JPH07327124A - Image recording device - Google Patents

Abstract

PURPOSE:To discriminate accurately a recording state of received image data by recording a prescribed pattern image in a recording area on a recording medium without reducing and dividing a received image. CONSTITUTION:Image data received by a communication section 20 are stored in a memory 4 and sent to a recording section 11 after resolution is converted and recorded on recording paper by the ink jet system. When a tail end of the recording paper is sensed at an upperstream side of a recording position during the recording, the data of a prescribed quantity are recorded or recording paper is fed and final main scanning of this page is conducted. The main scanning is conducted based on data obtained by ORing received image data and image data corresponding to a footer mark to prevent duplicate recording of the received image and the footer mark. The density of the footer mark is sensed and the recording state of the image data of a current page is discriminated based on the detection result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus for recording a predetermined pattern image in a predetermined area on a recording material and discriminating a recording state of image data according to a recording density of the predetermined pattern image. .

[0002]

2. Description of the Related Art Conventionally, in an ink jet type recording apparatus, various means for detecting the presence or absence of ink in a recording head have been proposed. However, non-ejection of ink due to clogging of nozzles cannot be detected.

Although the recovery of this problem is left to the user, when an ink jet type recording apparatus is used as a recording apparatus for a facsimile, unmanned recording is often performed, so that ink is not ejected. If it occurs, there is a fatal problem that information is not actually transmitted although the communication is normal in the facsimile procedure.

Therefore, a predetermined footer mark is recorded at a predetermined position on the trailing edge of the recording paper after the image recording is completed, and the density of the recording paper at the recording position of the footer mark is detected by a photo sensor or the like, and the density is detected according to the detected image density. A proposal has been made to judge whether or not the recording was actually performed normally.

[0005]

However, the above-mentioned conventional example has the following drawbacks when the standard cut sheet is used as the recording sheet.

That is, when the length of the transmitted original is the same standard length as the recording paper, the footer mark is recorded by superimposing it on an image of the same size, but the footer mark is black at the recording position. When an image is recorded, twice as much ink as usual is attached to the corresponding position, and the above-described photosensor or the like may malfunction and the density of the recording paper may not be normally detected.

If the footer mark is not recorded so as to overlap the image, it is necessary to secure the footer mark recording area outside the image recording area, and as a result, the length of the image that can be recorded on one recording sheet becomes small. Therefore, the image is divided into two and recorded at the same size, or the image is reduced and recorded on one sheet of recording paper, or a part of the image is cut and recorded on one sheet of recording paper. Inconvenience.

The present invention has been made in view of the above points,
An object of the invention is to provide an image recording apparatus capable of recording a predetermined pattern image in a recording area on a recording material and accurately determining a recording state of image data without reducing or dividing the image data. To provide.

[0009]

In order to achieve the above object, the image recording apparatus according to the first aspect of the invention comprises a recording means for recording an image on a recording material according to image data at a predetermined position on the recording material. In the image recording apparatus, which records a predetermined pattern image on the recording medium, detects the density of the predetermined pattern image, and determines the recording state according to the detection result, a logic of image data and data corresponding to the predetermined pattern image. It is characterized in that it has a processing means for taking a sum, and operates the recording means on the basis of data obtained by taking a logical sum by the processing means to record an image on a recording material.

The image recording apparatus according to the second invention records an image on a recording material according to the receiving means for receiving the image data transmitted from the other side and the image data received by the receiving means. Recording means for controlling the recording means so as to record a predetermined pattern image at a predetermined position of a recording material on which a predetermined amount of image data is recorded, and detection for detecting the density of the predetermined pattern image Means and a discriminating means for discriminating the recording state of the image data received according to the detection result of the detecting means, and the recording control means has the image data received by the receiving means and the predetermined pattern image. It is characterized in that it has a processing means for calculating a logical sum with the image data according to, and drives the recording means according to the image data obtained by the processing means.

According to the first invention, the logical sum of the image data and the data of the predetermined pattern image is calculated, and the image to be recorded on the recording material is determined as the predetermined pattern image in accordance with the image data obtained thereby. Are recorded without overlapping, and the recording state is determined according to the density of the predetermined pattern image.

According to the second aspect of the invention, the logical sum of the received image data and the predetermined pattern image data is calculated, and the received image and the predetermined pattern image are formed on the recording material according to the image data obtained thereby. Recording is performed without overlapping, and the recording state of the received image is determined according to the density of the predetermined pattern image.

[0013]

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

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of a main part of a facsimile apparatus according to the present invention.
Reference numeral 1 denotes a recording device section using a head having a recording density of 360 dpi × 360 dpi used for recording on a recording medium such as recording paper. In this embodiment, thermal energy is used to cause a state change in ink. To eject ink from the head. 2 is 8 pel x 7.7 line
/ Mm resolution (hereinafter referred to as resolution A) and 8p
A resolution conversion circuit for converting a resolution of el × 3.85 line / mm (hereinafter referred to as resolution B) to a resolution of 360 dpi × 360 dpi (hereinafter referred to as resolution C), and 3 has a resolution of 8 pel × 3 for reading a document. ．
85 line / mm or 8 pel x 7.7 line /
mm is a 4 Mbit memory unit for storing image information and received image information of an original read by the reader unit 3 and control data for controlling the entire apparatus, and 5 is a recording apparatus unit 1. A switching circuit for selecting whether or not to convert the resolution of the data to be transmitted to the device, when the connection is made to the 5a side, the resolution is converted by the resolution conversion circuit 2, and when it is connected to the 5b side, the resolution is not converted. Reference numeral 6 is a CPU that controls the entire apparatus, and reference numeral 7 is a control signal line for the CPU 6 to control the recording apparatus unit 1. The CPU 6 can partially mask or add information to the image information stored in the memory unit 4. Reference numeral 20 denotes a communication unit that transmits and receives image data to and from the other party via a line, and includes MODEM, NCU and the like. There are other well-known components such as an operation unit, but they are not shown here.

Next, the configuration of the recording device section 1 will be described in detail with reference to FIG. 11 is 360 dpi in the sub-scanning direction (arrow A direction)
With a recording density of 64 dots and one row of nozzles (ejection ports), the recording density for recording while moving in the main scanning direction (the direction perpendicular to the paper surface, the direction of arrow B in FIG. 3) by a carriage not shown is 360 dpi × 360 dpi A recording unit having a head of 12 and a recording unit 12 for supplying / discharging recording paper and for determining the position in the sub-scanning direction when recording by the recording unit 11
A recording paper conveying unit having a step conveyance accuracy, 13 is a recording paper sensor for detecting the presence or absence of the recording paper and the leading edge and the trailing edge, and is turned on when the recording paper is present, and is turned off when the recording paper is not present. Become. Reference numeral 14 is a reflection type photo sensor for detecting a value corresponding to a ratio of an ink-attached portion of an image recorded on the recording surface of the recording paper. The recording control unit 15 converts the image data sent from the CPU 6 so that the recording unit 11 can record the image data, and according to the instruction of the control data sent from the CPU 6, the recording unit 11, the recording conveyance unit 12, the recording paper sensor. Control 13. Reference numeral 16 is a cut sheet on which a received image or an image read by the reader 3 is recorded.

Next, the principle of resolution conversion will be described.

In a facsimile apparatus having different reading and recording resolutions or a recording density different from the communication resolution, a resolution conversion circuit is required at the time of reception and copying in order to record at the same size as the original. For example, 8 pel x
When image data read at a resolution of 7.7 line / mm is recorded by a head having a resolution of 360 dpi × 360 dpi, if one pixel for reading corresponds to one pixel for recording, the main scanning direction is 203.2 dpi ( ≒ 8 pel) / 360
dpi = 0.564, sub-scanning direction 195.6 dpi (≈7.7 l / mm) /
An image is recorded at a reduction ratio of 360 dpi = 0.543. Therefore, when the original image data 9 bits are converted to 16 bits in the main scanning direction and 6 bits are converted to 9 bits in the sub scanning direction, the main scanning direction is 0.564 × (16/9) = 1.003, the sub scanning direction is 0.543 × ( 11/6) = 0.966, which means that recording can be performed at almost the same size.

FIG. 5 is a schematic diagram showing the concept of resolution conversion when copying a read image and recording a received image. Here, 5a indicates resolution conversion in the main scanning direction, and the read pixel 51a is set to the recording pixel 2
51a 'for 53 pixels, and 53a for 53 pixels for one recording pixel
By substituting a ', it becomes possible to perform equal-magnification recording in the main scanning direction. Reference numeral 5b indicates resolution conversion in the sub-scanning direction. In the sub-scanning direction, the read pixel one line 51b is replaced by two recording pixel lines 51b 'and 53b' by one recording pixel line 53b '. It is possible to record at the same size. This resolution conversion circuit uses a simple latch circuit in the main scanning direction and writes twice on the same line by software control in the sub scanning direction.

The memory 4 has a MODEM (not shown).
The image data received in step 1 and the image data read by the reader unit 3 are stored, and the arbitrary image data created by the CPU 6 and the control data for the recording control unit 15 are stored.

Therefore, in facsimile reception, 8p
Since the image data is sent at a resolution of el × 3 85 or 7.7 lines / mm, the resolution conversion circuit 2 is connected by connecting the switching circuit 5 to the image data stored in the memory 4 from a MODEM (not shown). The CPU 6 controls so that the resolution is converted before recording.

The image data read by the reader unit 3 is also subjected to the same processing as above and copied.

On the other hand, when the switching circuit 5 is connected to the 5a side, the image data in the memory 4 can be recorded by the recording device section 1 without causing resolution conversion, so that one pixel of the image data corresponds to one pixel of recording. Further, when sending control data to the recording control unit 15, it is connected to the 5b side.

FIG. 3 shows a recording paper sensor 13 and a photo sensor 1.
4 shows the positional relationship of 4, and 17 shows the position at which the photosensor 14 detects a value corresponding to the ratio of the ink-attached portion of the image recorded on the recording surface of the recording paper. 14 and 17 are arranged so as to be aligned in a straight line in the recording paper conveyance direction (direction A). In addition, these are arranged at the leftmost end of the recordable range on the recording paper 16 of the recording unit 11. Further, the predetermined position 17 can be set to a position where a white recording paper background of a predetermined length remains at the rear end of the recording paper 16.

Next, the control when recording the image received by facsimile will be described. When the leading edge of the recording paper 16 reaches the recording paper sensor 13, the sensor 13 is turned on, and the recording paper conveying unit 12 conveys a predetermined length from there to reach the recording position of the recording unit 11.
To move. From there, the recording control unit 15 controls the recording unit 11 and the recording paper conveying unit 12 to start recording the image data after the resolution conversion from the resolution conversion circuit 2 on the recording paper 16. Subsequent control will be described with reference to the flowchart of FIG. In the present embodiment, the received image data is stored and recorded in the memory 4 in parallel.

While recording the received image on the recording paper 16, it is checked in S1 that the recording paper sensor 13 is in the OFF state. When the recording paper sensor 13 is in the OFF state (that is, the trailing edge of the recording paper 16 is detected), the process proceeds to S2. The recording paper 16 is conveyed by the recording paper conveying unit 12 until the predetermined position 17 reaches the recording position of the recording unit 11. The number of transport steps is N steps (number of movement distance divided by 1/360 inch). Next, in S3, the CPU 6 causes the memory 4 which is the final data of this page.
Of the image data for 64 lines within the predetermined position 17
A predetermined image pattern (for example, about 4.5 mm square corresponding to the recording width of 64 dots of the recording unit 11 is recorded) so that sufficient image data can be recorded so that the photo sensor 14 can detect that the ink has adhered to the. Image processing is performed to obtain a logical sum of the image data corresponding to the square all-black image), and in S4, the recording unit 11 records the image data after the image processing is performed. The image data recorded at the predetermined position 17 after the image processing in S3 is hereinafter referred to as a footer mark.

In step S5, the recording paper 16 is conveyed by the recording paper conveyor 12 so that the predetermined position 17 moves to the detection position of the photo sensor 14. The number of transport steps is M steps. In S6, the photo sensor 14 is used to move the predetermined position 17
To detect the concentration of. If the footer mark is normally recorded at the predetermined position 17, the reflected light is small and a value indicating that the ink adhesion rate is equal to or higher than a predetermined value is detected, and it is determined that the footer mark can be detected. It is determined that the recording is normal, and the image data of the current page stored in the memory 4 is erased. If the recording portion 11 is out of ink, or if the recording portion 11 is clogged with nozzles, etc., and recording cannot be performed normally, the footer mark is not recorded at the predetermined position 17, or even if it is recorded, the footer mark is attached. Since the amount of ink used is small, the reflected light at the predetermined position 17 becomes large, a value indicating that the ink adhesion rate is less than the predetermined value is detected, it is determined that the footer mark cannot be detected, and the recording of this page is not performed. Judge that it was abnormal. In this case, the CPU 6 retains the received image data of the current page stored in the memory 4 without erasing it, and notifies the user of the fact that the recording is abnormal, for example, by issuing a predetermined intermittent tone from a speaker or the like in the facsimile apparatus. Let me know. Then, after the recovery operation and the head replacement, the reception recording is performed again by a predetermined operation procedure to surely complete the recording. When it is detected that the footer mark is not normally recorded, the mode shifts to the alternate reception mode, and the image data of the current page stored in the memory 4 and the image data received thereafter are stored in the memory 4. The image data may be saved, and the saved image data may be recorded by a predetermined operation procedure after the recovery operation or the head replacement. Also,
When it is detected that the footer mark is not normally recorded, the recovery operation is automatically performed, the previous image is recorded and the footer mark is detected again, and it is detected that the footer mark is not normally recorded again. In this case, recording abnormality processing may be performed.

Further, in the present embodiment, the CPU 6 controls so that the above-mentioned image processing and density detection are performed only when the received image is recorded and not when the copy or the report is recorded. This is because the user can perform error recovery on the spot when copying or recording a report.

When recording on cut paper, the received image information for one page may not be recorded on one cut paper. In this case, well-known divided recording is performed, and control is performed so that the above-described processing is always performed for each cut sheet.

FIG. 6 shows the signal names of the control signal line 7 of FIG. This control signal conforms to the well-known Centronics interface as an interface of a printer used as a terminal such as a personal computer.
7a is a data line (DATA 1 to 8) for sending control commands and image data to the printer, and 7b is a strobe signal (XSTROBE) and an initialization signal (XINI) of 7a.
T) and 7c are status signals (X
ACKNLG, BUSY, P.M. E. , SELECT, X
ERROR). Reference numerals 7a and 7b are input signals to the printer, and 7c is an output signal from the printer. By using such a control signal, the CPU 6 can control the recording device unit 1 in the same manner as the personal computer controls the printer.

(Embodiment 2) FIG. 7 shows an essential portion of a second embodiment of the present invention, in which a black member 1 for suppressing reflection of light is provided just below a detection position of a photo sensor 14 through which a recording paper 16 passes.
4a is provided, and when the recording paper 16 is not directly above this member 14a, the reflected light to the photosensor 14 is eliminated, and other configurations are the same as those in the first embodiment ( However, the control when recording a facsimile received image is different.). A circuit for binarizing the output of the photo sensor 14 is shown in FIG. By properly setting the reference voltage 14b input to the non-inverting input of the operational amplifier 14d, the output of the photosensor 14 input to the inverting input of the operational amplifier 14d, that is, the detection position (member 14a).
Opamp 14 according to the magnitude of the reflected light from
Detection output 14c can be determined. The detection output 14c is connected to the CPU 6. When the white position of the recording paper 16 is detected and the detection position is lower than the predetermined density, the level of the reflected light to the photo sensor 14 becomes large, and the detection output 14c becomes the high level 1 (white level). Since the reflected light to the photo sensor 14 becomes small when the ink is detected at the portion recorded on the recording paper 16 by the recording unit 11 or when the detection position is above a predetermined density such as when there is no recording paper 16. The detection output 14c becomes low level 0 (black level).

The predetermined position 17 is set such that a recording paper margin of a predetermined length always remains at the rear end of the recording paper 16.

Next, the control when recording a facsimile received image will be described. When the leading edge of the recording paper 16 reaches the recording paper sensor 13, the sensor 13 is turned on, and the recording paper conveying unit 12 conveys a predetermined length from there to reach the recording position of the recording unit 11.
To move. From there, the recording control unit 15 controls the recording unit 11 and the recording paper conveying unit 12 to start recording the image data after the resolution conversion from the resolution conversion circuit 2 on the recording paper 16. The subsequent control will be described with reference to the flowchart of FIG.

While recording on the recording paper 16, it is checked in S11 that the recording paper sensor 13 is turned off.
When the recording medium 16 is turned off (that is, the trailing edge of the recording paper 16 is detected), the process proceeds to S12, and the recording paper conveyance unit 12 conveys the recording paper 16 until the predetermined position 17 reaches the recording position of the recording unit 11. This transfer step number is N steps (moving distance is 1 /
Number divided by 360 inches). Next, in step S13, the CPU 6 causes the memory 4 to be the final data of this page.
Of the image data for 64 lines within the predetermined position 17
A predetermined image pattern (for example, about 4.5 mm square corresponding to the recording width of 64 dots of the recording unit 11 is recorded) so that sufficient image data can be recorded so that the photo sensor 14 can detect that the ink has adhered to the. Image processing for obtaining a logical sum of the image data corresponding to the square all black image) is performed, and S14
At, the recording unit 11 records the image data subjected to the image processing. The image data recorded at the predetermined position 17 after the image processing in S13 is referred to as a footer mark. In S15, the photo sensor 14
The state of the detection output 14c is stored in the memory 4. S16
Then, the recording paper 16 is fed by a predetermined number of steps.
In S17, when the state of the detection output 14c changes, the state is stored in the memory 4. In S18, it is determined whether or not the recording paper 16 is conveyed by the recording paper conveyance unit 12 until the rear end of the recording paper 16 passes the detection position. If NO, S16
If YES, the process proceeds to S19. Here, the number of transport steps from the predetermined position 17 on the recording paper 16 reaching the recording position of the recording unit 11 to passing the detection position by the photo sensor 14 is M steps (the moving distance divided by 1/360 inch). I am trying. In S19, it is determined whether or not the recording is normally performed according to the change pattern of the detection output 14a stored in the memory 4.

FIG. 9 shows the change pattern (P of the detection output 14c).
The correspondence between the patterns 1 to P7) and the judgment of the recording operation will be described. P1 detects the white background of the recording paper 16 in S15,
After that, the black footer mark, the trailing edge margin, and the member 14a after the recording paper 16 is discharged are detected. P2 is S15
In this case, the portion recorded on the recording paper 16 by the recording unit 11 is detected, the trailing edge margin, and the member 14a after the recording paper 16 is discharged are detected after passing the black footer mark. P
3 is a case where the member 14a after the discharge of the last recording paper 16 of the P1 pattern is not detected. P4 is a case where the member 14a after discharging the last recording paper 16 of the pattern P2 is not detected. P5 is recording paper 16 in S15
In this case, the white background is detected, and the trailing edge margin and the member 14a after the recording paper 16 is discharged are detected. P6 is a case where the white background of the recording paper 16 is detected in S15, and the white background of the recording paper 16 is continued to be detected thereafter. P7 is a case where the black level is continuously detected.

In the case of P1 and P2, it is judged that the recording is normally completed and the recording paper 16 is also normally ejected. P3 and P4
In the case of, it is determined that the recording is normally completed but the recording paper 16 is not normally discharged. In the case of P5, it is determined that the recording sheet 16 is normally ejected because recording cannot be performed normally due to lack of ink in the recording unit 11 because the footer mark cannot be detected, nozzle clogging, and the like. In the case of P6, similarly to P5, it is determined that the normal recording cannot be performed and the recording paper 16 is not normally discharged.
In P7, it is determined that the recording paper 16 is not fed due to a defect in the recording paper transport unit 12 while the recorded black portion is detected, or that the recording paper having a high background density is used.

In the case of P3 and P4, the user is informed that the recording paper is not conveyed properly, for example, by issuing a predetermined intermittent tone from a speaker or the like in the facsimile apparatus, and urges the user to cancel the recording paper jam.

In the case of P5, P6 and P7, the CPU 6 does not erase the received image data stored in the memory 4,
It informs the user that the recording is abnormal, for example, by issuing a predetermined intermittent tone from the speaker in the facsimile machine, and after receiving the recovery operation or replacing the head, the reception operation is performed again by the predetermined operation procedure to ensure the recording. I am trying to complete the record.

In the first embodiment, it is premised that there is a footer mark at a predetermined position on the recording paper. Therefore, if the user forcibly pulls out the recording paper immediately after recording the footer mark, the recording paper is detected at the detection position. Since the footer mark is detected in the absence of the footer mark, the black level is detected in any case and it is determined that the recording is normally performed. However, in the present embodiment, such a problem does not occur.

The above-described footer mark recording is controlled by the CPU 6 so that it is performed only when a received image is recorded and not when a copy or a report is recorded.

It should be noted that, for example, the front end of the recording paper 16 is attached to the sensor 1
The recording paper transport unit 1 for a predetermined number of steps after detection in 3
If the sensor 13 cannot detect the trailing edge of the recording paper 16 even if the recording paper 16 is conveyed by 2, it means that a conveyance failure such as a recording paper jam has occurred, or a recording paper of a predetermined length or more has been set. It is possible to judge and detect an abnormality before recording the footer mark. At this time, for example, a speaker or the like in the facsimile machine emits a predetermined intermittent tone to notify the user and prompt the user to cancel the abnormal state. Therefore, even if it is assumed that the control sheet has advanced to S14, it can be considered that the recording sheet is also ejected normally. Therefore, it is not necessary to compare the patterns P1 and P2 in FIG. 9, and it is sufficient to determine whether or not the recording is normally performed only by P3 and P4.

When the size of the recording paper used is limited (including the case where the user can select with a switch or the like), the image size (including the footer mark) that can be recorded on one recording paper is determined. It is possible to control the recording by feeding the recording paper to the predetermined leading recording position after detecting the leading edge of the recording paper. Also at this time, the image size is determined so that a recording paper margin of a predetermined length is formed between the trailing edge of the footer mark and the trailing edge of the recording paper. If a recording paper shorter than the limited recording paper size is set, the sensor 13 detects the trailing edge of the recording paper 16 during the recording operation. In this case, "Please check the recording paper size" is displayed on the LCD along with a warning sound to warn the user.
Further, when a recording paper longer than the limited recording paper size is set or a recording paper jam occurs, the sensor 13 causes the recording paper 16 to be ejected after the M steps are conveyed by the recording paper ejection operation after the footer mark is recorded. This can be seen by not detecting the trailing edge of. At this time, "Please check the recording paper" is displayed on the LCD with a warning sound to warn the user.

By the way, since the recording apparatus using the head as described above generally has a high resolution, it can be used as a printer for a personal computer or the like. Therefore, it is also possible to add a printer interface to form a facsimile machine with a printer function. FIG. 11 is a block diagram of a main part, and shows a part added from the resolution conversion circuit 2 and the switching circuit 5 of FIG. 1 to the path of the recording control unit 15. Reference numeral 30 is a printer interface connector (generally a Centronics interface) for connecting a personal computer, 31 is a CPU through the route of the control signal line 7.
6 is a control switching circuit that switches under the control of 6.
The user can select the mode of the facsimile or printer by pressing the mode selection button on the operation unit (not shown). CPU when used as a facsimile
By connecting the control switching circuit 31 to the side 31a by 6, it is possible to operate as the above-mentioned facsimile. When used as a printer, the control switching circuit 31 is connected to the side 31b by the CPU 6 so that the printer can be operated by the control of the personal computer connected to the connector 30. Since the control signal line 7 complies with the Centronics interface as described above, such simple switching is possible.

With this configuration, footer mark recording is not performed in the printer mode.

Further, the footer mark is not recorded even in the copy mode in which the image read by the reader 3 is recorded.

In the above embodiment, the ink jet type apparatus for forming recording by forming flying droplets by utilizing thermal energy among the ink jet recording methods has been described as an example.

With regard to its typical structure and principle, see, for example, US Pat. No. 4,723,129, US Pat.
What is done using the basic principles disclosed in the '740796 specification is preferred. This method can be applied to both the so-called on-demand type and continuous type. In particular, in the case of the on-demand type, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal to the electrothermal converter, which corresponds to the recorded information and causes a rapid temperature rise exceeding nucleate boiling, thermal energy is generated in the electrothermal converter, and a recording head is produced. This is effective because film boiling is caused on the heat-acting surface and the bubbles in the liquid (ink) corresponding to this drive signal in a one-to-one relationship can be formed. The liquid (ink) is ejected through the ejection openings by the growth and contraction of the bubbles to form at least one droplet.
It is more preferable to make this drive signal into a pulse shape, because the bubble growth and contraction are immediately and appropriately performed, so that the ejection of the liquid (ink) with excellent responsiveness can be achieved.

As this pulse-shaped drive signal, US Pat. No. 4,463,359 and US Pat. No. 43452 are used.
Those as described in US Pat. No. 62 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the ejection port, the liquid passage, and the electrothermal converter (the linear liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. US Pat. No. 4,558,333, US Pat. No. 4,558,333, which discloses a configuration in which a heat acting portion is arranged in a bending region.
A configuration using the specification of No. 459600 may be used.

In addition, JP-A-59-123670 discloses a structure in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and a pressure wave of thermal energy is absorbed. A configuration based on Japanese Patent Application Laid-Open No. 59-138461, which discloses a configuration in which the opening corresponds to the ejection portion, may be adopted.

In addition, by being attached to the apparatus main body, it can be electrically connected to the apparatus main body and can be supplied with ink from the apparatus main body by a replaceable chip type recording head or the recording head itself. The present invention is also effective when a cartridge-type recording head provided with an ink tank is used.

Further, it is preferable to add recovery means, preliminary auxiliary means, etc. to the recording head because the effects of the present invention can be further stabilized. Specific examples thereof include capping means, cleaning means, pressurizing or suctioning means for the recording head, preheating means using an electrothermal converter or another heating element or a combination thereof, and recording. It is also effective to perform a stable recording by performing a preliminary discharge mode in which another discharge is performed.

Further, the recording mode of the recording apparatus is not limited to the recording mode only for the mainstream color such as black, but the recording head may be integrally formed or a plurality of combinations may be used. Alternatively, the device may be provided with at least one of full colors by color mixing.

In the embodiments of the present invention described above, the ink is described as a liquid, but it is an ink that solidifies at room temperature or lower and that softens at room temperature, or is a liquid, or the above-mentioned. In the inkjet method, the temperature of the ink itself is generally adjusted within a range of 30 ° C. or higher and 70 ° C. or lower to control the temperature of the ink so that the viscosity of the ink is within a stable ejection range. It may be in a liquid form.

In addition, the temperature rise due to the thermal energy is positively prevented by using it as the energy for changing the state of the ink from the solid state to the liquid state, or the ink is solidified in a standing state for the purpose of preventing evaporation of the ink. In some cases, such as ink that is liquefied by applying heat energy according to a recording signal and ejected as a liquid ink, or one that has already started to solidify when it reaches a recording medium. It is also possible to use an ink that has the property of being liquefied only by heat energy. In such a case, the ink is retained as a liquid or solid in the recesses or through holes of the porous sheet as described in JP-A-54-56847 or JP-A-60-71260, It may be configured to face the electrothermal converter. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

Further, as a form of the recording apparatus according to the present invention, other than the form of the above-mentioned facsimile, it is integrally or separately provided as an image output terminal of information processing equipment such as a word processor or a computer. ,
It may be in the form of a copying apparatus combined with a reader or the like.

Further, the ink droplet is not limited to be ejected by using thermal energy, and the ink droplet may be ejected by using a piezo element or the like.

[0057]

As described above, according to the present invention, the logical sum of the image data and the predetermined pattern image data is obtained, and the recording is performed according to the data obtained thereby. It is possible to accurately determine the recording state without reducing or dividing the image for securing and preventing double recording of the image to be recorded and the predetermined pattern image.

Further, in the device for recording the received image data, the logical sum of the received image data and the predetermined pattern image data is taken, and the recording is performed according to the data obtained thereby, so that the received image is reduced or divided. In addition, double recording of the received image and the predetermined pattern image can be prevented without fail, and the accurate recording state can be determined.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a layout diagram of components of the recording apparatus.

FIG. 3 is a diagram showing a relationship between a recording sensor, a photo sensor, and a predetermined position for density detection.

FIG. 4 is a flowchart of a recording operation according to the first exemplary embodiment.

FIG. 5 is a conceptual diagram of resolution conversion in a main scanning direction and a sub scanning direction.

FIG. 6 is a diagram showing control signals for controlling the recording apparatus.

FIG. 7 is a layout diagram illustrating components of a recording apparatus according to a second embodiment.

FIG. 8 is a flowchart of a recording operation according to the second embodiment.

FIG. 9 is a diagram showing the correspondence between the change pattern of the detection output 14a and the judgment of the recording operation.

FIG. 10 is a circuit diagram of means for binarizing the output of the photo sensor.

FIG. 11 is a block diagram of a portion added to a facsimile device having a printer interface.

[Explanation of symbols]

 1 recording device section 2 resolution conversion circuit 3 reader section 4 memory 5 switching circuit 6 CPU 7 control signal line 11 recording section 12 recording sheet conveying section 13 recording sheet sensor 14 photo sensor 15 recording control section 17 recording sheet density detection position

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Claims (14)

[Claims] 1. A recording means for recording an image on a recording material according to image data records a predetermined pattern image at a predetermined position on the recording material, detects the density of the predetermined pattern image, and outputs the detection result. In the image recording apparatus that determines the recording state according to the data, the image data and the data corresponding to the predetermined pattern image have a processing unit that takes a logical sum, and the data obtained by taking a logical sum by the processing unit An image recording apparatus for operating the recording means based on the above to record an image on a recording material. 2. The image recording apparatus according to claim 1, wherein the predetermined pattern image is recorded on a rear end portion of a recording material on which a predetermined amount of image data is recorded. 3. The image recording apparatus according to claim 2, wherein the predetermined amount of image data is image data for one page. 4. When the density of the predetermined pattern image is equal to or higher than a reference value, it is determined that the image is normally recorded, and when the density of the predetermined pattern image is lower than the reference value, it is determined that the image is not normally recorded. The image recording apparatus according to claim 1, which is characterized in that. 5. The image recording apparatus according to claim 1, wherein the recording unit has a recording head that ejects ink according to image data. 6. The image recording apparatus according to claim 5, wherein the recording head ejects an ink droplet from an ejection port by causing a state change in the ink by using thermal energy. 7. A receiving means for receiving image data transmitted from the other side, a recording means for recording an image on a recording material according to the image data received by the receiving means, and a predetermined amount of image data. Recording control means for controlling the recording means to record a predetermined pattern image at a predetermined position on a recording material on which is recorded, detection means for detecting the density of the predetermined pattern image, and a detection result of the detection means. The recording control means determines the logical sum of the image data received by the receiving means and the image data corresponding to the predetermined pattern image. An image recording apparatus comprising: a processing unit that performs calculation, and driving the recording unit according to image data obtained by the processing unit. 8. The image recording apparatus according to claim 7, wherein the predetermined pattern image is recorded on a rear end portion of a recording material on which a predetermined amount of image data is recorded. 9. The image recording apparatus according to claim 8, wherein the predetermined amount of image data is image data for one page. 10. The storage device further comprises a storage device for storing the image data received by the receiving device, and a storage control device for controlling the storage device in accordance with the determination result of the determination device. Item 7. The image recording device according to item 7. 11. When the storage control means determines that the recording state is normal according to the density of the predetermined pattern image detected by the detection means, the storage control means stores at that time in the storage means. The image data of the current page being stored is erased, and when the determination unit determines that the recording state is not normal, the image data of the current page currently stored in the storage unit is saved. Claim 1
The image recording device according to item 0. 12. When the density of the predetermined pattern image is equal to or higher than a reference value, it is determined that the image is normally recorded, and when the density of the predetermined pattern image is lower than the reference value, it is determined that the image is not normally recorded. 7. The method according to claim 7, which is characterized in that
The image recording device according to any one of 1. 13. The image recording apparatus according to claim 7, wherein the recording unit has a recording head that ejects ink in accordance with image data. 14. The image recording apparatus according to claim 13, wherein the recording head ejects an ink droplet from an ejection port by causing a state change in the ink by using thermal energy.