JP3517561B2 - Printing apparatus and control method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus such as a laser beam printer for printing print data from a host computer and a control method therefor.

[0002]

2. Description of the Related Art Conventionally, in a printing apparatus (hereinafter referred to as a printer) such as a laser beam printer for printing print data transmitted from a host computer, the print data is analyzed and developed into a bitmap (hereinafter referred to as rendering). After finishing, start the printer engine. Activating the printer engine includes activating laser scanning, activating heaters, and transporting paper to the print start position. Printing is started after the above operation reaches a predetermined value of the printer and scanning of the drum by the laser beam becomes possible.

Further, there is a method called toner-saving printing for saving toner and printing, which is mainly used for test printing and layout check. In this printing method, for example, by printing only the outline of characters and figures,
Save toner. This toner-saving printing is often used for proofreading before main printing (normal printing).

[0004]

However, in the above conventional example, since the printer engine is started after the rendering is completed, the time from the start of the rendering to the start of the printing is

(Rendering time) + (Engine startup time)

However, there is a drawback that printing cannot be started unless the printer engine has been started. The present invention focuses on the fact that rendering is performed even during toner-saving printing, measures the rendering time during toner-saving printing, and instructs the engine start time in the case of normal printing from the measured time to solve the above problems. It is something to solve.

[0007]

In order to achieve the above object, the printing apparatus of the present invention has the following features.

[0008] A toner-saving printing device that saves the amount of toner and is capable of printing, and a measuring unit that measures the rendering time required to render the data to which the ID is added by the host computer at the time of toner-saving printing. And a storage unit that stores the rendering time together with the ID, and if the data to which the ID is added is printed with a normal toner amount, the ID is stored in the storage unit.
If the search means for searching from D and the search by the search means are successful, the rendering time stored with the searched ID is compared with the startup time required to start the print engine so that printing can be started immediately after the engine is started. An instruction means for instructing the start of rendering and engine activation is provided.

Preferably, when the rendering time is shorter than the start-up time, the instructing means instructs the rendering and the start of the engine start at substantially the same time.

More preferably, when the rendering time is longer than the engine start time, the instructing means calculates a time T obtained by subtracting the engine start time from the rendering time,
It is characterized in that the start of the engine is instructed after a lapse of time T from the start of rendering.

More preferably, the start-up time is the time required for the longest operation among the engine starting operations.

More preferably, the operation for starting the engine is
It is characterized by including scanner activation, heater activation, and paper conveyance to the print start position.

Further, the storage medium of the present invention has the following features in order to achieve the above object.

A method of controlling a printing apparatus capable of toner-saving printing, which saves the amount of toner, and measures the rendering time required to render data to which an ID has been added by a host computer during toner-saving printing. Measurement step, a storage step of storing the rendering time in the storage means together with the ID, and when printing the data to which the ID is added with a normal toner amount, the ID is retrieved from the ID stored in the storage means. If the search process and the search by the search process are successful, the rendering time stored together with the searched ID is compared with the startup time required to start the print engine, so that the printing can be started immediately after the engine startup, and the rendering and engine startup can be performed. And an instructing step for instructing to start.

More preferably, the instructing step includes the step of instructing the rendering and the start of engine activation at substantially the same time when the rendering time is shorter than the activation time.

More preferably, when the rendering time is longer than the engine start time, the instructing step calculates a time T obtained by subtracting the engine start time from the rendering time, and after the time T has elapsed from the start of rendering, the engine is started. It is characterized by including a step of instructing start of activation.

More preferably, the start-up time is the time required for the longest operation among the engine starting operations.

More preferably, the operation for starting the engine is
It is characterized by including scanner activation, heater activation, and paper conveyance to the print start position.

Further, the storage medium of the present invention has the following features in order to achieve the above object.

[0020] The computer used to control the saving and print apparatus capable toner save printing for printing a toner amount, the toner saving printing, the rendering time required to render the data ID is added by the host computer When measuring means for measuring, storage means for storing the rendering time together with the ID, and printing the data to which the ID is added with a normal toner amount, the ID is retrieved from the ID stored in the storage means. When the search by the search means is successful, the rendering time stored together with the searched ID is compared with the startup time required to start the print engine so that the printing can be started immediately after the engine is started. and an instruction means for instructing the start of activation to function
It is characterized by recording a program for .

More preferably, when the rendering time is shorter than the start-up time, the instructing means gives an instruction to start rendering and engine start at substantially the same time.

More preferably, when the rendering time is longer than the engine start time, the instruction means calculates a time T obtained by subtracting the engine start time from the rendering time,
It is characterized in that the start of the engine is instructed after a lapse of time T from the start of rendering.

More preferably, the start-up time is the time required for the longest operation among the engine starting operations.

More preferably, the operation for starting the engine is
It is characterized by including scanner activation, heater activation, and paper conveyance to the print start position.

Alternatively, the print data received from the external device
Memory and the time it took to render it
And the storage means in response to an instruction from the external device.
When reprinting the stored print data, the print data
Based on the rendering time stored for the data
Control hand to control the start timing of the printer engine
And a control means for controlling the rendering time and
Compare the startup time required to start the linter engine and
If the rendering time is shorter than the engine startup time
In case of the above, the control means controls rendering and engine startup.
Start at the same time and the rendering time is the engine
If it is longer than the start-up time, the control means is
Engine start after a predetermined time delay
Let it start.

[0026]

DETAILED DESCRIPTION OF THE INVENTION

(First embodiment)

According to the present invention, the rendering time is measured at the time of toner saving printing and the start of the printer engine is instructed to start the normal printing based on the time. Therefore, after performing the toner saving printing, the normal printing is performed on the same data. It is effective when you do.

As a printer applied to this embodiment,
A laser beam printer can be mentioned. Figure 1
A laser printer (hereinafter LB) applied to this embodiment
It is sectional drawing which shows the internal structure of P).

The LBP main body 1000 stores character information (character code) supplied from an externally connected host computer (201 in FIG. 2), form information, macro commands, and the like, and stores the corresponding character according to the information. A pattern, a form pattern, etc. are created, and an image is formed on a recording sheet which is a recording medium. Operation panel 1012
Are equipped with switches for operation and LED indicators.

The printer control unit 1001 is an LBP.
The whole 1000 is controlled and the character information etc. which are supplied from a host computer are analyzed. Printer control unit 1
001 mainly converts the character information into a video signal of a corresponding character pattern and outputs it to the laser driver 1002.

The laser driver 1002 is a circuit for driving the semiconductor laser 1003, and switches on / off of the laser light 1004 emitted from the semiconductor laser 1003 according to the input video signal. Laser light 1
The scanner 005 is horizontally swung by the scanner 1005 to scan the electrostatic drum 1006. As a result, the electrostatic drum 1
An electrostatic latent image of an image pattern is formed on 006. This electrostatic latent image is developed with toner by the developing unit 1007 around the electrostatic drum 1006.

On the other hand, the recording paper is stored in a paper cassette 1008 attached to the LBP 1000, and the paper feed roller 100
9 and the conveying rollers 1010 and 1011 take in the apparatus and supply the electrostatic drum 1006. The toner image on the electrostatic drum 1006 is transferred onto the conveyed recording sheet, and the toner is fixed by the heater and the roller in the fixing unit 1012.

FIG. 2 is a block diagram showing the printing apparatus of this embodiment.

The host computer 201 sends print data such as print data and control data to the printer 202.
Output to.

The printer 202 is the LBP main body 100 shown in FIG.
Although it corresponds to 0, a printer of a printing method such as another thermal transfer or ink jet may be used if appropriate. Printer 20
2 includes a communication control unit 203, a formatter analysis unit 204, a drawing memory 205, a printer engine 206, and a paper management unit 207 as main parts.

The communication control unit 203 communicates with the host computer 201.

The formatter analysis unit 204 analyzes the print data received from the host computer 201, renders page by page, and renders the drawing memory 20.
The rendered data (image data) is stored on the printer 5, and the image data is sent to the printer engine 206. The formatter analysis unit 204 includes a CPU, RAM, RO
It is composed of M (not shown) and the like. Formatter analysis unit 20
4 further includes a rendering time measuring unit 208, a rendering / start instruction unit 209, a registration memory 210,
And a search unit 211.

The rendering time measuring unit 208 measures the rendering time during toner-saving printing. Registration memory 2
10 stores the measured rendering time. The rendering and activation instruction unit 209 compares the rendering time stored in the registration memory 210 with the ID of the rendered data with the activation time of the printer engine 206, and instructs the activation timing of the printer engine 206. The search unit 211 searches whether the ID transmitted from the host computer 201 during normal printing is stored in the registration memory 210.

The drawing memory 205 stores the image data created by the formatter analysis unit 204 and transfers it to the printer engine 206. The drawing memory 205 is a RAM
Composed of.

The printer engine 206 has a printing function for forming a permanent image of image data.

The paper management unit 207 manages usable paper sizes and paper orientations and designates paper to the printer engine 206. The paper management unit 207 includes a CPU, a RAM, and an R.
It is composed of OM (not shown) and the like.

FIG. 3 is a flow chart for explaining the operation of the printer 202 according to the present invention during toner-saving printing, and FIG. 4 is a flow chart for explaining the operation of the printer 202 according to the present invention during normal printing. . In FIG. 3, steps such as processing and judgment on the side of the host computer 201 are represented by steps SH102, SH103, ...
H105, and steps such as processing and determination on the printer 202 side are defined as step SP101, step SP102, ... Step SP109. Similarly, in FIG. 4, steps such as processing and determination on the side of the host computer 201 are performed as steps SH201, SH202, ... Step SH.
203, and steps such as processing and determination on the printer 202 side are referred to as step SP201, step SP202, ... Step SP212.

First, the operation during toner-saving printing will be described with reference to FIG. The host computer 201 sends a toner save command to the printer 202 to start toner save printing (step SH101). next,
In response to this, the printer 202 shifts to the toner saving mode (step SP101). The toner saving mode of the printer 202 in this embodiment is executed by the hardware in the printer 202 (the processing for toner saving is not executed by software. Therefore, the rendering time is the same as the toner saving mode printing and the normal printing. It is the same at the time). Subsequently, the host computer 201 adds an ID for each page to the toner-saving printing data (step SH102). Next, the host computer 201 sends the ID added in step SH102 to the printer 202 (step SH103). Printer 20
2 registers the sent ID in the registration memory 210 in the printer 202 (step SP102).

Here, the registration memory 2 in the printer 202
10 will be described. In this embodiment, the memory is RA
The case of M will be described. The registration memory 21 shown in FIG.
A table of 0 is shown. The address section 301 indicates the address of the registration memory. For example, in the present embodiment, the registration memory has 256 addresses A to A + FFh. The ID registration unit 302 is a unit for registering an ID,
The rendering time registration unit 303 is a unit for registering the time required for rendering the print page, which will be described later.

In step SP102, the printer 202 sets the I
D is registered in the table of the registration memory 210 shown in FIG. For example, when the ID “0” is transmitted to the printer 202, the printer 202 writes the ID “0” in the ID registration unit 302 (302A in FIG. 5) for A of the address unit 301.

The host computer 201 sends the print data corresponding to the subsequently sent ID (step S).
H104). The formatter analysis unit 204 receives the print data and starts rendering of the print page based on the received print data (step SP103). Next, when the rendering is started, the rendering time measuring unit 208 starts measuring the rendering time (step SP104). The formatter analysis unit 204 ends the rendering for one page (step SP105)
Then, the rendering time measuring unit 208 also ends the rendering time measurement (step SP106). The formatter analysis unit 204 registers the measured rendering time in the rendering time registration unit 303 in the registration memory 210 (step SP107). For example, when the rendering time of the ID “0” is “x0”, the rendering time registration unit 303 for the address A, that is, “x0” to 303A.
To register.

Next, the address of the registration memory 210 is incremented (step SP108). The host computer 201 determines whether or not the next page is to be printed (step SH105). If the next page is to be printed, the process returns to step SH102 to add the ID of the next page, and then the ID added to the printer 202. It is sent (step SH103). The printer 202 determines whether or not the next page is printed (step SP109). If the next page is printed, the process returns to step SP102 and the ID sent from the host computer is written in the ID registration unit 302 in the registration memory 210. For example, ID is ID
In the case of “1”, the ID registration unit 302 corresponding to the incremented address A + 1, that is, 302 (A + 1)
Write D "1".

Then, as in the case of the ID "0", the processing from step SP103 to step SP109 is executed. For example, the rendering time of ID "1" is "x1"
Then, "x1" is registered in the rendering time registration unit 303 (A + 1) at the address A + 1.

The host computer 201 executes step S
If the next page is printed in H105, the operations of steps SH102 to SH105 are repeated as described above. Similarly, the printer 202 executes the step SP10.
If there is printing of the next page in step 9, the operation from step SP102 to step SP109 is repeated as described above, and the ID of the print page and the rendering time are written in the registration memory 210.

Step SH105 and step SP1
If the next page is not printed at 09, both the host computer 201 and the printer 202 end the toner-saving printing.

In the illustrated series of operations, the addresses of the registration memory are up to A + FFh, that is, 2
You can only register up to 56 pages. Therefore, 25
When printing a document with more than 6 pages, it is assumed that the address part 301 is managed by software so that if A + FFh is registered, the next address returns to A and is overwritten. Further, when a certain series of toner-saving document printing is executed, for example, when the document is completed in two pages and written in the addresses A and A + 1 on the registration memory 210, the next toner-saving printing is executed. It is assumed that the address part 301 is managed by the software so that the start address of the registration memory of (1) is A + 2. Note that the number of pages that can be registered is merely an example.

Next, the operation in the case of performing normal printing for print data that has been subjected to toner-saving printing will be described. The host computer 201 sends the ID and data added in step SH102 to the printer 202 (steps SH201 and SH202). Printer 2
02 receives the ID and data from the host computer 201 (step SP201), and searches the registration memory 210 for the same ID as the ID received by the search unit 211 (step SP202). As a result, if the same document ID as the print page ID exists,
The rendering / startup instruction unit 209 reads the rendering time for the ID (step SP203).
For example, when the ID is ID “0”, after checking the data ID registration unit 302A of the address A for the ID “0”, “x0” of the rendering time registration unit 303A of the address A is read.

Here, the printer 202 in the present embodiment
Is the longest time required to activate the scanner in the activation operation of the printer engine (for example, activation of the scanner, activation of the heater, conveyance of paper to the print start position, etc.).
The activation of the scanner means that the scanner reaches a specified rotation speed.

The rendering and activation instruction unit 209 determines whether the read rendering time is shorter than the scanner activation time (step SP204).

When the rendering time is shorter than the scanner activation time, the rendering and activation instruction unit 209 starts the rendering (step SP205) and at the same time instructs the scanner activation (step SP20).
6). Since the rendering is completed while the scanner is activated, printing can be started immediately after the activation of the scanner is completed (step SP210). In this way, when performing the normal printing of the same document printed by toner-saving printing and the rendering time is shorter than the startup time of the scanner, if the scanner startup and rendering are performed in parallel, The time required from the start to the start of printing is equal to the scanner startup time, and is shortened by the rendering time.

On the other hand, if it is determined in step SP204 that the rendering time is longer than the scanner startup time, the rendering and startup instruction unit 209

Time T = (rendering time read in step SP203)-(scanner startup time)

Is calculated (step SP207). Then, the rendering and activation instruction unit 209 starts rendering (step SP208) and simultaneously measures time (step SP209). When the time T has elapsed from the start of rendering, the time measurement is terminated (step S
P210), and immediately instructs the scanner to be activated (step SP206). In this case, since the scanner is started after the time T has passed, the rendering is completed when the startup of the scanner is completed, and the printing can be started immediately after the completion of the startup of the scanner (step SP213). Also in this case, the time required from the start of rendering to the start of printing is shortened by the scanner activation time. When the scanner activation time and the rendering time are the same, the process may proceed to step SP205 or step SP207. Next, in step SP202, the same ID
If it is determined that the file does not exist in the registration memory 210, the rendering and activation instruction unit 209 starts the rendering (step SP211), and after the rendering is completed (step SP212), issues an instruction to activate the scanner (step SP206). ). The printer 202 starts printing after the startup of the scanner is completed (step S
P213). In this case, the time required from the start of rendering to the start of printing is (rendering time + scanner start time).

.. On the other hand, if it is determined in step SH203 that the next page is to be printed, the host computer 20
1 returns to step SH202 and sends the ID and data of the next page to the printer 202. In response to this, the printer 202 executes the series of operations described above. If it is determined in step SH203 that the next page is not printed, the operation for printing is ended. The ID is not limited to the document ID, and may be an ID for each operator or host computer.

As described above, in the present embodiment, an ID for each page is added to print data during toner-saving printing, the ID is registered in the registration memory 210 in the printer 202, and the rendering time for that data is measured. The measured time is registered in the registration memory 210. In other words, the rendering time of the data printed by toner-saving printing
It is also stored in the registration memory 210 together with it. At the time of normal printing, the registration memory 210 is searched to determine whether or not there is the same ID, and if there is the same ID, the registered rendering time is read from the registration memory 210. Compare this rendering time with the printer engine startup time, and if the rendering time is longer than the startup time, start rendering (rendering time-
Instruct to start engine startup after (startup time) has elapsed.
By doing so, the start-up time can be shortened. On the other hand, when the rendering time is shorter than the startup time, the rendering time can be shortened by starting the engine immediately after starting the rendering.

[0061]

[Other Embodiments] In the first embodiment, the description has been made assuming that the scanner startup time is the longest among the printer engine startup operations, but other operations such as heater startup and It may take the longest time to convey the paper to the print start position. In such a case, the scanner activation in the first embodiment may be replaced with the corresponding operation. Even when the operation is replaced with another operation as described above, when the data to which the toner-saving printing is performed is normally printed, the time until the printing is completed can be shortened.

Even when the present invention is applied to a system composed of a plurality of devices (eg, host computer, interface device, reader, printer, etc.), a device composed of one device (eg, copying machine, facsimile). Device).

Another object of the present invention is to supply a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or apparatus, and to supply a computer (or CPU) of the system or apparatus.
It is needless to say that it can be achieved by reading and executing the program code stored in the storage medium.

In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD
-R, magnetic tape, non-volatile memory card, ROM, etc. can be used.

Further, by executing the program code read by the computer, not only the functions of the above-described embodiment are realized, but also the O step S running on the computer based on the instruction of the program code.
It goes without saying that this also includes the case where the (operating system) or the like performs a part or all of the actual processing and the processing realizes the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written in the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that a case where the CPU or the like included in the function expansion board or the function expansion unit performs some or all of the actual processing and the processing realizes the functions of the above-described embodiments is also included.

[0068]

As described above, according to the present invention,
An ID is provided for the data to be printed, the time required for rendering is measured during toner-saving printing, the ID and rendering time are stored, and when the data with the same ID is normally printed, the printer engine starts starting from the stored rendering time. By indicating the time and performing all or part of the rendering during the startup time, the time from the rendering to the printer starting printing can be shortened.

According to the present invention, the rendering time is measured at the time of toner-saving printing, and the start of the printer engine is instructed based on the measured data. Therefore, for example, the toner-saving printing is performed for test printing or layout check. This is effective when normal printing is performed on the same data after execution.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a laser printer applied to the present invention.

FIG. 2 is a block diagram showing a basic configuration of a host computer and a printer according to the first embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation during toner-saving printing according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation during normal printing according to the first embodiment of the present invention.

FIG. 5 is a registration memory 2 according to the first embodiment of the present invention.
It is a figure showing the chart of 10.

[Explanation of symbols]

201 Host computer 202 printer 203 Communication control unit 204 Formatter analysis unit 205 drawing memory 206 printer engine 207 Paper Management Department 208 Rendering measurement unit 209 Rendering and activation instruction unit 210 registration memory 211 Search section 301 Address part 302 ID registration unit 303 Rendering time registration unit

Claims (17)

(57) [Claims] 1. A printing apparatus capable of toner-saving printing, which saves toner amount while printing, and measures the rendering time required for rendering data to which an ID is added by a host computer during toner-saving printing. A measuring unit, a storage unit that stores the rendering time together with the ID, and a search unit that searches the ID stored in the storage unit when the ID-added data is printed with a normal toner amount. If the search is successful by the search means, the rendering time stored together with the searched ID is compared with the startup time required to start the print engine, and the rendering and engine startup are performed so that printing can be started immediately after the engine startup. A printing apparatus comprising: an instruction unit for instructing start. 2. The printing apparatus according to claim 1, wherein when the rendering time is shorter than the start-up time, the instructing unit gives an instruction to start rendering and engine start at substantially the same time. 3. When the rendering time is longer than the engine startup time, the instructing means calculates a time T obtained by subtracting the engine startup time from the rendering time, and the time T is set after the rendering is started. The printing apparatus according to claim 1, wherein the start of the engine is instructed after a lapse of time. 4. The printing apparatus according to claim 1, wherein the startup time is a time required for the longest operation among engine startup operations. 5. The printing apparatus according to claim 4, wherein the engine starting operation includes scanner starting, heater starting, and paper conveyance to a print start position. 6. A method of controlling a printing apparatus capable of performing toner-saving printing, which saves toner by printing, and a rendering time required for rendering data to which an ID is added by a host computer during toner-saving printing. Measuring step for measuring the
Together with a storing step of storing in the storing means, a search step of searching for the ID from the ID stored in the storing means when printing the data to which the ID is added with a normal toner amount, and a search by the searching step If the printing is successful, the rendering step stored together with the retrieved ID is compared with the startup time required to start the print engine, and an instruction step for instructing the start of the rendering and the engine startup so that printing can be started immediately after the engine startup. A control method comprising: 7. The control method according to claim 6, wherein the instructing step includes the step of instructing to start rendering and engine start at substantially the same time when the rendering time is shorter than the start time. 8. The instructing step, when the rendering time is longer than the engine startup time, calculates a time T obtained by subtracting the engine startup time from the rendering time, and the time T is set after the rendering is started. The control method according to claim 6, further comprising a step of instructing start of engine startup after a lapse of time. 9. The control method according to claim 6, wherein the starting time is a time required for the longest operation among the engine starting operations. 10. The control method according to claim 9, wherein the engine activation operation includes scanner activation, heater activation, and paper conveyance to a print start position. 11. A computer for controlling a printing apparatus capable of toner-saving printing, which saves toner and prints.
And the toner saving printing, and measuring means for measuring the rendering time required to render the data ID is added by the host computer, a storage means for storing the rendering time together with the ID, ID is additional data When printing with a normal toner amount, a search unit that searches the ID from the ID stored in the storage unit; and, if the search is successful by the search unit, a rendering time stored together with the searched ID. , by comparing the start time required for the print engine startup, to function as a instructing means for instructing to start rendering and engine start to allow start after the engine starts immediately printing
Computer capable of recording programs
Readable storage medium. 12. The storage medium according to claim 11, wherein when the rendering time is shorter than the start-up time, the instructing unit gives an instruction to start rendering and engine start at substantially the same time. 13. When the rendering time is longer than the engine startup time, the instructing means calculates a time T obtained by subtracting the engine startup time from the rendering time, and the time T is set after the rendering is started. 13. The storage medium according to claim 11, wherein the storage medium is instructed to start engine activation after a lapse of time. 14. The storage medium according to claim 11, wherein the startup time is a time required for the longest operation among engine startup operations. 15. The storage medium according to claim 14, wherein the engine starting operation includes scanner starting, heater starting, and paper conveyance to a print start position. 16. Storage means for storing print data received from an external device and time required for rendering the print data, and reprinting the print data stored in the storage means in response to an instruction from the external device. to, and control means for controlling the start timing of the printer engine based on the rendering time stored in correspondence with the print data
And the control means includes the rendering time and the printer engine.
Compared to the startup time required for startup, the rendering time is shorter than the engine startup time.
If not, the control means renders and starts the engine.
Start almost at the same time, and the rendering time is longer than the engine startup time.
If not, the control means does not start rendering.
The printing apparatus is characterized in that the engine is started after a predetermined time delay . 17. A storage step of storing print data received from an external device and a time required for rendering the same in a memory, and reprinting the print data stored in the memory according to an instruction from the external device. Occasionally, Bei and a control step of controlling the start timing of the printer engine based on the rendering time stored in correspondence with the print data
E, the control process is based on the rendering time and the printer engine.
Compared to the startup time required for startup, the rendering time is shorter than the engine startup time.
If not, the control process is rendering and engine startup.
Start almost at the same time, and the rendering time is longer than the engine startup time.
If not, the control process does not start rendering.
The printing method is characterized in that the engine is started after a predetermined time from the start of the engine .