JPH04173649A - Recorder - Google Patents

Abstract

PURPOSE:To display the rest of a recording sheet by integrating the rotation of a drive motor which drives a carrying means for rotating direction and providing a control means to issue a signal when a integrated value is over a preset value in comparing the integrated value which is integrated with the preset value which is preset and a display means actuated by the control means. CONSTITUTION:A balance between the length of a new recording sheet and the length of the rest to add special attention to is preset so that a control means 51 can compare a preset value with a integrated value. As a result, when the integrated value is over the preset value, a signal is issued and a display means 7 is actuated in accordance with such a signal to display the rest of the recording sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a recording apparatus using a roll-shaped recording medium.

<Prior Art> A facsimile machine and the like are examples of recording devices that use recording paper formed into a roll by winding up a recording medium such as a heat-sensitive sheet or plain paper (hereinafter referred to as "r recording paper"). These recording devices do not have anything that can display the exact amount of recording paper remaining on the outside, and are configured so that the remaining amount of recording paper loaded inside can be visually confirmed through a window formed in the device body. It is common that

<Problem that the invention sought to solve> In the case of facsimile machines, most of the recording operations are performed by remote signals sent from the other party through a telephone line, so the recording paper may run out without the recipient's knowledge. In the worst case, the recording paper may be used to the end, making reception impossible.

For this reason, many facsimile machines are equipped with a means to detect that the current amount of recording paper remaining is one page or less of standard size, and if this is detected during reception, the current After the page has been received, the device is configured to notify the sending device that it cannot receive any more pages.

Furthermore, when modern facsimile machines detect that there is no more recording paper remaining and recording is no longer possible, they temporarily store the received information in an auxiliary storage device such as a semiconductor memory or hard disk. Some are configured to wait until recording on paper is possible.

However, the function of the facsimile machine as described above can also be seen as a self-defense measure since it is not possible to accurately know the remaining amount of recording paper, and by displaying the exact amount of recording paper remaining,
It goes without saying that it is preferable that the recording paper can be replaced as needed.

An object of the present invention is to provide a recording device that can display the remaining amount of recording paper.

<Means for Solving the Problems> A typical means according to this embodiment for solving the above problems includes a recording medium wound into a roll and a recording means for forming an image on the recording medium. and a conveying means for conveying the recording medium in the recording direction and the winding direction,
The amount of rotation of the drive motor that drives the conveying means is integrated according to the rotation direction, and the integrated value is compared with a preset value, and when the integrated value exceeds the set value, a signal is generated. and a display means that operates in response to a signal from the control means.

<Operation> According to the above-mentioned means, the roll-shaped recording paper can be transported in the ejection direction and the winding direction, which is the opposite direction, by rotating the transporting means in the normal and reverse directions. At this time, by adding a positive or negative sign depending on the rotation direction of the drive motor that drives the conveyance means and integrating the amount of rotation of the motor, it is possible to know the length of the recording paper consumed from this integrated value. I can do it.

Further, the recording paper wound into a roll has a substantially constant length when it is new. Therefore, a length is set in advance by subtracting the length of the remaining amount that should call attention from the length of new recording paper, and the control means compares the set value and the integrated value, and the integrated value is determined. By generating a signal when the set value is exceeded and operating the display means in response to this signal, the remaining amount of recording paper can be displayed.

<Embodiment> An embodiment of a recording apparatus to which the above means is applied will be described below with reference to the drawings.

Figure 1 is a schematic cross-sectional view of the recording device, Figure 2 is a block diagram of the control system of the recording device, Figures 3 (a) and (b) are diagrams of the recording paper, and Figure 4 is an explanation of the drive system. 5 is an explanatory diagram of an excitation table when driving a two-phase stepping motor 1-2, and FIGS. Figures 7 (a) and (b) are explanatory diagrams of the sensor, Figure 8 is an explanatory diagram of the remaining amount display section, and Figure 9 is the judgment standard value S.
FIG. 10 is a flowchart of the operation for operating the remaining amount display section by comparing j and the integrated value Sc, FIG. 10 is an explanatory diagram of lighting of the remaining amount display section, and FIG. 11 is a flowchart of the operation procedure associated with opening the lid.

A recording apparatus A shown in FIG. 1 is suitably applied to a facsimile machine, in which recording paper 1 wound into a roll is loaded into a roll holder 2, and a platen roller 3 constituting a conveyance means is moved Recording paper 1 is rotated in direction a.
A predetermined recording is carried out on the recording paper 1 by transporting the recording paper 1 and driving a recording head 4, which is a recording means that presses against the platen roller 3 in synchronization with this transportation, in accordance with an image signal. Then, transfer the recorded recording paper l to the platen roller 3.
further conveyed in the direction of arrow a, cut by a cutter 5 at the rear end position of the image, and discharged the cut recording paper l to the outside of the recording apparatus A by a pair of discharge rollers 6.
The unused recording paper l cut by the cutter 5 is pulled back to a standby position for the next recording by rotation of the platen roller 3 in the direction of the arrow.

In the recording apparatus A, the platen roller 3 is driven in the directions of arrows a and b by a drive motor 14, which will be described later. Then, the rotation direction of the drive motor 14 that rotates the platen roller 3 in the direction of the arrow a is defined as a positive direction, and the rotation direction that rotates the platen roller 3 in the direction of the arrow mark is defined as a negative direction, and the amount of rotation of the drive motor 14 corresponding to each direction is integrated. By this,
In addition to calculating the consumed length of the recording paper 1, the cumulative value Sc is compared with the judgment reference value Sj, which is a preset value for displaying the remaining amount of the recording paper 1, and the cumulative value Sc is determined as the judgment standard. When the value Sj is exceeded, the remaining amount display section 7 serving as a display means is activated to display a predetermined display.

The recording apparatus A has a main body 8 and a lid 9 rotatably attached to the main body 8, and the main body 8 has a roll holder 2. Platen roller 3. Cutter 5
．． Six pairs of discharge rollers are provided, a recording pad 4 is provided on the back surface of the lid 9, and a remaining amount display section 7 is provided on the outer surface of the lid 9.
An operating section 10 is provided, which includes a numeric keypad for inputting information, a display section for displaying communication information, and the like.

Further, a sensor 11 is provided at a predetermined position on the device body 8 or the lid 9 to detect whether the lid 9 is open or closed. When the sensor 11 detects that the lid 9 has been opened, the integrated value Sc is determined to be indefinite, and the integrated value Sc is compared with a judgment reference value Sj to determine whether the integrated value Sc is If it exceeds the reference value Sj, it is determined that the lid 9 was opened for the purpose of replacing the recording paper 1, and if the integrated value Sc does not exceed the determination reference value Sj, the lid is opened. The configuration is such that it is determined that the opening of 9 is for the purpose of clearing a jam, and predetermined processing, which will be described later, is carried out.

A mark 1 is located between the roll holder 2 and the platen roller 3 and opposite the back surface of the recording paper 1 being conveyed, to detect the presence or absence of the recording paper 1 and to form a mark 1 on the recording paper 1.
A sensor 12 serving as a remaining amount detection means for detecting the amount b is provided. In addition, an integrated value S is provided on the device main body 8 or the lid 9 at a position that can be operated when the lid 9 is opened.
A reset switch 13 is provided for resetting c. When the lid body 9 is opened for purposes other than jam removal, the integrated value is reset by operating the reset switch 13, and the operation section 1
The configuration is such that new length information of the recording paper 1 can be input by operating 0.

FIG. 2 is a block diagram of a control system for controlling the recording apparatus A.

In the figure, a control section 51 is composed of a CPU, ROM, RAM, etc. This control unit 51 operates the recording device A according to the stored operation program, and
An integrated value Sc obtained by accumulating the rotation amount of the drive motor 14 according to the rotation direction is stored in the memory 52, and the memory 52
Judgment reference value Sj and integrated value Sc, which are the set values stored in
A predetermined signal is transmitted to the remaining amount display section 7 to activate the display section 7, and when the sensor 12 detects that the cover body 9 has been opened, the purpose of opening the cover body 9 is determined. to reset the integrated value Sc or correct the correction value Sf for Sc.
It performs processing such as addition of .

The recording unit 53 drives the recording head 4 according to the image signal,
Further, the sensor 12 detects the presence or absence of the recording paper 1, detects the mark 1b formed on the edge of the recording paper 1, and transmits this signal to the control unit 51, and the recording paper width sensor 5
4 detects the size of the recording paper 1 loaded in the recording apparatus A and transmits it to the control section 51. Further, the stepping motor drive circuit 55 drives the stepping motor 14, which serves as a drive motor, in response to a signal from the control section 51.

As shown in FIG. 3(a), the recording paper 1 is formed into a roll of elongated thermal paper or plain paper having a predetermined width and length and wound around a core 1a.

In this embodiment, thermal paper having a thickness of approximately 80 mm is used as the recording paper 1.

The width dimension of the recording paper 1 has a value selected from column A or column B, and is set to 297 m, which is the vertical dimension of A4 size, or 364 m, which is the vertical dimension of B4 size. Further, the length dimension of the recording paper 1 is set to 30 m. However, the length of the recording paper 1 usually has a margin of several percent from the above dimensions, and actually has a length of 31 m to 33 m. Therefore, as shown in the figure, by measuring the outer diameter and inner diameter Dz of the roll-shaped recording paper l, it is possible to calculate the length of the recording paper l.

As shown in FIG. 3(b), the back side of the recording paper 1 has a length of 1 m to 3 m from the end on the core la side.
A mark 1b of 20 cm is formed. This mark lb
indicates the remaining amount of recording paper 1, and when the sensor 12 detects the mark lb, it serves as a reference for determining whether the recording paper 1 is empty in the control unit 51. .

When loading a new recording paper 1 into the recording device A, open the lid 9 and load the recording paper 1 into the roll holder 2, and at the same time, move the leading edge of the recording paper 1 through the platen roller 3 to the cutter 5. By pulling out the recording paper 1, operating the reset switch 13, and then closing the lid 9, it is possible to recognize in the control section 51 that the recording paper 1 has been replaced with a new recording paper 1.

When loading the recording paper 1 that has been used once into the recording apparatus A, the lid 9 is opened and the recording paper 1 is loaded into the roll holder 2, and the leading edge of the recording paper 1 is placed on the platen roller 3. to the cutter 5, operate the reset switch 13, and input the outer diameter D1. By inputting the dimension of the inner diameter D2 and closing the lid body 9, the control unit 51 recognizes that the used recording paper 1 has been replaced and inputs it.
It is possible to calculate the length of the loaded recording paper 1 from the above and set this value as the length of the recording paper 1.

Roll holder 2 for holding roll-shaped recording paper 1
A label 2a indicating that the reset switch 13 should be operated when the recording paper 1 is replaced is pasted on the bottom surface of the recording paper 1 at a position exposed when the core 1a of the recording paper 1 is removed.

The platen roller 3 is for contacting the recording paper 1 and conveying the recording paper 1 in the recording direction and the opposite direction.

For this reason, the platen roller 3 is made of a material such that the coefficient of friction between the roller 3 and the recording paper l is larger than the coefficient of friction Wl between the recording paper 1 and the recording head 4. Therefore, when the platen roller 3 rotates in the direction of arrow a, which is the recording direction, or in the direction of arrow A, which is the opposite direction, the recording paper 1 is conveyed in the same direction without slipping as the platen roller 3 rotates. be done.

As shown in FIG. 4, the drive system for driving the platen roller 3 is composed of a drive motor 14 capable of forward and reverse rotation and a gear train 15.

In this embodiment, a stepping motor is used as the drive motor 14. Therefore, by transmitting the rotation of the stepping motor 14 to the gear 3a fixed to the platen roller 3 via the gear train 15 consisting of gears 15a to 15d, the platen roller 3 is selectively rotated in the directions of arrows a and b. Is possible.

In addition, the frictional force between the platen roller 3 and the recording paper 1
Since the frictional force is sufficiently large compared to the frictional force between the roller 3 and the recording head 4, when the stepping motor 14 is driven to rotate the platen roller 3, there is no possibility of slippage between the roller 3 and the recording paper 1. do not have. Therefore, it is possible to calculate the transport length of the recording paper 1 by integrating the rotation amount of the stepping motor 14 according to the rotation direction.

That is, the amount of movement of the surface of the platen roller 3 corresponding to one step of the stepping motor 14 (the amount of conveyance with respect to the recording paper 1) is uniquely set by the reduction ratio in the gear train 15. Therefore, the amount of surface movement of the platen roller 3 can be set to any value.

In this embodiment, the amount of surface movement of the platen roller 3 corresponding to one step of the stepping motor 14 is changed to 15.4 steps, which is applied to a recording device such as a facsimile machine.
/m is set.

Therefore, the number of steps St of the stepping motor 14 required to convey the recording paper 1 with a length of 30 m is 5t-
30X1 (100X15.4 -462 (100 steps). Also, if recording paper 1 is A4 size, A4 standard size (21
The number of steps Sf of the stepping motor 14 required for conveying 0sm
7X15.4 -4574 (steps).

Also, a stepping motor 1 rotates the platen roller 3 in the direction of arrow a (conveying direction of the recording paper 1 in the recording direction).
4 is set as positive, and the platen roller 3 is rotated in the direction indicated by the arrow. stepping motor 1
By integrating the number of drive steps of 4, the integrated value S
It is possible to obtain c.

Figure 5 shows in table form the sequence and combination in which power should be supplied to each phase in order to smoothly drive the two-phase stepping motor 14. 0 indicates that power is supplied to any phase (A phase, 2 person phases, B phase, 9 hues), and 0 indicates that no power is supplied. Further, the index indicates any one of step numbers O to 7.

Therefore, as shown in Figure 6(a), 0→1→2→3→4→5→6→7→0→1→...
By moving the index in the order of - and switching the excitation for each phase according to this movement, the stepping motor 14 is smoothly rotated in the forward direction, and the platen roller 3 is rotated to record the recording paper 1. (Sll-513), and by increasing the count value in accordance with the movement of the index, it is possible to obtain the integrated value Sc (S14).

In addition, as shown in the same figure, the excitation for each phase can be switched by moving the index in the order of 7→6→5→4→3→2→1→0→7→6→... , it is possible to smoothly rotate the stepping motor 14 in the negative direction and to rotate the platen roller 3 to convey the recording paper 1 in the winding direction (321 to 523), and according to the movement of the index. It is possible to obtain the integrated value Sc by decreasing the count value (S24).

In the figure, Tt is an index to the excitation table for each phase of the stepping motor.

As described above, the amount of rotation of the stepping motor 14 in the positive direction and the amount of rotation in the negative direction can be counted and integrated for each step.

Therefore, when a new recording paper 1 is loaded into the recording apparatus A and printing is executed, when the cumulative number of steps (integrated value) Sc of the stepping motor 14 becomes 5c=St, the remaining amount of the recording paper 1 becomes zero. By comparing the integrated value Sc of the number of steps required for each recording with St each time recording is performed on the recording paper 1,
The difference can be recognized as the remaining amount of recording paper 1.

The remaining amount of the recording paper 1 recognized as described above is the length obtained by subtracting the consumed length from the regular length of the recording paper 1.

Since the length of the recording paper 1 usually has a margin of several percent with respect to the standard length, the remaining amount is the length added with this margin. That is, even if the integrated value Sc matches the number of steps St for conveying the fixed length of the recording paper 1, the loaded recording paper 1 will have a remaining amount of several meters.

For this reason, in this embodiment, the mark 1b formed on the loaded recording paper 1 is detected by the sensor 12, and a warning that the recording paper 1 should be replaced is issued based on this detection signal. .

As the sensor 12, as shown in FIGS. 7(a) and 7(bl), a reflective sensor is used which is a combination of a light emitting diode 12a and a phototransistor 12b.

Then, light is irradiated from the light emitting diode 12a to the back surface of the recording paper 1, and the presence or absence of this reflected light is detected by the phototransistor 12.
The configuration is such that the presence or absence of the recording paper and the mark 1b formed on the recording paper 1 can be detected by detecting the recording paper 1.

The mark 1b is formed at a predetermined length from the core 1a side of the recording paper 1, and indicates the absolute remaining amount of the recording paper 1. Therefore, the detection signal of mark 1b is the integrated value Sc
It is necessary to give priority to the remaining amount display signal obtained by comparing the remaining amount and the set value. Therefore, when the mark Ib formed on the recording paper 1 is detected by the sensor 12, a warning to the effect that the recording paper 1 should be replaced can be displayed regardless of the comparison between the integrated value Sc and the set value. ing.

Further, the integrated value Sc obtained by integrating the counts of the stepping motor 14 is the integrated value of the conveyance length of the recording paper 1 from the leading edge. Therefore, if the recording paper 1 is forcibly pulled out, or if the necessary operations such as jam repair processing are not performed properly, if the recording paper 1 that has been used once is loaded, If the outer diameter and inner diameter information of 1 is not input correctly, the mark 1b may be detected before the remaining amount display signal is generated. Even in such a case, when the mark 1b on the recording paper 1 is detected by the sensor 12, this detection signal is prioritized and a warning signal is generated, thereby displaying a warning that the recording paper 1 should be replaced. Is possible.

The set value that serves as the reference value for displaying the remaining amount can be set to an arbitrary length.

However, for facsimile machines, it is the reception time.

In many cases, the receiving side cannot determine the number of received sheets.

Furthermore, in order to receive all communications, it is desirable to replace the recording paper 1 immediately before the recording paper 1 is used up, rather than after it has been used completely.

For this reason, by statistically processing the reception frequency and the number of sheets received per time to find the standard deviation σ, and by setting the estimated remaining amount to 3・σ, a substantially safe remaining amount length for the recording paper 1 is set, It is preferable to set a determination reference value Sj that is a set value based on the difference between this remaining amount length and the total length of the recording paper 1.

The judgment reference value SJ is set as described above, and this judgment reference value Sj is stored in the control unit 51, and the cumulative value S of the number of steps of the stepping motor 14 is set as the recording is executed.
c is integrated, this integrated value Sc is compared with the judgment reference value Sj, and when Sc exceeds Sj, a predetermined signal is generated, and this signal activates the remaining amount display section 7. It is possible to display the amount of recording paper 1 remaining. Furthermore, by replacing the recording paper l based on the display on the remaining amount display section 7, it becomes possible to always use the recording apparatus A with a margin.

When displaying the remaining amount of recording paper 1, - for boat fishing, it is preferable to convert it to the number of sheets of standard size and to display a plurality of sheets.

In other words, if the recording paper 1 is A4 size, the remaining amount is "2".
0 pieces J, rlO pieces'', ``5 pieces J, ``2 pieces J.

"It is preferable to display it as 0 sheets J.

In this case, the judgment reference value sj necessary to generate a signal corresponding to the display is 5jzo, Sj+o, S
js.

Sj z, Sj o, and their values are Sjz, respectively. =St-3fX20 =370520 (step) Sj+. =St-5fX10 -416260 (step) Sjs=St 5fX5 =439130 (step) Sj, =St-5fX 2 =452852 (step) Sjo-St-5f Base jj! (i S j is stored in the memory 52 in advance, and the control unit 51 compares these judgment reference values s3 with the integrated value Sc of the stepping motor 14, and if the integrated value Sc exceeds the judgment reference value Sj By generating a predetermined signal from the control section 51 when this happens, the remaining amount display section 7 can be operated to display a display corresponding to each of the judgment reference values Sjz. to Sjo.

When displaying the remaining amount of recording paper 1 in the recording device WA, it is a condition that the recording paper 1 is loaded in the apparatus A.

That is, when the presence or absence of the recording paper 1 is detected by the sensor 12 and a recording paper presence signal is generated, the number of steps of the stepping motor 14 is counted and integrated (integrated i S c, and The integrated value Sc is configured to be compared with the judgment reference value Sj.

Further, it is not necessary to display the remaining amount particularly strictly. Therefore, 1
From the viewpoint of the capacity of the control unit, it is preferable to compare the integrated value Sc and the judgment criterion [Sj] after finishing recording of each sheet.

As shown in FIG. 8, the remaining amount display section 7 includes remaining amount display sections 7a to 7e that display 20 remaining sheets to 0 remaining sheets, and a warning display section that displays a warning that the recording paper 1 should be replaced. 7r. Each of the display sections 7a to 7f has six light emitting diodes (LEDs) arranged at predetermined positions on the lid 9, and these LEDs are turned on in response to a signal from the control section 51, thereby displaying the remaining amount and the like. It is configured to display a warning.

The color of light emitted from the LED is not particularly limited. However, it is preferable that the remaining amount display parts 7a to 7e are green or yellow-green, and the warning display part 7f is red, orange, yellow, etc.

Next, the judgment reference value Sjz. ~S”. The operation of operating the remaining amount display section 7 by comparing the integrated value Sc and the accumulated value Sc will be explained using the flowchart of FIG. 9 and the lighting explanatory diagram of FIG. 10.

First, the sensor 12 detects the presence or absence of the recording paper 1 in the recording apparatus A (S31, 32). This result recording paper 1
If there is no recording paper, the LED of the warning display section 7f is lit, and at the same time, the LED'D of all remaining capacity display sections 7a to 7e are lit (see Fig. 10 (g)) to display the information that there is no recording paper. and returns (833-35).

If there is no recording paper 1 in the recording apparatus A, the recording paper 1 is loaded into the roll holder 2. At this time, if a new recording paper 1 is loaded, only the reset switch 13 is operated, and if a used recording paper 1 is loaded, the reset switch 13 is operated and the operation section 10 displays the recording paper 1. Enter the outer diameter and inner diameter D2. Thereafter, when the leading edge of the recording paper 1 is pulled out through the platen roller 3 to the cutter 5 and the lid 9 is closed, the sensor 12 detects the recording paper 1. When recording is executed in this state, the control unit 51 integrates the number of steps of the stepping motor 14 to calculate an integrated value Sc. Then, each time one sheet of recording is completed, the integrated value Sc
is the criterion value Sjz for remaining 20 sheets. Compared to
jz. If the remaining amount is below, no lighting command is issued to the remaining amount display section 7a, and all remaining amount display sections 7a to 7d maintain the off state (336.37) (see FIG. 10(a)).

The integrated value Sc is the judgment reference value sj. When the remaining amount exceeds the amount, a signal is transmitted from the control section 51 to the remaining amount display section 7, and the LED of the display section 7a is turned on (33B) (see FIG. 10(b)).

After that, the integrated value Sc is determined as the judgment reference value Sj lo, Sj
St sj z.

When the integrated value Sc exceeds these judgment reference values Sj, the L of the corresponding remaining amount display sections 7b to 7e is sequentially compared with Sjo.
Turn on the EDs in sequence (339-50) (Fig. 10 (
C) to (f)).

As described above, it is possible to compare the integrated value Sc and the judgment reference value Sj, and display the remaining amount of recording paper l on the remaining amount display section 7 according to the comparison result.

The recording apparatus A may open the lid 9 for the purpose of repairing a jam, replacing the recording paper 1, or the like.

When the lid 9 is opened, it is necessary to perform certain processing on the integrated value Sc depending on the purpose.

When the lid 9 is opened to repair a jam, an unspecified length of the recording paper 1 is often discarded by this process. For this reason, the value corresponding to the discarded length becomes erroneous and the remaining amount display becomes inaccurate. When repairing a jam, the jammed part is the part conveyed by the platen roller 3 and is included in the integrated value Sc, the part that could not be pulled back by the rotation of the platen roller 3 in the winding direction, and the jammed part The length of the recording paper 1 pulled out for repair is not included in the integrated value. Measuring this length is difficult. However, in general, the length of the recording paper 1 required to repair a jam is about the length of one standard size sheet.

Therefore, in this embodiment, when the lid 9 is opened and it is determined that this opening is for the purpose of repairing a jam, the current integrated value Sc is uniformly set to the number of steps equivalent to one sheet of standard size. It is configured to add Sf.

Furthermore, when it is determined that the opening of the lid body 9 is to replace the recording paper 1, the current integration value [Sc is configured to be reset.

When replacing the recording paper 1, the newly loaded recording paper 1 may be reloaded after being used once and its length has been reduced. In this case, the control unit 51 controls the loaded recording paper 1.
It is impossible to determine the length of Therefore, in this embodiment, the reset switch 13 is operated twice in succession,
After that, by operating the numeric keys on the operation unit 10 and inputting the outer diameter D1, or the outer diameter and inner diameter D2 of the recording paper 1,
The control unit 51 is configured to determine whether the loaded recording paper 1 has been used once by operating the reset switch 13, and to calculate the length of the recording paper 1 based on information input from the numeric keypad. There is.

In this embodiment, the sensor 11 detects that the lid 9 is in an open state; (1) when the reset switch is operated; (2) when the sensor 12 detects that there is no recording paper immediately before the lid 9 is opened; ■When the recording paper width sensor 54 detects that the width of the recording paper 1 has changed, ■When the current integrated value Sc exceeds the judgment reference value Sj, the opening is performed for the purpose of replacing the recording paper 1. If the condition is other than ■ to ■, it is determined that the opening is for the purpose of repairing a jam, and predetermined processing is performed respectively.

Next, the operating procedure associated with opening the lid body 9 will be explained using the flowchart of FIG. 11.

First, the width of the currently loaded recording paper 1 is always detected by the sensor 54 (S61), and if it is detected that the width of the recording paper 1 has changed before and after the lid 9 is opened, the recording Assuming that paper 1 has been replaced, the total
At the same time as resetting sc, values such as the judgment reference value Sj corresponding to the paper width of the new recording paper 1 and the number of steps Sf for recording the standard size are calculated, and the closing of the lid body 9 is detected and the operation is completed. (S62-565).

If the width of the recording paper 1 does not change before and after the lid 9 is opened, the mark 1 formed on the recording paper 1 by the sensor 12
Check whether or not b is detected, and if mark 1b is detected, or even if mark 1b is not detected, if the integrated value Sc exceeds the judgment reference value Sj, It is determined that the purpose of opening the lid 9 is to replace the recording paper 1 (steps 866 to 68), and the processes following step 163 are executed.

Further, in step 68, the integrated value Sc and the judgment reference value Sj
As a result of comparison, if the integrated value Sc does not exceed the judgment reference value sj, it is determined that opening the lid 9 is to repair the jam, and the step of one standard size sheet is uniformly applied to the integrated value Sc. The number Sf is added (S69). After confirming that the lid body 9 is closed, the operation ends (S65).

When the recording paper 1 is replaced or a new recording paper 1 is loaded under conditions other than the above, operating the reset switch 13 once while the lid 9 is open will reset the current integrated value. Sc is reset and the operation ends after steps 64 and 65 (S7
0: 371). When loading a used recording paper 1, the reset switch 13 is operated twice while the lid 9 is open, and at the same time the outer diameter D1 of the recording paper 1 is loaded. When the inner diameter D2 information is input, the control unit 51 calculates the length of the loaded recording paper 1 according to the input or D (S72.573).

The purpose of opening the lid body 9 is determined by the above operation, and
It becomes possible to execute processing according to the purpose of opening.

In the above embodiment, a stepping motor was used as the drive motor 14, but the configuration is not limited to this, and it is also possible to use a motor other than the stepping motor, for example, a DC motor 21 and a rotary encoder 22.

In this case, the drive system of the platen roller 3 is configured as shown in FIG. 12, the control system of the recording apparatus A is configured as shown in FIG. By counting by , it is possible to develop a function similar to that of the above-mentioned embodiment.

In the above-mentioned embodiment, the remaining amount display was configured as 20 sheets to 0 sheets in the standard size, but by setting the table of judgment standard value Sj for each standard size sheet or every 1 m, it is possible to display more detailed information. It is also possible to display the remaining amount. In this case, it is preferable to configure the remaining amount display section 7 as shown in FIG. 14(a).

It is also possible to set a plurality of types of remaining amount display contents so that the user can select them as appropriate.

That is, when displaying the remaining amount, in addition to the above-mentioned display of 20 sheets to 0 sheets, r60 sheets, 530 sheets, 15 sheets, and 10 sheets are displayed in advance.

5 pieces J or combinations like "10 pieces, 5 pieces, 12 pieces, 1 piece, 0 pieces", or rlOm, 5m, 3m, 1m, Om
In addition to setting a combination such as J, the length data corresponding to this combination is stored, and the user selects a preferred combination by operating the numeric keypad on the operation unit 10, so that the content of the remaining amount display can be adjusted as appropriate. It is possible to change.

In this case, a sticker shown in FIG. 15 may be prepared and affixed to the remaining amount display section 7.

<Effects of the Invention> As explained in detail above, the recording device according to the present invention has the following effects:
The amount of paper currently loaded can be displayed. Therefore, it is possible to know the remaining amount of recording paper without opening the recording apparatus as in the past, and it is possible to replace the recording paper as appropriate.

Therefore, it is possible to reduce troubles such as inability to receive data due to the lack of remaining recording paper.

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional diagram of the recording device, Fig. 2 is a block diagram of the control system of the recording device, Figs. , FIG. 5 is an explanatory diagram of an excitation table when driving a two-phase stepping motor 1-2 layers, FIGS. Figures 7 (a) and (b) are explanatory diagrams of the sensor, Figure 8 is an explanatory diagram of the remaining amount display section, and Figure 9 is the judgment standard value S.
Fig. 10 is an explanatory diagram of lighting of the remaining amount display section, Fig. 11 is a flow chart of the operation procedure associated with opening the lid, and Fig. 12 The figure is an explanatory diagram of a drive system according to another embodiment.
3 is an explanatory diagram of a control system according to another embodiment, and FIG. 14 (a
), (g)) are explanatory diagrams of the remaining amount display unit according to other embodiments,
FIG. 15 is an explanatory diagram of the seal. A is the recording device, 1 is the recording paper, 1a is the core, 1b is the mark,
2 is a roll holder, 2a is a seal, 3 is a platen roller, 4 is a recording head, 5 is a counter 16 is a pair of ejection rollers, 7 is a remaining amount display section, 8 is a device main body, 9 is a lid body, 10 is an operation section , 11 is a lid opening sensor, 12 is a remaining amount detection sensor, 13 is a reset switch, 14 is a drive motor, a stepping motor, 15 is a gear train, 21 is a motor,
22 is a rotary encoder, 51 is a control section, 52 is a memory, 53 is a recording section, and 54 is a recording paper width sensor. Patent applicant Canon Co., Ltd.

Claims (12)

[Claims] (1) A recording medium wound into a roll, a recording means for forming an image on the recording medium, a conveying means for conveying the recording medium in the recording direction and the winding direction, and the conveying means The amount of rotation of the drive motor that drives the motor is integrated according to the direction of rotation, the integrated value is compared with a preset value, and a signal is generated when the integrated value exceeds the set value. A recording device comprising: a control means; and a display means that operates in response to a signal from the control means. (2) The recording apparatus according to claim 1, further comprising a lid for opening the inside of the recording apparatus, and a detection means for detecting the open/closed state of the lid. (3) The recording apparatus according to claim (2), wherein when the detection means detects that the lid is opened, it is determined that the integrated value has become indefinite. (4) Claim (3) characterized in that when the detection means detects that the lid is opened and determines that the integrated value has become indefinite, a preset correction value is added to the integrated value. ) recording device. (5) When the detection means detects that the lid is opened, it is determined that this opening is for replacing the recording medium, and the integrated value is reset.
) recording device. (6) When the detection means detects that the lid is opened, the control means compares the set value and the integrated value;
Claim (2) characterized in that when the integrated value does not exceed a set value, a correction value is added to the integrated value, and when the integrated value exceeds the set value, the integrated value is reset.
Recording device as described. (7) The recording device according to claim (1) or (2), further comprising a switch for resetting the integrated value. (8) The recording device according to claim (7), wherein a switch for resetting the integrated value is provided at a position that can be operated by opening the lid. (9) A remaining amount detecting means for detecting a remaining amount mark formed on the roll-shaped recording medium, and when the integrated value exceeds a set value, the lid body is in a closed state and the remaining amount detecting means The integrated value is reset when the remaining amount mark of the recording medium is detected by the above, and the integrated value is not reset in cases other than the above conditions, and the reset switch is to be operated when the roll-shaped recording medium is replaced. The recording device according to claim 7 or 8, wherein the recording device performs display. (10) The recording apparatus according to claim (9), further comprising a display on the bottom of the roll holder indicating that a reset switch should be operated when the roll-shaped recording medium is replaced. (11) The recording apparatus according to any one of claims (1) to (10), further comprising an input means for inputting the remaining length of the recording medium wound into a roll. (12) The recording apparatus according to claim 11, wherein the remaining length of the recording medium is input as an outer diameter or values of an outer diameter and an inner diameter of the recording medium wound into a roll.