JPH0220953A - recording device - Google Patents

Abstract

PURPOSE:To prevent abnormal recording by understanding the position of the tip of each recording sheet in accordance with an output of a recording sheet existence detecting sensor, cutting alternately the tips of each recording sheet and initializing the recording sheet position. CONSTITUTION:The title recorder is provided with recording sheet existence sensors 9a, 9b for detecting whether first and second recording sheets 4a, 4b exist or not, and an initializing means for understanding the position of the tip of each recording sheet 4a, 4b, cutting alternately the tips of each recording sheet 4a, 4b and initializing the recording sheet position, in accordance with outputs of the recording sheet existence detecting sensors 9a, 9b. Accordingly, when the recorder causes an abnormal stop and another recording sheet has been selected at the time of re-recording after its return, it is recorded surely in the recording sheet to be recorded, and also, the jamming of the recording sheet can be surely prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device that uses a plurality of recording sheets wound into a roll, such as a recording device for a facsimile machine or a printer device.

[Prior Art] A conventional recording device such as a facsimile machine or a printer device, as shown in FIG.
It is common to have only wood.

Then, at the same time as the platen roller l transports the recording sheet 4, the recording head 3 records an image on the recording sheet 4,
After this recording is completed, rotate the platen roller l,
The rear end of the recording sheet 4 is sent to the cutting position of the cutter 2. Then, the cutter 2 cuts the trailing edge of the image recorded on the recording sheet 4, and the platen roller 1 is rotated in the reverse direction to cut the trailing edge of the image recorded on the recording sheet 4.
is rewound, and when the leading edge of the recording sheet 4 reaches the standby position, the rotation of the platen roller I is stopped.

After the recording operation stops abnormally due to power cut, etc. during the above recording, when the power is restored and the power is turned on to perform the next recording, the position of the recording sheet 4 is the position at the time of the abnormal stop, and from this position. Recording begins.

[Problems to be Solved by the Invention] In an apparatus that is equipped with a plurality of roll-shaped recording sheets and selects one of them for recording, it may stop abnormally and then select another recording sheet when re-recording after recovery. In this case, there is a problem that not only the information is not recorded on the recording sheet to be recorded, but also the recording sheet may jam in the apparatus.

In addition, in a recording device equipped with multiple recording sheets, if the device is moved with the power turned off and then turned on again to perform recording, the leading edge of the recording sheets inside the device may shift while the device is being moved. Similarly to the above, there is a problem in that an abnormal record may be recorded if the data is stored away. Further, when the cover of the recording sheet is opened and then closed, the same problem as above occurs.

[Means for Solving the Problems] The present invention stores a plurality of first and second recording sheets wound into a roll, and stores the first and second recording sheets in a recording section provided with a recording head. Second
A recording apparatus that selectively conveys a recording sheet and records an image according to image information on the selected recording sheet, the recording sheet presence detection sensor detecting the presence or absence of the first and second recording sheets; , an initializing means for grasping the position of the leading edge of each recording sheet in accordance with the output of the recording sheet presence/absence detection sensor, and initializing the position of the recording sheet by alternately cutting the leading edge of each recording sheet. It is something.

[Function] The present invention stores a plurality of first and second recording sheets wound into a roll, and stores the first and second recording sheets in a recording section provided with a recording head.
A recording apparatus that selectively conveys a recording sheet and records an image according to image information on the selected recording sheet, the recording sheet presence detection sensor detecting the presence or absence of the first and second recording sheets; , an initializing means for grasping the position of the leading edge of each recording sheet in accordance with the output of the recording sheet presence/absence detection sensor, and initializing the position of the recording sheet by alternately cutting the leading edge of each recording sheet. Therefore, when a different recording sheet is selected during re-recording after an abnormal stop and recovery, recording is reliably performed on the recording sheet to be recorded, and jamming of the recording sheet can be reliably prevented.

[Embodiment] FIG. 1 is a block diagram showing an embodiment in which the present invention is applied to a facsimile machine.

This embodiment includes a CPU 50 that controls the entire device, and an NC
It has a U (network control device) 51, a modem 52, a data control section 53, a modem control section 54, a ROM 55 that stores the programs shown in FIGS. 7 to 11, and registers described below. It has a RAM 56 which is also used for general purposes. Further, in the above embodiment, the operation control unit 61 and the l106
2, a drive control section 63, a driver 64, a recording control section 65, a manual cut button 17 for the operator to initialize the leading edge position of the recording sheet, and a display section 18. Further, a recording sheet width detection sensor 13b detects the width of the recording sheets 4a and 4b.

16b, a cover switch 70 for detecting opening/closing of a main body cover (not shown), and a recording head 3.

The CPU 50 is an initializing unit that initializes the leading edge position of the recording sheet when recording is started and a power off state, a cover open state, or a recording stop state in the middle of recording is stored in a register. It is also an example of erasing means for erasing the stored contents of each state from the register after initializing the leading edge position of the recording sheet.

The RAM 56 includes a register that stores a power off state, a cover open state, or a recording stop state in the middle of recording.

The operation control section 61 displays the 1 display section 18 and receives a manual cut instruction from the manual cut button 17. l1062 is a recording sheet presence/absence detection sensor (
For example, it receives signals from reflective sensors) 9a, 9b and recording sheet width detection sensors 13b, 16b. The driver 64 includes a recording motor 6 and feed motors 8a and 8b.
and.

It drives the cutter motor 7.

The cover switch 70 is a switch that detects opening and closing of the cover, and the cover is opened and closed when replacing the recording sheet 4.5. This cover may be provided with a transport roller or may be provided with a document transport table.

FIG. 2 is a diagram showing the internal structure of the recording-related portion in the above embodiment.

In FIG. 2, depending on the selection signal from the CPU 50,
Either one of the recording sheets 4a and 4b is conveyed to a recording section, a predetermined image is recorded in this recording section, and the recording sheet after this recording is ejected from the apparatus from the trailing edge of the image by the cutter 2. Ru.

Here, the recording section has a platen roller l that conveys the recording sheets 4a and 4b at a constant speed, and is in pressure contact with this roller l,
Heats a recording sheet made of a thermosensitive sheet according to image information (in copy mode, this is information read by a reader installed in the main unit, and in reception mode, information sent from the sender's facsimile device) It is composed of a line-type recording head 3. Further, the feed roller pair 5a is for conveying the recording sheet 4a to the recording section, and the feed roller pair 5b is for conveying the recording sheet 4b to the recording section. platen roller l, cutter 2)
The feed roller pairs 5a, 5b are independently driven by drive motors 6.7.8a, 8b, respectively.

Further, a near-end mark is attached near the rear end of the recording sheet 4a, 4b (in a range of about 1a from the rear end, for example), and the recording sheet presence/absence detection sensors 9a, 9b detect the near-end mark and record the sheet. Detects the presence or absence of a sheet.

Next, a normal recording operation in the above embodiment will be explained.

First, image information received from the transmitting side passes through the NCU 31, is demodulated by the modem 52, becomes a digital signal, and is sent to the data control section 53.

The CPU 50 selects either recording sheet 4a or 4b according to the above data. In addition, record sea) 4a
The following explanation will be given assuming that the width of the recording sheet 4b is set to A4 and the width of the recording sheet 4b is set to B4.

For example, if A4 size image information is received, the CPU
50 drives the motor 8a, thereby causing the pair of feed rollers 5a to rotate in the forward direction (rotating in the direction indicated by the arrow in FIG. 2), conveying the recording sheet 4a to the recording section, and at the same time, the recording motor 6 is rotated. Rotate the platen roller l to the second
Rotate in the direction shown by the arrow in the figure.

When the leading edge of the recording sheet 4a is conveyed to the recording section as described above, the feed motor 8a is turned off, and the recording sheet 4a is conveyed at a constant speed by the platen roller l, and generates heat according to the image information. The received image information is recorded on the recording disk 4a by the recording disk 3. In this case, the feed roller pair 5a rotates as the recording sheet 4a is conveyed.

Note that the CPU 50 controls the feed motors 8a and 8b via the drive control unit 63 and the driver 64, and the rotation of the feed roller pair 5a and the platen roller l is controlled.

Further, the data control unit 53 controls the RAM 5 via the data bus.
6, the CPU 50 decodes the data in the RAM 56, and stores the decoded data in the RAM 56 again. When data for one line is stored in the RAM 56 in this way, the data is sent to the RAD 3 for recording via the recording control unit 65, and recording for one life is completed.The recording for one line is completed. Then, the CPU 50 drives the recording motor 6, the platen roller l rotates, and the recording sheet 4a71t1 is conveyed.

By repeating the above operations, recording for one page is completed.

When the recording of the received image information is completed, the platen roller
When the recording sheet) 4a is conveyed and the trailing edge position of one image reaches the cutter 2, the cutter motor 7 is driven, the cutter 2 cuts the recording sheet) 4a, and discharges the recorded recording sheet out of the apparatus. , the platen roller 1 and the feed roller pair 5a rotate in the direction opposite to the arrow shown in FIG. 2, and wind the leading edge of the recording sheet 4a to the standby position (position '11, just before the recording section) B shown in FIG. Then, the recording of the A4 size received image is completed.

In addition, during recording, it is important to check whether the leading edge of the recording sheet 4a has been conveyed to the recording section, whether the trailing edge of the image has been conveyed to the cutter position, and whether the leading edge of the recording sheet 4a is at the standby position gl.
Whether or not the film has been rewound to B is detected by counting the number of rotational steps of the feed motor 8a that rotates the pair of feed rollers 5a and the number of rotational steps of the recording motor 6 that rotates the platen roller 1. When the recording sheet 4a is conveyed to each of the above predetermined positions, the motor 6
．． CPU 50 generates a signal to operate 8a.

In addition, when the above-mentioned received image is B4 size, the feed roller pair 5b, the recording section and the cutter 2 operate in the same manner as above,
Recording sheet) Perform B4 size recording on 4b.

Next, the operation of detecting the leading edge position of the recording sheet will be explained.

FIG. 2 shows that two recording sheets 4a and 4b are loaded, both of which are ready for use, and the leading edges of the recording sheets 4a and 4b are in the standby position B. However, when the recoverer is opened and closed, and an abnormal stop occurs during operation, there are several possible positions of each recording sheet, and the leading edge of the recording sheet is downstream of recording position A, and the recording section is in the wrong position. Whether the recording sheet is located between iA and the standby position fiB, and the recording sheet presence/absence detection sensors 9a and 9b
The cases are divided depending on whether or not the near-end mark is detected. Here, the recording sheet presence/absence detection sensor 9a
, 9b outputs "white" when "recording sheet is present",
If "no recording sheet" or a near-end mark is detected, "black" is output.

When the power is turned on during normal operation, the leading ends of the re-recording sheets 4a and 4b are at the standby position 2ZH, as shown in FIG. However, if the power is turned on after an abnormal stop due to a power cut during the recording operation, each recording screen) 4a
, 4b's tip position is not determined.

FIG. 7 is a flow chart showing the operation of one embodiment of the present invention.

First, it detects whether the power is on or off (312). If the power is on, it detects whether the cover of the recording device is open (312), and if the cover is closed, the recording operation is interrupted. It is determined whether or not it is stopped (S13).

In the above case, if the power is off, record the fact that the power is off in a register in the RAM 56 (S L 4). For example, if the above register is set to 3 bits and the power is off, contains the contents of the above register R
=001. Even if the cover of the recording device is opened or the operation stops during recording, the information is recorded in the register. For example, if the cover of the recording device is open, the content of the register R = 010, and if the operation stops during recording, the content of the register R = 100.
shall be. Of course, the number of bits in the register may be set to a value other than three.

If the power is on, the cover is closed, and the operation does not stop during recording, and there is no manual cut command (manual command to initialize the beginning position of the recording sheet), a recording request is issued (S t S). Please judge the presence or absence of S l
6) If there is no recording request, return to Sll. If there is a recording request, it is determined whether the contents R of the register above are all 0 (317), and if R = all 0 (if there is no abnormal stop), it is recorded on the selected recording sheet. The operation is performed (S18).

On the other hand, if there is a manual cut command (S15), the initialization described in FIG. Later, if the contents R of the above register are not all 0 (S17)
That is, if an abnormal stop has occurred in the past, the recording sheet position is initialized (S22), and the contents R of the register are reset to all 0s (523).

Note that the cutting of the recording sheet when initializing the leading edge position of the recording sheet may be performed one by one of the rolled recording sheets, or a plurality of the recording sheets may be cut at the same time.

Next, the operation of initializing the recording sheet position 320 and S22 will be explained.

8, FIG. 9, FIG. 1O, and FIG. 11 are flowcharts showing the operation of initializing the position of the recording sheet in the above embodiment.

First, when the output of the recording sheet presence/absence detection sensor 9a is white (531) and the output of the recording sheet presence/absence detection sensor 9b is also white (S32), as shown in FIGS. 2, 3, and 4. The condition may be considered. Fig. 2 shows the case where the recording operation is stopped in a standby state, Fig. 3 shows the case when the printing operation is stopped while recording the recording sheet 4b, and Fig. 4 shows the case when the recording sheet 4b is stopped while recording.
This is the case when the recording is stopped during recording.

In these cases, first the feed roller 5a.

5b, reversely rotate the platen roller l (541) and rewind both the recording sheets 4a and 4b, and during this time, check whether the output of the recording sheet presence/absence detection sensor 9a becomes black (342);
Alternatively, the rewinding process is continued until the output of the recording sheet presence/absence detection sensor 9b becomes black (S43).

If the recording sheet presence/absence detection sensor 9a first detects that it is outputting black, at least the recording sheet) 4a
is not on the platen roller 1, and the second
It is thought that the situation was as shown in Figure 3 or Figure 3. Therefore, the recording sheets other than those not placed on the platen roller 1 are initialized first, that is, the recording sheet 4b is initialized first.

That is, the rotation of all the rollers is stopped (551), the recording sheet 4b is fed out by the length from the recording sheet presence/absence detection sensor 9b to the cutter 2, the recording sheet 4b is cut by that distance t, and the recording sheet 1-4b is moved to the standby position. Rewind to B (S53
), then initialize the recording sheet) 4a, that is,
The recording sheet 4a is sent out by the length from the recording sheet presence detection sensor 9a to the cutter 2, the recording sheet 4a is cut, and then rewound to the standby position B (S54).

As described above, the recording sheet position is initialized for the recording sheet opposite to the recording sheet corresponding to the sensor that detected black first, and then the remaining recording sheet positions are initialized. In this way, the recording sheet can be reliably initialized and unnecessary operations can be reduced.

FIG. 9 is a flowchart showing the operation when the recording sheet presence/absence detection sensor 9b outputs black first in FIG.

This operation is the same as that in 351 to 358 shown in FIG. 8, in which recording sheet 4a is replaced with 4b, 4b is replaced with 4a, sensor 9a is replaced with 9b, and 9b is replaced with 9a. In this case, at least the recording sheet 4b is not placed on the platen roller l, and as shown in FIG.
It is thought that the situation was as shown in the figure. Therefore, the initialization of the recording sheet leading edge position is started from the recording sheet 4a first. That is, operations 561 to 68 in FIG. 9 are executed.

FIG. 1O shows that the recording sheet presence/absence detection sensors 9a and 9b are
7 is a flowchart showing initialization operations when black and white are detected, respectively.

As this state, there are five possible states shown in FIG. 5 (1) to (5). Figure (1) shows a case where an abnormal stop occurs in the standby state when a near-end mark appears on recording sheet) 4a, and Figure (2) shows a case where a near-end mark appears while recording sheet) 4a is in use. (3) in the same figure shows a case where a near-end mark appears on the recording sheet (4a) and the recording sheet (4b) is in a standby state, and the abnormal stop occurs while the recording sheet (4b) is in use, (4) in the same figure. This is the case where only the recording sheet (4b) is set and an abnormal stop occurs in the standby state.
5) shows a case where only the recording sheet 4b is set and an abnormal stop occurs during its use.

First, only the feed roller pair 5b is reversely rotated (S44
), the recording sheet 4b is rewound by the rewinding amount AC (the length from the recording position glA to the retracted position 2IC) until the output of the recording sheet presence/absence detection sensor 9b becomes black (S45, 3
46) If the recording sheet presence/absence detection sensor 9b detects black before the rewinding amount AC is completed (346), the feed roller pair 5b is stopped (S81).

In this case, at least the recording sheet 4b is not covered by the platen roller l, so as shown in FIG. 5(1),
It is thought that the situation was either (2) or (4). Therefore, the initialization of the recording sheet leading edge position is performed for both recording sheets 4a and 4b.In other words, returning to S63 in FIG. 9, the recording sheet 4b is initialized after initializing the recording sheet 4a. Here, even if the recording sheet 4a is not set as shown in FIG. 5(4), the cutting operation is formally performed.

On the other hand, if the output of the recording sheet presence detection sensor 9b is white even after rewinding by the reversing amount AC (S45), the feed roller pair 5b is stopped (S71).In this case, the recording sheet) 4b is the platen roller. 1,
It is thought that the situation was as shown in Fig. 5 (3) and (5). Therefore, the initialization of the recording sheet leading edge position is
4b only, that is, S64 shown in FIG.
Return to

FIG. 11 shows that the recording sheet presence/absence detection sensors 9a and 9b are
12 is a flowchart showing initialization when outputting white and black, respectively.

As the above case, there are five possible cases shown in FIG. 6 (1) to (5). Fig. 6 (1) shows a case where an abnormal stop occurs in the standby state after a near-end mark appears on the recording sheet 4b, and Fig. 6 (2) shows a case where a near-end mark appears while the recording sheet 4b is in use. This is a case of abnormal stoppage, as shown in the same figure (3).
) is a case where there is an abnormal stop on mf11 using recording sheet 4at after a near-end mark appears on recording sheet 4b,
(4) in the same figure shows the case where the abnormal stop occurs in the standby state with only the recording sheet 4a set, and (5) in the same figure shows the case where the abnormal stop occurs while only the recording sheet 4a is set and the recording sheet 4a is in use. This shows the case where

First, only the feed roller pair 5a is reversely rotated (S47
), the feed roller pair 5a is rotated in reverse until the return amount becomes AC (547), and if the output of the recording sheet presence/absence detection sensor 9a becomes black (S49), the feed roller pair 5a is stopped (S1
01), in this case, at least the recording sheet 4a is not placed on the platen roller 1, and as shown in FIG.
), (2), or (4). Therefore, the leading edge positions of the recording sheets are initialized for both recording sheets 4b and 4a, that is, the 8th
Returning to 353 shown in the figure, after initializing the recording sheet 4b, the recording sheet 4a is initialized.

On the other hand, if the output of the recording sheet presence/absence detection sensor 9a is white while rewinding the reversing amount AC (548), the feed roller pair 5a is stopped (S91). In this case, the recording sheet 4a is placed on the platen roller l. It is believed that the situation was as shown in Figure 6 (3) and (5). Therefore, the recording sheet leading edge position is initialized only for the recording sheet 4a, that is, the process returns to S54 shown in FIG. 8.

On the other hand, in the above initialization, the recording sheet presence/absence detection sensor 9
If the outputs of a and 9b are both black (S33), both recording sheets 4a and 4b cannot be used, and the process returns without initializing the recording sheet leading edge position.

In addition to recording paper, the recording sheet includes, for example, a plastic sheet and plain paper.

Further, the present invention is not limited to the thermal recording method described in the present invention, but can also be applied to a recording apparatus using a so-called thermal transfer recording method using an ink sheet, for example.

[Effects of the Invention] According to the present invention, in the case of a recording device that stores a plurality of rolled recording sheets, the system stops when the power is turned off, etc., and then selects another recording sheet when re-recording after returning. In some cases, it has the effect of reliably recording on the recording sheet to be recorded and also reliably preventing jamming of the recording sheet.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a diagram showing a state in which two recording sheets are both set at the standby position 2tH in the above embodiment. 3 and 4 show recording sheet presence/absence detection sensors 9a and 9.
FIG. 4B is a diagram showing a state in which both of the colors B and B are detecting white. FIGS. 5(1) to 5(5) are diagrams showing a state in which the recording sheet presence/absence detection sensor 9a detects black and the recording sheet presence/absence detection sensor 9b detects white in the above embodiment. FIGS. 6(1) to 6(5) are diagrams showing a state in which the recording sheet presence/absence detection sensor 9a detects white and the recording sheet presence/absence detection sensor 9b detects black in the above embodiment. FIG. 7, FIG. 8, FIG. 9, FIG. 10, and FIG. 11 are flowcharts showing the operation of the above embodiment. FIG. 12 is an explanatory diagram of a conventional device. 1...Platen roller, 2...Cutter, 3...Recording head, 4a, 4b...Recording sheet, 5a, 5b...Feed roller pair, 9a, 9b...Recording sheet Presence detection sensor, 50...
・CPU, 55...ROM, 56...RAM. Patent applicant Canon Co., Ltd. Agent Arata Yokubo G Figure 5 Figure 7 Figure 8 Figure 6 Figure 9 Figure 1 0 Figure 1 1

Claims (4)

[Claims] (1) A plurality of first and second recording sheets wound into rolls are stored, and the first and second recording sheets are stored in a recording section equipped with a recording head.
A recording apparatus that selectively conveys a recording sheet and records an image according to image information on the selected recording sheet, the recording sheet presence detection sensor detecting the presence or absence of the first and second recording sheets; an initializing means that grasps the position of the leading edge of each recording sheet according to the output of the recording sheet presence/absence detection sensor, and initializes the position of the recording sheet by alternately cutting the leading edge of each recording sheet; A recording device comprising: (2) In claim 1, the initializing means simultaneously rewinds the first and second recording sheets and first cuts a recording sheet other than the recording sheet on which black was detected earlier. A recording device characterized in that the recording device starts with. (3) In claim 1, the initializing means is configured to operate on the side of the recording sheet presence/absence detection sensor that is different from the recording sheet presence/absence detection sensor that detects black before rewinding the recording sheet. A recording apparatus characterized in that the recording sheet on the feed roller side is set when the recording sheet presence/absence detection sensor on the feed roller side detects white after only the feed roller is rotated in reverse for a predetermined period of time. . (4) In claim 1, the initializing means is configured to operate on the side of the recording sheet presence/absence detection sensor that is different from the recording sheet presence/absence detection sensor that detects black before rewinding the recording sheet. After only the feed roller is reversed for a predetermined period of time, when the recording sheet presence detection sensor on the feed roller side detects black, the recording sheet on the side opposite to the feed roller side is cut, and then the remaining recording sheet is cut. A recording device for setting sheets.