JP2000006483A - Printer, print command generation apparatus and printing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the problem in a printer having a function of detecting a paper skew when the paper is supplied, thereby stopping the execution of printing uniformly when the skew exceeds a preliminarily set constant threshold value although the threshold value is sometimes not proper depending on kinds of papers, etc. SOLUTION: A print command generation part 22 of a host 2 forms into a control code data of values related to a permissible inclination range specific to a paper in accordance with a kind of the paper designated by a print requirement emission part 21, adds to a print command and transmits to a printer. The printer analyzing the code makes a sensor 12 actually measure a skew value. The measured thickness and the permissible range value received as the data are compared by a comparison reference part 37. Only when the measured value exceeds the value expressed by the received data, printing is stopped and a display part 24 of the host is let to display a warning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer and a printing system, and more particularly, to stopping a printer according to a paper skew in a printer, that is, an inclination of the paper with respect to a main scanning direction of the printer. The present invention relates to a print control technique for a printer capable of protecting a printer mechanism.

[0002]

2. Description of the Related Art Some conventional printers, especially serial printers on which various types of paper are loaded, detect a skew of paper by a sensor and stop printing in accordance with the degree of skew. FIG. 17 and FIG. 18 show the simplest configuration examples of the paper skew detection mechanism.

FIGS. 17 and 18 show an outline of a configuration of a printer of, for example, an ink jet system, and show a state in which paper is fed from a manual paper feed port 51. FIG. The feed skew detection mechanism is configured using two photo sensors 121 and 122. As shown in FIG. 17, when the sheet is being fed straight, the sensors 121 and 122 simultaneously detect the leading edge of the sheet. On the other hand, as shown in FIG. 18, when the sheet is fed obliquely, the timing at which the sensor 121 detects the sheet and the timing at which the sensor 122 detects the sheet are different. The difference between the two detection timings is
If it exceeds a certain threshold value, it is determined that a paper skew has occurred, and printing is stopped.

In the simple configuration in which the sheet skew is detected by the two sensors as described above, if the two sensors are disposed too far apart, it becomes impossible to detect a sheet having a small width. Conversely, if the distance between the two sensors is too small, the distance between the detection timings of the two sensors will be small, and the detection accuracy will be poor.

FIGS. 10 and 12 show a paper skew detecting mechanism which overcomes the above-mentioned drawbacks. Illustrated in the figure is an impact-type printer that performs engraving printing on paper on a platen 133. The carriage 13 is equipped with a dot matrix head for performing printing by projecting a plurality of wire pins, and a photosensor 123 is mounted at the tip of the dot matrix head, and moves the carriage 13 in a direction indicated by a thick arrow in the drawing. Then, the paper skew is detected by scanning the leading edge of the paper.

The platen 133 is actually black in color, and detects a paper skew by obtaining a voltage waveform as shown in FIGS. 11 and 13 from a difference in reflectance from white paper. . It should be noted that the paper skew detection mechanism having this configuration can also detect the width of the paper itself.

[0007]

As shown in FIG. 10, when paper skew is detected by scanning a sensor, paper is fed first, and once the paper reaches the print preparation position, paper is fed once. The feeder 112 is stopped. afterwards,
The procedure of detecting the paper skew by causing the carriage 13 to perform main scanning in the direction of the arrow is performed. Therefore, skew detection requires a considerable amount of time, and today, as the speed of the printing mechanism has been improved, the proportion of the time required for the paper skew is relatively increasing.

Further, the paper used in the dot impact type printer is often a dedicated one created according to the intended use, and it is conceivable that a very wide variety of papers are to be printed. Some types of paper require accurate embossing printing in a small printing area, while other types of printing use normal ribbon, for example, A4 paper with an ink ribbon. In some cases, it is not necessary to consider paper skew at all because paper is fed by a tractor.

[0009] When the paper is fed at an angle,
The requirement to actually stop printing also depends on the type of paper used. Further, it depends on whether the paper is fed manually or by a sheet feeder. Nevertheless, heretofore, paper skew has been uniformly detected, and printing execution and stop have been determined on a uniform basis. For this reason, printing is stopped even if it takes time to perform a detection operation that is originally unnecessary, or even if the paper skew is small enough to stop printing. Therefore, unnecessary time is consumed, which causes a reduction in printing throughput and a reduction in the processing speed of the entire printing system including the host.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printer and a printing system capable of improving the processing speed by eliminating the useless time and labor caused by the above-described paper skew detection. And to realize an efficient printing environment.

[0011]

In order to solve the above problems, according to the present invention, information necessary for determining whether or not a paper skew detection operation is performed from a host computer, and information relating to an allowable range of the paper skew size are provided. I try to send. Then, in the printer that receives the information, the skew detection mechanism is controlled in accordance with the content indicated in the information.

That is, in the printing system according to the first aspect,
In a printing system including a host that generates a print command and a printer that receives the print command sent from the host and performs a printing operation on a sheet, the host computer detects skew of the sheet in the printer. A print command generating unit capable of generating a print command including information on whether or not the operation to be performed is performed, and the printer performs skew feeding of the sheet according to the information on whether or not the operation is received from the host computer. It is characterized by having a skew detection sensor for performing an operation of detecting.

In this printing system, it is troublesome if it is necessary for the user to specify whether to perform the above-described detection operation or not for each printing operation. Therefore, it is also possible that the system automatically determines whether to perform detection or not by simply designating the type of paper. That is, in the printing system according to the second aspect, in the printing system, the print command generation unit of the host computer transmits the paper type information and the information about whether or not to perform the skew detection operation for each paper type. A first table is provided for corresponding storage. Then, when the type of printing paper is received from the application program that issues the print request, the first table is searched by using the type information of the printing paper as a key, and whether or not the searched operation is executed is determined. A print command including information according to the information is generated.

When the paper skew detection operation is actually performed, unnecessary stoppage of printing can be reduced by setting the allowable range of skew for each type of printing paper. That is, a printing system according to a third aspect includes a host computer having a print command generation unit capable of generating a print command including information on an allowable range of the skew of a sheet in a printer; Is constituted by a printer having a sensor capable of measuring. The printer stops printing only when the size of the skew measured by the sensor exceeds the value of the skew indicated by the information on the allowable range received from the host computer.

Also in this configuration, it is convenient if the user simply specifies the type of paper and the system automatically determines the value of the allowable range and determines whether to stop printing. Therefore, in the printing system according to the fourth aspect, the print command generation unit of the host computer includes:
A second table is provided for storing paper type information and information on the permissible range for each paper type in a corresponding manner. When the type of printing paper is received from the application program that issues the print request, the second table is searched using the type information of the printing paper as a key, and the printing including the information on the retrieved allowable range is performed. Generate instructions.

In these printing systems, when it is determined that paper is not set correctly as a result of paper skew detection, printing is temporarily stopped.
At this time, if there is a means for informing the user that the paper skew has occurred, the smooth use of the system is further promoted. Therefore, in the printing system according to the fifth aspect, in any one of the skew feeding detection systems for printing paper, which includes a host computer and a printer connected so as to be capable of bidirectional communication, the printer stops executing the printing. In this case, the host computer is notified that the paper is skewed.

The above-described configuration relating to the execution and non-execution of the sheet skew detection operation may be combined with the above-described configuration in which the allowable range is individually set.

That is, in the printing system according to the sixth aspect,
The print command generation unit of the host computer is configured to be able to transmit not only the information on the permissible range but also the information on whether or not the skew detection operation of the sheet is performed in the print command. The sensor of the printer performs or does not perform the skew detection operation of the sheet according to the information on the presence or absence of the execution received from the host computer.

According to another aspect of the present invention, there is provided a printer having a sensor capable of detecting the presence or absence of skew of a sheet being fed, and detecting a skew of the sheet when the sensor detects the skew of the sheet. In a printer configured to halt the execution of printing, the sensor detects the presence or absence of skew only when receiving a print command including information instructing execution of a sheet skew detection operation from a host computer. It is characterized by performing.

In addition to the above configuration, the printer according to the present invention stores the paper type information and information as to whether or not to execute the skew detection operation for each paper type. Provide a table. And from the host computer,
When a print command including paper type information is received, the first table is searched using the paper type information as a key,
According to the information on whether or not to execute the searched detection operation,
The sheet skew detection operation by the sensor is configured to be performed or not performed.

According to a ninth aspect of the present invention, in the printer having a sensor capable of detecting the magnitude of the skew of the paper being fed, information on the allowable range of the skew of the paper from the host computer is provided. When a print command including a skew is received, the magnitude of the skew measured by the sensor is compared with the magnitude of the skew represented by the information on the allowable range received from the host computer, and the former value is compared with the latter. It is configured to stop printing when the value is exceeded.

A printer according to a tenth aspect of the present invention, in addition to the above-described configuration, further comprises a second table for storing paper type information and information on the permissible range for each paper type in a corresponding manner. . When receiving a print command including paper type information from the host computer, the second table is searched using the paper type information as a key,
Only when the value of the skew of the sheet detected by the sensor exceeds the value of the skew of the sheet represented by the information on the allowable range retrieved from the second table,
It is configured to stop printing.

On the other hand, in order to solve the above-mentioned problem, a control method of a printing system according to the present invention has a sensor capable of detecting the magnitude of skew of a sheet being fed, and the sensor detects the skew. A printer configured to stop or continue printing in accordance with the size of the skew, and a host computer, the host computer comprising: When the value represented by the information on the allowable range is an invalid value, the printer does not perform the detection operation by the sensor. On the other hand, when the value represented by the information on the allowable range is a valid value, the detection operation by the sensor is performed,
The value represented by the information on the permissible range is compared with the value of the skew of the sheet detected by the sensor, and as a result of the comparison, the value detected by the sensor is replaced by the value represented by the information. When it exceeds, execution of printing is stopped.

Further, a computer program for implementing the above control procedure can be recorded and held on a specific medium. That is, a recording medium on which the program according to claim 12 is recorded has a memory for storing an application program for issuing a print request, and a computer for executing a process according to the program detects a skew of the sheet being fed. Is a program for transmitting a print command to a printer having a printer, and controlling the printer.In the print information issued by the application program, information on whether or not the skew feed detection operation of the paper is performed, and / or A program for controlling the computer is recorded so that information on the allowable range of the skew is added and the command interpreter of the printer is translated into a format that can be interpreted and transmitted to the printer. Features.

By operating a so-called printer driver or application program, the host computer can be formed as a device for generating a print command for solving the above-mentioned problems.

That is, in the print command generating apparatus according to the thirteenth aspect, a print command for a printer capable of stopping printing based on the result of detecting the skew of the sheet being fed is provided. An instruction generating apparatus, comprising: a print request issuing unit that issues a print request; and a print instruction generating unit that generates and outputs the print instruction based on a print request from the print request issuing unit. The generation unit may generate the print command including information on whether or not to cause the printer to perform the skew detection operation.

Further, in the print command generating apparatus according to the present invention, even if a skew of the sheet is detected as a result of causing the printer to perform the skew detection operation during the print command, the printing is performed. It is characterized in that it can be generated including threshold information of the magnitude of the skew just enough to stop.

The print command generating apparatus according to claim 15 performs, for example, a printer capable of always performing skew detection of a sheet and stopping printing based on the detection result. It is characterized in that even when a skew of a sheet is detected by the printer, the skew can be generated including threshold information of the skew size enough to stop printing.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a hardware configuration of the entire printing system according to the present embodiment. The printing system to which the present invention is applied includes, for example, a printer 1 having an impact dot matrix type head 14 and a host computer 2. The printer 1 performs embossing printing on a copy sheet such as a slip sheet in which a plurality of carbonless papers are spelled as one sheet, a continuous sheet supplied by the tractor 52, and the like, by projecting a wire pin from the head 14. If the paper to be used is continuous paper, it is set on the tractor 52, and if it is cut paper such as copy paper,
The sheet is set in a manual sheet feeding port 51 or a cut sheet feeder or the like provided in place of the tractor 52, and is fed along a paper path indicated by a thick line in the drawing. When the sheet is fed to the print preparation position by the sheet feeder 11, the sheet skew is detected by the sensor 12 according to a procedure described later. The printer 1 includes a CPU 16, a ROM 17, an RA
A printer control unit having a computer configuration including M18 and the like is provided.

FIG. 2 is a block diagram showing the contents of functions realized by these hardware. Each function is
Actually, it is realized by executing a predetermined program by the CPU. Hereinafter, the content of each functional block will be described with reference to FIG. 3 which is a sequence chart showing a flow of a procedure when executing printing.

First, the user of the printing system performs a paper type selection operation in accordance with the type of a form or the like to be printed. Then, after performing necessary processing in the application program, such as inputting a character string to be printed and selecting data to be output, an operation of executing printing is performed. The print request issuing unit 21, which is a function of the application program, sends information relating to the selection of the paper type and a character string to the print command generation unit 22, which is a part of the function of the printer driver, according to the input made by the user. The print command generating unit 22 translates the command into a format that can be interpreted by the command interpreting unit 32 of the printer 1 (specifically, the command interpreter of the printer has this function).
Send to printer.

At this time, the information conversion unit 23 of the print command generation unit 22 receives the specification of the paper type from the print request issuance unit 21 and information on whether or not to detect the paper skew, and if so, performs it. If this is the case, it is converted to information on the value of the allowable paper inclination. The conversion of information is performed by referring to a conversion table. For example, this conversion table is for converting contents such as a table 60 shown in FIG. Here, form names such as "Dump list" and "Total invoice" are used as keys.
In accordance with the mode of use of each form, it is possible to specify whether or not to detect the paper skew, and to find the value of the allowable paper skew. In the table, additional settings can be made for forms newly used and recorded as correspondence information.

For example, when the user attempts to issue a "dump list" in the memory of the host computer, the printout is performed on the fanfold paper set on the tractor 52. No need to worry. In this case, a sheet skew detection operation “not performed” is searched for using “dump list” as the sheet type as key information.

As described above, the information retrieved using the information of the paper type as a key is converted into a command by the print instruction generating unit 22, and
Sent to printer. Each print command shown in FIGS. 7 to 9 exemplifies the contents of the print command at this time. The print command 70 in FIG. 7 represents an example of a print command when skew detection is not performed.

In the printer 1 receiving the print command 70,
The command interpreter 32 interprets the print data and the control code. In accordance with the interpreted command, the skew detection unit 35 executes the execution determination sequence and the skew measurement sequence if necessary. In this case, since the header of the print data 70 contains information indicating that skew detection is not to be performed, the execution determining unit 36 that has received this information passes the control data through to perform normal print control.

Next, a procedure for detecting the paper skew will be described with reference to a sequence chart shown in FIG.

For example, as shown in a table 60 in FIG. 6, when a user attempts to issue a "total bill" which is a relatively large cut sheet, a considerably precise adjustment of the printing position is required. Therefore, information indicating “execution” of the sheet skew detection operation and information indicating a narrow “permissible range” is found. According to this result, a print command 80 shown in FIG. 8 is created and sent to the printer. The printer 1 having received the command 80 executes a skew measurement sequence.

As a result of the skew measurement, when it is determined that the paper is loaded correctly, printing is executed, and when it is determined that the paper skew is occurring, a display warning to that effect is given to the host computer. Let them do it. FIG.
6 is a sequence chart showing a procedure during the time.

The data interpreted by the print data interpreting section 33 is developed into a bit map in the image buffer 38.
On the other hand, in response to the print start command, the motor control unit 4
0 activates the paper feeder 12. When the paper is loaded at the print preparation position, the execution determination unit 36 transmits the control information to the motor control unit 40 to cause the head 14 to perform sub-scanning, and to execute the sensor 12 (more specifically, for example, FIG.
Then, the sensor 123) shown in FIG. 12 is driven to measure the state of the sheet.

The measurement result is returned to the comparison section 37. Here, the data in the allowable range included in the print command 80 and the actually measured value are compared. The graph of FIG. 11 shows the state of actual measurement data when paper skew does not occur. The graph shows the value of the detection voltage of the photo sensor 123 on the Y axis,
The position of the sensor 123 scanned on the axis is shown.
Since the position of the sensor beyond the voltage value indicated by the dotted line in the figure is included in the value represented by the data in the allowable range received from the host computer (indicated by hatching in the figure), the comparison and comparison unit 37 It is determined that no paper skew has occurred, and printing is performed.

On the other hand, as shown in FIG. 12, when the sheet is fed with a slant, the voltage value obtained by the sensor 123 is as shown in the graph of FIG. In this case, the comparison / contrast unit 37 determines that a paper skew has occurred, stops printing, and controls the control panel 20 mounted on the printer housing.
On the liquid crystal display section of "warning of paper skew". At the same time, the fact is notified to the host computer, and a warning is displayed on the display unit 24 such as a monitor on the host side. The printer user who sees the warning display can reset the loaded paper and continue the printing operation.

Next, a case where an "individual bill", which is a relatively small cut sheet, is to be issued will be described. In this case, it is assumed that the printing position is not required to be adjusted as precisely as in the case of the “total bill”, and the width of the allowable range is set relatively large (see FIG. 6). Therefore, even if the paper inclination is almost the same as in the case where printing is stopped in the above "Total invoice", printing may be executed as it is in "Individual invoice". Become.

As described above, since the allowable paper skew value can be set individually, it is possible to avoid unnecessary stoppage of printing. Of course, even in the case of “Individual Invoice”, if the paper is too skewed,
The printing is stopped and a warning is displayed.

In the above, an example has been described in which the print command generation unit 22, which is a functional block of the printer driver, performs data conversion using a table. This data conversion does not necessarily have to be performed as a function of the printer driver, and the application program may have this function. FIG. 1 shows the configuration of functional blocks on the host computer side in that case.
6 The information conversion unit 23 of the print request issuing unit 21, which is a functional block realized by executing the application program, refers to the above-described table 60 and determines whether or not to execute the paper skew detection operation using the paper type information as a key. , And information on how to set the allowable skew range in the case of execution.
At this time, FIG. 14 shows a flow of a procedure for determining whether or not to execute the paper skew detection operation, and FIG. 15 shows a flow of a procedure relating to skew measurement, printing stoppage, and warning display.

Further, the data conversion table may be provided on the printer side. In this case, the table is stored in the ROM 17 of the printer 1 in advance, or a dedicated non-volatile memory is separately prepared to store the table.
The print command includes control data for performing data conversion using the table.

The data conversion table is not necessarily "executed /
It is not necessary to keep both information about "do not perform" and information about an allowable skew value. The configuration may include only one of them as necessary, or the configuration may include two tables separately.

Although the present invention has been described with reference to the specific embodiments, the present invention is not limited to these embodiments, and is applicable to other embodiments within the scope described in the claims. You.

For example, in the above-described embodiment, the case where the paper skew is measured by scanning with a single sensor as shown in FIGS. 10 and 12 has been described. The present invention is also applicable to a paper skew detection mechanism having a simple configuration as shown. In that case,
The value of the allowable range of the paper skew may be determined, for example, based on whether or not the time difference between the two sensors detecting the leading edge of the paper exceeds a certain threshold value. That is, a table in which this threshold value is set for each paper type is prepared.

The data for determining whether or not the paper skew is “executed / not implemented” is a print command 90 shown in FIG.
By inserting an invalid allowable range, for example, "0" or infinity "$" into the header portion, it is possible to replace the data with "not implemented". In such a case, the execution determination unit 36 may read this invalid value so that the sensor 12 is not activated.

[0051]

Conventionally, paper skew is detected uniformly regardless of printing on any paper, and
Although it was determined whether or not to stop printing on a uniform basis, by using the printing system and printer of the present invention, unnecessary paper skew detection operation can be omitted. It is no longer necessary to stop

As a result, an efficient printing environment can be provided to the user.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a hardware configuration of an entire printing system according to an embodiment.

FIG. 2 is a block diagram for explaining each function of the printing system.

FIG. 3 is a sequence chart illustrating an example of a flow of a procedure for determining whether to execute a sheet skew detection operation when performing printing.

FIG. 4 is a sequence chart illustrating an example of a procedure flow when performing a paper skew detection operation when performing printing.

FIG. 5 is a sequence chart showing details of a skew measurement sequence shown in FIG. 4;

FIG. 6 is a diagram showing the contents of information stored in a data conversion table.

FIG. 7 is a diagram illustrating the contents of a print command used in the printing system according to the embodiment, and illustrates an example of data when paper skew detection is not performed.

FIG. 8 is a diagram illustrating the contents of a print command used in the printing system according to the embodiment, and illustrates data when paper skew detection is performed.

FIG. 9 is a diagram illustrating the contents of a print command used in the printing system according to the embodiment, and illustrates another example of data when paper skew detection is not performed.

FIG. 10 is a diagram showing an outline of the inside of a printer mechanism for explaining a sheet skew detection operation, and shows a state in which sheets are correctly set.

FIG. 11 is a diagram showing a graph of a voltage value measured by a sensor in the state shown in FIG. 10;

FIG. 12 is a diagram illustrating an outline of the inside of a printer mechanism for explaining a sheet skew detection operation, and illustrates a state in which sheet skew is occurring.

FIG. 13 is a graph showing a voltage value measured by a sensor in the state shown in FIG. 12;

FIG. 14 shows a case where the configuration shown in FIG. 16 is adopted.
9 is a sequence chart illustrating a flow of a procedure for determining whether or not to execute a sheet skew detection operation.

FIG. 15 shows a case where the configuration shown in FIG. 16 is adopted.
9 is a sequence chart illustrating a flow of a procedure when a paper skew detection operation is performed.

16 is a diagram illustrating an example of a configuration different from the configuration of the functional blocks illustrated in FIG. 2;

FIG. 17 is a diagram illustrating an outline of the inside of a printer mechanism for explaining a sheet skew detection operation, and illustrates a state in which sheets are correctly set.

FIG. 18 is a diagram illustrating an outline of the inside of a printer mechanism for explaining a sheet skew detection operation, and illustrates a state in which sheet skew is occurring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printer 11 Paper feeder 111 Paper feed motor 112 Paper feed roller 12, 121-123 Photosensor 13 Carriage 131 Paper feed motor 132 Guide rail 133 Platen 14 Head 15 Paper discharge feeder 151 Paper discharge motor 152 Paper discharge roller 16 CPU 17 ROM 18 RAM 20 control panel 2 host computer 21 print request issuing unit 22 print command generation unit 23 information conversion unit 24 display unit 3 printer control unit 31 interface unit 32 command interpretation unit 33 print data interpretation unit 34 control code interpretation unit 35 skew detection unit 36 Execution determination unit 37 Comparison / contrast unit 38 Image buffer 39 Head control unit 40 Motor control unit 50 Printer housing 51 Manual feed port 52 Tractor 53 Discharge port 60 Table 70, 80, 9 0 Print data

Continued on the front page F-term (reference) 2C058 AC04 GB23 GB33 GB54 2C059 AA00 AA47 AA55 AA63 2C061 AQ01 AS02 HK11 HV09 HV44 3F343 FA02 FB02 FC11 HB02 HC28 JC18 JC20 MA03 MA15 MA57 MB04 MB15 MC25 5B0219 BB01 A0102

Claims (15)

[Claims] 1. A printing system comprising: a host that generates a print command; and a printer that receives the print command sent from the host and executes a printing operation on a sheet. A print command generating unit capable of generating a print command including information on whether or not the operation of detecting the skew is performed, wherein the printer responds to the information on the presence or absence of the execution received from the host computer, A printing system comprising a skew detection sensor that performs an operation of detecting skew of a sheet. 2. The printing system according to claim 1, wherein the print command generation unit of the host computer further associates the paper type information with information on whether or not to perform a skew detection operation for each paper type. A first table for storing and storing, and when receiving a designation of a printing paper type from a print request issuing unit for issuing a print request, searching the first table using the type information of the paper as a key, A printing system for generating a print command in accordance with information on whether or not the detected detection operation is performed. 3. The printing system according to claim 1, wherein the print command generation unit of the host computer further generates the print command including information on an allowable range of skew of paper in a printer, The skew detection sensor is configured to be able to measure the size of skew of the sheet. If the size of the skew measured by the skew detection sensor exceeds the allowable range in the print command, A printing system, wherein the printer stops printing. 4. The printing system according to claim 3, wherein the print command generation unit further stores a second table that stores paper type information and information on the permissible range for each paper type in a corresponding manner. When a print request is received from a print request issuing unit that issues a print request, the second table is searched using the type information of the sheet as a key, and information on the retrieved allowable range is retrieved. A print system for generating a print command including the print command. 5. The printing system according to claim 3, wherein the printing system comprises a host computer and a printer connected so as to be capable of two-way communication, wherein the printer stops executing the printing.
A printing system for notifying the host computer that paper is skewed. 6. The printing system according to claim 3, wherein the print command generation unit of the host computer can transmit the print command including information on whether or not a skewed sheet detection operation is performed in the print command. The skew detection sensor of the printer, according to the information on the presence or absence of the implementation received from the host computer,
A printing system for performing a sheet skew detection operation. 7. A printer having a skew detection sensor for detecting the presence or absence of skew of a sheet being fed, and stopping printing when the skew detection sensor detects the skew of the sheet. Wherein the skew detection sensor detects the presence or absence of skew only when a print command including information instructing execution of a skew detection operation of a sheet is received from a host computer. 8. A printer having a skew detection sensor for detecting the presence or absence of skew of a sheet being fed, and stopping printing when the skew detection sensor detects the skew of the sheet. A first table for storing the paper type information and information as to whether or not to execute the skew detection operation for each paper type, wherein when a print command including the paper type information is received, Searching the first table by using the type information of the paper as a key, and performing the skew detection operation of the paper by the skew detection sensor according to the information as to whether or not to execute the searched detection operation. A printer. 9. A printer having a skew detection sensor capable of detecting the size of skew of a sheet being fed, wherein a print command including information on an allowable range of the skew of the sheet is sent from a host computer. When receiving, when the magnitude of the skew measured by the sensor exceeds the value of the magnitude of the skew represented by the information on the allowable range received from the host computer, the execution of printing is stopped. Characterized printer. 10. A printer having a skew detection sensor capable of detecting the size of skew of a sheet being fed, wherein sheet type information and information on the permissible range for each sheet type are stored in a corresponding manner. When a print command including the paper type information is received from the host computer, the second table is used as a key with the paper type information as a key.
When the value of the skew of the sheet detected by the sensor exceeds the value of the skew of the sheet represented by the information on the allowable range retrieved from the second table. Wherein the execution of printing is stopped. 11. A skew detection sensor capable of detecting the size of skew of a sheet being fed, wherein the skew detected by the skew detection sensor exceeds a predetermined threshold. A method for controlling a printing system, comprising: a printer that stops printing; and a host computer that sends a print command to the printer, wherein the host computer includes, in the print command, an allowable range of the skew of a sheet. When the value represented by the information on the permissible range is an invalid value, the detection operation by the sensor is not performed, and the value represented by the information on the permissible range is a valid value. Performs a detection operation by the sensor, compares the value represented by the information on the allowable range with the value of the skew of the sheet detected by the skew detection sensor, As a result, the when the value detected by the skew detection sensor exceeds a value represented by the information, the control method of the printing system, wherein the printer stops execution of printing. 12. A computer having a memory for storing an application program for issuing a print request, a computer executing processing in accordance with the program, and a printer having a skew detection sensor for detecting skew of a sheet being fed. A printing medium for transmitting a command and controlling the printer, wherein the print information issued by the application program includes information on whether or not a sheet skew detection operation is performed, and / or a sheet skew. A program for controlling the computer is added so that information on an allowable range of line sizes is added, and the command is interpreted by a command interpreter included in the printer and is transmitted to the printer. Recording medium. 13. A skew detection operation of a sheet being fed is performed,
A print command generation device that generates a print command for a printer capable of stopping printing based on the detection result, comprising: a print request issuing unit that issues a print request; and a print request issuing unit that issues a print request based on the print request from the print request issue unit. A print command generation unit that generates and outputs the print command, wherein the print command generation unit generates the print command including information on whether or not to cause the printer to perform the skew detection operation in the print command. A print command generation device characterized by obtaining. 14. The print command generation device according to claim 13, wherein the print command generation unit further detects a skew of the sheet as a result of causing the printer to perform the skew detection operation during the print command. A print command generation apparatus characterized in that the print command generation apparatus can generate the information including threshold information of a skew size enough to stop printing even when the printing is stopped. 15. A skew detection operation of a sheet being fed is performed,
A print command generation device that generates a print command for a printer capable of stopping printing based on the detection result, comprising: a print request issuing unit that issues a print request; and a print request issuing unit that issues a print request based on the print request from the print request issue unit. A print command generation unit that generates and outputs the print command, wherein the print command generation unit only stops printing even when a skewed sheet of paper is detected by the printer during the print command. A print command generating apparatus capable of generating the information including threshold information of a skew size.