JPH10835A - Printing method and print system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the image quality by storing the correction data of printer control along with the storing date thereof and interrupting the control with that data when a predetermined time has not yet elapsed after the storing date otherwise requesting to reset the correction data thereby eliminating a trouble caused through the use of a data after elapsing the predetermined time. SOLUTION: A printer 1 connected with a computer terminal 2 is set with a print set value 232 and a data of print density for each nozzle read out by means of a reader 3 is analyzed in order to determine the variation from a predetermined density pattern to be printed. A date data is then referred and if a predetermined time has not yet elapsed after acquiring an HS data, head shading is executed with reference to the print set value 212 otherwise the control is interrupted by requesting to reset the HS data. According to time arrangement, a trouble caused through the use of a data after elapsing the predetermined time is eliminated and a high quality image can be printed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printing method and a printing system for printing an image on a print medium by controlling a printer by a control device.

[0002]

2. Description of the Related Art In general, in a printing apparatus using a print head which discharges ink from an ink flow path forming a plurality of nozzles, the shape of the ink flow path forming the nozzles during the manufacturing process is slightly varied, and recording is performed. A change may occur in the ejection amount of the ink as the agent, and density unevenness may appear in a printing result such as printing. As a correction method for making such density unevenness inconspicuous, head shading (H
A technique called S) is known.

FIG. 8 is a schematic block diagram of an apparatus for actually performing head shading.
First, a conventional head shading technique in a case where three systems of reading, image processing, and printing are configured in one apparatus will be described.

In FIG. 8, a document exposure system 801 is a portion for reading a document, and corresponds to a portion for reading a print result of a print density pattern such as a print required for performing head shading. The image processing unit 802 performs a calculation or the like on an image read by the document exposure system 801 and includes functions of color processing, binarization processing, and head shading. An image forming unit 803 is read by the document exposure system 801 and is
2 is a part for printing the image processed by
Print heads 804 to 80 for printing images
Seven. 804 is a head for discharging black ink,
Reference numeral 805 denotes a head for discharging cyan ink, 806 denotes a head for discharging magenta ink, and 807 denotes a head for discharging yellow ink.

In the printing apparatus having such a configuration, in order to examine the output characteristics of each of the print heads 804 to 807 of the image forming unit 803, first, each of the print heads 80 to 807 is checked.
A predetermined test pattern image is printed using these so that images 4 to 807 form a fixed density, and the print result is read by the document exposure system 801. The read data read by the document exposure system 801 is used by the image processing unit 802 to create HS data 808. The HS data 808 is stored in each print head 8
Data for correcting the output density of ink from the ink flow path forming a plurality of nozzles in each of 04 to 807. The HS data 808 is used by the original exposure system 8 in order to make the aforementioned density unevenness less noticeable.
01 is used as correction data for the image data input from the image forming unit 01, and the image in which the density unevenness is eliminated is formed by the image forming unit 80.
3 will print.

[0006]

However, in the system configuration shown in FIG. 8, when head shading is performed to make the correction to make the density unevenness inconspicuous, the density unevenness described above changes due to the temporal change of the print head. If it does, the HS data may not be able to cope with the aging of the head, and there is a possibility that proper data correction may not be possible.

An object of the present invention is to provide a printing method and a printing system capable of improving the quality of a printed image by avoiding a problem caused by controlling a printer using correction data that has passed a predetermined time or more after acquisition. Is to provide.

[0008]

According to a first aspect of the present invention, there is provided a printing method for printing an image on a print medium by controlling a printer by a control device, comprising: correction data relating to the control of the printer; The storage date and time when the data is stored is stored in a storage device, and when controlling the printer, the correction data and the storage date and time are read from the storage device, and when a predetermined time or more has not elapsed since the storage date and time, The printer is controlled using the correction data, and when a predetermined period or more has elapsed from the storage date and time, a reset of the correction data is requested and the control of the printer is interrupted.

According to a second aspect of the printing method of the present invention, there is provided a printing method for printing an image on a print medium by controlling a printer by a control device, the correction data relating to the control of the printer, and the storage date and time when the correction data is stored. Is stored in a storage device, and when controlling the printer, the correction data and the storage date and time are read from the storage device, and when a predetermined time or more has not elapsed from the storage date and time, the correction data is used. And controlling the printer when the predetermined time has elapsed from the storage date and time without using the correction data.

[0010] A first embodiment of the printing system of the present invention is as follows.
In a printing system for controlling a printer by a control device to print an image on a print medium, a storage device for storing correction data related to control of the printer, a storage date and time for storing the correction data, and Reading means for reading the correction data and the storage date and time from the storage device, means for controlling the printer using the correction data when a predetermined time has not elapsed from the storage date and time, Means for requesting resetting of the correction data when a predetermined time has elapsed, and means for interrupting control of the printer when a predetermined time has elapsed from the storage date and time. Features.

A second embodiment of the printing system according to the present invention comprises:
In a printing system that controls a printer by a control device to print an image on a print medium, a storage device that stores correction data related to control of the printer, a storage date and time when the correction data is stored, and a storage device that controls the printer. Reading means for reading the correction data and the storage date and time from the storage device, means for controlling the printer using the correction data when a predetermined time has not elapsed from the storage date and time, Means for continuing control of the printer without using the correction data when a predetermined time or more has elapsed.

According to the present invention, the date and time when the correction data relating to the control of the printer is acquired is stored, and when a predetermined time or more has elapsed from the date and time, the control failure caused by using the correction data is eliminated. To avoid.

[0013]

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

(First Embodiment) FIG. 1 is a schematic perspective view of a printer system to which the present invention can be applied. A color barcode printer 1 as a printing apparatus used in the present system has a plurality of nozzles. A print head having an ink flow path to be formed is used.
(A) and (b) show. As the print head,
Head 704 for ejecting black ink, head 703 for ejecting cyan ink, head 7 for ejecting magenta ink
02, four types of heads 701 for discharging yellow ink. FIG. 7B is a representative perspective view of the head 701. In FIG. 7B, reference numeral 706 denotes a plurality of ejection ports for ejecting ink.

In FIG. 1, a bar code printer 1 and
A computer terminal device 2 that can perform image processing and transfer, an image scanner 3 as a reading device, and a storage device 4 that stores the above-described correction HS data for correcting an output image are connected by a connection cable 5. .

FIG. 3 is a flowchart for explaining the operation from the measurement of the output characteristics of the print head of the bar code printer 1 as a printing apparatus to the creation of HS data necessary for performing image correction. First, a predetermined density pattern is printed by each of the print heads 701 to 704 in order to detect density unevenness of a print image (step S301).

The density pattern is a print pattern in which each of the print heads 701 to 704 forms an image having a constant density per unit area in a print area such as printing. 7
A pattern was used in which the print density was 50%. Then, print the result of the density pattern
Reading is performed by the reading device 3 connected to the computer terminal device 2 (step S302), density unevenness of a print image by each of the print heads 701 to 704 is detected, and HS data is created based on the data (step S303).

FIGS. 2A and 2B are explanatory diagrams of the relationship between the printer 1 and the contents stored in the storage device 4. FIG. Here, the print heads for cyan, magenta, yellow, and black ink of the printer 1 are represented as HC, HM, HY, and HB.

The storage device 4 has a computer terminal device 2
Print heads HC, HM,
HS data 207, 208, 209, 2 for HY and HB
10 is provided, and a data attribute unit 206 that stores the date and time when each piece of HS data was acquired as date and time data 211 is provided. The data section 204 and the data attribute section 206 are collectively referred to as an HS table. The printer 1 has a print setting value 2 unique to printing.
12 is set. The print setting value 212 is
For example, it is a print range or a print margin setting value. FIG. 2B shows the data attribute unit 20 shown in FIG.
6, one of the data sections 204 is shown as a representative.

As described above, each print head HC,
Since HM, HY, and HB are provided with an ink flow path that forms a plurality of nozzles, it is necessary to know the degree of print density corresponding to each nozzle. Therefore, the read data obtained from the reading device 3, that is, the read data of the print result of the above-described predetermined density pattern is analyzed, and the predetermined print density pattern to be printed at a fixed density is compared with the actual print density. Detect if there is a change in

Next, using the flowchart of FIG.
The operation of creating the S data and the HS table will be described.

First, in order to associate read data obtained from the reading device 3, that is, read density data of a print result of the above-described predetermined density pattern with each nozzle of each print head, the resolution of the read density data, The resolution of the printer must be equivalent. Therefore, the resolution of the read density data is converted into the resolution of the printer. Here, the read density data for one line of the reading device 3 is associated with the nozzles of each print head.

Therefore, in order to associate the print density corresponding to the nozzle of each print head with the read density data of the reading device 3, a nozzle position cutout process (step S401) is performed. Here, the reading device 3
In the read density data obtained from, since the rise and fall of the read density change at the boundary between the print area such as printing and the non-print area becomes gentle, the interval from the first nozzle to the last nozzle of each print head is read. It is difficult to assign to density data. Therefore, attention is paid to the rising and falling portions of the read density change, and the first nozzle is statistically detected from the read density data, and the other nozzles are sequentially associated with the first nozzle. .

Next, an average value of the read density data corresponding to each nozzle is determined for each print head (step S402), and is used in calculating a correction value later. Next data shift processing (step S40)
3) is a process corresponding to the fact that the reading density data from the reading device 3 changes due to the difference in the recording material ejected from each print head. That is, if there is a large difference in the average value of the read density data for each print head, the correction effect described later greatly changes for each print head. Change the value to the same value. As a result, it is possible to suppress the correction effect from being changed by each print head.

In the next weighting process (step S404), the reliability of the value itself of the data performed in the previous cutout process (step S401), that is, the read density data associated with each nozzle is determined. This is a process for improving data values by weighting surrounding data values before and after the data value of interest, thereby enabling more accurate processing of data values corresponding to each nozzle. The read density data for each nozzle obtained in this way is compared with the average value of the read density data for each print head previously obtained, and the difference between them is calculated.
Then, HS data for each print head is created from the result (step S406).

Further, the date and time when the HS data was obtained is registered in the data attribute unit 206 as date and time data 211 (step S407), and an HS table is created (step S408). This HS table is stored in the storage device 4 connected to the computer terminal device 2, and performs head shading by referring to and searching the data attribute unit 206.

Next, an example of a head shading processing operation using such an HS table will be described with reference to FIG.

First, the image data requested to be output from the computer terminal device 2 is converted into image data in a form in which head shading can be executed (step S501), and the date and time data 211 registered in the data attribute unit 206 is converted. With reference to (step S502), if the elapsed time is longer than a preset elapsed time after the acquisition of the HS data, a request for resetting the HS data is made (steps S503 and S510), and the process is performed. The process ends (step S511). This is because when the density unevenness appearing in the print result changes due to the change over time of each print head, the HS that has passed a certain time or more after the acquisition has been obtained.
This is to prevent a problem caused by performing the head shading using the data, that is, a problem that the position of the density unevenness changes and the correction has an adverse effect.

If the predetermined elapsed time has not elapsed since the acquisition of the HS data, the print setting value 212 registered in the printer 1 is referred to (step S504), and the head shading is executed. (Step S505).

Head shading (step S50)
In the execution of 5), arithmetic processing is performed on the image data divided for each print head in order to equalize the print density of the image corresponding thereto. That is, H
The difference between the average value of the density data for each print head in the S data and the density data of each nozzle was obtained, and head shading was performed based on the difference, and the density data of the target nozzle was thinner than the average value. In this case, the print density of the nozzle is increased, while when the print density is higher than the average value, the print density of the nozzle is reduced. At this time, depending on the type of print head used in the printer, for example, it is necessary to perform head shading in consideration of print setting values 212 such as a print area and margin settings. The processing is executed with reference to the print setting value 212. The print setting values will be described later together with the second embodiment.

After the above-described head shading processing (step S511), the color processing unit performs processing such as output γ correction, masking processing, and gray processing (step S506). If the printer is a binary printer, after performing a binarization process (step S507) represented by a dither method and an error diffusion method, the data is transferred to the printer (step S508).
Printing is performed (step S509).

(Second Embodiment) Next, referring to FIG.
Another example of the head shading processing operation using the S table will be described.

First, an image requested to be output from the computer terminal device 2 is converted into an image form in which head shading can be executed (step S601). Further, referring to the date and time data 211 registered in the data attribute unit 206 (step S602), if the elapsed time is longer than a preset elapsed time after the HS data is obtained, the head shading is performed. Processing (Step S6)
05) is omitted, and the process proceeds to step S606 described below. This is because, when the density unevenness appearing in the print result changes due to the change over time of each print head, a problem caused by performing head shading using HS data that has passed a certain time or more after acquisition, that is, the density This is to prevent a problem that the correction has an adverse effect due to a change in the position of the spot.

If the predetermined elapsed time has not elapsed since the acquisition of the HS data, a print setting value registered in the printer 1 is referred to (step S).
604), and execute head shading (step S605).

Here, the print setting value 212 will be described.

When the printer 1 is a so-called full-line type printer, that is, as shown in FIG. 9, the printer 1 is provided with a print head H extending in the width direction of the print medium S, While transporting
If the printer prints an image on the print medium S by discharging ink from each nozzle N of the print head H, the print range L1-A,
L2-B, and margins L1-B and L2-B of the print
The nozzle N to be used changes according to the set value of. Therefore, such a set value is set in advance as a print set value 212, and by using the set value 212, the corresponding HS data is assigned to the nozzle N to be used, and an appropriate head shading is performed. Can be executed.

Head shading (step S60)
In the execution of 5), arithmetic processing for equalizing the print density of the image corresponding to the image data divided for each print head is performed. That is,
When the difference between the average value of the density data for each print head in the HS data and the density data of each nozzle is obtained, head shading is performed based on the difference, and the density data of the target nozzle is lower than the average value. In the process, the print density of the nozzle is increased, while if the print density is higher than the average value, the print density of the nozzle is reduced.

After the above-described head shading processing (step S605), processing such as output γ correction, masking processing, and gray processing is performed by the color processing unit (step S606). If the printer is a binary printer, after performing a binarization process (step S607) represented by a dither method and an error diffusion method, the data is transferred to the printer (step S608).
Printing is performed (step S609).

The present invention can be widely applied to a print system including a computer terminal device 2 capable of editing print data transferred to a printer, and includes a printer, a computer terminal device 2, and a reading device 3. Is not particularly limited.

As a method of determining HS data and a color process and a binarization process in a process of causing a printer to perform a printing operation by the computer terminal device 2, conventionally known methods can be used. Was omitted. Of course, the method and procedure for those processes are not limited at all. (Others) In addition, the present invention includes a means (for example, an electrothermal converter or a laser beam) for generating thermal energy as energy used for performing ink ejection, particularly in an ink jet recording method. The present invention brings about an excellent effect in a print head and a printing apparatus of a type in which a change in the state of ink is caused by energy. This is because according to such a method, it is possible to achieve higher density and higher definition of recording.

The typical configuration and principle are described in, for example, US Pat. Nos. 4,723,129 and 4,740.
It is preferable to use the basic principle disclosed in the specification of Japanese Patent No. 796. This method is a so-called on-demand type,
Although it can be applied to any type of continuous type, in particular, in the case of the on-demand type, it can be applied to a sheet holding liquid (ink) or an electrothermal converter arranged corresponding to the liquid path. By applying at least one drive signal corresponding to the recorded information and giving a rapid temperature rise exceeding the nucleate boiling, heat energy is generated in the electrothermal transducer, and film boiling occurs on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal on a one-to-one basis.
This is effective because air bubbles inside can be formed. The liquid (ink) is ejected through the ejection opening by the growth and contraction of the bubble to form at least one droplet. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of a liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. Further, if the conditions described in US Pat. No. 4,313,124 relating to the temperature rise rate of the heat acting surface are adopted, more excellent recording can be performed.

As the configuration of the recording head, in addition to the combination configuration (a linear liquid flow path or a right-angle liquid flow path) of a discharge port, a liquid path, and an electrothermal converter as disclosed in the above-mentioned respective specifications. U.S. Pat. No. 4,558,333 and U.S. Pat. No. 44,558 which disclose a configuration in which a heat acting portion is arranged in a bending region.
A configuration using the specification of Japanese Patent No. 59600 is also included in the present invention. In addition, Japanese Unexamined Patent Application Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal converter for a plurality of electrothermal converters. The effect of the present invention is effective even if the configuration is based on JP-A-59-138461, which discloses a configuration corresponding to a discharge unit. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

Further, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium on which a recording apparatus can record. Such a recording head may have a configuration that satisfies the length by a combination of a plurality of recording heads, or a configuration as one integrally formed recording head.

In addition, even in the case of the serial type as described above, a recording head fixed to the apparatus main body or an electric connection with the apparatus main body or ink from the apparatus main body is mounted by being mounted on the apparatus main body. The present invention is also effective when a replaceable chip-type recording head that can be supplied or a cartridge-type recording head in which an ink tank is provided integrally with the recording head itself is used.

It is preferable to add ejection recovery means for the recording head, preliminary auxiliary means, etc., since the effects of the present invention can be further stabilized. If these are specifically mentioned, the recording head is heated using capping means, cleaning means, pressurizing or suction means, an electrothermal transducer, another heating element or a combination thereof. Pre-heating means for performing the pre-heating and pre-discharging means for performing the discharging other than the recording can be used.

The type and number of recording heads to be mounted are not limited to those provided only for one color ink, for example, and for a plurality of inks having different recording colors and densities. A plurality may be provided. That is, for example, the printing mode of the printing apparatus is not limited to a printing mode of only a mainstream color such as black, but may be any of integrally forming a printing head or a combination of a plurality of printing heads. The present invention is also very effective for an apparatus provided with at least one of the recording modes of full color by color mixture.

In addition, in the embodiment of the present invention described above, the ink is described as a liquid.
An ink that solidifies at room temperature or below and softens or liquefies at room temperature may be used, or the ink jet method controls the viscosity of the ink by adjusting the temperature of the ink itself within the range of 30 ° C to 70 ° C. Is generally controlled so as to be within the stable ejection range, so that the ink may be in a liquid state when the use recording signal is applied. In addition, in order to positively prevent temperature rise due to thermal energy by using it as energy for changing the state of the ink from a solid state to a liquid state, or to prevent evaporation of the ink, the ink is solidified in a standing state and heated. May be used. In any case, the application of heat energy causes the ink to be liquefied by the application of the heat energy according to the recording signal and the liquid ink to be ejected, or to start solidifying when it reaches the recording medium. The present invention is also applicable to a case where an ink having a property of liquefying for the first time is used. In such a case, the ink is disclosed in JP-A-54-56847 or JP-A-60
As described in JP-A-71260, a configuration may be adopted in which a liquid or solid substance is held in a concave portion or through hole of a porous sheet and opposed to an electrothermal converter. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition, embodiments of the present invention include, in addition to those used as image output terminals of information processing equipment such as computers, copying apparatuses combined with readers and the like,
Further, a facsimile apparatus having a transmission / reception function may be used.

[0049]

As described above, the present invention stores the date and time when the correction data for the printer is obtained, and when the predetermined time or more has passed since the date and time,
It is possible to print a high-quality image free from density unevenness or the like by avoiding control problems caused by using the correction data.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a printing system to which the present invention can be applied.

FIG. 2A is a schematic configuration diagram of a first embodiment of the present invention, and FIG. 2B is an explanatory diagram of an HS table.

FIG. 3 is a flowchart illustrating an operation of creating HS data according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of creating an HS table according to the first embodiment of the present invention.

FIG. 5 is a flowchart illustrating a printing operation according to the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating a printing operation according to a second embodiment of the present invention.

FIG. 7A is a side view of a printer applicable to the present invention, and FIG. 7B is an enlarged perspective view of the print head.

FIG. 8 is a schematic configuration diagram for explaining a conventional print system.

FIG. 9 is an explanatory diagram of the print setting values shown in FIG.

[Explanation of symbols]

 1 Barcode Printer 2 Computer Terminal Device 3 Image Scanner 4 Storage Device 5 Connection Cable 204 HS Table 206 Printer ID (Identification Data) 207 Correction HS Data (Cyan) 208 Correction HS Data (Magenta) 209 Correction HS Data (Yellow) ) 210 Correction HS data (black) 211 Date and time data 212 Print set value 701 Print head (yellow) 702 Print head (magenta) 703 Print head (cyan) 704 Print head (black)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H04N 1/23 101 B41J 3/04 101Z 1/401 H04N 1/40 101A

Claims (20)

[Claims] In a printing method for printing an image on a print medium by controlling a printer by a control device, correction data relating to control of the printer and storage date and time when the correction data is stored are stored in a storage device, When controlling the printer, the correction data and the storage date and time are read from the storage device, and when a predetermined time has not elapsed from the storage date and time,
Controlling the printer using the correction data, and when a predetermined period or more has elapsed from the storage date and time,
A print method for requesting resetting of the correction data and interrupting the control of the printer. 2. A printing method for printing an image on a print medium by controlling a printer by a control device, wherein correction data relating to the control of the printer and a storage date and time at which the correction data is stored are stored in a storage device. When controlling the printer, the correction data and the storage date and time are read from the storage device, and when a predetermined time has not elapsed from the storage date and time,
Controlling the printer using the correction data, and when a predetermined period or more has elapsed from the storage date and time,
A printing method, wherein the control of the printer is continued without using the correction data. 3. The printing method according to claim 1, wherein the correction data is correction data relating to control for each print element of the printer. 4. The printing method according to claim 1, wherein the correction data is correction data relating to a print density for each print element of the printer. 5. The correction data is correction data relating to a print density for each print element of the printer, and the correction data is a print result when the printer prints an image of a predetermined density pattern on a print medium. 5. The printing method according to claim 1, wherein the printing method is obtained based on read data. 6. The printer is set with setting data relating to setting of printing conditions of the printer, and when controlling the printer using the correction data, the setting data is used together with the correction data. The printing method according to any one of claims 1 to 5, wherein the printer is controlled. 7. When printing an image on the print medium, the image is printed using a plurality of the printing elements arranged in the width direction of the print medium while conveying the print medium in the length direction. Wherein the correction data is correction data relating to a print density for each of the print elements; the setting data is a set value of a print area for the print medium; and the print located in the print area based on the set data. 7. The printing method according to claim 6, wherein the corresponding correction data is assigned to an element. 8. When printing an image on the print medium, the image is printed using a plurality of the printing elements arranged in the width direction of the print medium while transporting the print medium in the length direction. The correction data is correction data relating to a print density for each of the print elements.The setting data is a set value of a print margin for the print medium.Based on the set data, the correction data is located outside a print margin. The printing method according to claim 6, wherein the corresponding correction data is assigned to a printing element. 9. The printing method according to claim 1, wherein the plurality of printing elements of the printer constitute an ink jet head for discharging ink. 10. The printing method according to claim 9, wherein the ink jet head includes an electrothermal converter that causes film boiling of the ink to eject the ink. 11. A printing system for printing an image on a print medium by controlling a printer by a control device, a storage device for storing correction data relating to control of the printer, a storage date and time when the correction data is stored, and the printer When controlling, the reading means for reading the correction data and the storage date and time from the storage device, and when a predetermined time or more has not elapsed from the storage date and time,
Means for controlling the printer using the correction data; means for requesting resetting of the correction data when a predetermined period has elapsed from the storage date and time; and wherein a predetermined time has elapsed from the storage date and time. Means for interrupting the control of the printer when the printer is in use. 12. A printing system for printing an image on a print medium by controlling a printer by a control device, a storage device for storing correction data related to control of the printer, a storage date and time when the correction data is stored, and the printer When controlling, the reading means for reading the correction data and the storage date and time from the storage device, and when a predetermined time or more has not elapsed from the storage date and time,
Means for controlling the printer using the correction data, and means for continuing control of the printer without using the correction data when a predetermined time has elapsed from the storage date and time. Features a printing system. 13. The storage device according to claim 11, wherein the storage device stores, as the correction data, correction data relating to control for each print element of the printer.
3. The printing system according to 2. 14. The storage device according to claim 11, wherein the storage device stores, as the correction data, correction data relating to a print density for each print element of the printer.
Or the printing system according to 12. 15. The storage device stores, as the correction data, correction data relating to a print density for each print element of the printer, and prints when the printer prints an image of a predetermined density pattern on a print medium. The print system according to claim 11, further comprising: a reading device that reads a result; and a unit that obtains the correction data based on data read by the reading device. 16. A setting means provided in the printer, for setting setting data relating to setting of print conditions of the printer; and when controlling the printer using the correction data, the setting data together with the correction data. 16. A printing system according to claim 11, further comprising: means for controlling the printer by using a printer. 17. A printing apparatus, comprising: transport means for transporting the print medium in a length direction, a plurality of the print elements being arranged in a width direction of the print medium, the storage device stores the print elements as the correction data. Correction data for each print density is stored; the setting means sets a set value of a print area for the print medium as the setting data; and the correction means sets the set value in the print area based on the set data. 17. The printing system according to claim 16, wherein the corresponding correction data is assigned to the printing element located. 18. A printing apparatus, comprising: transport means for transporting the print medium in a length direction, a plurality of the print elements arranged in a width direction of the print medium, and the storage device stores the print elements as the correction data. Correction data for each print density, the setting unit sets a setting value of a print margin for the print medium as the setting data, and the correction unit sets the print margin based on the setting data. 17. The printing system according to claim 16, wherein the corresponding correction data is assigned to the print element located outside. 19. The printing system according to claim 11, wherein the plurality of printing elements of the printer constitute an ink jet head for discharging ink. 20. The print system according to claim 19, wherein the ink jet head has an electrothermal converter that causes film boiling of the ink to eject the ink.