JP2574676Y2 - Printer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for printing on labels, tapes and the like.

[0002]

2. Description of the Related Art Recently, label printers for printing arbitrary characters, numerals, and the like on labels coated with an adhesive have been developed. Such a label printer is of a thermal transfer printer type, and performs printing by interposing an ink ribbon (a medium to be printed) and a label between a print head and a platen. Since the width is almost the same, the print head is fixed during printing, and the ink ribbon moves by the rotation of the platen. In this type of printer, the ink ribbon and the label are housed in a cassette case, and are configured to be detachable from the printer body. Therefore, when removing the cassette case from the printer body, it is necessary to separate the print head from the platen. That is, if the cassette case is removed from the printer body while the print head and the platen are in contact with each other, the print head and the ink ribbon will be damaged.

[0003]

In such a configuration, in order to simplify and reduce the size of the mechanism, the user operates the lever when the cassette case is attached or detached, and manually moves the print head from the platen. A mechanism for separating them has been considered.

[0004] However, such a printer has a drawback that if the user neglected the manual operation of the lever and the cassette case was accidentally removed while the print head was in contact with the platen, the print head and the platen would be damaged. there were.

[0005]

OBJECTS OF THE devised to solve the above this invention has been made to solve the above problems, the print head is the to-be-printed medium is taken out in a state in contact with the print medium <br/>
As a result, damage to the print target medium etc. will occur.
It is an object of the present invention to provide a printer that can prevent the occurrence of the problem . In addition, this invention is applied to a printing medium.
Transition to the print state by the print head and marking of the print target medium
Quick and easy transition to the removal state from the character medium storage unit
The purpose is to provide a printer that can be performed reliably
And

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a main body case, a print medium storage section provided in the main body case for detachably storing a print medium,
A cover that covers the print medium storage section , and an urging unit that constantly elastically urges the print head in a direction away from a printing position on the print medium stored in the print medium storage section,
The print head is moved to the printing position against the urging force of the urging means in a state where the lid covers the print medium storage section, and the lid is opened from the print medium storage section. Print head moving means for separating the print head from the printing position by the urging force of the urging means when the print head is moved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. This embodiment shows an example in which the present invention is applied to a label printer. FIG. 1 is a perspective view showing the external configuration of the label printer, FIG. 2 is a side view showing the internal configuration of the label printer, FIG. 3 is a side view showing the main part, and FIG. 4 is a side view showing the internal configuration. 5 and 6 are partial cross-sectional views for explaining the operation, and FIGS. 7 and 8 are plan views for explaining the operation.

As shown in FIG. 1, a display unit 2 for displaying character data to be printed and a keyboard 3 for inputting hiragana and numerals are provided on a main body case 1 of the label printer.
Are provided. A label outlet 4 from which a printed label 22 to be described later is discharged is provided on a side surface of the main body case 1.
And a cutter lever 5 is arranged above the label outlet 4.

As shown in FIG. 2, the cutter lever 5 is formed in an arc shape, and a lever gear 6 is attached to one end thereof. The cutter lever 5 and the lever gear 6 are pivotally supported by a rotation shaft 7 so as to be rotatable in the directions of arrows A and B. The rotating shaft 7 is mounted on the chassis 1 of the main body case 1.
It is fixed to 0. A cutter gear 8 for moving the cutter holder 12 is engaged with the lever gear 6. The cutter gear 8 is rotatably supported by a rotation shaft 9. The rotating shaft 9 is also fixed to the chassis 10 of the main body case 1. The cutter lever 5 is mounted on the chassis 10.
Is urged in the direction of arrow A by a spring 11 provided at the end of the spring. The cutter gear 8 is engaged with an engagement pin (not shown) of the cutter holder 12. A cutter is fixed to the cutter holder 12, supported by guide pins provided on the chassis 10, and is configured to be vertically movable in the directions of arrows C and D.

The platen 18 is supported by a platen shaft 19 provided on the chassis 10. The print head 20 is configured to contact / separate from the platen 18. The label cassette 21 is detachably housed in a cassette housing section 1a described later with reference to FIGS. 5 and 6, and includes a label 22 wound in a roll shape, an ink ribbon supply roller 23, and an ink ribbon winding roller 24. And built-in. The label 22 is guided by the guide roller 21 a and is sent out between the platen 18 and the print head 20. The ink ribbon 25 is connected to the ink ribbon supply roller 23.
And is sent out between the platen 18 and the print head 20 while being aligned with the surface of the label 22, and wound around the ink ribbon winding roller 24.

As shown in FIGS. 3 to 6, a cassette housing 1 for housing a label cassette 21 is provided in the main body case 1.
a is provided. Further, the main body case 1 is provided with a cassette lid 26 that covers the cassette storage section 1a. As is clear from FIGS. 3 and 6, the cassette lid 26 is pushed up in the opening direction by a lid push-up member 27 formed in a "<" shape. The lid push-up member 27 is rotated about a rotation shaft 28 provided on the chassis 10. A coil spring 29 is connected to one end 27a of the lid push-up member 27. The operation knob 30 is operated when the cassette lid 26 is opened.
The hook 26a of the chassis 10 is removed from the hook 10a of the chassis 10.

As shown in FIGS. 7 and 8, a coil spring 29 connected to one end 27a of the lid push-up member 27 is provided with one end 3 of an L-shaped head support member 31.
1a. The print head 20 is fixed to the other end of the head support member 31, and separates the print head 20 from the platen 18 by the elastic force of the coil spring 29. The head support member 31 is rotated about a rotation shaft 32. Further, a coil spring 33 is connected to an intermediate portion 31b between the rotation shaft 32 and the one end 31a, and an urging force for separating the print head 20 from the platen 18 is applied.

Next, the operation of the embodiment configured as described above will be described. As shown in FIGS. 3 and 5, when the cassette lid 26 covers the cassette storage section 1 a, the lid push-up member 27 is pressed by the lower surface of the cassette lid 26. In this state, as shown in FIG. 7, the head support member 31 is rotated against the elastic force of the coil springs 29 and 33, and the print head 20 is in contact with the platen 18. That is, the coil spring 29 is extended by the lid push-up member 27, and the coil spring 33 is extended by the head support member 31. The elastic force of the coil springs 29 and 33 always acts as an urging force for rotating the lid push-up member 27 in the direction of arrow E shown in FIG. However, the lid push-up member 27 cannot be rotated because it is pressed by the cassette lid 26. As shown in FIG. 3, the cassette lid 26 is securely locked by the engagement between the hooks 26a and the hooks 10a, so that the cassette lid 26 does not come off the main body case 1.

Next, the label cassette 21 is inserted into the main body case 1.
It is assumed that the operation knob 30 is operated to release the engagement between the hook portion 26a and the hook portion 10a in order to remove the hook portion 26a from the cassette storage portion 1a. As a result, as shown in FIGS. 4 and 6, the lid push-up member 27 rotates in the direction of arrow A about the rotation shaft 28 by the urging force of the coil springs 29 and 33,
The cassette lid 26 is pushed up. At the same time, as shown in FIG. 8, the head support member 31 is pulled by the elastic force of the coil springs 29 and 33, rotates rightward about the rotation shaft 32, and separates the print head 20 from the platen 18. If the label cassette 21 is removed from the cassette storage section 1a in this state, the print head 20 is separated from the platen 18, so that the print head 20 is not damaged.

[0015]

According to the present invention, when the print medium is stored in the print medium storage section and the cover covers the print medium storage section, the print head moves to the print position on the print medium. On the other hand, when the lid is opened from the print medium storage section , the print head can be quickly and reliably separated from the print position on the print medium by the urging force of the urging means . Soshi
Te, thereby While it is possible to printable state by the print head to the printing medium if Shimere the lid, on the contrary, be removed immediately printed medium open the lid from the to-be-printed medium housing section Can be printed on the medium to be printed.
Do not remove it while keeping it in contact with the head.
In addition, it is possible to prevent the occurrence of damage to the print target medium, etc.
it can.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an external configuration of a label printer device.

FIG. 2 is a side view showing the internal configuration of the label printer.

FIG. 3 is a side view of a main part.

FIG. 4 is a side view showing an internal configuration.

FIG. 5 is a partial cross-sectional view for explaining an operation.

FIG. 6 is a partial cross-sectional view for explaining an operation.

FIG. 7 is a plan view for explaining the operation.

FIG. 8 is a plan view for explaining the operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body case 5 ... Cutter lever 6 ... Lever gear 7, 9 ... Rotating axis 8 ... Cutter gear 10 ... Chassis 12 ... Cutter holder 18 ... Platen 19 ... Platen shaft 20 ... Print head 21 ... Label cassette 22 ... Label 23 ... Ink Ribbon supply roller 24 ... Ink ribbon take-up roller 25 ... Ink ribbon 26 ... Cassette lid 27 ... Lid push-up member 28, 32 ... Rotating shaft 29, 33 ... Coil spring 31 ... Head support member

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body case, a print medium storage section provided in the main body case for detachably storing a print medium, a lid covering the print medium storage section, and a print head comprising the print medium. Urging means for constantly elastically urging in a direction away from the printing position on the print medium stored in the storage section, and the urging means in a state where the lid covers the print medium storage section. The print head is moved to the print position against the urging force, and the print head is separated from the print position by the urging force of the urging means when the lid is opened from the print medium storage section. A print head moving means for causing the printer to move.