JP4655057B2 - Display terminal and print control program - Google Patents

Description

  The present invention relates to a display terminal and a print control program.

In recent years, networking has progressed, and contents such as articles in newspapers and magazines are placed on the network as digital information as well as paper media, and it has become common to browse this on a computer screen. A system has also been proposed in which such content is downloaded to a portable display terminal and subscribed offline (see, for example, Patent Document 1).
JP 2001-265936 A

  By the way, articles in newspapers and magazines are current information, and even if the issuer provides the digital information, there is a demand that the publisher does not want to be printed and distributed for a certain period of time. In particular, such a demand is strong when contents are distributed for a fee. In order to prevent content from being viewed by many people by connecting the portable display terminal to the projector and projecting the content from the projector, the output of the content is limited to the display of the portable display terminal. There is also. However, when printing or the like can be output from the portable display terminal, the content in the downloaded display terminal can be freely output for printing or the like, and thus printed articles cannot be avoided.

  The present invention has been made to solve the above problem, and an object of the present invention is to provide a display terminal and a program for restricting output such as printing of downloaded content for a certain period.

In order to achieve the above object, a display terminal according to claim 1 of the present invention is a display terminal having a display screen for displaying content composed of an image or a document, and is an electronic device for content to be displayed on the display screen. Content information acquisition means for acquiring content information as data, and information regarding a period during which printing of the content acquired by the content information acquisition means is prohibited, after the content is acquired by the content information acquisition means Print prohibition period information acquisition means for acquiring print prohibition period information which is information of relative time from a predetermined timing, print instruction input means for inputting a print instruction for the content, and clock means for measuring the current date and time The date and time when the content was acquired by the content information acquisition means is acquired from the clock means. Content acquisition date acquisition means, print instruction date acquisition means for acquiring from the clock means the date and time when the content printing instruction was input by the print instruction input means, and content acquisition acquired by the content acquisition date acquisition means Printable date / time calculating means for calculating the date / time when the content can be printed from the date / time and the print prohibition period information acquired by the print prohibition period information acquiring means, and the date / time for changing the current date / time measured by the clock means When the current date and time is changed by the changing means and the date and time changing means, the difference calculating means for calculating the difference between the date and time before the change and the date and time after the change, based on the difference calculated by the difference calculating means, and correction means for correcting the printable date calculated by the printable time calculating means, the print instruction by the print instruction input means When it is a force, the a printable date modified by said modifying means, compares the print instruction date and time acquired by the print instruction time acquisition unit, has elapsed print prohibition period indicated by the print prohibition period information A determination unit that determines whether or not printing is possible based on whether or not printing is possible, and if the determination unit determines that printing is possible, print data of the content is generated or a printing apparatus is instructed The printing apparatus further comprises print data creating means for creating print data of the content.

According to a second aspect of the present invention , there is provided a display terminal having a display screen for displaying content composed of an image or a document, wherein content information which is electronic data of content to be displayed on the display screen is displayed. Content information acquisition means to be acquired and information relating to a period during which printing of the content acquired by the content information acquisition means is prohibited, relative to a predetermined timing after the content is acquired by the content information acquisition means Print prohibition period information storage means for storing print prohibition period information, which is time information, for each content type, and printing for acquiring print prohibition period information according to the type of content to be printed from the print prohibition period information storage means Prohibition period information acquisition means, print instruction input means for inputting an instruction to print the content, A determination unit that determines whether printing is possible based on whether a print prohibition period indicated by the print prohibition period information has elapsed when a print instruction is input by the print instruction input unit; and the determination unit Print data creation means for creating the print data of the content or creating the print data of the content in the printing device by instructing the printing device when it is determined that printing is possible. It is characterized by that .

According to a third aspect of the present invention , there is provided a display terminal having a display screen for displaying content made up of images or documents, wherein content information that is electronic data of content to be displayed on the display screen is displayed. Content information acquisition means to be acquired and information relating to a period during which printing of the content acquired by the content information acquisition means is prohibited, relative to a predetermined timing after the content is acquired by the content information acquisition means Print prohibition period information storage means for storing print prohibition period information, which is time information, for each content type, and printing for acquiring print prohibition period information according to the type of content to be printed from the print prohibition period information storage means Prohibition period information acquisition means, print instruction input means for inputting an instruction to print the content, A determination unit that determines whether printing is possible based on whether a print prohibition period indicated by the print prohibition period information has elapsed when a print instruction is input by the print instruction input unit; and the determination unit And a print instruction transmitting means for transmitting a print instruction for the content to a printing apparatus when it is determined that printing is possible .

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect of the invention, the display terminal includes a print prohibition period information storage unit that stores the print prohibition period information for each content type, The print prohibition period information acquisition unit acquires the print prohibition period information corresponding to the type of content to be printed from the print prohibition period information storage unit.

Further, the display terminal according to claim 5 of the present invention, in addition to the configuration of the invention according to claim 3 , content acquisition date and time acquisition means for acquiring the date and time when the content is acquired by the content information acquisition means, Print instruction date acquisition means for acquiring the date and time when the content printing instruction was input by the print instruction input means, content acquisition date acquired by the content acquisition date acquisition means, and print prohibition period information acquisition means acquired A printable date / time calculating means for calculating a date / time when the content can be printed from print prohibition period information; and a clock means for measuring the current date / time, wherein the determining means is calculated by the printable date / time calculating means. The printable date and time printed and the print instruction date and time acquired by the print instruction date and time acquisition unit are compared to determine whether or not printing is possible. And, wherein the content acquisition date and time acquisition means acquires the content acquisition time from said clock means, said print instruction time acquisition unit, and acquires the print instruction time from said clock means.

According to a sixth aspect of the present invention, in addition to the configuration of the fifth aspect , the display terminal includes a date / time changing means for changing a current date / time measured by the clock means, and a current date / time by the date / time changing means. A difference calculating unit that calculates a difference between the date and time before the change and the date and time after the change, and a correcting unit that corrects the printable date and time based on the difference calculated by the difference calculating unit. It is characterized by that .

According to a seventh aspect of the present invention, in addition to the configuration of the invention according to any one of the first to sixth aspects , the print prohibition period information acquisition unit is configured to transmit the print prohibition period information via a network. It is characterized by acquiring .
In addition to the configuration of the invention described in claim 1 or 2, the print data creation unit creates the print data of the content and creates the print data by the print data creation unit. The printing apparatus further includes a print instruction transmission unit that transmits the print instruction of the content to the printing apparatus by transmitting the printed data to the printing apparatus.

The print control program according to claim 9 of the present invention is acquired by a content information acquisition step of acquiring content information which is electronic data of content to be displayed on a display screen provided in a display terminal , and the content information acquisition step. Printing prohibition period information for acquiring printing prohibition period information that is information on a relative period from a predetermined timing after the content is acquired by the content information acquisition step. An acquisition step, a content acquisition date and time acquisition step of acquiring the date and time when the content was acquired by the content information acquisition step from a clock unit that measures the current date and time, and a print instruction input unit that inputs an instruction to print the content An instruction to print the content is input The printing of the content from the print instruction date acquisition step that acquires the date and time from the clock means, the content acquisition date acquired by the content acquisition date acquisition step, and the print prohibition period information acquired by the print prohibition period information acquisition step The difference between the date before and after the change when the current date is changed by the printable date calculation step for calculating the date and time when the date and time can be changed and the date and time change means for changing the current date and time measured by the clock means A difference calculation step for calculating the printable date and time, a correction step for correcting the printable date and time calculated by the printable date and time calculation step based on the difference calculated by the difference calculation step, and a print instruction input by the print instruction input means The printable date and time corrected by the correction step, and the A determination step of comparing whether or not printing is possible based on whether or not a print prohibition period indicated by the print prohibition period information has passed, and comparing the print instruction date and time acquired in the print instruction date acquisition step; A print data creation step for creating print data of the content or causing the print device to create print data of the content by instructing the printing device when it is determined that printing is possible in the determination step; Let the computer run.

The print control program according to claim 10 of the present invention is acquired by a content information acquisition step of acquiring content information which is electronic data of content to be displayed on a display screen provided in a display terminal , and the content information acquisition step. Information regarding a period during which printing of the content is prohibited, and is information for each type of content, which is information of a relative time from a predetermined timing after the content is acquired by the content information acquisition step. A print prohibition period information acquisition step for acquiring print prohibition period information corresponding to the type of content to be printed from the stored print prohibition period information storage means, and a print instruction input means for inputting an instruction to print the content When entered, the print prohibition indicated by the print prohibition period information is displayed. A determination step for determining whether or not printing is possible based on whether or not a period has elapsed; and if the determination step determines that printing is possible, print data for the content is created or a printing apparatus To instruct the computer to execute a print data creation step for causing the printing apparatus to create print data of the content.

In the display terminal according to claim 1 of the present invention, the content information acquisition unit acquires the content information, and the print prohibition period information acquisition unit acquires the print prohibition period information related to the period during which the printing of the content information is prohibited. . Then, when a print instruction is input by the print instruction input unit, whether or not printing is possible is determined based on whether or not the print prohibition period indicated by the print prohibition period information has passed. Therefore, printing of the downloaded content can be restricted until a preset print prohibition period elapses. Further, the content acquisition date and time acquisition unit acquires the date and time when the content was acquired, and the print instruction date and time acquisition unit acquires the date and time when the content printing instruction was input. Then, the printable date / time calculating means calculates the date / time when the content can be printed from the content acquisition date / time and the print prohibition period information. Further, it is determined whether printing is possible by comparing the printable date and time calculated in this way with the print instruction date and time. Therefore, printing of the downloaded content can be restricted as a print prohibition period for a certain period from the date and time when the content is acquired. Further, since the clock means measures the current date and time, the content acquisition date and time can be acquired from the current date and time when the content is acquired, and the print instruction date and time can be acquired from the current date and time when the print instruction is input. When the current date / time is changed, a difference before and after the change is calculated, and the difference is added to or subtracted from the printable date / time. Therefore, it is possible to prevent the printable date and time from being reached early by changing the current time.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the content acquisition date and time acquisition unit acquires the date and time when the content is acquired, and the print instruction date and time acquisition unit acquires the content. Get the date and time when the print instruction was input. Then, the printable date / time calculating means calculates the date / time when the content can be printed from the content acquisition date / time and the print prohibition period information. Further, it is determined whether printing is possible by comparing the printable date and time calculated in this way with the print instruction date and time. Therefore, printing of the downloaded content can be restricted as a print prohibition period for a certain period from the date and time when the content is acquired. Further, since the print prohibition period information is stored in the print prohibition period information storage means, it is possible to cope with a case where it is desired to uniformly prohibit printing for a certain period. In addition, since the print prohibition period information is stored in the print prohibition period information storage unit for each content type, the print prohibition period can be set to be longer or shorter depending on the type of content.

In the display terminal according to claim 3 of the present invention, the content information acquisition unit acquires the content information, and the print prohibition period information acquisition unit displays the print prohibition period information regarding the period during which the printing of the content information is prohibited. get. Then, when a print instruction is input by the print instruction input unit, whether or not printing is possible is determined based on whether or not the print prohibition period indicated by the print prohibition period information has passed, and it is determined that printing is possible. In the case of printing, a printing instruction is transmitted to the printing apparatus. Therefore, printing of the downloaded content can be restricted until a preset print prohibition period elapses. Further, since the print prohibition period information is stored in the print prohibition period information storage means, it is possible to cope with a case where it is desired to uniformly prohibit printing for a certain period. In addition, since the print prohibition period information is stored in the print prohibition period information storage unit for each content type, the print prohibition period can be set to be longer or shorter depending on the type of content.

Further, the display terminal according to claim 4 of the present invention stores the print prohibition period information in the print prohibition period information storage means in addition to the effect of the invention according to claim 1, so that the display terminal uniformly has a fixed period. It can be used when printing is prohibited. In addition, since the print prohibition period information is stored in the print prohibition period information storage unit for each content type, the print prohibition period can be set to be longer or shorter depending on the type of content.
Further, in addition to the effect of the invention described in claim 3, the display terminal described in claim 5 of the present invention restricts printing of the downloaded content as a print prohibition period for a certain period from the date and time when the content is acquired. Can do. Further, since the clock means measures the current date and time, the content acquisition date and time can be acquired from the current date and time when the content is acquired, and the print instruction date and time can be acquired from the current date and time when the print instruction is input.

  Further, in the display terminal according to claim 5 of the present invention, in addition to the effect of the invention according to claim 4, the print prohibition period information storage means stores the print prohibition period information for each content type. Depending on the type of content, the printing prohibition period can be long or short.

Further, in addition to the effect of the invention according to claim 5 , the display terminal according to claim 6 of the present invention calculates the difference before and after the change when the current date is changed, The difference is corrected by adding or subtracting to the printable date and time. Therefore, it is possible to prevent the printable date and time from being reached early by changing the current time.

In addition to the effect of the invention according to any one of claims 1 to 6 , the display terminal according to claim 7 of the present invention acquires the print prohibition period information via the network in the same manner as the content information. . Accordingly, a print prohibition period unique to each piece of content information is set, and it is determined whether or not printing is possible by downloading the content information at the same time. Therefore, the print prohibition period can be set flexibly.

Also, display terminal according to claim 8 of the present invention, in addition to the effect of the invention according to claim 1 or 2, can send a print instruction to the printing apparatus when it is determined to be printed. Therefore, printing of the downloaded content can be restricted until a preset print prohibition period elapses.
Further, the printing control program according to claim 9 of the present invention can exhibit the operational effects as the various processing means of the invention according to claim 1 by being executed by a computer.
Further, the printing control program according to claim 10 of the present invention can exhibit the operational effects as the various processing means of the invention according to claim 2 by being executed by a computer.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the configuration of the display terminal of the present invention will be described with reference to FIG. The display terminal 1 is a portable terminal provided with the display unit 15, downloads content including characters and images from a network or an external device such as a PC, and causes the display unit 15 to display the content. Furthermore, it is possible to connect to the printing apparatus 2 and execute printing of the stored content. FIG. 1 is a block diagram showing an electrical configuration of the display terminal 1.

  As shown in FIG. 1, the display terminal 1 is provided with a CPU 10 that controls the display terminal 1. The CPU 10 temporarily stores a ROM 11 that stores a program for operating the display terminal 1 and various data. RAM 12 for storing automatically, EEPROM 13 storing a user ID or the like for identifying a user using display terminal 1, display controller 14 for controlling display unit 15, and input by the user An operation key 16, a USB controller 17 for connecting to other devices such as the printing device 2, a memory card controller 18 for connecting a memory card 19, and a clock 20 for measuring the current time are connected via a bus. It is connected. The memory card 19 is provided with an area for storing downloaded content information. The EEPROM 13 stores the printable date and time when each downloaded content can be printed in association with the content. As will be described later, the display terminal 1 may further include a timer.

  Next, processing in the display terminal 1 configured as described above will be described. In the display terminal 1, various processes are executed by the CPU 10 including a process of displaying content to be browsed according to a program stored in the ROM 11, and as a process related to the present invention, download of content to be browsed is performed. And a print instruction process for the printing apparatus 2 and a process for changing the time of the display terminal 1. Hereinafter, description will be made in order with reference to FIGS. FIG. 2 is a flowchart of the download process. FIG. 3 is a flowchart of the print instruction process. FIG. 4 is a flowchart of the time change process.

  The download process shown in FIG. 2 is started when the display terminal 1 is connected to an external device such as a network or a PC, and a content download instruction is input from the operation keys 16. First, the target content requested to be downloaded and the print prohibition period information about the content are downloaded (S1). The printing prohibition period information is a relative period, and is determined for each content such as 10 days, and is stored in the content file or downloaded in a correlated state at the same time.

  Next, the downloaded content is stored in the memory card 19 in association with the print prohibition period information (S2). Next, the current time (CurrentTime) is acquired from the clock 20 (S3). Then, the print prohibition period (PrintEnableTerm) is acquired with reference to the print prohibition period information of the downloaded content (S4). Next, the date and time when the content can be printed (PrintableTime) is calculated by adding the print prohibition period acquired in S4 to the current time acquired in S3 (S5). Then, the calculated printable date and time is stored in the EEPROM 13 in association with the content (S6). By the above download process, the time when the downloaded content can be printed is calculated and stored in correspondence with the content. Therefore, it is determined whether or not to execute printing by referring to the print instruction. It will be possible (described later).

  In the above process, the content acquisition date and time is acquired by acquiring the current time from the clock 20 in S3. However, the time may also be downloaded when the content is downloaded in S1. Instead of downloading the print prohibition period information together with the content, the uniform print prohibition period information may be stored in the EEPROM 13 and the print prohibition period may be acquired by referring to the information. Instead of the uniform print prohibition period information, different print prohibition period information may be set and stored for each type of content (for example, for each genre such as news, novel, and entertainment article). Furthermore, instead of calculating and storing the printable date and time when downloading, start the timer when downloading, refer to the print prohibition period information when a print instruction is input, and compare it with the elapsed time of the timer It may be determined whether printing is possible.

  Next, the print instruction process will be described. The print instruction process shown in FIG. 3 is started when a print instruction is input to the document being displayed from the operation key 16. Note that a list of contents stored in the memory card 19 may be displayed and a print target may be selected and input. First, it is obtained by referring to the printable time (PrintableTime) of the print instruction target content calculated at the time of download (FIG. 2, S5) and stored in the EEPROM 13 (FIG. 2, S6) (S21). Next, the current time (CurrentTime) is acquired from the clock 20 (S22). The current time is not limited to acquisition from the clock 20, but the display terminal 1 may be acquired from a connection destination by connecting the display terminal 1 to a network or an external device.

  Next, it is determined whether or not the current time acquired in S22 exceeds the printable date and time acquired in S21 (S23). If the printable date / time has passed (S23: YES), the time determined by the print prohibition period information has already passed since the download, so print data is created from the content information of the content instructed to be printed ( S24), the created print data is transmitted to the printing apparatus 2 (S25), and the process is terminated. Here, the print data may be generated and transmitted by the display terminal 1 as described above, or only the print instruction is transmitted from the display terminal 1, connected to the server on the printing apparatus 2, and printed from the server. Data may be acquired and printing may be performed, or content information may be acquired from a server and expanded into print data by the printing apparatus 2 to execute printing.

  If the printable date / time has not been exceeded (S23: NO), the fact that printing is not possible is still displayed on the display unit 15 (S26), and the process ends.

  As described above, when the timer is started at the time of download, after the print instruction is input, the elapsed time is obtained from the timer instead of the processes of S21 and S22, and the elapsed time is acquired in the process of S23. It may be determined whether or not the print prohibition period (PrintEnableTerm) has been exceeded, and thereafter the same processing may be executed.

  Next, processing when the time of the clock 20 is changed by the user will be described. The time change process shown in FIG. 4 is started when a change instruction is input by the operation key 16 for the current time of the clock 20. First, the current time (CurrentTime) is acquired from the clock 20 (S41). The current time acquired here is the current time measured by the clock 20 when the change instruction is input. Next, the set time (SetTime) input by the operation key 16 is acquired (S42).

  Next, a difference (difference_time) between the current time acquired in S41 and the set time acquired in S42 is calculated (S43). Then, a content whose printable date and time is stored in the EEPROM 13 is searched, and a process for correcting the printable date and time for each content is performed (S44 to S46).

  First, it is determined whether there is content in the EEPROM 13 whose printable date / time has not been corrected (S44). This is because when there is no content that stores the printable date and time, there is no need for correction processing, and when there is content that has not yet been corrected, the processing is repeated. If there is unprocessed content (S44: YES), the printable date and time (PrintableTime) is corrected for the processing target content. Specifically, the difference calculated in S43 is added to the previous printable date and time to obtain a new printable date and time (S45). Then, the new printable date and time is stored in the EEPROM 13 (S46). The above processing is repeated until there is no unprocessed content (S44: YES). When there is no unprocessed content (S44: NO), the processing is terminated.

  In this way, by reflecting the changed time when the current time is changed in the printable date and time, printing can be performed from the download time while responding to the user's desire to maintain the accurate current time. Relative time can be maintained. Therefore, even if the user changes the current time of the clock 20 and tries to print earlier than the setting, the printable date and time will not be advanced.

  If the elapsed time is measured by a timer and the elapsed time is compared with the print prohibition period when a print instruction is input, the print prohibition period may be corrected by adding a difference when the current time is changed. Also, when an instruction is input to change the current time, it is searched whether there is content that has not yet reached the printable date and time in the EEPROM 13, and if there is at least one such content, the current time is changed. May not be accepted.

  As described above, according to the display terminal 1 of the above embodiment, the print prohibition period corresponding to each content is acquired as the relative time, and the date and time after the relative time from the download time is calculated as the printable date and time. It is stored in the EEPROM 13 corresponding to the content. When a print instruction is input, it is determined whether or not a printable date / time has arrived. If it has not arrived, execution of printing is disabled. Therefore, it is possible to prevent printing of content for which the relative time has not elapsed since downloading. Even when the current time indicated by the clock is changed, the printable date / time is recalculated and stored by adding the difference, so that the relative time from the download time to the printable date / time can be maintained.

  In the above embodiment, the operation key 16 corresponds to a print instruction input unit and a date / time changing unit of the present invention. The EEPROM 13 corresponds to the printing prohibition period information storage unit of the present invention. The CPU 10 that downloads the content and the print prohibition period information in S1 of FIG. 2 corresponds to the content information acquisition unit and the print prohibition period information acquisition unit of the present invention. Further, the CPU 10 that determines whether or not the printable date / time has been exceeded in S23 of FIG. 3 corresponds to the determination means of the present invention. Further, the CPU 10 that acquires the current time in S3 of FIG. 2 corresponds to the content acquisition date acquisition unit of the present invention. Further, the CPU 10 that acquires the current time in S22 of FIG. 3 corresponds to the print instruction date acquisition unit of the present invention. Further, the CPU 10 that calculates the printable date / time in S5 of FIG. 2 corresponds to the printable date / time calculating means of the present invention. Further, the CPU 10 that obtains the difference between the current time and the set time in S43 of FIG. 4 corresponds to the difference calculation means of the present invention. Further, the CPU 10 that corrects the printable date and time in S45 of FIG. 4 corresponds to the correcting means of the present invention.

  Moreover, although the said embodiment demonstrated the case where the output device was the printing apparatus 2, the output device of Claim 8 is not restricted to the above-mentioned printing apparatus 2. FIG. For example, a display output device that is simultaneously used by a large number of projectors or the like as an output device can be considered. In this case, if the present invention is applied, it can be prevented that the image is projected on a projector or the like and can be viewed by many people.

3 is a block diagram showing an electrical configuration of the display terminal 1. FIG. It is a flowchart of a download process. It is a flowchart of a print instruction process. It is a flowchart of a time change process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display terminal 2 Printing apparatus 10 CPU
13 EEPROM
15 Display 16 Operation Key 19 Memory Card 20 Clock

Claims (10)

A display terminal having a display screen for displaying content composed of images or documents,
Content information acquisition means for acquiring content information that is electronic data of content to be displayed on the display screen;
A print prohibition period, which is information related to a period during which printing of content acquired by the content information acquisition unit is prohibited, and is information on a relative time from a predetermined timing after the content is acquired by the content information acquisition unit Printing prohibition period information acquisition means for acquiring information;
A print instruction input means for inputting an instruction to print the content;
A clock means for measuring the current date and time;
Content acquisition date and time acquisition means for acquiring the date and time when the content was acquired by the content information acquisition means from the clock means;
A print instruction date acquisition unit that acquires, from the clock unit, a date and time when an instruction to print the content is input by the print instruction input unit;
A printable date / time calculating unit that calculates a date / time when the content can be printed from the content acquisition date / time acquired by the content acquisition date / time acquiring unit and the print prohibition period information acquired by the print prohibition period information acquiring unit;
Date and time changing means for changing the current date and time measured by the clock means;
When the current date and time is changed by the date and time changing means, a difference calculating means for calculating a difference between the date and time before the change and the date and time after the change,
Correction means for correcting the printable date and time calculated by the printable date and time calculation means based on the difference calculated by the difference calculation means;
When the print instruction is input by the print instruction input unit, the printable date and time corrected by the correction unit is compared with the print instruction date and time acquired by the print instruction date and time acquisition unit, and the print prohibition period information Determining means for determining whether or not printing is possible based on whether or not the printing prohibition period indicated by
Print data creation means for creating print data for the content by causing the printing apparatus to create print data for the content by creating the print data for the content or instructing the printing apparatus when the judgment means determines that printing is possible; A display terminal comprising:   A display terminal having a display screen for displaying content composed of images or documents,
  Content information acquisition means for acquiring content information that is electronic data of content to be displayed on the display screen;
  A print prohibition period, which is information related to a period during which printing of content acquired by the content information acquisition unit is prohibited, and is information on a relative time from a predetermined timing after the content is acquired by the content information acquisition unit Printing prohibition period information storage means for storing information for each type of content;
  Print prohibition period information acquisition means for acquiring print prohibition period information corresponding to the type of content to be printed from the print prohibition period information storage means;
  A print instruction input means for inputting an instruction to print the content;
  A determination unit that determines whether printing is possible based on whether a print prohibition period indicated by the print prohibition period information has elapsed when a print instruction is input by the print instruction input unit;
  Print data creation means for creating print data for the content by causing the printing apparatus to create print data for the content by creating the print data for the content or instructing the printing apparatus when the judgment means determines that printing is possible;
A display terminal comprising:   A display terminal having a display screen for displaying content composed of images or documents,
  Content information acquisition means for acquiring content information that is electronic data of content to be displayed on the display screen;
  A print prohibition period, which is information related to a period during which printing of content acquired by the content information acquisition unit is prohibited, and is information on a relative time from a predetermined timing after the content is acquired by the content information acquisition unit Printing prohibition period information storage means for storing information for each type of content;
  Print prohibition period information acquisition means for acquiring print prohibition period information corresponding to the type of content to be printed from the print prohibition period information storage means;
  A print instruction input means for inputting an instruction to print the content;
  A determination unit that determines whether printing is possible based on whether a print prohibition period indicated by the print prohibition period information has elapsed when a print instruction is input by the print instruction input unit;
  Print instruction transmission means for transmitting a print instruction for the content to a printing apparatus when the determination means determines that printing is possible;
A display terminal comprising:   Printing prohibition period information storage means for storing the printing prohibition period information for each content type;
  The display terminal according to claim 1, wherein the print prohibition period information acquisition unit acquires print prohibition period information corresponding to a type of content to be printed from the print prohibition period information storage unit.   Content acquisition date and time acquisition means for acquiring the date and time when the content was acquired by the content information acquisition means;
  A print instruction date and time acquisition unit for acquiring a date and time when an instruction to print the content is input by the print instruction input unit;
  A printable date / time calculating unit that calculates a date / time when the content can be printed from the content acquisition date / time acquired by the content acquisition date / time acquiring unit and the print prohibition period information acquired by the print prohibition period information acquiring unit;
  Clock means to measure the current date and time
With
  The determination unit determines whether or not printing is possible by comparing the printable date and time calculated by the printable date and time calculation unit and the print instruction date and time acquired by the print instruction date and time acquisition unit,
  The content acquisition date and time acquisition means acquires the content acquisition date and time from the clock means,
  The display terminal according to claim 3, wherein the print instruction date acquisition unit acquires the print instruction date from the clock unit.   Date and time changing means for changing the current date and time measured by the clock means;
  When the current date and time is changed by the date and time changing means, a difference calculating means for calculating a difference between the date and time before the change and the date and time after the change,
  Correction means for correcting the printable date and time based on the difference calculated by the difference calculation means;
The display terminal according to claim 5, further comprising:   The display terminal according to claim 1, wherein the print prohibition period information acquisition unit acquires the print prohibition period information via a network.   The print data creation means creates print data of the content,
  3. The printing apparatus according to claim 1, further comprising: a print instruction transmission unit that transmits the print instruction of the content to the printing apparatus by transmitting the print data generated by the print data generation unit to the printing apparatus. Display terminal according to.   A content information acquisition step of acquiring content information that is electronic data of content to be displayed on a display screen included in the display terminal;
  A print prohibition period, which is information regarding a period during which printing of the content acquired by the content information acquisition step is prohibited, and is information of a relative time from a predetermined timing after the content is acquired by the content information acquisition step A print prohibition period information acquisition step for acquiring information;
  A content acquisition date and time acquisition step of acquiring the date and time when the content was acquired by the content information acquisition step from a clock means for measuring the current date and time;
  A print instruction date acquisition step of acquiring, from the clock means, the date and time when the content print instruction was input by the print instruction input means for inputting the content print instruction;
  A printable date calculation step for calculating a date when the content can be printed from the content acquisition date acquired by the content acquisition date acquisition step and the print prohibition period information acquired by the print prohibition period information acquisition step;
  A difference calculating step of calculating a difference between the date before the change and the date after the change when the current date is changed by the date change means for changing the current date and time measured by the clock means;
  A correction step for correcting the printable date and time calculated by the printable date and time calculation step based on the difference calculated by the difference calculation step;
  When the print instruction is input by the print instruction input unit, the printable date and time corrected by the correction step is compared with the print instruction date and time acquired by the print instruction date and time acquisition step, and the print prohibition period information A determination step for determining whether or not printing is possible based on whether or not the printing prohibition period indicated by
  A print data creation step for creating print data for the content by causing the print device to create print data for the content by creating the print data for the content or instructing the printing device when it is determined that printing is possible in the determination step;
Print control program for causing a computer to execute.   A content information acquisition step of acquiring content information that is electronic data of content to be displayed on a display screen included in the display terminal;
  A print prohibition period, which is information regarding a period during which printing of the content acquired by the content information acquisition step is prohibited, and is information of a relative time from a predetermined timing after the content is acquired by the content information acquisition step A print prohibition period information acquisition step for acquiring print prohibition period information corresponding to the type of content to be printed from a print prohibition period information storage unit storing information for each type of content;
  Whether or not printing is possible based on whether or not a printing prohibition period indicated by the printing prohibition period information has passed when a printing instruction is input by a printing instruction input unit that inputs an instruction to print the content. A judgment step to judge;
  A print data creation step for creating print data for the content by causing the print device to create print data for the content by creating the print data for the content or instructing the printing device when it is determined that printing is possible in the determination step;
Print control program for causing a computer to execute.

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