JPH03267869A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To surely discriminate it that a received picture data is recorded on a recording medium by providing an undelivery detection means detecting ink undelivery and a control means controlling the detection that the undelivery detection is implemented after the recording of the received data is finished. CONSTITUTION:A facsimile equipment provided with a recording system having an ink jet recorder is provided with an undelivery detection means 113 detecting ink undelivery of ink jet recorders 20BK, 20C, 20M, 20Y and a control means 101 controlling the undelivery detection of the undelivery detection means 113 after the end of recording. Thus, whether or not the recording is implemented normally is checked and the result is used and when normal recording is finished, a picture data in memories 107BK, 107C, 107M, 107Y is erased to ensure an idle capacity of the memories as much as possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine equipped with an inkjet recording device.

[Conventional technology]

2. Description of the Related Art In recent years, so-called bubble jet inkjet printers have been developed that record characters, images, etc. by ejecting ink from an ejection port toward a recording material using bubbles generated by thermal energy. In this printer, the size of the heating resistor (heater) installed in each ejection port is much smaller than the piezoelectric element used in conventional inkjet printers, making it possible to have multiple ejection ports with high density. Therefore, it is possible to obtain high-quality recorded images, and has features such as high speed and low noise.

On the other hand, facsimile machines are required not only to simply transmit images at high speed, but also to receive higher quality images at high speed. The above-mentioned pull-jet type inkjet printer is considered to be one of the printers that can meet such demands, considering the above-mentioned characteristics.

[Problem that the invention is trying to solve]

However, such bubble jet inkjet printers have the following problems.

That is, the ink ejection ports of the print head may become clogged due to ink that has increased in stickiness due to non-use of the print head, low humidity environment, or difference in printing frequency, or due to adhesion of dust. Therefore, the thickened ink is discharged under pressure from inside the ejection ports of the recording head.
Alternatively, an ejection recovery mechanism has been implemented in which the thickened ink is removed by sucking ink through a cap that covers and protects the ejection ports of the print head. Furthermore, when the print head is not in use, the ejection ports of the print head are covered with a cap to prevent ink from being ejected.

By the way, even if such measures are taken, the ink passages at the ink ejection ports are actually extremely narrow, so if the print head is not used for a long time or if the room is relatively dry, etc., the ink ejection orifices may become clogged, and even if an ejection orifice that is used very infrequently during the previous printing operation occurs, it may become clogged during the next printing.

Therefore, when such a printer is used as a facsimile machine, white streaks or stripes appear on the output image even though the communication has been completed normally, leading to deterioration in image quality and missing information. Ta.

The present invention aims to solve this problem.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention includes a non-discharge detection means for detecting ink non-discharge of an inkjet recording means for recording received data, and a non-discharge detection means for detecting ink discharging after the recording of the received data is completed. The present invention is characterized by comprising a control means for controlling the detection.

〔Example〕

Configuration Example of Recording System (Printer) FIGS. 2 and 3 show a configuration example of an inkjet printer suitable as a recording system of a facsimile machine to which the present invention is applied. In this figure, 20 is a bubble jet type inkjet head (recording head), and IJC is a freely attachable inkjet cartridge that is integrated with the inkjet head 20 and has a tank IT that supplies ink to the inkjet head 20.

As can be seen from the perspective view of FIG. 2, the inkjet cartridge IJC in this example has a shape in which the tip of the inkjet head 20 slightly protrudes 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 fixed to a carriage placed on the RA and can be attached to and detached from the carriage.

The first ink tank IT (10) that stores ink to be supplied to the inkjet head IJH includes an ink absorber, a container into which the ink absorber is inserted, and a lid member (both not shown) that seals the same. ). This ink tank IT (10) is filled with ink, and the ink is sequentially supplied to the inkjet head side as the ink is ejected.

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,
By inputting a predetermined recording signal, a desired recorded image is formed by controlling the relative movement of the carriage HC and the recording member.

In addition, cartridges of each color IJCBk (black), IJ
CC (cyan), IJCM (magenta) IJCY
(yellow) has a similar configuration. However, IJCBk has a larger ink tank in consideration of the high frequency of use of monochrome image reception.

FIG. 3 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, 20Bk, 20C, 20M, and 20Y are the inkjet heads (recording heads) of each color of the inkjet head cartridge IJC, which is equipped with a nozzle group that ejects ink facing the recording surface of the recording paper fed onto the platen 24. head). A carriage HC 16 holds the recording head 20, is connected to a part of the drive belt 18 that transmits the driving force of the drive motor 17, and slides on two guide shafts 19A and 19B arranged parallel to each other. By making this possible, the recording head 20 can be moved back and forth across the entire width of the recording paper.

Note that 22 in FIG. 1 is a control circuit for controlling the drive of the drive motor 17, and controls the amount of movement of the carriage HC in accordance with commands from the CPU10I. During printing, the carriage HC is moved in the direction of the arrow 40, and printing is performed in the order of the inkjet cartridges placed on the carriage HC, that is, in the order of black, cyan, magenta, and yellow.

Further, since the cartridges of each color are arranged at a distance from each other in the moving direction, the timing of recording differs by a time corresponding to the distance. In order to print across the entire width of the paper, the carriage position at which the row recording starts is the position where the black inkjet head 208k faces the starting edge of the paper, and the carriage position at which the row recording ends is the yellow inkjet head 20Y. is the position relative to the end of the paper. That is, compared to the case of a single color, the carriage movement distance is increased by an extra distance due to the arrangement of 20Bk and 20Y.

A head recovery device 26 is disposed at one end of the movement path of the recording head 20, for example, at a position opposite to the home position. The head recovery device 26 is operated by the driving force of the motor 22 via the transmission mechanism 23, and the recording head 20 is capped.

In connection with the capping portion of the recording head 20 by the cap portion 26A of the head recovery device 26, ink is absorbed by an appropriate suction means (for example, a suction pump) provided in the head recovery device 26 or ink is transferred to the recording head 20. The ink is forcefully fed by an appropriate pressure means provided in the supply path, and the ink is forcibly discharged from the ejection port, thereby performing ejection recovery processing such as removing thickened ink within the ejection port. Furthermore, the recording head is protected by capping it at the end of recording.

The cap portion 26A is 26ABk corresponding to each color.

26AC, 26AM, and 26AY are arranged corresponding to the distances between the heads arranged on the carriage, and at the home position of the carriage, each head is moved to a position opposite to each cap. There is.

Reference numeral 113 denotes an ejection failure detection sensor, which includes a photoelectric conversion element array 113A such as a photo sensor that detects the presence or absence of ink ejected from the head 20 and attached dot by dot. As shown in , it is provided in parallel with the ejection port group of the BJ head 20 and has approximately the same length or a slightly longer length. This non-discharge detection sensor 11
3 is a BJ head 2 mounted on the carriage 16 (see Figure 3).
0, and its photoelectric conversion element array 113
BJ so that A does not come into contact with the blade (wiper) 31.
It is provided recessed from the discharge port of the head 2°. The ejection failure detection sensor 113 is equipped with a white illumination light source 113' and is configured to be able to detect the state of each color of ink recorded on the recording paper by its reflected light.

A blade 31 is disposed on the side surface of the head recovery device 26 and is made of silicone rubber and serves as a wiping member. The blade 31 is held in the form of a cantilever by a blade holding member 31A, and similarly to the head recovery device 26, it is operated by a motor 22 and a transmission mechanism 23, and can be engaged with the ejection surface of the recording head 20. As a result, at an appropriate timing in the recording operation of the recording head 20,
Alternatively, after the ejection recovery process using the head recovery device 26, the blade 31 is projected into the moving path of the recording head 20 to wipe off dew, wetness, dust, etc. on the ejection surface of the head 20 as the head 20 moves. .

Example of Control System Configuration FIG. 1 shows an example of the circuit configuration of a facsimile machine according to an embodiment of the present invention. In this figure, 101 is a main CPU (central processing unit) such as a microcomputer that controls the entire device for transmitting and receiving data through a bus 117;
02 is a ROM (read only memory) that stores the contents of various control procedures (programs) as shown in FIG. It is. 104 is a data transmission modem (MODEM); 105 is a network control unit (NCU) connected to MODEM 104; and connected to a public telephone line through NCU 104. 106 is a registration RAM, which is used to register data such as telephone numbers and abbreviations. 107 is an image RAM (D
RAM), 107Bk, 107C corresponding to each color.
, 107M, and 107Y.

Further, 60 is a hard disk, and the received image data is stored there.

Further, 61 is a used color determining means, and a hard disk 6
Of the image data stored in 0, the block to be recorded next (8 lines of image data) is monitored to determine the color to be used.

In other words, during recording, the recording process is performed while performing dry ejection at regular intervals as a recovery process to prevent clogging.
In this device, this is done every 8 lines when the vertical width of the inkjet nozzle shown in Figure 2 is 1 line, and 8 lines are treated as 1 block, and the image data of the next block is processed for each color. Monitor each time. In other words, when binary image data is represented by 1 (corresponding to inking) and 0 (also corresponding to not inking), 1 in a block.
This is done by creating 4-bit data assigned in the order of black, cyan, magenta, and yellow by setting the determination data to 1 if it exists, and sending it to the CPU 10I.

Specifically, the configuration of the used color determining means is as shown in FIG.

The Y, M, C, and Bk data control the output of the image clock by turning on and off the gates 66Y and 66M, respectively.

An image clock is output from the gate only when the binary image data given to 66C and 66Bk is 1 (strike). By counting the output with the counter 67, the number of pixels where the binary image data is 1 (hit) is counted,
Compare that value with the CPU setting value, and if it is greater than or equal to the setting value,
It is determined to be a used color, and if it is less than that, it is determined to be a non-used color.

Here, the CPU setting value is, for example, a value of about 10.

Further, the configuration of the user determination means is not limited to this configuration, but may be of other types, for example, if the received data is RlG, B, or Y.
SM, C, Bk (if the density and hue/saturation data of L, a, b, etc. are given separately, the data is The presence or absence may be determined.

Further, 62 is a mode determining means, which determines the reception mode, monochrome reception or color reception. Reference numeral 63 denotes an image converting means, which converts the color image data into black and white image data by depicting the degree of shading thereof. 64 is a black print switch, which is operated when it is desired to forcibly print in black ink even when receiving color data.

108 is a color CD (
It is a charge-coupled device (charge-coupled device) that converts a document image formed through an imaging lens such as a rod lens into an electrical signal.

A binarization circuit 109 binarizes the given color image data for each color component. Further, 114 is an operation unit having a keyboard and the like, and has a liquid crystal display (LCD) 115 and various keys 116 on the panel for operation thereof. Further, 117 is a DAM controller, which includes a hard disk 60 and each image memory 107Bk, 1107CS107
, 107Y is performed in response to a command from CPU10I.

Further, 120 is a color image/monochrome image conversion circuit that converts the color image signal read and obtained by the color C0D 108 into black and white image data.
If the image data obtained by 108 is given by three color components of R, G, and B, for example, Y=0.6G+0
．． It is converted into Y data represented by 3R+0.1B, or only the G component is output. 122 is a binarization circuit that binarizes the output of the conversion circuit 120 by processing such as error diffusion method, dither method, average density preservation method, etc.;
4 performs color balance adjustment, color masking processing, and VC processing on the color image data output from the color CCD 108.
A color image processing circuit performs processing such as R and converts it into four components of Y, M, C, and Bk; 128 is a compression circuit that compresses and expands the output of the color image processing circuit 124 or the data stored in the hard disk 6; It is an expansion processing circuit, for example 2
The value image data is compressed by processing such as run-length coding, predictive coding, and entropy coding, or it is expanded, which is the opposite of compression. 200, 200C, 200M.

Reference numeral 200Y denotes a drive circuit for driving suction pumps for performing head recovery operations for Bk%C, M, and Y, and is provided for each ink color. Also, 201Bk.

20IC, 201M, and 201Y are pump motors for suction, respectively.

Recovery Processing There are two types of recovery processing for preventing ink clogging in the recording apparatus, and a relatively simple "dry ejection" and a full-scale "suction ejection" are used depending on the need.

<Dry Ejection> The recording head 20 shown in FIG. 3 is moved to the position of the cap portion 26A via the drive motor 17, and the recording head 20 is
By applying a driving pulse in the same way to all of the heating elements of each ejection port, ink is forcedly ejected toward the cap portion 26A for all the ejection ports multiple times without the purpose of printing. Note that at this time, there is no need to cover (cap) the cap portion 26A with the recording head 20 (ejection is performed with the cap portion 26A and the recording head 20 separated, and the ink ejected onto the cap portion 26A is removed from the recovery device. It will be collected within 26 days.

Suction and discharge> As in the above-mentioned dry discharge, the recording head 20 is attached to the cap 26.
A, the motor 22 is driven to advance the recovery device 26, and cover the recording head 20 with the cap 26A.

A suction motor (not shown) in the head recovery device 26
The ink inside the ejection port is sucked. Even if nozzle clogging is not cleared due to dry ejection, it can be recovered by utilizing the suction force of the suction motor in the head recovery device 26.

Printing of non-discharge detection pattern FIG. 6 shows an example of a non-discharge detection pattern that is recorded when detecting non-discharge. The pattern in this figure is to move the carriage 16 to the right in the figure along the guides 19A, 19B, and sequentially select one of the ejection port groups of the BJ head 20 from the top.
The ink position as a result of ejecting ink from each ejection port toward the non-ejection detection unit 120 is indicated by hatching,
N represents the number of discharge ports (integer). Note that the ejection failure detection pattern is not limited to the type of this example. For example, it may be possible to eject from the same ejection port multiple times in succession, or to divide all ejection ports into groups and eject from each group at once. Ejection failure may be determined based on whether the average density among each group is uniform.

Further, in the embodiment of the present invention, the ejection failure pattern is recorded directly on the recording paper, but if a part for ejection failure detection is provided separately from the recording paper, the ejection failure pattern can be recorded without contaminating the recording paper for image recording. Discharge check can be performed. In this example, in order to simplify the apparatus, recording paper is used, and a roll paper is used, and the portion used for ejection failure detection is cut off.

Example of control operation for non-ejection check Next, the control operation for non-ejection check in the embodiment of the present invention will be explained with reference to the flowchart of FIG. first,
The CPU 101 drives the recording head 20 via the drive motor 17.
is moved to the position of the cap portion 26A, and drive pulses are applied to all of the ejection ports of the recording head 20 to forcefully eject ink not intended for printing, that is, to perform idle ejection, for example, 10 times ( Step 511). Next, set the recording paper. Specifically, the motor is driven to wind up a roll of paper and turn it into a brand new paper (step 5).
12). Next, the BJ head 20 is moved to the ejection failure detection position via the drive motor 17 and the carriage 16 (step 513), and the count value n of the internal counter is set to 0 (step 514).

Next, it is determined whether the count value n has reached the final number N of all the ejection ports of the head 20 (step 515).
), if the determination is negative (NO), a drive pulse is applied to the nth ejection port (therefore, the 0th ejection port initially) to eject ink for one dot (step 516), and the value n of the internal counter is set to " After incrementing (adding) by l” (
In step 517), the drive motor 17 is driven to move the BJ head 20 by one pitch. In step 518), the process returns to step S15, and the above-described process is repeated until n==N.

When ink is ejected from the last ejection port of the BJ head 20, an ejection failure detection pattern as shown in FIG. 6 is printed on the ejection failure detection surface of the ejection failure detection section 120. Note that FIG. 6 shows a case where there is no discharge failure at all discharge ports.

Then, in step S15, an affirmative determination is made that n=N (Y
ES)L/, move the carriage to move the discharge failure detection sensor 113 to the discharge failure detection position, that is, the position where the discharge failure pattern is printed (step 520), and set the value n of the internal counter to O. (Step 521).

Next, it is determined whether the value n of the internal counter has reached the value of the final number N of all the ejection ports of the head 20 (step 522), and if it has not yet reached the value, the non-ejection detection sensor 113 is activated. If it is determined that the nth line is read through the ink (step 523), and that all of the lines are mortar, that is, no ink ejection marks are detected (step 524),
Notify the main CPUl0I that ejection failure has been detected (
step 828). This notification may be performed by changing the value of a predetermined flag.

If it is determined in step S24 that the image is not completely white, the value n of the internal counter is incremented by "bi" (step 525). Return to and repeat the above process.

If the loop of steps 322 to S26 is repeated and the value of the counter n reaches the predetermined value of N in step S22, there is no ejection failure at all the ejection ports (this is when the ink is ejected normally). , notifies that ejection failure is not detected (non-detection) (step 527).

This notification may be performed by changing the value of a predetermined flag as described above.

The basic sequence of the ejection failure check has been explained above. By performing this operation for each color, recording preparations for color recording are completed.

<Overall Operation> Next, the overall control operation of the apparatus of this embodiment will be explained with reference to the flowcharts of FIGS. 11 to 22.

FIG. 11 shows the main routine, and FIGS. 12 to 22 each show the subroutines.

First, the control procedure of the main routine will be explained using FIG. The main CPU 10I is a 16Hz Ci multiplied signal call signal sent from the transmitting side via the NCU 105)
is detected (step S1]-1), incoming call processing is performed (step 5ll-2), and the mode determination means 62 is used to determine the mode specification from the sending side.Step 5ll-
3) If the color mode is specified, the color reception mode is performed (step 511-4), and if the monochrome reception mode is specified, the black and white reception mode is performed (step 11-5). still,
This determination of mode designation is made based on data decoded by the modem 104, for example, based on the value of the decoded data.

Next, the color reception mode will be explained using FIG. 12, and the monochrome reception mode will be explained using FIG.

First, in the color reception mode, color 71-node disk reception is performed in which the once received color image data is stored in the node disk without being expanded at step 128 (step 512-1). The transmitted image data is stored in the hard disk 60.

Next, check whether the black print switch 64 is turned on (step 512-8). If it is turned on, the remaining amount of Bk ink (S12-9), the Bk ink non-discharge level L", /
(S12-1), and if it is OK, output a message indicating that the black print switch is ON (Step 512-19).
Next, a color to black conversion printing operation (step 512-20), which will be described later, is performed (step 512-11), and if the Bk ink non-discharge check is NG, a monochrome recovery operation (step S12) is performed.
-15), perform either or both of the empty ejection suction of the head that ejects black ink, and perform the above-mentioned 31 described below.
Steps 2-11 are repeated, and if the result is still NG, black-and-white error reception (S12-17), which will be described later, is performed. Further, if the result of step 512-8 is OFF, the following processing is performed.

First, check the ink level of each color IJC of Yl, M, C, Bk (step 512-2), and if all four colors are OK,
A non-discharge check is performed for each color ink of Y, MlC, and Bk (step 5L2-3), and if even one color out of the four packages is out of ink, a color error reception (step 512), which will be described later, is performed.
-7). Next, the above Y and M.

Ejection failure check for each color of C and Bk (step 512-3)
If all four colors are OK according to the results of the above steps, perform a color print operation (step 5L2-5).
If there is a head with a nozzle that fails to eject ink for any color, check the number of times the recovery process has been performed (step 512-4), and if it is within the specified number of times, perform the color recovery process (step 512-6), and repeat the steps described above. Returning to 512-3, the above process is repeated. Also, if there is a head with a non-ejecting nozzle even if the number of recovery processes exceeds the specified number,
The color error reception in step 512-7 is performed.

Here, the color recovery processing step 512-6 includes Y
, M, C, and Bk to perform the suction and discharge described above.

Furthermore, in the monochrome reception mode, monochrome hard disk reception is performed as shown in FIG. 13 (step 513-1), and the transmitted image data is stored in the hard disk 60. Next, check the remaining amount of IJCBk ink (step 513-2), if OK, check for Bk ink discharge failure (step 513-3), and if the ink is out, receive black and white error (step 513-2), which will be described later. 513
-7). If the result of the non-ejection check for the Bk head in step 513-3 is OK, black and white printing is performed (step 513-5), and if there is a non-ejecting nozzle, the number of recovery processes is checked and step 513-5 is performed. 5134), if it is within the specified number of times, performs black and white recovery processing (step 513-6), returns to step 513-3, and repeats the processing. If a non-ejecting nozzle still exists even after the number of recovery processes exceeds the specified number, the above-mentioned step 513-7 black and white error reception is performed.

Here, the black and white recovery processing step 513-6 includes Bk
The above-mentioned suction/discharge is performed with respect to the head.

Alternatively, the Bk head may perform both dry ejection and suction.

Next, the color printing operation will be explained using FIG. 14, and the monochrome printing operation will be explained using FIG. 15.

First, the color printing operation will be explained. The data stored in the hard disk 60 is read out, and the compression/decompression processing circuit 128 performs decompression processing, and the image data of each color of YlM, C, and Bk is read out in the aforementioned block units, that is, in units of 8 lines, and the Y1M, CXBk image memories 107Y, 107M, 107C.

107Bk (step 514-1).

At this time, the color determining means 6 described using FIG.
1, it is determined which color among Y, M, and C5Bk will be used in the next block (step 514-2), and based on this, the above-described idle ejection operation is performed only for the head of the ink to be used (step 514-2). 3).

Thereafter, while reading the image data from the image memory 107, color printing is performed line by line (step 514-).
4) A line feed is performed (step 514-5) and the above process is repeated until the number of remaining lines in the block becomes 0, that is, the process for 8 lines is repeated (step 514-6).

Here, the moving distance of the herad carriage 16 in the direction of the arrow 40 in FIG. 3 when performing color printing for each - line will be explained.

As mentioned above, in order to record a color image over the entire width of the paper, - the carriage position at the start of color printing for each line is the position where the black inkjet head 208k faces the starting edge of the paper; - The carriage position at the end of color printing for each line is the position where the yellow inkjet head 20Y faces the end of the paper. That is, the head carriage 16 reciprocates between the above-mentioned start position and end position, and performs a printing operation only when moving in the direction of arrow 40. CPU10I drives the drive motor 17 to move the head carriage 16.
gives commands to the control circuit to control the driving state.

When the number of remaining lines in the block becomes 0, the remaining number of blocks is checked, and if it is not 0, the process returns to step 514-1 and repeats the process (step 514-7). When the number of remaining blocks is equal to 0, a color print termination operation to be described later is performed (step 514-8).

The time of black and white printing operation will be explained. The Bk image data stored in the hard disk 60 is read out in blocks as described above and stored in the image memory 107Bk (step 515-1). Next, the above-described idle ejection operation is performed for the Bk head (step 515-2).

Thereafter, each line is printed in black and white while reading the image data from the image memory 107Bk (step 515-).
3), performs a line feed (step 515-4), and repeats the above process until the number of remaining lines in the block becomes 0 (step 5
15-5).

Here, the moving distance of the helad carriage 16 in the direction of the arrow 4o in FIG. 3 when performing black and white printing for every - line will be explained.

As mentioned above, in order to record a monochrome image over the entire width of the paper, the carriage position at the start of monochrome printing for each line is the position where the black inkjet head 20Bk is opposite to the starting edge of the paper, and The carriage position at the end of each black and white print is the black inkjet head 20.
Bk is the position relative to the end of the paper. That is, the head carriage 16 reciprocates between the above-mentioned start position and end position, and performs a printing operation only when moving in the direction of arrow 40.

CPUl0I determines that the number of remaining lines in the block becomes O. This determination is made based on the amount of data read from the hard disk 60 and printed.

Check the number of remaining blocks, and if it is not 0, return to step 515-1 and repeat the process (step 5
15-6). Further, when the number of remaining blocks is equal to O, a black and white print termination operation, which will be described later, is performed. (Step 515-7
). Detecting that the number of remaining blocks has become 0 is determined by the CPUI-Ol from the output of the decompression processing circuit 128.

Next, color error reception will be explained using FIG. 16, and monochrome error reception will be explained using FIG. 17.

As mentioned above, color error reception is Y, M, and C.

This is the case when any one of the four Bk color IJCs is out of ink, or there is a non-ejecting nozzle in any one of the four colors. Therefore, first, the IJC color (hereinafter referred to as trouble ink color) in which ink has run out or has not been ejected is checked (step 516-1), and subsequent operations are determined accordingly. That is, the trouble ink colors are Bk, Y, and M.

If there is at least one of the three colors in C, the trouble ink color and the message that cannot be printed are printed on the LC.
Display on D115 and end (step 516-2)
. This allows the user to recognize that the device has become unusable. Also, if the trouble ink color is at least one of the three colors YSM and C, and black is normal,
After displaying a message on the LCD 115 (step 516-3) indicating that the trouble ink color and the color image will be converted to black and white and printed, a color to black conversion printing operation to be described later is performed (steps S16-4).

If the troublesome ink is only Bk, a Bk ink abnormality is displayed on the LCDll5 (step s165).
After printing, the above-mentioned color printing operation (S16-6)
I do.

Next, monochrome error reception will be explained using FIG. 17.

As described above, monochrome error reception occurs when IJCBk is out of ink or has a non-ejecting nozzle. However, the three-color IJC of Y and MSC has not been checked, so in order to find out whether it can be used as a substitute, we first
, M, and C are checked for non-ejection (step 517-1), and subsequent operations are determined accordingly.

That is, if all three Y, M, and C heads have non-ejecting nozzles, a trouble message is displayed for all four colors of Y, M, C, and Bk on the LCD 115, and the process ends (step 517-2). . Also, all three heads of YSM and C are OK.
If so, display a print message on the LCD 115 expressing Bk ink abnormality and black using Y, M, and C (step 517-3), and then display black → UY as described later.
An MC conversion print operation is performed (step 517-4).

If 1 or 2 types of YSM and C heads are OK, after converting Bk ink error and black to one usable color and displaying a print message on the LCD 115 (step 517-5), A black to color conversion printing operation, which will be described later, is performed (step 517-6). At this time, when two colors are available, the priority for determining one color to be used is in the order of M+C-+Y.

Next, the color→black conversion printing operation described above is performed in the 181st step.
11, the black to YMC conversion printing operation will be explained with reference to FIG. 19, and the black to color conversion printing operation will be explained using FIG. 20.

The color → black conversion printing operation will be explained. First, Y and M stored in the hard disk 60.

The image data of each color of C and Bk is read out in blocks as described above, and expanded by the circuit 128, and stored in the Y, M, C, and Bk image memory 107Y for each color.

107M, 107C, and 107Bk (step 518-1). Next, the previous image memory 107Y, 107
The Y and MXC color image data are read out one pixel each from the M and IOC, and the YS is converted using the former image conversion means 63.
M.

The C color image data is converted to black image data and stored in the image memory 107Bk (step 3182).

Here, we will not specifically explain the means for converting color image data to black image data, but for example,
It can be obtained by multiplying each by a predetermined coefficient and adding them. In short, it is sufficient if a color image can be converted into density image data by digital calculation.

The subsequent operations are exactly the same as steps 515-2 and subsequent steps in the black-and-white printing operation shown in FIG. 15 described above.

Next, the black→YMC conversion printing operation will be explained using FIG. 19. The Bk image data stored in the earlier hard disk 60 is read out in blocks as described above,
Decompress and store in image memory 107Bk (step 51
9-1).

Next, the Bk image data is read from the image memory 107Bk, and the image memory 107Y, 107M, 107C
The data is transferred as is by the DMA controller 117 (step 519-2). At this time, when this inter-memory transfer work is completed, all data in the image memory 107Bk is cleared. Next, the above-described idle ejection operation is performed for the three-color heads of Y and MSC (step 519-3).
. The subsequent operations are the 14th color print operation described above.
This is exactly the same as step 514-4 and subsequent steps in the figure.

Next, the black to color conversion printing operation will be explained using FIG. 20. reading out the Bk image data stored in the hard disk 6o in units of blocks;
Store in image memory 1078k (step S20-1
).

Next, one color to be used is determined from among the available colors according to the conditions described above, and the Bk image data read out pixel by pixel from the image memory 107Bk is transferred to the image memory of that color (step 520 -2).

At this time, all data in the image memory 107Bk is cleared when this inter-memory transfer work is completed. Next, the above-described idle ejection operation is performed for the head of the color to be used (step 520-3). The subsequent operations are exactly the same as the color printing operation described above, step 5I4-4 and subsequent steps in FIG. 14.

Next, the color print termination operation described above will be explained using FIG. 21, and the monochrome print termination operation will be explained using FIG. 22.

First, the color print ending operation will be explained. After printing for one page is completed, the above-mentioned ejection failure check is performed for the four printers Y, M, and C5Bk (step 52).
1-1) If the result is that all four colors are OK, it is considered that the printing was successful and the data on the hard disk 60 is erased (step 521-2). Or, when the next data is received, it will be overwritten and cannot be read.Also, if there is NG in even one color, it may be that the printing is not done properly, and the hard disk 6
A message indicating a possible image defect is displayed on the LCD 115 while leaving the 0 data as is (step 52).
1-3).

In this case, even if the next data is received, if there is no free space in each memory 107Y-Bk or hard disk 60, printing will not be possible normally even if the received data is refused to be written to the memory. As for the image signal, the data on the hard disk 60 is left unchanged.

The black-and-white print ending operation will be explained. After printing one page, run the above-mentioned ejection failure check.
(step 521-1), and if the result is NG, it is assumed that the printing may not have been done properly, and the data on the hard disk 60 is left as is, and the message indicating the possibility of an image defect is sent as described above. L
Display on the CD 115 (step 522-2). Also, if the result of the non-ejection check is OK, the disk 6
0 data is erased (step 522-3).

The processing of data written in such memory is the same as that described using FIG. 21.

The present invention is applicable not only to the above-mentioned serial printer but also to an inkjet recording device having a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording device as shown in FIG. The present invention can also be suitably applied to facsimile machines.

In FIG. 8, 201A and 201B are a pair of rollers provided to nip and convey the recording medium R in the sub-scanning direction Vs indicated by the arrow. 202Bk, 202Y, 202M, and 202C are full multi-type recording heads that perform black, yellow, magenta, and cyan recording, with nozzles arranged over the entire width of the recording medium R, and in that order, the upstream side in the recording medium conveyance direction. It is arranged from.

Reference numeral 200 denotes a recovery system, which performs ink ejection recovery processing (referred to as ejection recovery processing) such as suction operation from each inkjet or empty ejection operation capping from the head. Instead, they face the recording heads 202B to 202C. However, in this example, in order to perform preheating at an appropriate timing, the number of activations of the discharge recovery process can be significantly reduced.

In particular, in this embodiment, the heads are arranged in order from the bottom of the figure.
Since they are arranged in the order of CSY and MSBk, the recovery system 200 temporarily selects Y, M, and C during monochrome reception operation.

A recovery operation is performed for each Bk head, and then only the Bk head is exposed to the paper, and the other heads MSY and C are moved so that they are not exposed.

Therefore, since heads M and YSC remain capped, reliability is improved.

In addition, FIG. 9 shows the recording heads 202Bk to 202C in FIG.
One appearance is shown. In FIG. 9, 210 is an ink discharge port, 211 is an ink supply pipe, and 212 is a plurality of IC circuits (drive circuits) for driving electrothermal conversion elements.

Further, 213 and 214 are terminals for applying drive signals.

Even when the present invention is applied to a facsimile machine having such a full-line type printer, the same control procedure can be used.

Further, in the embodiment shown in FIG. 3, the color ink head and the Bk ink head are placed on the same carriage, but the present invention is not limited to this, and as shown in FIG. The present invention can be similarly applied even when the device is placed on a carriage.

Further, the present invention can also be applied to a facsimile machine using a so-called piezo-type inkjet recording device, which uses a piezoelectric element as an ink ejection energy source, as a recording system.

(Others) The present invention brings about excellent effects particularly in a bubble jet type recording head and recording apparatus among inkjet recording types. This is because such a system can achieve higher recording density and higher definition.

As for typical configurations and principles thereof, it is preferable to use the basic principles disclosed in, for example, US Pat. No. 4,723,129 and US Pat. No. 4,740,796. This method can be applied to both the so-called on-demand type and continuous type, but especially in the case of the on-demand type, it is necessary to arrange the liquid (ink) in accordance with the sheet and liquid path that hold it. The electrothermal converter that is
By applying at least one drive signal that corresponds to the recorded information and provides a rapid temperature rise exceeding the nuclear slag temperature, the electrothermal transducer generates thermal energy to cause film boiling on the thermally active surface of the recording head. This is effective because it can result in the formation of bubbles in the liquid (ink) that correspond one-to-one to this drive signal. The growth and contraction of the bubble causes liquid (ink) to be ejected through the ejection opening to form at least one droplet. It is more preferable to use this drive signal in a pulse form, since the growth and contraction of bubbles can be carried out immediately and appropriately, making it possible to eject liquid (ink) with particularly excellent responsiveness. This pulse-shaped drive signal is:
U.S. Pat. No. 4,463,359, U.S. Pat. No. 4,345,26
Those described in Specification No. 2 are suitable.

Further, even better recording can be achieved by adopting the conditions described in the specification of US Pat.

The configuration of the recording head includes, in addition to the combination configuration of ejection ports, liquid paths, and electrothermal converters (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, a heat acting section. The present invention also includes configurations using US Pat. No. 4,558,333 and US Pat. No. 4,459,600, which disclose configurations in which the wafer is placed in a bending region. In addition, Japanese Patent Application Laid-Open No. 1989-5 discloses a configuration in which a common slit is used as a discharge part of a plurality of electrothermal converters.
No. 9-123670 and Japanese Patent Application Laid-open No. 5 (1973) disclosing a configuration in which a discharge portion is made to correspond to an opening that absorbs pressure waves of thermal energy.
The effects of the present invention are also effective even with a configuration based on Publication No. 9-138461. In other words, regardless of the form of the printhead, printing can be performed reliably and efficiently.

Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided as a configuration of the recording apparatus, to the present invention, because the effects of the present invention can be further stabilized. Specifically, these include capping means for the recording head, cleaning means, pressure or suction means, preheating means using an electrothermal transducer or another heating element, or a combination thereof; It is also effective to perform a preliminary ejection mode in which ejection is performed separately from printing in order to perform stable printing.

In addition, regarding the type and number of recording heads installed, for example, in addition to one type that corresponds to single-color ink, there is also a plurality of recording heads that correspond to multiple inks with different recording colors and densities. It may be something that can be done.

In addition, the inkjet recording apparatus of this embodiment can be used as an image output terminal for information processing equipment such as a computer, or as a copying device combined with a reader or the like, or as a facsimile device having a transmitting/receiving function. It may be something that you collect.

Although the explanation will be different, the communication control unit N in this embodiment
In the CU, if the receiver is an image communication device conforming to G3 facsimile, for example, an initial identification signal of a non-standard function,
For example, it is possible to transmit a transmission mode, such as a color mode or a monochrome mode, to a receiver using an NSF signal. The user-to-user signal specified in Layer 3 Specification 4.5.24 causes the receiver to select a transmission mode, e.g. color mode,
All you have to do is send it in black and white mode.

According to the present embodiment described above, in a facsimile apparatus having an inkjet recording device in its recording system, there is provided a non-discharge detection means for detecting ink failure from an ink discharge port of the inkjet recording device, and a non-discharge detection means for detecting ink failure after recording is completed. The apparatus further includes a control means for detecting ejection failure, thereby checking whether recording has been performed normally.

As a result, according to this embodiment, by detecting ink ejection failure after the end of printing, it is possible to check whether printing has been performed normally, and using the result, if printing has been performed normally, By deleting image data in memory, you can free up as much memory space as possible.

Also, using the results, if the data is not recorded correctly, an error message can be returned to the sender.

There are effects as described above.

[Other Examples]

In this embodiment, ink non-discharge is detected after recording is completed, and if ink non-discharge is detected, a message is displayed on the LCD, but the present invention is not limited to this. Of course, if ink failure is detected, an error signal may also be sent to the transmission source.

Further, although the image storage memory in this embodiment is configured with a hard disk, the present invention is not limited to this, and may be implemented with other magnetic storage devices such as a floppy disk, optical memory, IC card, semiconductor memory such as DRAM, etc. Of course I don't mind.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to reliably determine that received image data has been recorded on a recording material.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the present invention, FIG. 2 is a perspective view showing an example of a bubble jet type inkjet cartridge to which the present invention can be applied, and FIG. 3 is an inkjet cartridge shown in FIG. A perspective view showing an example of the configuration of a recording system of a facsimile machine equipped with a cartridge and to which the present invention can be applied; FIG. 4 is a block diagram showing an example of the circuit configuration of the color determining means used in the embodiment of the present invention; FIG. A plan view showing an example of the arrangement and configuration of a non-discharge detection device according to an embodiment of the present invention, FIG. 6 is an explanatory diagram showing an example of a non-discharge detection pattern printed when detecting non-discharge, and FIG. 7 is an embodiment of the present invention. FIG. 8 is a perspective view showing a configuration example of a full-line printer according to another embodiment; FIG. 9 is an enlarged view of the main part of FIG. 8; FIG. 10 11 is a flowchart showing the main routine of the control method of this embodiment, FIG. 12 is a flowchart explaining the subroutine color reception mode of FIG. 11, and FIG. 13 is a diagram showing another example of FIG. 3. 11 is a flowchart explaining the subroutine black and white reception mode; FIG. 14 is a flowchart explaining the subroutine color print operation of FIG. 12; FIG. 15 is a flowchart explaining the subroutine black and white print operation of FIG. 13; 12 is a flowchart explaining the subroutine color error reception in FIG. 12, FIG. 17 is a flowchart explaining the subroutine monochrome error reception in FIG. 13, and FIG. 18 is a flowchart explaining the subroutine color → black conversion print operation in FIG. 16. Flowchart, Figure 19 is the 17th
Figure 20 is a flowchart explaining the subroutine in Figure 17 → black MMC conversion printing operation, Figure 21 is a flowchart explaining the subroutine in Figure 17 -> black color conversion printing operation, and Figure 21 explains the subroutine color print ending operation in Figure 14. FIG. 22 is a flowchart illustrating the subroutine monochrome print termination operation of FIG. 15. 17.22... Drive motor 20Ek... Black ink head 20C... Cyan ink head 20M... Magenta ink head 20Y... Yellow ink head 26... Recovery device 26A... Cap section 60. ...Hard disk 61...Used color determining means 62...Mode determining means 63...Image converting means 64...Black print switch 101...CPU 104...Modem 105...NCU 113...・No need for non-ejection sensor l Dry moxibustion l? Turn - + 1111111 Figure 8 Figure 15 to Figure 1c1

Claims (4)

[Claims] (1) Non-discharge detection means for detecting non-discharge of ink of the inkjet recording means for recording received data, and control to cause the non-discharge detection means to detect non-discharge after completion of recording of the received data. A facsimile device characterized by comprising means. (2) comprising a memory for temporarily storing received image data; the control means causes the inkjet recording means to perform recording according to the image data stored in the memory;
2. The facsimile apparatus according to claim 1, wherein the facsimile apparatus is controlled so that the image data in the memory can be erased if no ink ejection failure is detected after the end of printing. (3) A recovery processing means for restoring the state of the ink ejection port is provided, and the control means causes non-ejection detection to be performed before a recording operation, and when ink non-ejection is detected, recovery processing by the recovery processing means is provided. 3. The facsimile apparatus according to claim 1, wherein the ejection failure detecting means detects that there is no ink ejection failure before proceeding to the recording operation. (4) The facsimile apparatus according to any one of claims (1) and (2), wherein the control means transmits an error signal to the other party if ink failure is detected after printing is completed.