JPS6312441A - Cassette type label printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industry-1] Field of Application] The present invention relates to a label printer that prints labels to be attached to various products, and is particularly suitable for printing large quantities of various types of labels. Regarding cassette type label printer.

[Prior Art I] In recent years, there has been a demand for label printers that can print a wide variety of labels most suitable for well-known products in a 1-ft. 1. In order to meet this demand, we have developed a printer that has multiple printing formats and is compatible with the order in which the labels are pressed.
-A label printer configured to automatically select and print pine I has been developed (Japanese Patent Laid-Open No. 57-174
Publication No. 294).

In this type of label printer, generally, a label roll in the form of an L-knot-shaped backing paper with labels pasted thereon is attached to the printer, and the labels are sequentially transferred and printed. 1. Therefore, if the label runs out during printing, when changing the label type, please change the label L.
'You need to wear a J-ru.

In this case, the tip of the label roll must be routed along a predetermined guide to attach it, which is a tedious task.Especially when there are many types of labels, replacement work increases, which reduces work efficiency. It became a contributing factor.

In order to eliminate such inconvenience, the applicant first
Proposed a cassette-type label printer (Japanese Patent Laid-Open No. 1983-
188821). This allows labels and receipt paper to be easily replaced each time the label roll and receipt paper are stored in a cassette case.

[Problems to be Solved by the Invention] By the way, in the above-mentioned conventional cassette type label printer, the platen roller is built into the cassette case.
Since the paper is sandwiched between this and the thermal head provided on the main body side, there are restrictions on the position of the platen roller within the cassette and the arrangement of parts around it, reducing the degree of freedom in design. There was such a problem. Therefore,
I thought about putting the platen roller outside the cassette, but
In this case, it became difficult to set the label at the printing position.

This invention was made against this background, and does not have any components of the printing section such as a platen roller inside the cassette, and moreover, it automatically places a label on the printing section -3= position of the print head. The purpose is to provide a cassette type label printer that can be set.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a cassette storing a label roll, and a mounting method for mounting the cassette on the label printer main body side. and a type detecting means for detecting the type of the attached label; and a feed-out transfer unit for feeding out the tip of the cassette label roll on the nil mark and transporting it to the printing unit when the cassette is attached and the cassette is in a saw state. T, stage, 1) a label detector disposed between the Q cassette and the printing section, and the output of the label detector and 1fjj jL! and control means for stopping the leading end of the label roll at a predetermined position of the printing section based on the detection result of the type detection means.
゜[Function] According to the above configuration, the saw label stored in the cassette is
In the 1st stage of feed-out transfer, the Salel is transferred to the printing section with 1;・). At the time of printing, the label position is detected by a bell detector, and the paper is transported by a length corresponding to label #111 and stopped at the printing position. As a result, just by installing the cassette, the label is automatically set in the printing position.

Further, since it is only necessary to incorporate the feeding roller inside the cassette, there is a large degree of freedom in design.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

In Figures 1 to 8, l is the label printer body, 2
is a stand that supports the label printer main body I. A display section 5 and an operation section 6 are provided at the top of the front panel 3 of the label printer main body 1, and a switch section 7 is provided at the bottom of the front panel 3. Further, from the lower right end of the front panel 3, a label 8 affixed to a mount 8a is let out and taken up on a take-up reel 9.

FIG. 2 is a front view showing the configuration of the display section 5, operation section 6, and switch section 7. As shown in FIG.

First, the display section 5 displays each item to be printed on the label 8, including the product name, product attributes, and various messages. It consists of area 5b that displays the sales date 11, etc., area 5c that displays the product number and sales + p price, and area 5 that displays the flight number, label type, etc. Note that 25a to 5d are composed of liquid crystal displays.

The operation unit 6 is composed of a flat board (in) consisting of a numeric keypad and function keys, and a mode changeover switch 6b for switching the operation mode of the label printer between I and IJ. , label issuing mode, online mode, mask registration mode, 43 and 11 attached modes.

The switch unit 7 is composed of a power switch 7a, a label rewind switch 71+, a label feed switch 7C, a label detection sensor sensitivity adjustment knob 7 (1), and a connector 7 for external device connection.

Next, referring to FIGS. 3 to 8, the IH, Jji portions of the label printer main body 1 and the cassette 1.3 (I) will be explained.

In these figures, ζ and I() are side plates fixed perpendicularly to the main body 1. On the front side of the side plate IO, the central and lower parts of the support plate +1 are superimposed and fixed (sixth
figure). Further, the upper part of the support plate 11 is bent forward in a stepped manner, and the plate 12 for attaching the cassette is attached to this part, and the side plate 10
is fixed parallel to.

A stepping motor I3 is fixed to the back side of the side plate 1O where the side plate 1O and the support plate II overlap. The shaft 13a of the stepping motor 13 protrudes forward from the support plate 11, and the motor side gear 14 is fitted into the protruding portion, and the tip of the shaft 13a is fitted into a bearing 16 attached to the plate I5. (Figure 3). Note that the bearing plate 15 is fixed to the front surface of the support plate 11 with screws.

Further, a side plate l is attached to the shaft 13a of the stepping motor I3.
A pulley 17 is fitted on the back side of O (FIG. 8) and drives a timing belt 18. The timing belt 18 rotationally drives the platen roller 2I of the printing section 20, and is stretched horizontally between the pulley 17 and the pulley 22, and the timing belt 18 rotates between the pulley 22 and the shaft. The platen roller 21 is rotatably driven via a gear 21a that rotates 1° between the platen roller 21 and the shaft.

The thermal head 2 is installed on one side of the platen [1-ra 21].
3 are arranged facing each other, and are pressed by a head suppression spring 24 that urges them in the 1 direction, and by the platen roller 21 in the 1-, . Printing is then performed on the label 8 that is transferred between the platen roller 21 and the thermal head 23. The label 8 is fed out from the cassette 30, guided between the guide plates 25 consisting of a pair of upper and lower guide plates 25a and 25b, and placed on the platen roller 21.
The platen roller 21 extends the paper to the outside. Further, a label detection sensor 26 consisting of a light-emitting cable 26a and a light-receiving element 2 (ih) is provided in the middle of the guide plate 25, and detects the label 8. This is done by taking advantage of the fact that the number of light-receiving ports 1 increases at the spacing positions of the labels 8.

The printing section 20 is also provided with a lever 27 that rotates around a pin 27a, and when the upper end of the lever 27 is rotated counterclockwise, the support section 21a of the platen roller 21 rotates downward around the pin 21b. , the platen roller 21 is separated from the thermal head 23 so that the heating element of the thermal head 23 can be cleaned. Note that the support portion 21a is
By the pin 21c that fits into the lower end recess of the lever 27,
It is stopped in the position shown in FIG. 3 or 4. Further, a cutter 28 is provided above the front of the platen roller 21, and a guide plate 29 is provided below the thermal head 23.

Next, the cassette 30 will be explained with reference to FIG. 5 and the like.

The cassette 30 stores the label roll and feeds out the tip of the label 8 to the printing part 20, and is composed of a circular container-shaped storage part 30a having a bottom plate 30c, and a feeding part 30b provided at the bottom thereof. Ru.

The storage section 30a is covered by a circular cassette lid 32 with a handle 3I attached to the center. This cassette lid 3
Remove the bottom plate 3 at 4 degrees and place it in the center of the storage section 30all.
A label roll set shaft 33 protruding from 0c is installed, and when the center hole of the label roll is fitted into this shaft 13, the label roll is mounted. The cassette 5 412 is fixed by engagement between a saw Ll pick pin 33a protruding inwardly from the dowel roll set shaft 33 and a saw fixing plate 31n (FIG. 6) attached to the tip of the handle 3. Ru. 1, the bottom plate 30 is placed in the center of the rear end surface of the label roll set shaft 33.
c/r: ['j A guide hole 428° is provided through 6J, and a guide hole 421 is provided near the feeding portion 30b.
+' is provided.

Feeding part 3 (l MJ, , feeding 1j-ra 35
, a pinch roller 36 that is pressed by the pinch roller 36, a guide plate 37 that guides the unreeled label, and a rewind guide plate 38.

The rear end of the feeder 35 protrudes rearward from the bottom plate 30c of the cassette 30, and there is a gear in this protruding part. (5B is fixed. The gear 95a is a gear that meshes with the two consecutive motor side gears 14 when the cassette 30 is attached to the main body 1, and thereby the feeding roller 35 is rotationally driven. On the other hand, a coil spring 35b that biases the roller 35 backward is fitted into the axially heavy end of the feeding roller 35.This is because when the cassette 30 is attached to the main body I, the motor side gear I4 This is to ensure that even if the gear 35a does not mesh with the gear 35a, it will automatically mesh with the stepping motor 13 when it starts rotating.

Note that there is a manual knob 3 at the front end of the feeding roller 35.
5c is attached so that the label 8 can be manually fed out. Further, the gear 35a is covered by a cover 35c1.

The pinch [1-ra 36 is fitted into the shaft 36aj so as to be rotatable twice, and both ends of the shaft 36a are attached to the coil spring 36b by J',
is urged in the direction of the feeding roller 35 (the eighth
figure). Further, the bearing 36c of the shaft 36a is formed in the shape of a long hole, so that the pinch roller 36 comes into contact with the feeding roller 35 and moves away from it - 1! − has been done. The reason for this will be explained later.

The label 8 transferred between the feed roller 15 and the pinch roller 36 is -1-1-' guide plate 37a.

It is guided by the guide plate 37 consisting of 37b and transferred to the guide plate 25 on the main body l side. Note that a cutter 37c is formed at the tip of the guide plate 37a.

There are 38 unwinding guide plates, which can be opened and closed by hinges provided at their lower ends (Fig. 4 shows the closed state, and Fig. 5 (c) shows the open state). When the tape 8 is unwound, it is prevented from escaping to the outside, and is stored inside the storage section 30.

Next, the device 1 part 40 of the cassette 30 will be explained with reference to FIGS. 714441.41 is erected and protrudes forward 3 6, similarly the guide rod 4
2h is installed near the gear 14 (forced), and the guide rod 1-
42a is provided at the center of the cassette receptacle plate 12. It is supported on the support rod/II, 41)
When the cassette 30 is pushed into the main body side, the guide hole 42a provided in the label roll set shaft 33 of the cassette 30
° fits into the guide rod 42a, and the guide rod 42b fits into the guide hole 42b.

to attach the cassette 30 to a predetermined position. In this case, since the guide rod 42b is provided near the gear 14, when the cassette 30 is installed, the gear 1 on the main body side
4 and the cassette side gear 35a are ensured to mesh with each other. Additionally, there are four spacers 43 between the bottom plate 30c of the cassette 30 and the cassette mounting plate 12.
It is maintained at a constant interval by... Furthermore, 30 cassettes
The legs 30f fit into escape holes 44° 44 provided in the plate 12 for mounting the cassette. Further, the bottom plate 30c is attracted and fixed by magnets 45.45. In this embodiment, the cassette 30 is fixed by the magnets 45, 45, but a locking mechanism may be further provided to prevent the cassette 30 from coming off unless the lever is operated.

Next, a mechanism for determining the type of cassette will be explained. This determination is made by attaching the holder 5 (1 (FIG. 7)) fixed to the upper part of the bottom plate 30c of the cassette 30 to the 4 pieces of glue fixed to the bent part 14 of the cassette mounting plate 12.
rTutch! '1111~Fildl is detected and performed. Here, the limit switches 51a to 51d are turned on when the backing plate 5 (detects 1) and turned off when not detected. It is possible to detect whether the cassette 1.410 is attached to the device 11 or not, and to detect whether the cassette 1. , the binary W ((I
~15), the cassette l-:40 containing 15 types of labels is detected.

Next, the electrical configuration of this embodiment will be explained with reference to FIGS. 9 to 1I.

In these figures, (i (11JCl' U) is shown.
2 is a RAM, which provides CP Ll 1i (1 noter 1 of L, J for rear and various registers to be described later)', and 63 is a communication device for communicating with external equipment. It is an interface.

The print control section 70 is connected to the CPU 60 via a printer interface 71. This printer interface 71 includes output signals from limit switches 51a to 51d for detecting label types, and output signals from the label detection sensor 2.
The output of the light receiving element 26b of No. 6 is supplied. Also,
From the printer interface 71, a DC motor 72 that drives the take-up reel 9 and a stepping motor 1 are connected.
At the same time, a control signal is sent to thermal head 2.
The drive signal DP is sent to the drive circuit 73 of No. 3, and the print data DAT is sent to the shift register 74 connected to the front stage of the drive circuit 73.
A and clock CP are supplied.

The drive circuit 73 is composed of an AND gate Pn 73a and a driver circuit 73b, and is configured to drive the heating elements R1 to nn of the thermal head 23 to perform dot printing. In addition, the shift register 7-4 is input from the CPUBO via the printer interface 71.
The print data D A 1"8, which is supplied by the single 11th input, is taken in and supplied to the AND gate group 73a.
l゛Ro1゜Next, refer to Figure 11 (1 - ζ, 1e 0, label type table 1 stored in M61 ())
Ru.

This table 8() has 1
According to each of the five types of labels fIII, the length of the label 8 in the traveling direction including the gap part (hereinafter simply referred to as label length) 1, 1, from the 04 end of the label 8 to the stop position I) Length 2 up to, stop position P from the rear end of label 8
Until 14th 1. : I% Number of labels CO located between the label feed group I, 4, the thermal head 23 and the label detection sensor 2G when adjusting the sensitivity of the larabe detection sensor 26
(In this embodiment, the front end of the label 8 is detected L as in the conventional case.
) Goshichiki 1. Since the number of double labels is counted, in the case of FIG. 11, +J: Co=4) and the print format → member 11' are stored. In addition, the length L I~
1.11 is stored as the number of pulses of the stepping motor 13. Moreover, the upper lengths L3 and L4 are used for control when feeding the label 8 and testing the sensitivity of the label detection sensor 26.
Since the sensitivity test processing is not directly related to the present application, its explanation will be omitted.

In the above configuration, when the cassette 30 in which the label roll is set is mounted on the mounting section 40, the limit switches 51a to 51d detect this, and the stepping motor 13 is driven in normal rotation under the control of the CPU 60. As a result, the feeding roller 35 and the platen roller 21 are rotated in conjunction with each other (see FIG. 12(a)), and the feeding roller 35 feeds out the label 8. The label 8 is then transferred between the platen roller 21 and the normal head 23 through the guide plate 25 and the label detection sensor 26, as shown in FIGS.

In this case, the label transport speed by the platen roller 21 is slightly higher than the label transport speed by the feed roller 35. Thereby, even if the label 8 becomes loose between the feeding roller 35 and the platen roller 21, it can be returned to the naturally stretched state. Moreover, if the tension is too high, the pinch [1-ra 3] will escape in the direction away from the feeding roller 35, and this tension will be eliminated. This is the shaft 3 of the pinch roller 3G (the bearing 36c of the ia is a long hole).In this way,
The transport 1it of the label 8 is determined by the 1-ra 21 to the platen, and is fed by a predetermined length U(+', actual ζ32).

On the other hand, when the stepping motor 13 is reversed, the platen roller 21 and #! 41 protrusion El-ra 35 is shown in the same figure (
Rotate in the direction shown in d) to unwind the label 8. At this time, the guide plate 38 prevents the label 8 from escaping outward (to the right in the figure) by 11-4 degrees. By using this quick return, when removing the cassette 30, it is not necessary to waste the label 8 located between the cassette 30 and the printing section 2().

Next, the operation of the cassette 3 (lq) will be explained.

FIG. 13 is a general flowchart 1 showing the 111 essential points of this operation. When the cassette 30 is installed, the label 8 begins to feed out after a certain period of time (
When the first label 8 reaches the label detection sensor 26, the "
The output of the sensor 26, which was at the "g" level, becomes the "L" level, and when the first label 8 passes, the output of the sensor 26 changes to the "H" level again.

Therefore, during the passing period of the first label, the stepping motor 1
By counting the number of pulses supplied to step 3, the length of the leading label can be measured (step 5i2). In addition, when measuring the label length including the gap length as in this embodiment, the front end of the first label, that is, the point in time when the output of the sensor 26 changes from the "H" level to the "HI" level is detected. It is sufficient to count the number of pulses until the leading edge of the second label is detected.

In this way, if the measured length of the first label is the standard length, this label is set at the printing position, but if it is not the standard length, that is, if the label is cut in the middle, then the next label is set. Place the second label in the print position.

This operation is steps 83 to S5. Note that for the regular length of the label, the length to the printing position, etc., numerical values stored in the label type table 80 are read out and used. Also,
At this time, the label fIIi class + J, and limit switch 518 to 5th dζ are determined. .

Next, details of the bipedal motion will be explained with reference to the detail flowchart 1 in FIG. 14.

In this flowchart 1, steps Sl'l to I4 are the label feeding process, steps 5P15 to ■8 are the label length measurement, step S P + 9 is the child J ivy of whether the leading label length is normal or σ1, and step S I ) 13.20
22 shows the operation of stopping the label at the printing position. .

First, in step 51)1, the limit switch 5
1a to 51 (1a to 4') Check whether all 4' are off, and if all are off, a message ``Cassette is set'' is displayed in the area 5a of the display section 5.

On the other hand, at least one of the limit switches 51a to 51d is on.
If there is, CP LJ (i 0 determines label←f class from these on patterns (step 5P
3). CP IJ li (l is a register secured on the RAM 62 by searching the label type table 80 using this type as a key, reading out the numerical values 1 to L4, Co, and print format number F corresponding to the attached label. (Step 5P4).

After completing the above preparations, the CPU 60 sets a 3 second timer (step 5P5) and displays in area 5a of the display section 5 the message "The cassette has been set. Feed will start in 3 seconds" (step 5). 5P6). and,
After 3 seconds have elapsed (step 5P7), constants are set in the counters SP, LC, and PC on the RAM 62. Here, the counter (stop counter) SP counts the feed amount in order to stop the feed when the feed amount of the label 8 exceeds a certain amount.
Each time one pulse is supplied, the count is down by one from the initial value 1'MAX (for example, 4000 steps). If the feeding process does not stop even after counting 4000 steps, it is determined that a level failure of the label detection sensor 26, a label jam, etc. has occurred, and an abnormality is displayed (Step 5P23).

The counter (label counter) LC detects the number of labels (passing through label detection sensor 2), as well as the front end of the label (1). A counter (pulse counter) is used to count the number of pulses supplied to the stepping motor 13 after detecting the end of the label. The initial value is set to 0 (Sufu Tsubu S l' 8
).

Next, step b I' is in step 1;
In the loop of ~17, the steering/sobbing motor 13 is stepped one pulse at a time to feed the electric current 11.

First, step S I' I (l advances the stepping motor 13 by l steps).
So, Stosoblinounta! ) 1) and counts down by 1, then the stop counter SP is not zero (step Sl"12), and the pulse counter PC is counted down. If is not L 2 (step Sl'+3),
Label detection sensor 2 (until i detects label 8 (
Step Sr”11), drive the stepping motor 13 to continue feeding (step 5 PIO to I/I)
.

Eventually, when the label 8 reaches the label detection sensor 26 and is detected (step SP l 4), the label counter L
C is incremented by 1 in step 5P15), and it is checked in step SP+6 whether the label counter LC is 2 or not. If it is not 2 (it is 1 at this time), set the pulse counter PC to 0 (step 5P).
17), return to step 5P10. This means that the preparation for measuring the length of the first label is completed.

If the value of the label counter Lc is 2, this means that the leading edge of the second label has been detected. In other words, the pulse counter PC contains the length of the first label as a count value. However, this label length also includes the interval between labels. When the label length is detected, the value of the pulse counter PC is stored in the label length register, and the pulse counter PC is cleared in step SP'18).In step 5P19, the value of label length register 2: toster L is stored. It is checked whether l is within the range of 11: prison length L I±α (where α is a constant small value).

First label length L h (+l If it is within the two-dimensional range,
From step 5PI9, return to step S F) IO and continue feeding 1, and when the value of pulse counter PC reaches the length to the printing position 1 or 2, go from step SI) + 3 to step 5P21. Then, check whether the number of labels that have passed through the label detection sensor 26 (the number of label front edge detections) has reached 1-1i Co in FIG. 11(n) from h'i of the label counter LC =>. . In the case of LC-co, in step 5P22, the message ``Label feed completed, J-Nijita-1'' is displayed, and the feeding process is ended.On the other hand, LC≠C.

At the time of , continue 1- and step SP +
Transfer control to 4.

If the first label C1 is not within the normal label length range, that is, if the first label is cut off, move the second label to the print position. t'r' +1. To supply, the value C
.

(Step 5P20), step 5PI
Return to O and perform the same process as above. This causes the printer to stop at the printing position for the second label.

The above is the operation when the cassette 30 is installed. On the other hand, rewinding is performed by cutting the printed label 8 with the cutter 28 and then pressing the rewind switch 7b. When this switch 7b is pressed, the stepping motor 13 is rotated in the reverse direction by a certain amount, and the label 8 can be rewound to the feeding opening of the cassette 30 (see FIG. 12(d)).

The above are the main operations of this embodiment. According to this embodiment, the following effects can be achieved.

(2) Since the cassette 30 does not include components of the printing section 20 such as the platen roller 21, the printing section 20 and the label feeding section 30b are completely separate. As a result, the inconvenience that print quality is affected by the mounting state of the cassette 30 is eliminated, and stable print quality can be obtained.

■When the cassette 30 is installed, regardless of the type of built-in label, the first label is automatically moved to the specified printing position. The label will be ready for printing. In addition, label replacement work becomes extremely easy.

(Feeding out [l-ra; 5 and the unrolling roller 21 are interlocked, so the label 8 can only be left in its original position.

As a result, the label is cut outside the printing section 20.
You can go up to the rewind switch 71) and rewind.
It is possible to prevent the label 8 from being wasted when replacing the label. .

■Compared to the conventional cassette 30 with a built-in platen roller, the degree of freedom in setting 11L has increased, and the number of labels that can be stored has also increased. Since the structure was such that the platen roller was pressed into contact with a thermal head attached to the outside of the cassette, there were restrictions on the mounting position of the platen roller, and the freedom of design was hindered in terms of space. In this example, the platen roller 21 is taken out of the cassette 30)
Now, there are no such restrictions at all.

■If the first label fed out is cut in the middle, the next label is automatically set in the printing position, so when loading the cassette, it is possible to check whether the first label was cut in the middle or not. There is no need to check the following.

(2) If the label detection sensor 26 is impaired or a paper jam occurs and the feed cannot be stopped, it is forcibly stopped, so that unnecessary feed can be minimized.

Note that the following modifications are possible in this embodiment.

(1) In this embodiment, the label 8 is wound up continuously without being peeled off from the backing paper, but the present invention is not limited to this.
The present invention can be similarly applied to a label printer configured to peel labels one by one from a mount. In this case,
The label and the liner may be transported by a feed roller provided outside the thermal head.

(2) In this example, the length from the front end of one label to the front end of the next label was measured as the label length, but the length from the front end to the rear end of the label, that is, The actual label length, which does not include the label interval, may be detected. Also, print 1 using the front edge of the label as a base.
Although the label is stopped at the 1γ position, it may also be stopped at the print position with the trailing edge of the label set to Although it is necessary to detect the front and rear edges when measuring C1, it is convenient to detect label breaks. This is because the next label should arrive, and if it does not, it can be immediately determined that the label is out.

(3) In this embodiment, the type of label is detected by detecting the type of cassette +2 using a limit switch. Therefore, if the type of cassette and the type of label stored therein do not match within a page such as 114, normal control is not performed. Therefore,
Detect label type by directly inspecting the label ・1”
I can see that. For example, as mentioned above, the length of the label can be measured using the label detection sensor. The type can be detected.

Note that instead of directly detecting the label type using the output of the label detection sensor, a configuration may be adopted in which the output is used to check whether the label type detected by the limit switch is correct. Further, the detection of the label type N may be performed by forming a type detection mark on a part of the label or mount in advance and detecting the mark.

(4) In this embodiment, a feed roller and a pinch roller are built inside the cassette. This structure is considered preferable considering that it is easy to attach the cassette to the attachment part and that the tip of the label roll in the removed cassette is protected, but it is not limited to this structure.

For example, if only one of the feeding roller or the pinch roller is built into the cassette, and the other is installed in the mounting section of the label printer main body, then when the cassette is installed in the mounting section, the label roll will be inserted between the feeding roller and the pinch roller. Constructed so that the tip is sandwiched 1.
] It is possible. However, in this case, remove the cassette 1. It is necessary to devise ways to hold the tip of the label roll when the label roll is opened and the structure for mounting the cassette. .

[Effect of the Invention 1] As explained above, the present invention comprises a cassette containing a label roll, a mounting section for mounting the cassette on the label printer main body, and a system for detecting the type of label mounted.・A type detection means (1), a feeding and transporting means (11) that feeds out the tip of the label roll from the cassette with the cassette (11) attached and transfers it to the printing section, and a device between the cassette and the printing section. Based on the output of the label detector provided and the detection result of the type detection means, the tip of the label
Since it is equipped with a U control stage that stops at a predetermined position of the printing part, the following effects can be obtained.

■When the cassette is inserted and turned 1, the label is automatically transferred to the printing position. This makes label replacement work extremely easy.

■Compared to the conventional 6 with a built-in platen roller in the cassette, the degree of freedom in design is increased and the amount of labels that can be stored is increased. In other words, in conventional cassettes, the platen roller is in pressure contact with the thermal head attached to the outside of the cassette, so there are restrictions on the mounting position of the platen roller, and the space also hinders the freedom of design. I was reading. In the present invention, the platen roller is placed outside the cassette, so there is no such restriction at all.

■The first label that is transported is stopped at the printing position, so no labels are wasted.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the external configuration of a label printer according to an embodiment of the present invention, FIG. 2 is a front view showing the configuration of the display section, operation section, and switch section of the same label printer, and FIG.
The figure is a side view showing the state of the same label printer before cassette I-30 is installed, and Figure 4 is the cassette 30 of the same label printer.
Fig. 5 is a side view showing the state after installation, and Fig. 5 is a view showing the configuration of cassette I-30. The front view and FIGS. 6 to 8 are views 4' showing the state when the cassette 30 is installed;
The figure is a side sectional view, FIG. 7 is a flat curved view, FIG. 8 is a plan sectional view, FIG. 9 is a block diagram showing the electrical configuration of the label printer, and FIG. 10 is a configuration of the printing control section 70. Block Diagram,
Figure 11 (conceptual diagram for explaining the structure of the J label type table and the meaning of each numerical value; Figure 12 is a diagram for explaining label feeding and winding 1; Figure 13) Explains the operation of the same label printer when the cassette is installed゛・1′
14 is a detailed flow chart 1 for explaining the same operation.
. L...Label printer body, B...Label, 13...Stepping motor, 2C)
...Printing section, 21...Platen roller (
Feeding transfer means), 26... Label detection sensor → J-190... Cassette, 35...
Feeding roller (feeding transfer means), 40...
- Mounting section, 51a to 51d...Limit switch (type detection means), 60...CPU (controlling means). Outerman Teraoka Seiko Co., Ltd.

Claims (5)

[Claims] (1) A cassette storing a label roll, a mounting part for mounting the cassette on the label printer main body side, a type detection means for detecting the type of label mounted, a feed-out transport means for feeding out the leading end of the label roll from the cassette and transporting it to the printing section; a label detector disposed between the cassette and the printing section; an output of the label detector; A cassette-type label printer comprising: a control means for stopping the leading end of the label roll at a predetermined position of the printing section based on the detection result. (2) The label printer according to claim 1, wherein the feeding and transporting means is automatically activated after a predetermined period of time has elapsed after the cassette is loaded. (3) The label printer according to claim 1 or 2, wherein the type detecting means utilizes a label type determining section provided in the cassette. (4) The label printer according to claim 1 or 2, wherein the type detection means utilizes the output of the label detector. (5) The control means measures the label length at the leading end of the label roll, and if the label at the leading end is not of a regular length, stops the feeding and transporting means when the next label reaches the printing position. Claim 1 characterized in that
Label printer as described in section.