JP2010064300A - Printing medium storing part for printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing medium storing part for a printer which can stably deliver a drop-in type rolled paper with a simple constitution. <P>SOLUTION: The printing medium storing part 2 for the printer 1 stores a printing medium 31 wound in a roll-like shape in a semi-circle arc-shaped storing part body 3. Printing is applied on a printing face of the printing medium 31 by a printing part 33, while the printing medium 31 is delivered from the storing body 3. A stopper roller 5 for preventing the printing medium from running on over the width direction of the printing medium is freely rotatably provided on the front end part 4a in the delivering direction of the printing medium of the semi-circle arc-shaped storing part body 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention particularly relates to a print medium storage unit of a printer that smoothly feeds a drop-in type (throw-in type) print medium (roll paper).

Conventionally, roll paper (printing medium) wound in a roll shape is stored in a semi-arc-shaped roll paper storage unit, and is fed from the roll paper storage unit to the printing surface of the roll paper by a printer unit (printing unit). A terminal device (printer) that performs printing is known (see, for example, FIG. 2 of Patent Document 1).
According to this terminal device, the base of the roll paper cover provided at the upper rear end of the roll storage unit is rotatably supported, the roll paper is supported by the roll paper cover with the roll paper cover opened, and then the roll By closing the paper cover, the roll paper supported by the roll paper cover rolls and is stored in the roll paper storage unit, and the roll paper is stored in the roll paper storage unit simply by closing the roll paper cover. The terminal device (printer) adopts a roll paper (print medium) of a so-called “drop-in type” or “drop-in type”.
A state in which a drop-in type (drop-in type) roll paper is stored in the roll paper storage unit in Patent Document 1 will be described with reference to FIGS.
FIG. 5 shows a state in which a roll paper 31 a called a “front winding” having a printing surface formed on the surface side of the roll paper 31 that is a printing medium is stored in a semicircular arc-shaped roll paper storage unit 30. The roll paper 31 is fed from the roll paper storage unit 30 to the printer unit (printing unit) 33 through the roll paper insertion port 32, and the roll paper (printing medium) 31 is sandwiched between the print head 34 and the platen roller 35. The roll paper 31 is discharged to the roll paper discharge port 36 while printing desired information with the print head 34.
On the other hand, FIG. 7 shows a state in which a roll paper 31 b called a “back roll”, in which a printing surface is formed on the inner surface side of the roll paper (printing medium) 31, is stored in the semicircular roll paper storage unit 30. The roll paper 31 is fed from the roll paper storage section 30 to the printer unit 33 through the roll paper insertion port 32, and the roll paper 31 is discharged to the roll paper discharge port 36 while desired information is printed by the printer unit 33. It is supposed to be.
However, the drop-in type (drop-in type) in which the roll paper 31 is simply dropped has a problem that it is easily pulled in the feeding direction because it is not locked to a housing (not shown). That is, since the roll paper 31 that is first used has a large roll diameter, the roll paper 31 is pressed by a roll paper cover (not shown) and is heavy because of its mass, so that it stays near the bottom surface portion 37 of the roll paper storage unit 30. When the roll diameter is reduced as the use progresses, the roll paper cover (not shown) is no longer pressed by the roll paper cover, and the weight is light enough to withstand the pulling force in the feeding direction. There was a problem that it was easily pulled.
FIG. 6 is a schematic explanatory view showing a state in which the front roll paper 31a is slid on the inclined surface 38 of the semicircular roll paper storage unit 30 and pulled toward the roll paper insertion port 32, and FIG. It is a schematic explanatory drawing which shows the state by which the roll paper 31b of back winding is pulled the slope part 38 to the roll paper insertion port 32 side.

JP-A-5-294032

The present invention has been made paying attention to the above-described problems, and provides a print medium storage unit for a printer that enables stable feeding of a drop-in type roll paper with a simple configuration. This is the issue.

The print medium storage unit of the printer according to the present invention stores the print medium wound in a roll shape in a semicircular arc storage unit main body, and prints on the printing surface of the print medium at the print unit while being fed out from the storage unit main body. A printing medium storage portion of a printer for performing printing, and a stopper roller for preventing the printing medium from running over the width direction of the printing medium at a front end of the semicircular storage body main body in the printing medium feeding direction. It is characterized by being provided in.
In addition, the storage unit main body can be formed such that the front end in the feed-out direction where the stopper roller is provided is formed higher in the height direction than the end behind the opposite feed-out direction.

The print medium storage unit of the printer of the present invention stores the print medium wound in a roll shape in a semicircular arc storage unit body, and prints on the print surface of the print medium at the print unit while being fed out from the storage unit body. Since a stopper roller for preventing the print medium from running up is provided at the front end of the storage medium body of the print medium storage part of the printer to be applied in the width direction of the print medium. As the printing medium becomes smaller, the printing medium comes into contact with the stopper roller 5 so that it can be smoothly fed out with the assistance of rotation of the stopper roller, and the stopper roller plays a role in preventing climbing, so that the movement in the feeding direction is suppressed. There is.
Further, if the storage unit main body is formed such that the front end in the feed-out direction where the stopper roller is provided is higher in the height direction than the opposite end in the feed-out direction, the inclined part reaches the end in the feed-out direction front Is formed long, and the recording medium slides on the inclined portion, so that the movement in the feeding direction is suppressed.

Hereinafter, a first embodiment of the present invention will be described with reference to FIG. 1 and FIG.
In the following description, the same parts as those in the prior art are designated by the same reference numerals, and detailed description thereof is omitted.
FIG. 1 and FIG. 2 are schematic explanatory views showing the print medium storage unit 2 of the printer 1. The printer 1 includes a print unit 33 having a print head 34 and a platen roller 35, and roll paper as “print medium”. And a storage unit body 3 as a “roll paper storage unit” for storing 31 by dropping. For convenience of explanation, FIG. 1 and FIG. 2 will be described using an example in which a front roll paper 31a is used.
The storage unit main body 3 has a semicircular arc shape, and a stopper roller 5 is rotatably provided at a semicircular arc end portion 4 a in the feeding direction of the roll paper (print medium) 31. Further, the end portion 4a on which the stopper roller 5 is formed is formed at a higher position in the height direction than the end portion 4b facing each other with the accommodated roll paper 31 in between. Therefore, the inclined surface 6a below the end 4a on the side where the roll paper 31a is fed is formed longer than the inclined surface below the facing end 4b. FIG. 1 shows a state in which a large-diameter roll paper 31a, which has been used for the first time, is dropped into the storage unit body 3.

Next, the operation state will be mainly described with reference to FIG.
FIG. 2 is a schematic explanatory view corresponding to FIG. 1 showing a state in which the roll diameter has been reduced as the use of the roll paper 31a has progressed. When the roll diameter is reduced, the roll paper 31 a comes into contact with the stopper roller 5 and is smoothly fed out to the printing unit 33 side with the assistance of rotation of the stopper roller 5.
Furthermore, since the semicircular inclined surface 6a on the end 4a side where the stopper roller 5 is formed is formed longer than the inclined surface of the opposite end 4b, the downward drop is large, and the mass is small. Even if it is lightened and pulled in the feeding direction, the stopper roller 5 provided at the end portion 4a in the feeding direction plays a role in preventing the roll paper 3 from climbing, so that movement in the feeding direction is suppressed. is there.

Next, a second embodiment will be described based on FIG. 3 and FIG.
In the following description, the same parts as those in the previous embodiment are designated by the same reference numerals, and detailed description thereof is omitted.
FIG. 3 is a schematic explanatory view corresponding to FIG. 1 showing a state in which a large-diameter roll paper 31b, which has been used for the first time, has been dropped into the storage unit main body 13 of the print medium storage unit 2 of the printer 1. FIG.
The semicircular arc-shaped storage unit body 13 is provided with a stopper roller 5 rotatably at an end 14a in the feeding direction of the roll paper 31b. Further, the end portion 14a on which the stopper roller 5 is formed is formed at a higher position in the height direction than the end portion 14b that faces the roll paper 31b that is stored, and the end portion on which the stopper roller 5 is provided. The inclined surface 16a formed toward 14a is formed in a state where it is warped toward the rear end portion 14b, which is the opposite side to the roll paper 31b feeding direction. Therefore, when the roll paper 31b is fed out to the printing unit 33 side in a large diameter state, the roll paper 31b is in a so-called “turning” state in which the direction is changed, and is always applied to the stopper roller 5 provided at the end portion 14a. Since it is drawn out by the rotation of the stopper roller 5 in contact, it is drawn out smoothly.

Next, the operation state will be described with reference to FIG.
FIG. 4 is a schematic explanatory view corresponding to FIG. 2 showing a state in which the roll diameter has been reduced as the use of the roll paper 31b has progressed. When the roll diameter is reduced and the mass is reduced, the roll paper 31b is easily pulled in the feeding direction. However, the inclined surface 16a leading to the end portion 14a is formed by curving, and the roll paper 31b is always in contact with the stopper roller 5 provided on the end portion 14a, so that smooth feeding can be achieved, and The stopper roller 5 plays a role in preventing the roll paper 31b from climbing, and the roll paper 31b slides on the inclined surface 16a that is warped for a long time, so that the movement in the feeding direction is suppressed.
About another structure, an effect | action, and an effect, detailed description is abbreviate | omitted about the same as previous embodiment.

  It should be noted that the configuration and operation of the above-described embodiment are examples, and it goes without saying that they can be changed as appropriate without departing from the spirit of the present invention.

It is a schematic explanatory drawing which shows the state which dropped the printing medium of the large diameter front winding in the printing medium storage part of the printer which concerns on this invention. FIG. 6 is a schematic explanatory view showing a state in which the print medium has become a small diameter as the use proceeds. It is a schematic explanatory drawing which shows the state which dropped the printing medium of the large diameter back winding similarly. FIG. 6 is a schematic explanatory view showing a state in which the print medium has become a small diameter as the use proceeds. It is a schematic explanatory drawing which shows the state which dropped the large diameter front winding printing medium in the printing medium storage part of the conventional printer. FIG. 6 is a schematic explanatory view showing a state in which the print medium has become a small diameter as the use proceeds. It is a schematic explanatory drawing which shows the state which dropped the printing medium of the large diameter back winding similarly. FIG. 6 is a schematic explanatory view showing a state in which the print medium has become a small diameter as the use proceeds.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printer 2 Printing medium storage part 3 Storage part main body 4a End part 4b End part 5 Stopper roller 6a Inclined surface 13 Storage part main body 14a End part 14b End part 16a Inclined surface 30 Roll paper storage part 31 Roll paper 31a Front winding 31b Back winding 32 Roll paper insertion port 33 Printing section (printer unit)
34 Print Head 35 Platen Roller 36 Roll Paper Discharge Port 37 Bottom Surface 38 Inclined

Claims (2)

A print medium storage unit of a printer that stores a print medium wound in a roll shape in a semicircular arc storage unit main body, and performs printing on the print surface of the print medium at the printing unit while being fed out from the storage unit main body,
A printing medium for a printer, wherein a stopper roller for preventing the printing medium from climbing is rotatably provided at the front end of the semicircular arc-shaped storage unit body in the feeding direction of the printing medium. Storage part. The said storage part main body is formed higher in the height direction than the end part of the feed direction front where the said stopper roller was provided, and the end part of the feed direction back which opposes. Print media storage part of the printer.

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