating a seventh control example.

FIG. 24 is a diagram showing an example of a message on the operation panel.

FIG. 25 is a flowchart showing an eighth control example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Firmware 2 CPU 3 Work memory 4 NVRAM 5 Printing part 6 Display part (operation panel) 7 Host I / F

Claims (10)

[Claims] An emulation switching command for switching a plurality of emulations specifies an emulation start condition for performing a printing process, and a printing apparatus which starts the emulation and performs printing is specified by a received emulation switching command. A printing apparatus comprising: a determination unit configured to determine whether an emulation activation condition is the same as a currently activated emulation activation condition. 2. A printing apparatus according to claim 1, wherein when the start condition of the currently activated emulation and the start condition of the emulation specified by the emulation switching command are the same, the emulation switching process is not performed. A printing device, comprising: 3. The printing apparatus according to claim 2, wherein when the printing condition is changed by the operation panel after the currently activated emulation is started, the emulation start condition specified by the emulation switching command is set. A printing apparatus that performs emulation switching processing according to the following. 4. The emulation switching process according to claim 1, wherein the emulation activation condition specified by the emulation switching command is compared with the activation condition of the currently activated emulation. Or a mode in which emulation switching processing is always performed in accordance with an emulation start condition specified by an emulation switching command. 5. The printing apparatus according to claim 2, wherein a user error is reset when the emulation switching processing is not performed. 6. The printing apparatus according to claim 5, wherein when the emulation switching process is not performed, a message to that effect is displayed on the operation panel. 7. An emulation switching command for switching a plurality of emulations specifies an emulation start condition for performing a printing process, and in a printing apparatus that starts the emulation and performs printing, the emulation switching command specifies the emulation start command. A printing apparatus comprising: a determination unit configured to determine whether an emulation and a program satisfying a condition for starting emulation exist. 8. The printing apparatus according to claim 7, wherein if there is no emulation or program that satisfies the emulation start condition specified by the emulation switching command, the subsequent drawing data is canceled. apparatus. 9. The printing apparatus according to claim 8, wherein when the same emulation as the type of emulation specified by the emulation switching command exists, the emulation is activated. 10. The printing apparatus according to claim 8, wherein a message that the job of the drawing data is canceled is displayed as a message on an operation panel.