JP4711237B2 - Image forming system and image forming program - Google Patents

Description

  The present invention relates to an image forming system and an image forming program.

  As an image forming technique, there is a variable printing (variable printing) technique. This variable print technology is a technology for laying out the values of each field of user data described in a matrix format such as a CSV format, such as text / images, in a predetermined format and changing it for each sheet. Especially in the direct mail market, it is an effective technique for printing contents tailored to individual customer preferences.

  By the way, in the field of printing technology, in general, before performing actual printing, several simple printed materials are output, and trial printing is performed to check whether the printed matter is in a specified color or the like. Is called. Although the trial printing is performed similarly in the variable print technology, the variable print technology has a print content targeted at each customer, and there is a concern that personal information may be leaked from the trial printing.

  Conventionally, as an image forming technique for protecting personal information, a security ID is set for print data, and printing is performed when the security ID input at the time of printing matches the set security ID. A technique is known in which the operator is further prompted to input a security pattern, and the print operator can be restricted by printing the print data only when it matches a predefined security pattern (for example, Patent Documents). 1).

  In addition, when the received print instruction includes a password, at least the password and print content information in the print instruction are recorded on the IC chip of the print medium, so that the confidential document is stored in the image forming apparatus. In addition, a technique is also known in which a document is output in a format that cannot be read by others, and a document can be made readable or duplicated as necessary (see, for example, Patent Document 2).

JP-A-11-175298 JP 2005-28673 A

  The present invention does not use a special paper with an IC chip as a paper for trial printing, and does not limit the printing operator, but by protecting the printed matter printed out, personal information leaks from the printed matter. An object of the present invention is to provide an image forming system and an image forming program that can prevent the above-described problem.

  The image forming system according to claim 1 is an image forming system that forms an image by laying out values of each field of user data described in a matrix format in a predetermined format, and when performing a test printing process, A setting unit that sets information indicating whether or not to output the contents of the field for each field column for user data to be printed, and the user data can be output for each field column based on the setting information by the setting unit / Judgment means for judging the impossibility, and a printing means for printing the user data in a format that cannot be read for fields in which the judgment result by the judgment means cannot be output.

  The image forming system according to claim 2 is the image forming system according to claim 1, wherein the setting information by the setting means is password information.

  The image forming system according to claim 3, further comprising hash calculation means for calculating a hash value for each field column of the user data in the image forming system according to claim 1, wherein the determination means is configured to output the hash value when printing is instructed. The hash value for each field column of user data calculated by the hash calculation unit is compared with the hash value calculated by the hash calculation unit at the time of data registration, and output is possible / not possible for each field column based on the comparison result It is characterized by judging.

  The image forming program according to claim 4 is an image forming program for performing image formation by laying out values of fields of user data described in a matrix format in a predetermined format, and performing a test printing process. When the host device receives from the host device setting information indicating whether or not to output the contents of the field set for each field column for user data to be printed together with the user data, the setting information A determination step for determining whether or not the user data can be output for each field column, and a control step for performing control for printing in a format that cannot be read for a field for which the determination result in the determination step cannot be output. Each processing is executed by a computer.

  According to the image forming system of the first aspect, personal information can be prevented from leaking from the printed matter during the trial printing process.

  According to the image forming system of the second aspect, since different passwords can be set for each field, personal information can be protected step by step at the stage of trial printing or for each operator.

  According to the image forming system of the third aspect, since the user data can be managed by the hash value, it is possible to guarantee the identity of the data at the time of data registration and the actual printing.

  According to the image forming program of the fourth aspect, personal information can be prevented from leaking from the printed matter during the trial printing process, and the original data can be edited or dummy data can be prepared for the trial printing. There is no need to do.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a system configuration diagram showing a configuration example of an image forming system according to the first embodiment of the present invention, for example, a variable print system. As shown in FIG. 1, a variable print system 10 according to the present embodiment has a system configuration including a client 20 that is a host device and a printer server 30 that is a printing device.

(Client configuration)
The client 20 includes a computer device such as a personal computer, and includes a data storage unit 21, an output enable / disable setting information input unit 22, and a print instruction unit 23.

  The data storage unit 21 stores user data. The user data is a CSV (Comma Separated Values) data file composed of a field column and each record row.

  The output enable / disable setting information input unit 22 outputs the contents of the field for each field column of the user data under the operation by the operator at the time of test printing (hereinafter referred to as “proof”), Set whether to output information for field columns. As a method of setting the information, there are a method of simply setting a flag for outputting / not outputting and a method of setting a password for whether printing (output) is permitted. In the case of a method for setting a password for printing permission / inhibition, a different password can be set for each field. At this time, passwords need not necessarily be set for all fields.

  The print instruction unit 23 instructs the printer server 30 to print by specifying user data, form data to be printed, and setting information set by the output enable / disable setting information input unit 22. As an example of the form designated for the printer server 30, the position of the font of the paper to be printed out, for example, a postal code column in the case of a postcard, can be cited.

(Printer server configuration)
The printer server 30 has functions of a variable data registration unit 31, a variable data analysis unit 32, a form registration unit 33, and a synthesis unit 34, and includes a printing unit 35 that is an image forming engine.

  In the printer server 30, each function unit of the variable data registration unit 31, variable data analysis unit 32, composition unit 33, and form registration unit 34 is configured by a computer device.

  FIG. 2 shows an example of the configuration of a computer device that constitutes the functional unit of the printer server 30. As shown in FIG. 2, the computer equipment constituting the functional unit 30A of the printer server 30 includes a CPU (Central Processing Unit) 301, an I / O circuit 302, a ROM 303, a RAM 304, and an HDD (Hard Disk Drive) device 305. These components are connected via a bus line 306.

  The CPU 301 controls various processes executed by the functional unit 30A of the printer 30. The I / O circuit 302 manages input / output between peripheral devices, specifically, the client 20 and the printing unit 35. The ROM 303 stores processing programs for various processes executed under the control of the CPU 301. The RAM 304 is a primary storage device used when various processes are executed, and functions as the variable data registration unit 31 and the like. The HDD 305 stores various data such as image data processed under the control of the CPU 301.

  Returning to FIG. In the printer server 30, the variable data registration unit 31 registers original user data input from the client 20 as variable data. The variable data analysis unit 32 confirms whether output of each field of the user data received the print instruction is enabled / disabled based on the setting information of output enable / disable input from the client 20.

  The form registration unit 33 registers a paper form to be printed out. The synthesizing unit 34 takes in a form corresponding to the form data designated by the print instruction unit 23 of the client 20 from the form registration unit 33, performs overlay processing of the form and user data, and outputs it to the printing unit 35.

  The printing unit 35 prints out the user data subjected to overlay processing by the combining unit 34 as variable data on the form paper designated by the print instruction unit 23 of the client 20.

(Description of operation)
Next, the operation of the variable print system 10 according to the first embodiment having the above configuration will be described with reference to the flowcharts of FIGS. 3 to 6.

<Data registration>
At the time of data registration, as shown in the flowchart of FIG. 3, first, whether or not to output (print) the content of the value of the field for each field column for the user data, that is, whether output is possible or not is possible. Setting is performed (step S11), and then user data is transmitted to the printer server 30 together with setting information for enabling / disabling the output of the field sequence (step S12). Subsequently, field information output enable / disable setting information and user data are registered in the variable data registration unit 31 of the printer server 30 (step S13).

<Proof printing>
At the time of proof printing, as shown in the flowchart of FIG. 4, first, a printing instruction for proof printing is given (step S21). The print instruction is performed by designating user data and a form from the print instruction unit 23. The user data is specified by transmitting the user data file name / user data ID / user data itself to the printer server 30. The form is specified at the same time as user data registration or at the time of printing instruction.

  Next, the variable data analysis unit 32 confirms output enable / disable information (setting information) for each field column of user data (step S22). Details of the output enable / disable information confirmation process will be described later.

  Subsequently, the user data number i is set first (step S23), and then the i-th (i = 1) user data form is overlaid to perform printing processing (step S24). Details of this printing process will be described later.

  Subsequently, it is determined whether or not the processing of the last user data is completed (step S25). If the processing of the last user data is not completed, the user data number i is incremented (step S26), and then Then, the process proceeds to step S24, and the process of overlaying and printing the i-th user data form is repeated until the process of the last user data is completed.

<Confirmation of output enable / disable information>
In the above-described confirmation processing of output enable / disable information for each field column of user data (step S22), as shown in the flowchart of FIG. 5, first, the field number j is set first (step S31), and then Based on the output enable / disable information set by the client 20, it is determined whether or not the output enable is set for the j-th (j = 1) field (step S32).

  In this determination, when it is determined that the output enabled setting is made, the jth field is processed as output enabled (step S33), and when it is determined that the output disabled setting is set, j The second field is processed as output impossible (step S34). Then, it is determined whether or not the confirmation of the last field is completed (step S35). If the confirmation of the last field is not completed, the field number j is incremented (step S36), and thereafter, the process proceeds to step S32. The process for confirming whether output is possible or not is repeated until confirmation of the last field is completed.

<Print processing>
In the printing process (step S24) in which the form of the i-th user data is overlaid, as shown in the flowchart of FIG. 6, first, the designated form is printed (step S41), and then the field to be processed at present. It is determined whether or not can be output (step S42).

  In this determination, when it is determined that the output is possible, the field data is processed as a normal output (step S43), and when it is determined that the output is impossible, the field data is processed as a dummy output (step S44). For fields that cannot be output, dummy output is performed in a form that cannot be read, such as face-down characters. Then, it is determined whether or not the user data output process has been completed (step S45). If not, the process returns to step S42 to determine whether or not the field currently being processed can be output. The process is repeated until it is determined that the user data output process has been completed.

  In this way, at the time of proof (trial print) printing, for each field column of user data, information (output enable / disable information) on whether or not to output the contents of the field is set for the field column. If the field data is divided into normal output and dummy output based on the setting information for enabling / disabling the output, it is necessary to set the output disabling information for personal information fields such as addresses and telephone numbers to be protected. Dummy output is performed in a form that cannot be read, such as hidden characters.

  For example, the hidden characters at the time of dummy output (dummy printing) are output with the same number of characters as the actual character string. Moreover, it is possible to use a code conversion table for the hidden characters at the time of dummy output. As an example, half-width spaces can be left unconverted, all 0-9 can be converted to 0, and all lowercase / uppercase letters can be converted to x / X.

<Production printing>
When the print instruction is issued from the client 20 during the actual printing, the printer server 30 determines that all fields can be output, and performs printing by overlaying the form. In order to prevent omission of data output at the time of actual printing, it is preferable to output a list sheet at the top of the print result for a field for which dummy output has been performed.

(Modification)
In the series of processes described above, the setting of output enable / disable information for each field column of user data is not particularly mentioned, but when password information is set as output enable / disable information, for example, It becomes a processing.

  In each process of data registration in FIG. 3 and proof printing in FIG. 4, processing is performed using the output enable / disable information as password information. In the proof printing process of FIG. 4, a printing instruction is performed by designating user data, a form, and a password group from the printing instruction unit 23.

  The user data is specified by transmitting the user data file name / user data ID / user data itself to the printer server 30. The form is specified at the same time as user data registration or at the time of printing instruction. The password is specified when printing is instructed.

<Confirming password information>
In the password information confirmation process for each user data field column, as shown in the flowchart of FIG. 7, first, the field number j is set first (step S51), and then the j-th (j = 1) field. In step S52, it is determined whether or not a password is set at the time of data registration.

  Here, when it is determined that the password has been set, it is determined whether or not the password set at the time of data registration matches any of the password groups designated from the print instruction unit 23 at the time of proof printing ( Step S53). In this determination, when it is determined that they match, the j-th field is processed as output possible (step S54), and when it is determined that they do not match, the j-th field is processed as output disabled (step S55).

  Then, it is determined whether or not the confirmation of the last field is completed (step S56). If the confirmation of the last field is not completed, the field number j is incremented (step S57), and thereafter, the process proceeds to step S52. The confirmation process of password information is repeated until the last field is confirmed after the migration.

<Print processing>
The printing process is the same as the flowchart in FIG. However, in step S44, if the password set at the time of data registration matches one of the password groups designated from the print instruction unit 23 at the time of proof printing, that is, the field that cannot be output is in an unreadable form such as a hidden character. Perform dummy output.

<Production printing>
At the time of actual printing, if all passwords are added and a printing instruction similar to that at the time of proof printing is given, it is determined by the variable data analysis unit 32 that all fields can be output, and printing is performed by overlaying the form. In order to prevent omission of data output at the time of actual printing, it is preferable to output a list sheet at the top of the print result for a field for which dummy output has been performed.

[Second Embodiment]
FIG. 8 is a system configuration diagram showing an example of the configuration of an image forming system according to the second embodiment of the present invention, for example, a variable print system. In FIG. 8, the same parts as those in FIG. Yes.

  The variable print system 40 according to the present embodiment differs from the variable print system 10 according to the first embodiment in the configuration of the printer server 30 ′ in the system configuration including the client 20 and the printer server 30 ′.

  That is, the printer server 30 ′ has a function of the hash calculation unit 36 in addition to the functions of the variable data registration unit 31, variable data analysis unit 32, form registration unit 33, and composition unit 34. The hash calculator 36 calculates a hash value for each field column of user data. Here, the hash value is a numerical value obtained from a hash function. The hash function refers to an operation for obtaining a numerical value representing the data when given data or a function for obtaining such a numerical value.

  The variable data analysis unit 32 confirms whether or not output is possible for each field column of the user data that has received the print instruction based on the setting information on whether or not output is possible and is input from the client 20, and the hash calculation unit 36. The hash value for each field column of the user data recalculated in (1) is compared with the hash value calculated by the hash calculation unit 36 at the time of data registration. Here, for fields with different hash values, a warning is given on the assumption that there has been an unintended change in the data, and a process for dummy output in an unreadable format such as a hidden character is performed.

(Description of operation)
Next, the operation of the variable print system 40 according to the second embodiment having the above configuration will be described with reference to the flowcharts of FIGS. 9 and 10.

<Data registration>
At the time of data registration, as shown in the flowchart of FIG. 9, first, whether or not to output (print) the contents of the field for each field row is set for the user data, that is, whether output is possible or not is set. Next, the user data is transmitted to the printer server 30 together with the setting information indicating whether or not the field string can be output (step S62).

  Next, a hash value for each field column is calculated by the hash calculation unit 36 of the printer server 30 (step S63), and then the setting information for enabling / disabling the output of the field column and the variable data registration unit 31 of the printer server 30 are stored. The hash value for each field column and user data are registered (step S64).

<Proof printing>
The processing at the time of proof printing is basically the same processing flow as the flowchart of FIG. However, in step S22, the user data recalculated by the hash calculator 36 in addition to the process of checking the output enable / disable information (setting information) for each field column of the user data by the variable data analyzer 32. The hash value for each field is compared with the hash value at the time of data registration, and a process for issuing a warning and performing dummy output for a field with a different hash value is performed.

<Confirmation of output enable / disable information>
Here, the details of the process of confirming output enable / disable information and comparing hash values will be described with reference to the flowchart of FIG. First, the field number j is set to the first (step S71). Next, based on the output enable / disable information set by the client 20, the output enable is set for the jth field (j = 1). It is determined whether or not it is performed (step S72).

  If it is determined that the output enable setting has been made, the hash value of the jth field is recalculated (step S73), and whether or not the recalculated hash value matches the hash value at the time of data registration. Is determined (step S74). If it is determined that they match, the j-th field is processed as being outputable (step S75).

  On the other hand, if it is determined that there is a mismatch, that is, for fields with different hash values, a warning is given to indicate that there is a risk of unintended change of data, for example, data tampering (step S36). Is processed as being unusable (step S77). Even when it is determined in step S72 that output is disabled, the process proceeds to step S77 and the j-th field is processed as output disabled.

  Then, it is determined whether or not the confirmation of the last field is completed (step S78). If the confirmation of the last field is not completed, the field number j is incremented (step S79), and thereafter, the process proceeds to step S72. The process of confirming output enable / disable information and comparing hash values is repeated until the final field confirmation is completed.

<Print processing>
The printing process is the same as the flowchart in FIG. However, in step S44, dummy output is performed in a format that cannot be read, such as hidden characters, for fields for which output is disabled or fields with different hash values.

<Production printing>
During actual printing, it is determined that all fields can be output. Further, a hash value for each field of user data is calculated, and hash values at the time of data registration are compared. For fields with different hash values, a warning is given that there has been an unintended change in the data, and dummy output is performed in an unreadable format such as a hidden character. Then, printing is performed by overlaying the form. In order to prevent omission of data output at the time of actual printing, it is preferable to output a list sheet at the top of the print result for a field for which dummy output has been performed.

  Also in this embodiment, similarly to the modification of the first embodiment, it is possible to perform processing by setting password information as output enable / disable information.

[Third Embodiment]
FIG. 11 is a system configuration diagram showing a configuration example of an image forming system according to the third embodiment of the present invention, for example, a variable print system. In FIG. 11, the same parts as those in FIG. Yes. In the present embodiment, a case where password information is set as output enable / disable information will be described as an example.

  The variable print system 50 according to the present embodiment differs from the variable print system 40 according to the second embodiment in the configuration of the printer server 30 ″ in the system configuration including the client 20 and the printer server 30 ″.

  That is, the printer server 30 ″ has a function of an encoding unit 37 in addition to the functions of the variable data registration unit 31, the variable data analysis unit 32, the form registration unit 33, the synthesis unit 34, and the hash calculation unit 36. The encoding unit 37 encodes the hash value of each field of user data calculated by hashing with the information set by the output enable / disable setting information input unit 22 in the field.

  The variable data analysis unit 32 analyzes the encoded portion of the user data that has received the print instruction. Analysis is performed in the same way as when user data is registered. That is, user data is obtained from the variable data registration unit 31, decoding is performed a plurality of times with a plurality of password information input by the print instruction unit 23, and the results and the encoding result registered in the variable data registration unit 31 Compare Here, if all the comparison results are different, a dummy output process is performed in an unreadable form such as a hidden character.

(Description of operation)
Next, the operation of the variable print system 50 according to the third embodiment having the above configuration will be described with reference to the flowcharts of FIGS. 12 and 13.

<Data registration>
At the time of data registration, as shown in the flowchart of FIG. 12, first, the setting of whether or not to output (print) the contents of each field row for the user data, that is, output enable / disable is set. Next, the user data is transmitted to the printer server 30 together with the setting information indicating whether the output of the field sequence is enabled or disabled (step S82).

  Next, the hash calculation unit 36 of the printer server 30 calculates a hash value for each field sequence (step S83), then sets the field number j to the first (step S84), and then the jth (j = 1). In the field), it is determined whether a password is set (step S85). If a password is set, each hash value is encoded with the password set in each field to obtain an encoded value (step S86). If no password is set, the hash value is used as an encoded value as it is (step S87).

  Next, it is determined whether or not the confirmation of the last field is completed (step S88). If the confirmation of the last field is not completed, the field number j is incremented (step S99), and then step S85 is performed. The process of obtaining the encoded value is repeated until the confirmation of the last field is completed. When the confirmation of the last field is completed, the encoded value for each field column and the original user data are registered in the variable data registration unit 31 (step S90).

<Proof printing>
The processing at the time of proof printing is basically the same processing flow as the flowchart of FIG. Specifically, in step S21, a print instruction is performed by designating user data, a form, and a password group from the print instruction unit 23. The user data is specified by transmitting the user data file name / user data ID / user data itself to the printer server 30. The form is specified at the same time as user data registration or at the time of printing instruction. The password is specified when printing is instructed.

<Confirmation of output enable / disable information>
In step S22, output enable / disable information is confirmed by performing recalculation of the hash value and comparison with the encoded value at the time of data registration. Details of the processing will be described with reference to the flowchart of FIG.

  First, the field number j is set to the first (step S91), then the hash value of the jth (j = 1) field is recalculated (step S92), then the recalculated hash value and data registration It is determined whether or not the current encoded value matches (step S93). At this time, if it is determined that they match, the j-th field is processed as being outputable (step S94).

  On the other hand, if it is determined that the recalculated hash value does not match the encoded value at the time of data registration, either the encoded value obtained by encoding the recalculated hash value with the password group specified by proof printing, and the data It is determined whether or not the encoded value at the time of registration matches (step S95). At this time, if it is determined that they match, the process proceeds to step S94, and the j-th field is processed as output enabled. If it is determined that there is a mismatch, the j-th field is processed as being unusable (step S96).

  Then, it is determined whether or not the confirmation of the last field is completed (step S97). If the confirmation of the last field is not completed, the field number j is incremented (step S98), and thereafter, the process proceeds to step S92. The process of recalculating the hash value and comparing it with the encoded value at the time of data registration is repeated until the confirmation of the last field is completed.

<Print processing>
The printing process is the same as the flowchart in FIG. However, in step S44, the field for which output is disabled, that is, the recalculated hash value does not match the encoded value at the time of data registration, and the encoded value encoded with the password group specified by proof printing is not included. For fields that do not match any of them, dummy output is performed in a format that cannot be read, such as hidden characters.

<Production printing>
At the time of actual printing, if all passwords are added and a printing instruction similar to that at the time of proof printing is given, the variable data analysis unit 32 determines that output is possible for all fields. If there is a field that was not outputable here, it means that there was a password error or an unintended data change. Finally, the form is overlaid and printing is performed. In order to prevent omission of data output at the time of actual printing, it is preferable to output a list sheet at the top of the print result for a field for which dummy output has been performed.

  In the variable print system according to the first to third embodiments described above, a series of processes for variable data analysis executed by the printer servers 30, 30 ', 30 "are performed by the printer servers 30, 30', 30". An image forming program to be executed by a computer device constituting the functional unit 30A (see FIG. 2) is the image forming program according to the present embodiment.

  Here, it is conceivable that the image forming program according to the present embodiment is installed in advance in the ROM 303 of the computer device constituting the functional unit 30A of the printer server 30, 30 ′, 30 ″. It is not limited to being installed in advance in the ROM 303 of the present invention, but may be provided (distributed) by wired or wireless communication means, or may be provided by being stored in a computer-readable storage medium such as a CD-ROM. Is possible.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in each said embodiment, Each said embodiment in the range which does not deviate from the summary of invention. Various modifications or improvements can be added to the above, and forms with such modifications or improvements are also included in the technical scope of the present invention. For example, in each of the above embodiments, the case where the present invention is applied to a variable print system has been described as an example. However, the present invention is not limited to application to a variable print system, and is applicable to all image forming systems that perform proof (trial print) printing. Applicable.

1 is a system configuration diagram illustrating a configuration example of a variable print system according to a first embodiment of the present invention. FIG. 3 is a block diagram illustrating an example of a configuration of a computer device that constitutes a functional unit of a printer server. It is a flowchart which shows an example of the process sequence at the time of the data registration which concerns on 1st Embodiment. It is a flowchart which shows an example of the process sequence at the time of the proof printing which concerns on 1st Embodiment. It is a flowchart which shows an example of the procedure at the time of the confirmation of the output enable / disable information which concerns on 1st Embodiment. 6 is a flowchart illustrating an example of a processing procedure during print processing according to the first embodiment. It is a flowchart which shows an example of the process sequence at the time of confirmation of the password information which concerns on the modification of 1st Embodiment. It is a system block diagram which shows the structural example of the variable print system which concerns on 2nd Embodiment of this invention. It is a flowchart which shows an example of the process sequence at the time of the data registration which concerns on 2nd Embodiment. It is a flowchart which shows an example of the procedure at the time of the confirmation of the output possible / impossible information which concerns on 2nd Embodiment. It is a system block diagram which shows the structural example of the variable print system which concerns on 3rd Embodiment of this invention. It is a flowchart which shows an example of the process sequence at the time of the data registration which concerns on 3rd Embodiment. It is a flowchart which shows an example of the procedure at the time of the confirmation of the output possible / impossible information which concerns on 3rd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10, 40, 50 ... Variable print system, 20 ... Client, 21 ... Data storage part, 22 ... Output enable / additional setting information input part, 23 ... Print instruction | indication part, 30, 30 ', 30 "... Printer server, 31 ... Variable data registration unit, 32 ... variable data analysis unit, 33 ... form registration unit, 34 ... composition unit, 35 ... printing unit, 36 ... hash calculation unit, 37 ... encoding unit

Claims (3)

An image forming system for forming an image by laying out values of each field of user data described in a matrix format in a predetermined format,
When performing the test print process, and setting means for setting information indicating not output or outputs the contents of the fields for each field column for the user data to be printed,
Determining means for determining whether the user data can be output for each field column based on the setting information by the setting means;
A printing unit that prints the user data in a format that cannot be read for a field in which a determination result by the determination unit cannot be output ;
Hash calculation means for calculating a hash value for each field column of the user data;
With
The determination means compares the hash value for each field column of user data calculated by the hash calculation means at the time of printing instruction with the hash value calculated by the hash calculation means at the time of data registration, and based on the comparison result An image forming system characterized by determining whether output is possible or not for each field row . The image forming system according to claim 1, wherein the setting information by the setting unit is password information. An image forming program for performing image formation by laying out values of respective fields of user data described in a matrix format in a predetermined format,
In the upper apparatus when performing test printing process, a setting information indicating whether not output or outputs the contents of the fields set for each field column for the user data to be printed, from the host apparatus together with said user data When received
A determination step of determining whether the user data can be output for each field column based on the setting information; and
A control step for performing control for printing in a format that cannot be read for a field in which the determination result in the determination step cannot be output ;
Causing the computer to execute each process with a hash calculation step of calculating a hash value for each field column of the user data ;
The determination step compares the hash value for each field column of the user data calculated at the hash calculation step at the time of printing instruction with the hash value calculated at the hash calculation step at the time of data registration, and based on the comparison result An image forming program for determining whether output is possible or not for each field row .

Images