JP3458828B2 - Printer with roll paper slack prevention function - Google Patents

Printer with roll paper slack prevention function

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Publication number
JP3458828B2
JP3458828B2 JP2000172627A JP2000172627A JP3458828B2 JP 3458828 B2 JP3458828 B2 JP 3458828B2 JP 2000172627 A JP2000172627 A JP 2000172627A JP 2000172627 A JP2000172627 A JP 2000172627A JP 3458828 B2 JP3458828 B2 JP 3458828B2
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JP
Japan
Prior art keywords
roll paper
roll
printer
paper
loosening prevention
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2000172627A
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Japanese (ja)
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JP2001348147A (en
Inventor
秀昭 高橋
Original Assignee
日本電気株式会社
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Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP2000172627A priority Critical patent/JP3458828B2/en
Publication of JP2001348147A publication Critical patent/JP2001348147A/en
Application granted granted Critical
Publication of JP3458828B2 publication Critical patent/JP3458828B2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

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Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various tickets, such as railway tickets and theater admission tickets, for sequentially feeding out roll paper wound in a roll and performing predetermined printing. Roll paper printers, such as ticket printers and label printers, which issue tickets, and in particular, a roll loosening prevention block that abuts against the side of the roll paper and urges the roll paper with a different pressing force according to the transport speed of the roll paper. With this feature, smooth roll paper transport is realized without applying a continuous load to the roll paper transport means of the printer, and the printing position shift and print shrinkage at the start of transport, and the roll when the transport speed is reduced The present invention relates to a printer having a roll paper roll slack prevention function for effectively preventing paper slack. 2. Description of the Related Art Generally, a ticket issuing printer for issuing various tickets such as a train ticket and a theater admission ticket, and a label printer for printing on a predetermined label attached to a backing paper, etc.
The roll paper in which the printing paper is wound in a roll shape is sequentially fed out and conveyed to perform predetermined printing. FIG.
A general roll paper printer of this type will be described with reference to FIG. FIG. 9 is a schematic perspective view showing the internal structure of a conventional roll paper printer. As shown in FIG. 1, a general roll paper printer includes a roll paper 101 wound in a roll shape and a roll paper holder 102 for rotatably holding the roll paper 101. Then, the roll paper 101 held by the roll paper holder 102 is sequentially fed out by a plurality of transport rollers (not shown), and the print head performs predetermined printing on the fed rolled paper 101. In this type of roll paper printer, a damper mechanism 200 as shown in FIG. 9 is provided as a means for preventing the roll paper from being loosened, and a constant load is applied to the entire transport surface 101a of the roll paper 101. Is added. Generally, in a roll paper printer that feeds out and transports roll paper, even if printing is completed and the transport roller stops, the roll paper does not stop rotating due to inertia (inertia) of the roll paper itself, and the roll paper is loosened. May occur. Then, when printing is resumed in a state where the roll paper has become loose, the load of the roll paper on the transport roller is almost nil until the slack disappears, and a large load due to the roll paper is applied at the moment when the slack disappears. Due to the instantaneous load, a conveyance failure of the roll paper may occur and print shrinkage may occur. For this reason, in a conventional roll paper printer, as shown in FIG.
a damper mechanism 200 that presses the entire roll paper 101 from above, so that a constant load is always applied to the conveying surface 101a of the roll paper 101, whereby the roll paper 101 is always kept in a stretched state, The occurrence of loosening of the winding was prevented. Examples of a conventional roll paper printer having such a damper mechanism include a "paper roll holder in a printer" described in JP-A-59-059483 and a "paper roll holder in a printer" described in JP-A-8-151149. Printers and the like have been proposed. [0006] However, in a roll paper printer using such a damper mechanism, the damper mechanism always applies a constant load to the entire roll paper transport surface. A continuous load is always applied to the transport roller that transports the roll paper. For this reason, the load on the damper mechanism causes the operation failure of the transport roller, and in particular, there is a problem that the load becomes a transport load at the start of the transport operation, causing a shift in print position and a reduction in print size. In addition, such a damper mechanism that presses the entire roll paper conveying surface has a problem in that the size of the damper is increased and the entire printer is also increased in size and complexity. The present invention has been proposed to solve such a problem of the prior art. The present invention has been proposed in which a roll abuts against a side surface of a roll paper and has a different pressing force depending on the transport speed of the roll paper. Equipped with a roll loosening prevention block that urges the paper, realizes smooth roll paper conveyance without applying a continuous load to the roll paper conveyance means of the printer, printing position shift and print shrinkage at the start of conveyance. Roll paper printers, such as ticket printers and label printers, which can effectively prevent roll paper from becoming loose when the transport speed is reduced. It is an object of the present invention to provide a printer having a roll paper roll loosening prevention function suitable for the present invention. [0008] [Means for Solving the Problems] To achieve the above object, a roll cigarettes loosening prevention function printer according to claim 1 of the present invention comprises a roll paper wound in a roll, the roll paper Roll paper holding means for rotatably holding the roll paper, transport means for sequentially feeding out and transporting the roll paper held by the roll paper holding means, and performing predetermined printing on the roll paper fed and transported by the transport means A printer for printing a roll paper, comprising: a printer; and a printer that presses and urges the roll paper in a direction perpendicular to the transport direction by contacting the side of the roll paper held by the roll paper holder. Equipped with a winding loosening prevention block
The stop block moves the roll paper in accordance with the transport speed of the roll paper.
The contact area that contacts the side of the paper
Press and urge the roll paper with different pressing force.
That it is constituted. According to a second aspect of the present invention, in the printer with a roll paper roll loosening prevention function, the roll loosening prevention block includes the roll loosening prevention block.
The roll that is supported and transported along the transport direction of the roll paper
The roll paper is transported by the side of the paper
Rotate in the direction perpendicular to the direction and abut on the side of the roll paper
The contact area is different . The roll paper of the present invention having such a configuration
According to the printer with the winding loosening prevention function, the winding loosening prevention
Can be rotated as the roll paper is transported and rotated.
By arranging it, complicated damper mechanism and stopper
The winding speed can be adjusted according to the roll paper transport speed without providing
Change the contact area of the loosening prevention block to roll paper
Can be varied. This allows the pudding
Only simple structure without increasing the size and complexity of the data
Therefore, the roll paper roll loosening prevention function according to the present invention is realized.
can do. Furthermore, in claim 3 roll cigarettes loosening prevention function printer, wherein the winding looseness preventing blocks,
When the transport speed of the roll paper is low, the roll paper is pressed and urged with a strong pressing force when the transport speed is high, and when the transport speed is high. According to the roll cigarettes loosening prevention function printer of the present invention having such a configuration, abuts against the side surface of the paper roll, provided with a winding loosening prevention block operating in response to the transport speed of the paper roll Therefore, the load on the roll paper can be varied according to the transport speed. [0013] That is, at the start of the transfer operation is to prevent print position offset or printing shrinkage by reducing the load on the roll paper, during deceleration of the conveying speed of the roll paper,
By increasing the load on the roll paper, it is possible to prevent the roll paper from becoming loose due to excessive rotation caused by the inertia (inertia) of the roll paper. As a result, unlike conventional roll paper printers, smooth roll paper transport is achieved without constantly and continuously applying a load to the entire roll paper transport surface, and looseness of the roll paper and print position deviation are achieved. , It is possible to effectively prevent print shrinkage . According to a fourth aspect of the present invention, in the printer with a roll paper roll loosening prevention function, the roll loosening prevention block comes into contact with the vicinity of the outer periphery of the side surface of the roll paper. When the roll paper is fed out to the conveying means to reduce the diameter,
The contact of the winding loosening prevention block is released. According to the printer with the roll paper roll loosening prevention function of the present invention having such a configuration, the roll loosening prevention block is brought into contact with the side surface near the outer periphery of the roll paper, so that the roll paper is fed out. When the diameter is reduced to make the loosening prevention block non-contact, the contact can be released. That is, in the present invention, when the roll paper is fed out and the diameter is reduced to such a degree that the influence of inertia (inertia) is no longer a problem, the load on the roll paper is released, and the roll paper and the conveyance means are not affected. Necessary overload can be prevented, and a smoother roll paper transport operation can be realized. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a printer with a roll paper roll loosening prevention function according to the present invention will be described below with reference to the drawings. [First Embodiment] First, a first embodiment of a printer with a roll paper roll loosening prevention function according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic plan view showing a first embodiment of a printer with a roll paper roll loosening prevention function of the present invention. FIG. 2 is a sectional view taken along line AA shown in FIG. 3 and 4 are cross-sectional views taken along the line BB shown in FIG. 1. FIG. 3 shows a state in which the speed of transporting the roll paper is high, and FIG. 4 shows a state in which the speed is low. FIG. 5 is a schematic perspective view showing the rotation state of the winding loosening prevention block according to the present embodiment.
FIGS. 6A and 6B are schematic front views showing the rotation state of the winding loosening prevention block according to the present embodiment, wherein FIG. 6A shows a state in which the speed of transporting the roll paper is fast, and FIG. As shown in these figures, the printer with a roll paper slack prevention function according to the present embodiment performs predetermined printing by sequentially feeding out roll paper 1 wound in a roll shape provided in the printer. This is a roll paper printer constituting a ticket issuing printer, a label printer, and the like. The roll paper printer according to the present embodiment is provided with a roll paper holder 3 serving as roll paper holding means for rotatably holding the roll paper 1 on the back side of the apparatus in the printer, and at the front side of the apparatus. As shown in FIG. 2, a printing head 2 is provided as printing means for performing predetermined printing on the conveyed roll paper 1. Print head 2 and roll paper holder 3
Between them, a plurality of transport rollers 4, 5, and 6 are provided as transport means for sequentially feeding out and transporting the roll paper 1 held by the roll paper holder 3. The printer according to the present embodiment is provided with a winding slack preventing block 7 which is in contact with one side surface of the roll paper 1 held by the roll paper holder 3, and is arranged facing the winding loose preventing block 7. And a roll paper holding plate 8 which comes into contact with the other side surface of the roll paper 1. The winding loosening prevention block 7 presses the roll paper 1 in a direction perpendicular to the transport direction, that is, toward the roll paper pressing plate 8.
The roll paper 1 urged by the roll loosening prevention block 7 is pressed and held by the roll paper pressing plate 8 to be held. Here, the winding loosening prevention block 7 of this embodiment presses and urges the roll paper 1 with different pressing forces in accordance with the transport speed of the roll paper 1. In general,
In a roll paper printer, even when printing is completed and the transport roller stops, the rotation of the roll paper 1 does not stop due to the inertia (inertia) of the roll paper 1 itself, and the roll paper may become loose. On the other hand, if a constant load is always applied to the roll paper 1 and the transport roller in order to prevent such looseness of the winding, a large load is applied to the transport roller when printing is resumed from the state where the roll paper 1 has been stopped. As a result, this load causes a transfer failure of the roll paper, resulting in a print shift or a print shrinkage. Therefore, in this embodiment, the winding loosening prevention block 7 is strong when the printing process is completed and the transport speed of the roll paper 1 is reduced, and is weak when the transport is started and the transport speed is increased. To press and urge the roll paper 1. More specifically, the winding loosening prevention block 7 presses and urges the roll paper with different pressing forces by changing the contact area in contact with the side surface of the roll paper 1 according to the transport speed of the roll paper 1. I have to do it. As shown in FIGS. 5 and 6, the winding loosening prevention block 7 of the present embodiment is supported by a constant force toward the side surface of the roll paper 1 while being axially supported along the transport direction of the roll paper 1. Is to be energized. The urging of the winding loosening prevention block 7 against the roll paper 1 can be easily realized by disposing an elastic member such as a spring (not shown). Thereby, when the roll paper 1 is conveyed and rotated, as shown in FIGS.
The side of the sliding contact prevents the loosening prevention block 7
Rotates in a direction perpendicular to the transport direction of the roll paper 1, so that the contact area in contact with the side surface of the roll paper 1 is different. More specifically, the winding loosening prevention block 7 is formed in a rectangular cross section as shown in FIGS. 3, 4 and 6, and starts to be conveyed and the conveying speed of the roll paper 1 is high. At times, as shown in FIGS. 3 and 6A, the roll paper 1 is rotated counterclockwise by sliding contact, and the vertex of the block comes into contact with the side surface of the roll paper 1 in a line contact state. On the other hand, when the printing process is completed and the transport speed of the roll paper 1 decreases, the winding loosening prevention block 7 is returned clockwise as shown in FIGS. It comes into contact with the side surface of the paper 1 in a surface contact state. Thereby, the winding loosening prevention block 7 presses and urges the side surface of the roll paper 1 with a weak pressing force when the transport speed of the roll paper 1 is high, and with a strong pressing force when the transport speed is low. As described above, in the present embodiment, the winding loosening prevention block 7 is rotatably provided along with the transport and rotation of the roll paper 1 so that a complicated damper mechanism and a stopper structure are not provided. The load on the roll paper can be varied by changing the contact area of the winding loosening prevention block 7 according to the transport speed of the roll paper 1.
As a result, without increasing the size and complexity of the printer,
The roll paper 1 according to the present embodiment with only a simple structure
Can be realized. Further, as shown in FIG. 1 and FIG. 2, the winding loosening prevention block 7 of this embodiment is formed so as to abut on the vicinity of the outer periphery of the side surface of the roll paper. When the diameter is reduced by being fed by 5, 6, the loosening prevention block 7 comes out of contact and the contact is released. In this way, when the diameter of the roll paper 1 is reduced to such an extent that the influence of inertia (inertia) does not become a problem, the load on the roll paper 1 can be released, and the roll paper 1 and the transport rollers 4, 5, 6 can be released. Can be prevented from being unnecessarily overloaded, and a smoother operation of transporting the roll paper 1 can be realized. Next, the operation of the printer with the roll paper roll loosening prevention function according to the present embodiment having the above-described configuration will be described. Roll paper 1 installed in the printer
As shown in FIG. 2, the print head 2 is fed and conveyed by conveying rollers 4, 5, and 6, and is located on the front side of the apparatus.
Performs a predetermined printing process. When the operation of transporting the roll paper 1 is started, as shown in FIG.
The block rotates in the counterclockwise direction, and the vertex of the block contacts the side surface of the roll paper 1 in a line contact state. In this state, the contact area of the block is small, and the pressing force by the winding loosening prevention block 7 is small.
, And the transport operation is started smoothly without any printing position shift or print shrinkage. When the printing speed of the roll paper 1 is reduced after the printing process by the print head 2 is completed, as shown in FIG. Is returned in the clockwise direction, and the side surface portion of the block comes into contact with the side surface of the roll paper 1 in a surface contact state. In this state, the contact area of the block increases, and the pressing force of the winding loosening prevention block 7 increases, so that the load applied to the roll paper 1 increases, and the inertia (inertia) of the roll paper 1 increases.
Over-rotation caused by the influence of paper and the accompanying roll paper 1
Is prevented from loosening. By repeating the above operation, in the printer of the present embodiment, a smooth transport operation is performed, and a reliable printing process without a printing defect is performed. As described above, according to the printer with the roll paper roll loosening prevention function according to the present embodiment, the roll paper roll prevention function which contacts the side surface of the roll paper 1 and operates according to the transport speed of the roll paper 1. Since the block 7 is provided, the load on the roll paper 1 can be varied according to the transport speed. That is, at the start of the transport operation, the load on the roll paper 1 is reduced, so that the printing position shift and print shrinkage due to the malfunction of the roll paper are prevented. By increasing the load, it is possible to prevent the roll paper 1 from becoming loose due to excessive rotation caused by the inertia (inertia) of the roll paper 1. As a result, in the printer with the function of preventing the looseness of the roll paper of the present embodiment, unlike the conventional roll paper printer, the transport of the roll paper 1 can be smoothly carried out without always continuously applying a load to the entire transport surface of the roll paper 1. In the second embodiment, the roll paper 1 can be effectively prevented from being loosened, the print position shifted, and the print shrunk. [Second Embodiment] Next, referring to FIGS. A second embodiment of the printer with a roll paper roll loosening prevention function of the present invention will be described. FIG. 7 is a cross-sectional view showing a second embodiment of the printer with a roll paper slack prevention function according to the present invention and corresponding to FIG. 3 in the first embodiment, and shows a state in which the roll paper transport speed is high. FIG. 8 is a cross-sectional view corresponding to FIG. 4 in the first embodiment, showing a state in which the transport speed of the roll paper is low. As shown in these figures, the present embodiment
This is a modified embodiment of the first embodiment described above. Instead of the loosening prevention block 7 of the first embodiment, which is rotatably disposed, the loosening prevention block 9 that moves freely toward and away from the roll paper 1. Is provided. Therefore, other components are almost the same as those in the first embodiment. Specifically, as shown in FIGS. 7 and 8, the winding loosening prevention block 9 of the present embodiment is
The roll paper 1 is supported so as to be able to advance and retreat in a direction orthogonal to the transport direction of the roll paper 1. The contact area of the winding loosening prevention block 9 in contact with the roll paper 1 is made different by the advance and retreat operation of the solenoid 10. That is, the solenoid 10 is mounted on the roll paper 1
When the conveyance of the roll paper 1 is started and the conveyance speed is high,
As shown in FIG. 7, the winding loosening prevention block 9 is retracted so as to be in a non-contact state with the roll paper 1 so that the load on the roll paper 1 is eliminated and a smooth transport operation is performed. On the other hand, the transport speed of the roll paper 1 decreases,
When the conveyance is completed, as shown in FIG. 8, the winding loosening prevention block 9 is advanced and pressed against the side of the roll paper 1 to apply a load to the roll paper 1.
The over rotation due to the inertia is surely prevented. As described above, in the printer with the roll paper roll loosening prevention function of the present embodiment, the roll loosening prevention block 9 is
The load on the roll paper can be varied by operating it by the forward / backward driving means such as the solenoid 10 to abut and release the winding loosening prevention block 9 in accordance with the transport speed of the roll paper 1. The function of preventing the roll paper 1 from becoming loose as in the first embodiment described above is realized. In particular, in the present embodiment, at the start of the transporting operation, the winding loosening prevention block 9 does not come into contact with the roll paper 1, so that the load on the roll paper 1 is in a no-load state. This can be more effectively prevented. Further, in this embodiment, the roll paper 1 can be pressed and urged by an arbitrary pressing force only with a simple driving means such as the solenoid 10, so that the printer structure becomes large and complicated. Therefore, the function of preventing the roll paper from loosening can be realized. It should be noted that the printer with the roll paper roll loosening prevention function of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made within the scope of the present invention. For example, the shape of the winding loosening prevention block 7 of the first embodiment is such that the roll paper 1 is rotated by rotation.
Any shape may be used as long as it has a different contact area. The solenoid 10 for driving the winding loosening prevention block 9 forward and backward according to the second embodiment can be any type of driving means as long as it can move the winding loosening prevention block 9 forward or backward with respect to the roll paper 1. It may be. Furthermore, in the above-described first and second embodiments, one winding loosening prevention block is provided only on one side surface of the roll paper, but this may be provided with two or more winding loosening prevention blocks,
It is also possible to provide a roll loosening prevention block on both sides of the roll paper. As described above, according to the printer with the roll paper roll loosening prevention function of the present invention, the printer comes into contact with the side surface of the roll paper and has a different pressing force depending on the transport speed of the roll paper. By providing the winding loosening prevention block for urging the paper, smooth roll paper conveyance can be realized without applying a continuous load to the roll paper conveyance means of the printer. As a result, it is possible to effectively prevent printing position deviation and printing shrinkage at the start of transport, and loosening of roll paper when the transport speed is reduced, and in particular, various tickets such as railway tickets and theater entrance tickets. It is suitable for a roll paper printer such as a ticket printer or a label printer for issuing tickets.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing a first embodiment of a printer with a roll paper roll loosening prevention function of the present invention. FIG. 2 is a sectional view taken along line AA shown in FIG. FIG. 3 is a cross-sectional view taken along the line BB shown in FIG. 1, showing a state in which the transport speed of the roll paper is high. FIG. 4 is a cross-sectional view taken along the line BB shown in FIG. 1, showing a state in which the transport speed of the roll paper is low. FIG. 5 is a schematic perspective view showing a rotating state of the winding loosening prevention block according to the first embodiment of the present invention. FIGS. 6A and 6B are schematic front views illustrating a rotation state of a winding loosening prevention block according to the first embodiment of the present invention, wherein FIG. 6A illustrates a state in which the speed of transporting roll paper is high, and FIG. I have. 7 is a cross-sectional view corresponding to FIG. 3 showing a second embodiment of the printer with a roll paper roll loosening prevention function according to the present invention, and shows a state in which the transport speed of the roll paper is high. FIG. 8 is a cross-sectional view corresponding to FIG. 4 showing a second embodiment of a printer with a roll paper roll loosening prevention function according to the present invention, and shows a state in which the roll paper conveyance speed is low. FIG. 9 is a schematic perspective view showing the internal structure of a conventional general roll paper printer. [Description of Signs] 1 Roll paper 2 Print head 3 Roll paper holder 4 Transport roller 5 Transport roller 6 Transport roller 7 Roll loosening prevention block 8 Roll paper pressing plate 9 Roll loosening prevention block 10 Solenoid

Claims (1)

  1. (57) [Claim 1] Roll paper wound in a roll shape, roll paper holding means for rotatably holding the roll paper, and the roll held by the roll paper holding means A roll paper printer comprising: transport means for sequentially feeding and transporting paper; and printing means for performing predetermined printing on roll paper fed and transported by the transport means. by contacting the side surface of the roll paper that is, pressed in the direction perpendicular to the conveying direction of the paper roll, comprising a winding loosening prevention block for biasing, the winding loosening prevention block, the conveying speed of the paper roll
    The contact area that contacts the side of the roll paper
    By pressing the roll paper with different pressing force
    A printer with a roll paper roll slack prevention function characterized by pressure and bias . 2. The roll loosening prevention block is pivotally supported in the direction of transport of the roll paper, and rotates in a direction perpendicular to the transport direction of the roll paper when the side surface of the transported roll paper comes into sliding contact. 2. The printer with a roll paper roll loosening prevention function according to claim 1 , wherein a contact area contacting the side of the roll paper is made different. 3. The roll paper roll according to claim 2 , wherein the loosening prevention block presses and urges the roll paper with a strong pressing force when the transport speed of the roll paper is low and a weak pressing force when the transport speed is high. Printer with slack prevention function. 4. The roll loosening prevention block is released from contact with the vicinity of the outer periphery of the side surface of the roll paper so that the roll paper is fed out to the transporting means and reduced in diameter. Claims to be made
    A printer with a roll paper roll loosening prevention function according to 1, 2, or 3 .
JP2000172627A 2000-06-08 2000-06-08 Printer with roll paper slack prevention function Expired - Fee Related JP3458828B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000172627A JP3458828B2 (en) 2000-06-08 2000-06-08 Printer with roll paper slack prevention function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000172627A JP3458828B2 (en) 2000-06-08 2000-06-08 Printer with roll paper slack prevention function

Publications (2)

Publication Number Publication Date
JP2001348147A JP2001348147A (en) 2001-12-18
JP3458828B2 true JP3458828B2 (en) 2003-10-20

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Country Status (1)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005306535A (en) * 2004-04-20 2005-11-04 Star Micronics Co Ltd Rolled sheet retaining mechanism and printer
WO2006059671A1 (en) * 2004-12-02 2006-06-08 Brother Kogyo Kabushiki Kaisha Tape holding body and label creation device
JP5834593B2 (en) 2011-07-28 2015-12-24 セイコーエプソン株式会社 Conveying apparatus, printing apparatus, and conveying method

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