JP2562325B2 - Recording device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus that uses a plurality of recording sheets wound in a roll, for example, a recording apparatus such as a facsimile apparatus or a printer apparatus.

[Prior Art] Conventionally, as a recording apparatus that stores a plurality of recording sheets, for example, there is a so-called double roll type apparatus that stores two sheet rolls.

This device has an advantage that it can store recording sheets of different sizes and can record on recording sheets that match the reception size.

[Problems to be Solved by the Invention] However, since the conventional double roll type recording apparatus conveys the recording sheet to the recording unit according to the received image information, the recording sheet is recorded after one communication is completed. The front end is rewound to the standby position set upstream of the printing position of the recording unit in the sheet conveying direction, and the next communication is prepared.

Therefore, when the recording for one communication is completed, the platen roller forming the recording unit and the recording head are left in direct contact with each other for a long time until the next recording starts. For this reason, the platen roller and the recording head may stick to each other due to changes in temperature and humidity inside the apparatus, and if the platen roller is rotated in this state, the recording head may be damaged or the platen roller may be deformed. there were.

If only one of the two stored sheet rolls is frequently used, the recording sheet is reciprocated from the sheet leading edge standby position to the recording unit each time recording for one communication starts and ends. There is a problem in that the operation is a wasteful operation, and a jam may occur when the leading edge of the recording sheet enters the recording portion.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording method that solves the above-mentioned problems of the related art, prevents damage to a recording unit, and prevents unnecessary movement of a recording sheet during recording.

[Means for Solving Problems] In the present invention, a recording head for recording an image according to image information and a platen are provided on the recording sheet conveyed by the conveying means, and recording for one communication is performed on the recording sheet. After the completion, one of the first and second recording sheets is set between the platen and the recording head.

[Operation] The present invention, when recording on the recording sheet is completed,
Since one of the first and second recording sheets is set between the platen and the recording head, they are not left in direct contact with each other for a long time, and the frequently used recording sheet is on standby. In this state, recording can be started immediately on the recording sheet, and useless operations can be eliminated.

[Embodiment] An embodiment in which the above means is applied to a double roll type facsimile apparatus will be described.

FIG. 1 is a perspective explanatory view showing a state in which a first housing A and a second housing B are opened, FIG. 2 is a sectional explanatory view thereof, and FIG. 3 is a case in which both the housings are closed. FIG.

In the figure, a first housing A, which is the main body of the apparatus, and a second housing B, which is the lid thereof, are pivotally attached by a shaft 1 and can be opened and closed around the shaft 1. Further, a spring 2 is provided on the shaft 1 that serves as the center of rotation, and a hook 3 is provided at the open end of the housings A and B so as to engage with each other. When the engagement of the hook 3 is released, The second housing B is opened from the first housing A by the bias of the spring 2.

The first housing A is provided with two drop-type roll holders 6 and 7 in parallel, which can individually store sheet rolls 4a and 5a of various sizes in which recording sheets 4 and 5 are wound in a roll shape. Has been. One of the recording sheets 4 and 5 stored in the roll holders 6 and 7 is conveyed to the recording unit 8 in response to a selection signal from the control unit, a predetermined image is recorded in the recording unit 8, and the recording sheet after recording is recorded. Is cut from the rear end of the image by a cutter 9 provided in the first housing A, and is discharged to the outside of the apparatus by a pair of discharge rollers 10 also provided in the first housing A.

The recording unit 8 presses the platen roller 8a for conveying the recording sheets 4 and 5 at a constant speed and the platen roller 8a as shown in FIG. 3 to heat the recording sheet made of a heat sensitive sheet according to the image information. And a line type recording head 8b. The platen roller 8a is arranged in the first casing A, the recording head 8b is arranged in the second casing B,
When the two housings A and B are closed, the two are pressed against each other by a pressing spring 8c attached to the back surface of the recording head.

The recording sheets 4 and 5 are conveyed to the recording unit 8 by a pair of feed rollers serving as feed members, but the recording sheets 4 stored in a roll holder (hereinafter referred to as “first holder”) 6 closer to the recording unit A sheet guide 12 is provided between the feed roller pair 11 and the platen roller 8a for conveyance.
A sheet presence / absence detection sensor 13a and a sheet width detection sensor 13b are provided via the. Further, the feed roller pair 14 that conveys the recording sheet 5 stored in the roll holder 7 (hereinafter referred to as “second holder”) 7 that is farther from the recording unit 8 is the second roller.
A sheet presence / absence sensor (for example, a reflection type sensor) provided on the housing B side between the recording head 8b and the second holder 7 and also between the feed roller pair 14 and the recording head 8b via the sheet guide 15. ) 16a and a sheet width detection sensor (for example, a reflection type sensor) 16b are provided.

The feed roller pairs 11 and 14 and the platen roller 8a are configured to be driven and controlled by motors 11a, 11b and 17 driven by signals from the CPU, as shown in FIG.

Reference numeral 18 in FIGS. 2 and 3 denotes a document transport system, which is placed on a document table 18a formed on the upper surface of the second housing B and guided on both sides by document side guides 18b. The originals 19 are separated one by one by a separation roller 18c, are conveyed at a constant speed by the conveying roller 18d to the left side in the drawing, and are discharged to the discharge tray 18f by the discharging roller 18e.

Further, while the document 19 is being conveyed, light is emitted from the light source 20a of the document reading system 20, and the reflected light is reflected by a plurality of mirrors 20b.
The image of the original 19 is read through the image reading element 20d such as CCD through the lens 20c, and the image information is transmitted to a predetermined recording system.

Next, the operation of the apparatus configured as described above will be described.

First, when setting the sheet roll, hook 3
The second housing B is opened, the A4 size sheet roll 4a, which is frequently used, is stored in the first holder 6, and the leading end of the sheet is passed between the feed roller pair 11.
Bring it up near the tip of the sheet guide 12. Similarly, the second holder 7 stores, for example, an A3 size sheet roll 5a which is rarely used, and the leading end of the sheet roll 5a is passed between the feed roller pair 14 to reach the vicinity of the leading end of the sheet guide 15. The frequency of use is specified by the changeover switch 21 shown in FIG. 4 when the sheet rolls 4a and 5a are set.

After setting the sheet roll as above, it is the second
The case B is closed and the manual cutting operation is performed. This operation is performed after first detecting that the sheet rolls 4a and 5a are stored by the sheet presence detection sensors 13a and 16a.

That is, when the recording sheets 4 and 5 are detected by the sensors 13a and 16a when the manual cut switch is operated, first, the feed roller 11 and the platen roller 8a on the recording sheet 4 side are rotated in the arrow direction in FIG. The rear end of the sheet 4 is conveyed to the cutter 9 and the discharge roller pair 10, and the rear end of the recording sheet 4 is cut by the cutter 9. Further, the cut recording sheet 4 is discharged to the outside of the apparatus, and the platen roller 8a and the feed roller pair 11 are rotated in the opposite direction to the above so that the leading end of the recording sheet 4 is located downstream of the sheet presence / absence detection sensor 13a. It is rewound to a position on the upstream side of the recording unit 8 and put in a standby state.

Next, with respect to the recording sheet 5, the feed roller pair 14, the platen roller 8a and the cutter 9 are driven in the same manner as described above to cut the leading edge of the sheet. Further, the cut recording sheet 5 is discharged to the outside of the apparatus, and the platen roller
8a and the feed roller pair 14 are rotated in the opposite direction to the above,
The leading edge of the recording sheet 5 is rewound to a position downstream of the sheet presence / absence detection sensor 16a and upstream of the recording unit 8 and put in a standby state.

After that, the frequently used recording sheet 4 is returned to the recording position.

Recording sheets 4, 5 by the above manual cutting operation
The front end of the recording sheet becomes clean, and by controlling the rotation amounts of the platen roller 8a and the pair of feed rollers 11 and 14, the front end of the recording sheet can reach the accurate standby position. Further, since the frequently used recording sheet 4 is located on the downstream side of the printing position 8d of the recording unit 8, when performing recording on the recording sheet 4, unnecessary movement of the sheet 4 is eliminated. Further, in the standby state, the recording sheet 4 of the platen roller 8a and the recording head 8b is interposed, and since they are not in direct pressure contact with each other, the platen roller 8a and the recording head 8b do not contact each other even if they are left for a long time in the standby state. Does not stick.

Next, when recording, the image information of A4 size that is frequently used (in the copy mode, the information read by the reader provided in the main body, and in the receive mode, the information sent from the sender's facsimile machine) ) Is received, the sheet width detection sensor 13b detects that the width of the recording sheet 4 is A4 size, and each member operates at the timing shown in FIG. 6 (A).

That is, the platen roller 8a rotates in the direction of the arrow in FIG. 3 (hereinafter referred to as "forward direction") to convey the recording sheet 4 at a constant speed. In synchronization with this conveyance, the recording head 8b generates heat in accordance with the image information, and the generated heat records the received image on the recording sheet 4. At this time, the pair of feed rollers 11 rotate along with the conveyance of the recording sheet 4.

When the recording of the received image is completed as described above, the recording sheet 4 is conveyed and cut until the image trailing edge position reaches the cutter 9, and the recorded recording sheet is discharged to the outside of the apparatus by the discharge roller pair 10. , The platen roller 8a and the feed roller pair 11 rotate in the direction opposite to the arrow in FIG. 3 (hereinafter simply referred to as “reverse direction”), and the leading edge of the recording sheet 4 is moved from the printing position as shown in FIG. 5 (A). Rewind the recording sheet by the leading edge margin length l to a position downstream and put it in the standby state.
Stop recording the received size.

Here, the feed roller pair 11 and the platen roller are
The drive of 8a is controlled by the control unit, and the configuration is such that the recording operation signal from the CPU is transmitted to the motor drive circuit as shown in FIG. 4, and the motor 17 is driven via this circuit.
At this time, the number of rotation steps of the motor 17 is calculated by the step pulse calculation circuit, and the rotation amount is controlled by the number of steps. That is, when the motor 17 is rotated in the forward direction, it is detected by counting the number of rotation steps of the motor 17 whether or not the trailing edge of the recorded image is conveyed from the recording unit 8 to the cutter 9 position after the recording is completed. When the sheet is rotated in the reverse direction, it is detected whether or not the leading edge of the sheet is rewound from the position of the cutter 9 to the standby position downstream of the recording unit 8 in the same manner as described above, and the CPU detects the motor 1 according to the signal from the step pulse calculation circuit.
7 drive, stop and speed control.

Next, assuming that the A3 size image information is received while the recording sheet 4 is in the standby state, the sheet width detection sensor 16
It is detected that the recording sheet 5 is A3 size by b, and the recording sheet 4 is detected at the timing shown in FIG. 6 (B).
And recording sheet 5 are replaced, and A3
Record the size.

That is, the platen roller 8a and the feed roller pair
11 is rotated in the reverse direction, and the leading end of the recording sheet 4 is rewound to a predetermined position downstream of the sheet presence detection sensor 13a and upstream of the recording unit 8 as shown in FIG. 5 (B). Put it in a standby state.

Next, the feed roller pair 14 and the platen roller 8a are rotated in the forward direction, and the recording sheet 5 is conveyed to the recording unit 8.
As shown in FIG. 5 (C), the leading edge of the recording sheet 5 is at a printing position 8d where the platen roller 8a and the recording head 8b are in pressure contact with each other.
When it is conveyed downstream by a margin length l, the drive of the feed roller pair 14 is stopped, and the recording sheet 5 is conveyed at a constant speed by the platen roller 8a. At this time, the feed roller pair 14 revolves as the recording sheet 5 is conveyed.

Then, the recording head 8b is driven to record the received image on the recording sheet 5 in synchronism with the above-mentioned constant-speed conveyance, and when the recording is completed, the image trailing edge position reaches the cutter 9 as in the case of the recording sheet 4. The recording sheet 5 is conveyed and cut, and the leading end of the recording sheet 5 is rewound to a predetermined standby position as shown in FIG. 5 (B). Further, the platen roller 8a and the feed roller pair
11 is rotated in the forward direction, and the leading end of the recording sheet 4 is conveyed downstream of the recording unit 8 by the margin length l as shown in FIG.

When the leading edge of the recording sheet 4 which is frequently used is made to stand by at the downstream side of the recording unit 8 after the recording as described above, recording can be started immediately when an A4 size image is received.

[Other Embodiments] In the above-described embodiments, the recording of the A3 size has been described in the case where there is only one received image, but when recording a plurality of A3 size received images continuously, Each time recording is completed, the trailing edge image of the recording sheet 5 is conveyed to the cutter 9 position for cutting, and the platen roller is used for rewinding.
8a and the feed roller pair 14 rotate in the opposite direction to rewind the leading end of the recording sheet 5 by a margin length l to a position downstream of the printing position 8d of the recording unit 8 as shown in FIG. 5 (C).
Then, the drive of the feed roller pair 14 is stopped, and the platen roller 8a is rotated in the forward direction to start recording of the next page. Repeating this, when the recording of the last page is completed,
As in the case where one received image is recorded as in the above-described embodiment, if the state shown in FIG. 5A is set and the printer waits for the next recording, the conveyance of the recording sheet 5 is not wasted. .

In the above-described embodiment, the first holder 6 is an A4 size sheet roll 4a, and the second holder 7 is an A3 size sheet roll 4a.
5a are stored respectively, but which size of sheet roll is stored in which holder is free, in which case the recording sheet that is frequently used, that is, the printing position of the recording portion 8d
Selection of the recording sheet to be made to wait on the downstream side than that may be specified by the changeover switch 21 as shown in FIG.

Further, it is not necessary to limit the number of sheet rolls accommodated in the apparatus to two as in the above-mentioned embodiment, and even if the number of sheet rolls is three or more, similarly frequently used recording sheets may be waited on the downstream side of the recording unit. It is possible to make

Further, the recording unit 8 does not have to be configured by the recording head and the platen roller as described above, but may be configured by an ink jet method, for example.

 FIG. 7 is a diagram showing the control configuration of the drive system.

The control configuration of this drive system is CPU50, NCU51, modem 52,
The data controller 53, the modem controller 54, the ROM 55, the RAM 56, the operation controller 61, the I / O 62, the drive controller 63, the driver 64, and the recording controller 65 are included. Further, a changeover switch 21, recording sheet presence / absence detection sensors 13a, 16a, cover switch 70, recording sheet width detection sensors 13b, 16b, recording motor 17, feed motor
It has 11b, 11b and a recording head 8b.

FIG. 8 is a flow chart showing the operation of another embodiment of the present invention.

First, the leading edge of a recording sheet having a predetermined width is set at the recording position (S1), and the width (L) of the recording sheet set at the recording position is set in the memory (S2). Then, wait until there is a recording start request (S3), and if there is a recording start request,
Recording sheet width information (L1) is detected based on DCS (S
Four).

If the width L of the recording sheet set at the recording position is equal to the recording sheet width information L1 (S5), recording is immediately performed (S7).

On the other hand, if the width L of the recording sheet set at the recording position and the recording sheet width L1 to be recorded are different (S5), the already set recording sheet is returned to the standby position, and the recording sheet having the width L1 is changed. The tip is set to the recording position (S6) and recording is started (S7).

Then, when there is no recording start request (S3), that is, when the recording for one communication is completed, the leading edge of the recorded recording sheet is held at the recording position (S8), and the recording sheet set at the recording position is set. The width (new L) is set in the memory (S9). Then, it waits until there is a recording start request.

FIG. 9 is a flow chart showing the operation of still another embodiment of the present invention.

The difference between the flowchart shown in FIG. 9 and the flowchart shown in FIG. 8 is that S1 is used instead of S8 in FIG.
8 and S19 are provided.

That is, when there is no request to start recording (S17),
That is, when the recording for one communication is completed, it is determined whether the width of the recording sheet used at the time of recording and the width of the recording sheet selected in advance are the same (S18).
Then, if the widths of the two recording sheets are different, the recording sheet used in the above recording is rotated in the reverse direction and returned to the standby position, the preselected recording sheet is advanced to the downstream side, and its leading end is set to the recording position. Yes (S19). The width of the recording sheet newly set at the recording position is set in the memory (S2
0). If the width of the recording sheet on which recording has been performed is the same as the width of the recording sheet selected in advance (S18), the recording sheet used at the time of recording is kept set at the recording position (S20).

In addition, S11 to S17 in FIG. 9 are S1 in FIG.
~ S7 is the same, S9 is the same as S20.

Note that the recording sheet includes, for example, a plastic sheet and plain paper in addition to the thermal paper. Further, the present invention is not limited to the heat-sensitive recording method shown in the embodiment, but can be applied to a recording apparatus using a so-called thermal transfer recording method using an ink sheet, for example. Further, the platen is not limited to the roller and may be, for example, a plate-shaped one. In this case, another sheet may be conveyed by another roller or the like.

[Effect of the Invention] According to the present invention, even when the platen and the recording head are pressure-contacted to form the recording unit, the recording sheet is always interposed between the two, and the platen roller and the recording head are directly pressure-contacted. Since it is not left for a long time, it is possible to prevent damage and wear of the recording head, and since it is not necessary to cue the recording paper at the start of the next communication, the waiting time until the end of recording is shortened. In addition, the effect that the probability of occurrence of jam is reduced is achieved.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing a state where the first housing A and the second housing B are opened. FIG. 2 is an explanatory view of the cross section. FIG. 3 is a cross-sectional explanatory diagram when both housings are closed. FIG. 4 is a flow chart showing the operation of the above embodiment. 5 (A), (B), and (C) are explanatory views of the conveyance state of the recording sheet. FIGS. 6A and 6B are timing charts of the operating states of the respective members during recording. FIG. 7 is a block diagram showing the control configuration of the drive system. FIG. 8 is a flow chart showing the operation of another embodiment of the present invention. FIG. 9 is a flowchart showing the operation of still another embodiment of the present invention. 4, 5 ... Recording sheet, 8 ... Recording unit, 8a ... Platen roller, 8b ... Recording head, 11 ... Feed roller pair, 13a, 16a ... Sheet presence / absence detection sensor, 13b, 16b ... Sheet width Detection sensor, 14 …… Feed roller pair,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Okubo 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-59-40759 (JP, A) JP-A-56 -170338 (JP, A) JP-A-54-134317 (JP, A) JP-A-60-46165 (JP, A) JP-A-59-216370 (JP, A) JP-A-60-206263 (JP, A) ) JP-A-55-84757 (JP, A) Actually opened 61-118746 (JP, U) Actually opened 59-195134 (JP, U) Actually opened 58-81669 (JP, U)

Claims (4)

(57) [Claims] 1. A roll-shaped first and second recording sheet is accommodated, and the first and second recording sheets are selectively conveyed to a recording portion provided with a recording head, and the selected recording sheet is ,
A recording apparatus for recording an image according to image information, wherein when the recording for one communication is completed on a predetermined recording sheet of the first and second recording sheets, the platen and the recording head In the meantime, when the predetermined recording sheet is set, and when the recording for one communication is completed on the recording sheet which is not the predetermined recording sheet, the leading end of the recording sheet which is not the predetermined recording sheet is set to the recording sheet. A recording apparatus comprising a control means for returning the recording sheet to a predetermined position on the upstream side of the head and setting the predetermined recording sheet between the platen and the recording head. 2. The recording apparatus according to claim 1, wherein the predetermined recording sheet is a recording sheet that is frequently used. 3. A recording apparatus according to claim 1, wherein a user can arbitrarily select the predetermined recording sheet from the first and second recording sheets. 4. A roll-shaped first and second recording sheet is accommodated, and the first and second recording sheets are selectively conveyed to a recording portion provided with a recording head, and the selected recording sheet is transferred. ,
A recording apparatus for recording an image according to image information, wherein when recording for one communication is completed by the recording head, the recording sheet on which recording has been performed among the first and second recording sheets is When the recording medium is set between the platen and the recording head, and the next recording is performed on a recording sheet other than the recording sheet set between the platen and the recording head, the platen and the recording head Return the leading edge of the recording sheet set between and to a predetermined position on the upstream side of the recording head,
A recording apparatus having a control means for setting a recording sheet to be recorded between the platen and the recording head.