JPH03259657A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To obtain a clear recording picture by providing plural kinds of record ing heads, selecting a recording head in use in response to kinds of the picture or the resolution so as to record the picture. CONSTITUTION:A recording head 14 has a resolution of 300dpi and a head 15 has a resolution of 400dpi. A DMAC 7 stores a reception data to a memory 15 sequentially. Then the resolution of a received picture data is discriminated according to the received resolution information. when the resolution of the received picture data is 300dpi, a command of selecting the recording head 14 is sent to a pulse generating circuit. When the resolution of the received picture data is neither 300dpi nor 400dpi, a command of resolution conversion is sent to a CODEC 6. Then the recording head 15 is selected to print out the received picture.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a facsimile machine.

[Conventional technology]

Conventionally, in facsimile machines, CCITT Recommendation G
The pixel density of the three machines is 16pe 1.8pe 1.15.
4 pels, 7.7 pels.

The pixel density of the 64 machines is 400 dpi, 300 dpi, and 200 dpi, which is the inch system.

Normally, one type of printer resolution is prepared, and if the resolution of the recorded image differs from the resolution of the printer, resolution conversion (pixel density conversion) of the image information is performed.

[mN to be solved by the invention] When performing the resolution conversion described above, 1 simple 2 times, or 4
Double resolution conversion requires a simple hardware configuration, and there is little deterioration in image quality due to resolution conversion.

However, for example, converting between millimeter and inch systems, 30
0dpi → 400dpi, 200dpi → 300dpi
In this conversion, it is difficult to convert the resolution using hardware, and the configuration of the conversion circuit becomes complicated and the cost increases.

Furthermore, conversion between the millimeter system and inch system mentioned above and 300dpi
→If you perform 400dpi conversion, there is a problem that the image quality will deteriorate during resolution conversion.

[Means and effects for solving the problem] According to the present invention, a plurality of types of recording heads are provided, and the control means selects the recording head to be used according to the type or resolution of the image and records the image. Therefore, a clear recorded image can be obtained.

Further, according to the present invention, even if one recording head becomes unusable, the control means detects whether the recording head can be used and selects the recording head to be used, so that another recording head can be used. Image recording can be performed and multiple recording heads can be used efficiently.

〔Example〕

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

FIG. 1 is a block diagram showing the basic configuration of a facsimile machine according to a first embodiment of the present invention.

In FIG. 1, 1 is a main processor unit (MPU) that controls the entire facsimile machine.

2 is a drive-on memory (ROM) that stores control programs and the like executed by the MPU 1.

3 is a random access memory (RAM) for storing various data, and data such as user registered data and communication records are stored by battery backup.

4 is a modem that modulates the transmitted signal and demodulates the received signal;
Network control unit (NCU) that controls line connections, l5DN
l5DN interface for digital lines (IS
This is a communication interface consisting of a DN I/F), a HDLC controller that controls communication for high-level data link communication, and so on.

5 is an interrupt controller that causes MPU 1 to execute an interrupt program; a timer; a watchdog timer that detects abnormalities in program execution of MPLI 1;
This is an MPU peripheral circuit consisting of a clock IC, etc.

6 is Modified Huffman (MH) which is one-dimensional encoding/decoding, Modified Read (MR) which is two-dimensional encoding/decoding, and Modified Modified Read (MMR) encoding (coding) and decoding (decoding). This is a CODEC that performs the following.

7 is a DAM control circuit (DMAC) that transfers image data.
).

Reference numeral 8 denotes a microcomputer that controls the following motors: a scanner motor 9 for transporting documents, a printer motor 10 for transporting recording paper, and a head motor 11 for moving the recording head. The recording head of this embodiment is a bubble inkjet head that generates air bubbles using heat and ejects ink using the pressure of the bubbles.

Reference numeral 12 denotes a reader for reading a document, which reads a document image using a CCD line sensor or a contact line sensor and outputs the document image as image data.

Reference numeral 13 denotes a pulse generation circuit that generates electric pulses necessary for generating bubbles in the bubble inkjet head and sends them to the head.

A bubble inkjet head 14 is integrated with an ink container and has a recording resolution of 300 dpi.

15 is a head similar to the bubble inkjet head 14 and has a recording resolution of 400 dpi.

16 is a memory for storing image data and stack data necessary for the MPU 1 to operate.

Next, FIG. 2 shows a configuration including mechanical units around the printer in FIG. 1. In this figure, the same parts as those in FIG. 1 are denoted by the same numbers, so the description of the same parts will be omitted here.

20 and 21 are respectively Herad motor 11 and Printer motor 1.
This is a motor driver for driving the motor of 0, and generates a motor drive signal in response to a control signal from the microcomputer 8.

22 is a rotation axis for moving the head 14.15.

23 is a conveyance roller for conveying the recording paper, and is rotated by the printer motor 10.

Next, the flow of image data during transmission and reception in the facsimile machine shown in FIG. 1 will be explained.

At the time of transmission, the microcomputer 8 drives the scanner motor 9 via a driver (not shown) in accordance with instructions (commands) from the MPUI to transport the document. Along with this, the read image (manual image) data from the reader 12 is sequentially transferred by the DMAC 7 and stored in the memory 16. At the same time, the CODEC 6 reads the image data from the memory 16, codes it using an encoding method suitable for the transmission format, and stores the encoded image data in the memory 16 again.

In addition, the memory 16 has a two-board configuration, and the MPU
1 reads the encoded image data stored in the memory 16 and transfers it to the communication interface 4 in accordance with the transmission speed, and transmits the image data.

During reception, the MPU 1 sequentially transfers the received data from the communication interface 4 to the memory 16.

Thereafter, the MPU 1 reads header information and the like from the data stored in the memory 16 and returns necessary response information to the communication interface 4. Additionally, the MPLI 1 determines the address (storage position) of the image data in the memory 16 from the header information read from the memory 16, and stores the address (storage position) information of each image data (of each page) in the C.
Send to 0DEC6. The CODEC 6 reads out the image data received from the memory 16 according to the position information instructed by the MPU 1, decodes it, and stores it in the memory 16 again. At this time, the C0DEC 6 performs resolution conversion of the decoded image data according to instructions from the MPU 1 as necessary.

Furthermore, the MPU 1 determines the resolution of the received image data from the header information in the memory 16, selects the most suitable head based on this, and instructs the pulse generating circuit 13 to select the most suitable head. At this time, if the resolution of the received image data does not match the resolution of the head 14 or head 15, resolution conversion is performed by C0DEC6 as described above.

In accordance with instructions from the MPU 1, the pulse generation circuit 13 sends a recording pulse according to the image data to the selected head to print the received image on recording paper. Then, the microcomputer 8 moves the RAD motor 11 to record in accordance with this printing speed. When one line of image data is read from the memory 16 and printing is completed, the MP
U1 sends a sub-scan command to the microcomputer 8.

As a result, the microcomputer 8 drives the print motor 10 to feed the recording paper (sub-scanning).

In this way, one page of image printing is performed by repeating one line printing (main scanning) and paper feeding (sub scanning). Then, if there is a next page after printing one page, M
The PUI sends the address information of the memory 16 in which the image data of the next page is stored to the CODEC 6, and thereafter prints the image in the same manner as described above.

The above is the flow of image data during transmission and reception in this embodiment. In this embodiment, as described above, a bubble jet type inkjet printer is employed as the printer section. Therefore, the configuration of the printer section will be explained in detail below.

First, the configuration of the bubble jet inkjet heads 14 and 15 of this embodiment will be described. FIG. 3 is a diagram showing the inkjet head of this embodiment, and this configuration is the same as the heads 14 and 15.

In this figure, IJ)I is a bubble jet type inkjet head (recording head), IJC is an inkjet cartridge that is integrated with the inkjet head IJH, and is equipped with a tank IT that supplies ink to the inkjet cartridge, which can be installed freely.
and IJRA is the main body of the inkjet recording apparatus.

As can be seen from the perspective view of FIG. 3, the inkjet cartridge IJC in this example has a shape in which the tip of the inkjet head IJH ejects ink slightly from the front surface of the ink tank IT. This inkjet head cartridge IJC is an inkjet recording device main body IJ which will be described later.
It is a disposable type that is fixedly supported by a carriage placed on the RA and can be attached to and detached from the carriage.

Does it store the ink supplied to the inkjet head IJH? The h3gl ink tank IT is composed of an ink absorber, a container into which the ink absorber is inserted, and a lid member (all not shown) that seals the container. The ink tank IT is filled with ink, and the ink is sequentially supplied to the inkjet head side according to the ejection of the ink.

Further, in this embodiment, the top plate 34 is made of a resin such as polysulfone, polyethersulfon, polyphenylene oxide, or polypropylene, which has excellent ink resistance.

Inkjet cartridge I configured as above
JC is an inkjet recording device IJRA which will be explained below.
It is removably mounted on the carriage HC in a predetermined manner,
A desired recorded image is formed on the recorded member by the relative movement wJe between the carriage HC and the recorded member using a predetermined recording signal.

FIG. 4 is an external perspective view showing an example of an inkjet recording apparatus IJRA equipped with a mechanism for the above processing.

In this figure, I4.15 is an inkjet head cartridge IJC equipped with a nozzle group that ejects ink facing the recording surface of recording paper fed onto the platen 24.
This is an inkjet head (recording head). 36 is a carriage HC that holds the recording head 14.15, and is connected to a part of the drive belt 38 that transmits the driving force of the drive motor 10, and has two guide shafts 39A and 39B arranged parallel to each other. By being slidable, the recording head 14, 15 can be moved back and forth across the entire width of the recording paper.

Reference numeral 46 denotes a head recovery device, which is disposed at one end of the moving path of the recording head 14, 15, for example, at a position opposite to the home position. The driving force of the motor 10 via the transmission mechanism 43 operates the head recovery device 46 to cap the recording heads 14 and 15. The recording head 14 by the cap portion 46A of the head recovery device 46.
15, suitable suction means (e.g. a suction pump) provided within the head recovery device 46.
The ink is absorbed by the ink, or the ink is forced to be fed by an appropriate pressure means provided on the ink supply path to the recording head 14.15, and the ink is forcibly discharged from the ejection port (dry ejection), thereby increasing the amount of ink in the ejection port. The recording head is protected by performing ejection recovery processing such as removing sticky ink, and by capping the recording head at the end of recording.

A blade 51 is disposed on the side surface of the head recovery device 46 and is made of silicone rubber and serves as a wiping member. The blade 5] is held in cantilever form by the blade holding member 31A, and similarly to the head recovery device 46, it is operated by the motor 10 and the transmission mechanism 43 to enable engagement with the ejection surface of the recording head 14, 15. As a result, at an appropriate timing during the recording operation of the recording head 14.15, or after the ejection recovery process using the head recovery device 46, the blade 51 is projected into the moving path of the recording head 14.15, and the head 14.15 Condensation, moisture, dust, etc. on the ejection surfaces of the heads 14 and 15 are wiped off as the heads 14 and 15 move.

FIG. 5 is a diagram showing the ink ejection ports of the recording heads 14 and 15, and the resolution of the head 14 is 300 dpi and the resolution of the head 15 is 400 dpi. In this embodiment, heads with different resolutions are provided separately, but
As shown in figure s6, it may be configured as a cartridge in which heads with two resolutions are integrated.

Next, the control operation of the MPU 1 when selecting a recording head according to the resolution of received image data will be explained based on the flowchart of FIG. 7.

First, in step S1, when an incoming call is received from an analog line or a digital line and a notification of the incoming call is received from the communication interface 4, execution of a reception routine is started. and,
When the line connection with the other party is completed, the facsimile communication procedure (03 procedure in the case of G3, 04 procedure in the case of G4) is performed in step S2, and in this procedure, the receiving mode is set and various information from the other party is set. receive. The received information includes resolution information of the received image data,
This resolution information is stored in the memory 16 together with the image data received in the next step S3.

In step S3, image data reception is started in the reception mode set in step S2, and the DMAC 7 sequentially stores the received data in the memory 16. Then, in step S4, the resolution of the received image data is determined according to the resolution information received in step S2. If the resolution of the received image data is 300 dpi, the process advances from step S4 to step S7, where a command to select the recording head 14 is sent to the pulse generation circuit, and the memory 16 is sent to the C0DEC6.
The address information of the received image data is set and the image data is decoded. When the decoded image data has been decoded for the number of lines corresponding to the number of ejection ports of the recording head 14, the image data for the number of lines is sequentially read out from the memory 16, and the received image is divided into multiple lines. is printed. In this way, when printing of all received images is completed, the post-facsimile communication procedure is performed, and then the reception routine is ended.

Also, in step S4, the resolution of the received image data is 300d.
If the resolution is not pi, the process proceeds to step S5, and if the resolution of the received image data is not 400 dpi, a resolution conversion command is sent to the CODEC6. Here, the received image data is 2
00dpi to 400dPi, 3.85pel to 15.4pci, 7.7pel to 15.4
The MPU 1 instructs the C0DEC 6 as to which resolution conversion to perform. In this way, the received image data is decoded and resolution converted by the CODEC 6, and in step S6, the recording head 15 is selected under the same control as in step S7 described above, and the received image is printed. Furthermore, recording head 1
5, the image is printed in units of lines equal to the number of ejection ports of the recording head 15.

In addition, in the example mentioned above, 400dpi and 300dpi
Using a pi recording head, all images other than 300 dpi are converted to 400 dpi or 15.4 pel and 400 dp
Printing is performed using the i recording head for the following reason.

(1) Conversion to double or quadruple the resolution, i.e. 7.7
pel-15,4pel, 3.85pel-15,4p
There is little deterioration in image quality due to conversion of el, 200dpi-=400dpi.

(2) 400dpi without converting a 15.4pel image
Even when printing with this head, the image distortion is less than 2%, which poses little practical problem.

(3) 300dpi images were originally 200dpi images and 7
．． Compared to the 7pci image, the resolution is high and the deterioration during conversion is noticeable. Furthermore, conversion to a resolution other than double or quadruple results in significant deterioration in image quality.

However, the present invention is not limited to the above-mentioned heads with two types of resolutions, but may be provided with heads with resolutions depending on the intended use. In other words, when not receiving 300 dpi images, a 400 dpi head and a 15.4
Millimeter type (G3) by providing a pel head.
Inch (4G) images can be recorded with almost no deterioration in image quality. Further, the number of recording heads to be provided is not limited to two types, and three or more types may be provided.

In the embodiments described above, a case has been described in which a recording head is selected depending on the resolution of a received image.

By the way, the dot diameter for the most efficient printing differs depending on the type of image, such as a halftone image and a black and white image (text original image). For example, when printing a character manuscript, it is desirable that the spaces between each dot be small so that the characters can be seen clearly. However, since each dot in the above-mentioned inkjet printer is circular, it is necessary to partially overlap each circular dot in order to eliminate the blank spaces between the dots. Therefore, if the circular dots are partially overlapped, the white dot surrounded by black dots will be almost completely covered by the surrounding black dots.

On the other hand, in the case of a halftone image made of a certain set of dots, the halftone image is expressed by the density of black dots, so we are talking about a halftone image in which circular dots with small dot diameters that do not overlap are better expressed. Good tonality.

Therefore, as a second embodiment, a case will be described below in which a print head with a small ink ejection port and a print head with a large ink ejection port are provided and the print head is selected depending on the type of image. The configuration of the second embodiment is the same as that of the embodiments described above (FIGS. 1 to 6), but the control operation of the MPU 1 is different.

In the case of the second embodiment, as shown in FIG. 8, a 400 dpi recording head 14' with a large ink ejection port and a 400 dpi print head 15' with a large ink ejection port are provided, and the MPU 1 is used for printing. Head 14'15'
Make a selection. However, in the second embodiment as well, it is also possible to use print heads with different resolutions like the print heads 14 and 15 of the above-mentioned embodiments, and to make the ink ejection ports of the 300 dpi head larger and the ink ejection ports of the 400 dpi head smaller. .

That is, the MPU 1 determines the type of image and selects a head with a dot diameter suitable for the received image, and the following methods can be considered as the selection method.

Method 1: Determine the data amount of one page of received images. The received image is encoded, and the image compression rate during encoding has a strong correlation with the whiteness, blackness, and number of inversions of the received image. An image with a large number of black and white inversions requires a large amount of encoded image data.As a result, if the amount of encoded image data increases, the dither method, error diffusion method, average density preservation method, etc. It is often a converted halftone image. Also, even if it is not a halftone image,
Images with a large number of black-and-white inversions are considered to have many small characters, so a head with a small dot diameter is suitable for outputting these images. Therefore, the head is selected depending on the amount of code data of the received image.

Method 2: The MPU 1 reads part or all of the image developed by the C0DEC 6 and counts the number of times the image is inverted in black and white. Select the head in the same manner as above.

Method 3: Judge the image and select a head using a known image area separation method.

Method 4: Print using any of Methods 1 to 3 or a combination thereof. Perform this for each head width line and select the head.

Although the above methods are possible, method 1 is used in the second embodiment.
The image type of the received image is determined by the recording head 14.
Make selection '15'.

FIG. 9 is a flowchart showing the control operation of the MPU 1 of the second embodiment. When a call notification is received from the communication interface 4 and the line is connected to the other party, step S1 occurs.
Go to 1.

In step Sll, the facsimile communication procedure (
G3 procedure or G4 procedure) is performed, and various information is received from the other party through this facsimile communication procedure C. Among these information is information indicating the encoding method of the received image data, information on resolution, and image size. Contains information. Then, this information is stored in the memory 16 together with the image data received in the subsequent step S12. Further, a reception mode is set by performing a facsimile communication procedure, image data is received in the reception mode set in step S12, and the image data received by the DMAC 7 is sequentially stored in the memory 16. After receiving one page of image data in this way, the MPU 1 performs step S13.
The amount of image data for one page received in step Sll
The encoding method information, resolution information, and image size information received are compared with the standard values defined by the image size information. Regarding these specified values, a table corresponding to the encoding method, resolution, and image size is stored in the RAM 3, and the MPUI reads out the specified values corresponding to the encoding method, resolution, and image size of the received image from the RAM 3, and Compare with the amount of received image data for one page.

Then, in step S13, if the received image data amount for one page is larger than the specified value, it is assumed that the received image is a halftone image or a fine image.
In step S15, the recording head 15' (small diameter head) is selected to record the received image. Note that the recording control is the same as that described in FIG. 7.

If the amount of image data for one page received in step S13 is smaller than the specified value, the recording head 14' (large diameter head) is selected in step S14 to record the received image.

Further, in recording the received image, if the resolution of the received image and the resolution of the recording head do not match, the resolution of the received image data is converted.

According to the second embodiment described above, the image type of the received image is set to M.
The PU1 makes a judgment, and the head with a small ink ejection port (small diameter head) or the head with a large ejection port (
Since the received image is recorded using a large-diameter head, a clear received image can always be obtained.

In the second embodiment described above, the type of received image is determined by comparing the amount of image data with a specified value (method 1), but method 2.3.4 described above may also be used.

By the way, in the above-mentioned embodiment of N1, the second embodiment,
Images are recorded using a recording head that combines an ink cartridge and a head.

However, the inkjet head shown in FIG. 3 described above has a problem in that it tends to run out of ink when a large amount of image recording is performed because the ink capacity in the cartridge is small.

Therefore, it is conceivable that when one print head runs out of ink or the remaining amount of ink becomes less than a specified value during image recording by one print head, the other print head continues to record the image.

As a third embodiment, a case will be described below in which the recording head for printing an image is switched depending on the amount of ink remaining in the ink cartridge. The basic configuration of the facsimile apparatus in the third embodiment is the same as in the first and second embodiments, but the control operation of the MPUI is different.

First, as a method of detecting the amount of ink remaining in the ink cartridge shown in FIG. 3, the following can be considered.

Method 1: Since the total recording amount (dot amount) that can be printed with one ink cartridge is approximately constant, the remaining amount of ink is detected by counting the number of dots actually printed and subtracting it from the total dot amount. According to this method, the remaining amount of ink can be detected by the software of the MPU 1, so no special hardware configuration is required.

Method 2゜As the ink in the ink cartridge decreases,
The weight of the cartridge is reduced. Therefore, the remaining amount of ink is detected by measuring the weight of the cartridge.

Method 3: When the ink used is conductive, electrodes are provided on the inner wall of the ink cartridge, and the remaining amount of ink is detected by detecting changes in resistance between the electrodes.

Method 4: A photosensor is provided on the ink ejection path to detect the presence or absence of ink ejection, and when ink is no longer ejected, it is detected that the ink is out (there is no remaining amount of ink).

Method 5: The image after printing is read with a scanner, the presence or absence of printing is detected, and if there is no printing, it is detected that the ink has run out.

The MPU 1 detects the remaining amount of ink using the method described above, and when the ink runs out or the ink remaining amount falls below a specified value, it changes the recording head to be used, displays the ink exhaustion on a display (not shown), and prompt the operator to replace the

FIG. 10 is a flowchart showing the control operation of the MPU 1 of the third embodiment. In this flow of Figure 10,
The method 1 described above is used to detect the remaining amount of ink. The flow shown in FIG. 10 will be explained below.

First, when there is an incoming call notification from the communication interface 4,
In step 521, it is determined whether there is ink in at least one of the recording heads 14, 15. If there is no ink in any of the print heads,
Proceeding from step S21 to step S29, the memory 16
Memory reception is performed to store received images as long as they can be recorded.

Further, if there is ink in at least one recording head, the process advances from step S21 to step S22 and reception is performed.

At this time, if there is ink in both the recording heads 14 and 15, the recording head to be used depends on the resolution of the received image data or the type of image, as in the first and second embodiments described above. Select. However, if one of the print heads runs out of ink, the print head with ink is selected and the received image is recorded regardless of the resolution or image type. Performs resolution conversion and records.

Image data is received and recorded in steps S22 and 323, but the reception control and printing control are the same as in the first embodiment (FIG. 7) described above, and their explanation will be omitted here.

Then, in step S23, the received image is printed in units of multiple lines corresponding to the number of ink ejection ports, but when one line printing is completed, in step S24, printing of all received image data is completed. It is determined whether or not the printing has ended, and if there is data to be printed, the remaining amount of ink is detected in step S25. As described above, the remaining amount of ink is detected by determining whether the amount of printed dots in method 1 has reached the total amount of dots that can be recorded by the cartridge. Each time a line is printed, the number of recorded dots is counted and subtracted from the total number of recordable dots. Therefore, in step S25, it is determined whether the total number of recordable dots has reached O (or is below a certain value). Taka)
If the total amount of recordable dots is 0 (or more than a certain list price), the process returns to step 323 and printing is performed.

When the total amount of recordable dots becomes 0 (or less than a certain value), the process advances to step S26, where it is determined whether another recording head can be used, and if the other recording head cannot be used, the process advances to step S29. Then, the memory 16 performs memory proxy reception. On the other hand, if another recording head can be used in step S26, a switching command is output to the pulse generation circuit 13 to switch the recording head in step S27, and if resolution conversion is necessary,
0DEC6&: Sends a conversion command (note that conversion is not necessary when recording heads 14' and 15' shown in Figure s8 are used), and in step 328, a display (not shown) indicates which recording head has run out of ink. is displayed in an identifiable manner, and the process returns to step 523 to continue printing.

In the above-described embodiment, the recording head 14.1 in FIG.
5 or 8 are used for recording, but in this third embodiment, the same recording head may be set as shown in FIG. 11.

According to the third embodiment, even if one print head runs out of ink, the received image is printed by the other print head, so the two print heads can be used more efficiently.

In the above-described system, when the ink runs out, the print head is switched to another one, but the print head can also be switched not only when the ink runs out, but also when printing becomes impossible due to clogging of the ink ejection ports, etc. good. In this case, method 4 or method 5 described above is used as a method for detecting the remaining amount of ink.
By using this, it is possible to detect the presence or absence of an ink ejection port that cannot print, and the print head can be switched based on the detection result.

As described above, according to the first to third embodiments, a plurality of recording heads can be effectively utilized to obtain clear recorded images, and ink can be used efficiently.

Note that the present invention is not limited to the embodiments described above, and various modifications are possible.

〔Effect of the invention〕

According to the present invention, a plurality of types of recording heads are provided, and the control means selects the recording head to be used according to the type or resolution of the image to record the image, so that a clear recorded image can be obtained.

Further, according to the present invention, even if one recording head becomes unusable, the control means detects whether the recording head can be used and selects the recording head to be used, so that another recording head can be used. Image recording can be performed and multiple recording heads can be used efficiently.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of a facsimile machine according to the first embodiment of the present invention, FIG. 2 is a diagram showing the schematic configuration of the printer section, FIG. 3 is a perspective view of the recording head, and FIG. Figure 5 is an external perspective view of the printer section; Figure 5 is a diagram showing recording heads 14 and 15 with different resolutions; Figure 6 is a diagram showing a recording head in which ink ejection ports of different resolutions are integrated; The figure is a flowchart showing the control operation of the MPU 1 of the first embodiment.
15', FIG. 9 is a flowchart showing the control operation of the MPU 1 of the second embodiment, FIG. 10 is a flowchart showing the control operation of the MPU 1 of the third embodiment, and FIG. 11 is a flowchart showing the control operation of the MPU 1 of the third embodiment. FIG. 3 is a diagram showing an example in which two identical recording heads are set. 1...MPLI 2...ROM 3...RAM 4...Communication interface 5...MPU peripheral circuit 6...C0DEC 7...DMAC 8...Microcomputer 9...Scanner motor 10...Printer motor 11...Head motor 12...Reader 13...Pulse generation circuit 14.15...Recording head 16...Memory Fig. 2

Claims (3)

[Claims] (1) A facsimile device comprising: an inkjet recording device having a plurality of types of recording heads; and a control device that selects the recording head according to the type of image and causes the image to be recorded. (2) A facsimile device comprising: an inkjet recording device having a plurality of types of recording heads; and a control device that selects the recording head according to the resolution of the image and causes the image to be recorded. (3) An inkjet recording means having a plurality of recording heads that are integrally configured with an ink container and an ink ejection section, detecting whether or not the recording heads can be used, and selecting the recording head to be used according to the detection result. A facsimile machine having a control means for recording an image.