WO2021065471A1

WO2021065471A1 - Printing cassette

Info

Publication number: WO2021065471A1
Application number: PCT/JP2020/034870
Authority: WO
Inventors: 信次鵜飼
Original assignee: ブラザー工業株式会社
Priority date: 2019-09-30
Filing date: 2020-09-15
Publication date: 2021-04-08
Also published as: JP7283333B2; JP2021053891A

Abstract

Provided is a printing cassette in which a portion to be pressed can be arranged outside a corner portion while suppressing the rotational resistance of a rotating body in the cassette. The present disclosure relates to a printing cassette comprising: a portion to be pressed that receives a pressing force from the outside; a plurality of gears; a gear shaft that is inserted through one first gear among the plurality of gears and extends in a first direction parallel to the rotation axis of the first gear; and a first support wall that is arranged on the side opposite that of the portion to be pressed for the first gear in the first direction and regulates the movement of the gear shaft to the side opposite that of the portion to be pressed. The gear shaft overlaps with at least a part of the portion to be pressed in the first direction. The first gear has a sliding portion on which the inserted gear shaft slides. The length of the gear shaft in the first direction is larger than the length of the sliding portion of the first gear in the first direction.

Description

Printing cassette

This disclosure relates to a printing cassette.

In a device that prints on tape, the tape is replaced and supplied by attaching and detaching the cassette containing the tape to and from the main body. In such a device, for example, a pressing portion provided on the lid of the main body presses the pressed portions provided on a plurality of corners of the cassette, so that the cassette is attached to the main body (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-56263

Depending on the shape of the cassette described above, it may not be possible to provide a pressed portion at the corner. If the pressed portion is arranged other than the corner portion of the case, the case of the cassette may be deformed due to the pressing force of the pressing portion of the main body. As a result, the case may come into contact with a rotating body such as a gear, which is a structure inside the cassette, and resistance may occur in the rotation of the rotating body.

One aspect of the present disclosure is to provide a printing cassette in which a pressed portion can be arranged in addition to the corner portion while suppressing the rotational resistance of the rotating body in the cassette.

One aspect of the present disclosure is to be inserted into a pressed portion that receives a pressing force from the outside, a plurality of gears, and the first gear of one of the plurality of gears, and is parallel to the rotation axis of the first gear. A first support that is arranged on the side opposite to the pressed portion of the first gear in the first direction and the gear shaft extending in the first direction, and regulates the movement of the gear shaft to the opposite side to the pressed portion. A printing cassette with a wall.

The gear shaft overlaps at least a part of the pressed portion in the first direction. The first gear has a sliding portion on which the inserted gear shaft slides. The length of the gear shaft in the first direction is larger than the length of the sliding portion of the first gear in the first direction.

Another aspect of the present disclosure is that the pressed portion that receives the pressing force from the outside, the plurality of gears, and the first gear of one of the plurality of gears are inserted and parallel to the rotation axis of the first gear. The first gear shaft extending in the first direction is arranged on the opposite side of the pressed portion of the first gear in the first direction, and the movement of the gear shaft to the opposite side of the pressed portion is restricted. A printing cassette comprising a support wall.

The gear shaft overlaps at least a part of the pressed portion in the first direction. The first gear has two surfaces perpendicular to the first direction, and the gear shaft penetrates at least the surface of the two surfaces of the first gear that is close to the first support wall.

According to these configurations, the movement of the pressed portion pressed from the outside in the first direction is regulated by the gear shaft and the first support wall. Therefore, the deformation of the case of the printing cassette is suppressed before the first gear comes into contact with the internal structure of the printing cassette. As a result, the pressed portion can be arranged in addition to the corner portion while suppressing the rotational resistance of the rotating body (that is, the first gear) in the printing cassette.

FIG. 1A is a schematic perspective view showing a state in which the lid of the printing apparatus main body is opened in the printing apparatus according to the embodiment, and FIG. 1B shows a state in which the lid of the printing apparatus main body is closed in the printing apparatus according to the embodiment. It is a schematic perspective view, and FIG. 1C is a schematic partial cross-sectional view taken along the line IC-IC in FIG. 1B. 2A, 2B and 2C are schematic perspective views showing a state in which the printing cassette is removed from the main body of the printing apparatus in the printing apparatus according to the embodiment. 3A, 3B and 3C are schematic perspective views of a printing cassette in the printing apparatus of FIG. 1A. 4A is a schematic front view of the printing cassette of FIG. 3A, and FIG. 4B is a schematic side view of the printing cassette of FIG. 3A. FIG. 5 is a schematic exploded perspective view of the printing cassette of FIG. 3A. 6A is a schematic perspective view of a first frame portion in the printing cassette of FIG. 3A, and FIG. 6B is a schematic perspective view of a second frame portion of the printing cassette of FIG. 3A. FIG. 7 is a schematic perspective view showing a state in which the first case portion of the printing cassette of FIG. 3C is removed. 8A is a schematic cross-sectional view taken along the line VIIIA-VIIIA of FIG. 4A, and FIG. 8B is a schematic cross-sectional view taken along the line VIIIB-VIIIB of FIG. 4B. FIG. 9 is a schematic view illustrating the paths of the printing tape and the ink ribbon in the printing cassette of FIG. 3A. 10A is a schematic cross-sectional view taken along the line XA-XA of FIG. 3C, FIG. 10B is a schematic cross-sectional view taken along the line XB-XB of FIG. 3C, and FIG. 10C is a schematic cross-sectional view taken along the line XB-XB of FIG. 3C. It is a schematic cross-sectional view taken along the line XC, and FIG. 10D is a schematic cross-sectional view taken along the line XD-XD of FIG. 3C. FIG. 11 is a schematic plan view of the printing apparatus main body in the printing apparatus of FIG. 1A. FIG. 12 is a schematic view showing an engaged state between the output gear and the platen gear in the printing apparatus of FIG. 1A. 13A and 13B are schematic perspective views showing a state in which the printing cassette is removed from the main body of the printing apparatus in the printing apparatus according to the embodiment different from FIG. 1A. FIG. 14 is a schematic exploded perspective view of the printing cassette in the printing apparatus of FIG. 13A. FIG. 15 is a schematic view showing an engaged state between the output gear and the platen gear in the printing apparatus of FIG. 13A. FIG. 16 is a schematic plan view of the printing apparatus main body in the printing apparatus of FIG. 13A. FIG. 17A is a schematic plan view of an idle gear of a printing apparatus according to an embodiment different from that of FIG. 1A, and FIG. 17B is a schematic cross-sectional view taken along the line XVIIB-XVIIB of FIG. 17A.

[1. First Embodiment]
[1-1. Constitution]
The printing apparatus 1 shown in FIGS. 1A and 1B includes a printing cassette 10 and a printing apparatus main body 100. The printing device 1 is a device that prints on a tape-shaped printing medium.

In the present embodiment, the axial direction of the output gear 18 of the printing cassette 10 and the axial direction of the platen gear 104 of the printing apparatus main body 100 are the vertical directions, and the output gear 18 and the input spool 16 are aligned in the direction perpendicular to the vertical direction. The direction (that is, the direction in which the platen gear 104 and the drive shaft 105 are aligned) is the front-rear direction, and the direction perpendicular to both the vertical direction and the front-rear direction is the left-right direction.

<Printing device body>
The printing apparatus main body 100 includes a housing 110, a lid 111, and a pressing member 112 provided on the lid 111.

The lid 111 is attached to the housing 110 so as to be swingable. The printing cassette 10 is arranged in the housing 110 with the lid 111 shown in FIG. 1A open. With the printing cassette 10 arranged in the housing 110, the upper end of the printing cassette 10, that is, the upper end of the pressed portion 50 described later in the present embodiment is located below the upper end of the housing 110.

With the lid 111 shown in FIG. 1B closed, the pressing member 112 presses the printing cassette 10 downward in the housing 110. In the present embodiment, as shown in FIG. 1B, the printing cassette 10 is arranged in the housing 110 and the lid 111 is closed, and the printing cassette 10 is mounted on the printing apparatus main body 100. And.

In the present embodiment, the pressing member 112 is a cylindrical member protruding from the inner surface of the lid 111. As shown in FIG. 1C, with the lid 111 closed, the pressing member 112 presses the pressed portion 50 downward by the tip of the pressing member 112 abutting against the pressed portion 50 of the printing cassette 10.

Further, as shown in FIGS. 2A, 2B, and 2C, the printing apparatus main body 100 includes a cassette insertion portion 101, a printing head 102, a platen roller 103, a platen gear 104, and a drive shaft 105.

(Cassette insertion part)
The cassette insertion portion 101 is a recess in which the printing cassette 10 is arranged. The cassette insertion unit 101 has a positioning function for the printing cassette 10. The cassette insertion portion 101 is provided in the housing 110.

(Print head)
The print head 102 is arranged inside the cassette insertion portion 101. The print head 102 has a plurality of heat generating elements whose heat generation is individually controlled.

(Platen roller)
The rotation axis L1 of the platen roller 103 is parallel to the vertical direction. The platen roller 103 is arranged in the vicinity of the print head 102 inside the cassette insertion portion 101. The platen roller 103 can swing in a direction toward or away from the print head 102.

(Platen gear)
The platen gear 104 is connected to the platen roller 103. In the present embodiment, the rotation axis L2 of the platen gear 104 is arranged on the same line as the rotation axis L1 of the platen roller 103. The platen gear 104 can swing together with the platen roller 103.

(Drive shaft)
The drive shaft 105 is inserted into the input spool 16. The drive shaft 105 rotates the input spool 16.

The drive shaft 105 is arranged inside the cassette insertion portion 101. The rotation axis L3 of the drive shaft 105 is parallel to the vertical direction. The drive shaft 105 rotates about a rotation axis L3 by a drive source (for example, a motor) (not shown).

<Printing cassette>
The print cassette 10 stores a print medium. The printing cassette 10 can be attached to and detached from the printing apparatus main body 100. By exchanging the printing cassette 10, the printing medium can be replenished and the type (for example, color, material, etc.) of the printing medium can be changed.

As shown in FIGS. 3A, 3B, 3C and 4A, 4B, the printing cassette 10 includes a case 35 for storing the printing tape 11A, the ink ribbon 14A, and the like, and a pressed portion 50. The outer shape of the printing cassette 10 (that is, the shape of the case 35) is a rectangular parallelepiped having a side parallel to the vertical direction, a side parallel to the front-rear direction, and a side parallel to the left-right direction. The case 35 has a first case portion 31, a first frame portion 32, a second frame portion 33, and a second case portion 34.

The pressed portion 50 is a portion that receives pressing force from the pressing member 112 of the printing apparatus main body 100 in a state of being attached to the printing apparatus main body 100. The pressed portion 50 is exposed from the opening 31B provided on the upper surface of the case 35.

As shown in FIG. 5, the printing cassette 10 includes a first roll 11, a first supply spool 12,

spacer films

13A and 13B, a second roll 14, a second supply spool 15, and an input spool 16. A clutch spring holder 17, an output gear 18, an input gear 19, and an idle gear 20 are provided.

(1st roll)
The first roll 11 is a printing tape 11A on which printing is performed wound around a first supply spool 12. The first roll 11 has a cylindrical shape in which the printing tape 11A is wound around an axis parallel to the vertical direction, and a hollow portion is defined by the inner peripheral surface of the wound printing tape 11A.

The first roll 11 is provided with a first supply spool 12 in a hollow portion defined by the printing tape 11A. Printing is performed on the surface of the printing tape 11A by the printing head 102 of the printing apparatus main body 100 and the ink ribbon 14A.

Two

spacer films

13A and 13B are arranged on the outside of the first roll 11 in the vertical direction so as to sandwich the first roll 11. The

spacer films

13A and 13B are arranged between the first roll 11 and the first case portion 31 and between the first roll 11 and the first frame portion 32.

(1st supply spool)
The first supply spool 12 is rotatable around the rotation axis L4. The first supply spool 12 rotates with the transfer of the printing tape 11A by the platen roller 103 of the printing apparatus main body 100 to supply the printing tape 11A to the printing head 102.

(2nd roll)
The second roll 14 is formed by winding the ink ribbon 14A used for printing the printing tape 11A around the second supply spool 15.

The ink ribbon 14A is overlapped with the printing tape 11A at the head opening 33B and is used for printing by the printing head 102. The ink ribbon 14A used for printing is wound around the input spool 16. Further, the second roll 14 is subjected to rotational resistance by the clutch spring held by the clutch spring holder 17. At least a part of the second roll 14 is arranged at a position overlapping with the first roll 11 in the vertical direction.

(2nd supply spool)
The second supply spool 15 is rotatable around the rotation axis L5. The rotation axis L5 of the second supply spool 15 is parallel to the rotation axis L4 of the first supply spool 12, that is, parallel to the vertical direction.

The second supply spool 15 supplies the ink ribbon 14A to the print head 102 by rotating along with the winding of the ink ribbon 14A by the input spool 16.

(Input spool)
The input spool 16 is rotatable around the rotation axis L6. The rotation axis L6 of the input spool 16 is parallel to the rotation axis L5 of the second supply spool 15.

The input spool 16 has a cylindrical shape whose hollow portion is defined by the inner peripheral surface 16A. Spline teeth 16B are provided on the inner peripheral surface 16A of the input spool 16. The spline teeth 16B engage with the drive shaft 105 of the printing apparatus main body 100. The input spool 16 is rotated by the drive shaft 105.

(Output gear)
The output gear 18 is a single gear that outputs a driving force for conveying the printing tape 11A to the outside.

Specifically, the output gear 18 outputs a driving force to the platen gear 104 of the printing apparatus main body 100. The rotation axis L7 of the output gear 18 is parallel to the rotation axis L5 of the second supply spool 15. The output gear 18 overlaps the cover portion 32B in the vertical direction.

A part of the output gear 18 is exposed at the head opening 33B. The output gear 18 engages with the platen gear 104 at the head opening 33B with the printing cassette 10 mounted on the printing apparatus main body 100.

The second supply spool 15, the output gear 18, and the first roll 11 are arranged side by side in the vertical direction in the order of the second supply spool 15, the output gear 18, and the first roll 11. That is, the output gear 18 is located between the second supply spool 15 and the first roll 11 in the vertical direction.

(Input gear)
The input gear 19 indirectly engages with the output gear 18 via the idle gear 20 and transmits the driving force input from the printing device main body 100 to the output gear 18.

The input gear 19 has a gear 19A and a cylindrical spool 19B fixed to a surface perpendicular to the rotation axis of the gear 19A and having spline teeth on the inner peripheral surface. The gear 19A rotates integrally with the spool 19B by the driving force input to the spool 19B.

The input gear 19 is arranged so that the rotation axis L8 of the input gear 19 (that is, the rotation axis of the gear 19A and the rotation axis of the spool 19B) is on the same line as the rotation axis L6 of the input spool 16. There is. A part of the spool 19B is inserted into the input spool 16. The input spool 16, a part of the input gear 19 (that is, the gear 19A), and the first roll 11 are arranged in the vertical direction in the order of the input spool 16, a part of the input gear 19 (that is, the gear 19A), and the first roll 11. They are arranged side by side.

The rotation axis L8 of the input gear 19 overlaps with the hollow portion of the input spool 16 in the vertical direction. Therefore, the drive shaft 105 is simultaneously inserted into the input spool 16 and the spool 19B of the input gear 19. As a result, the input gear 19 is not directly connected to the input spool 16, but is rotated by a drive source (that is, a drive shaft 105) common to the input spool 16.

(Idle gear)
The idle gear 20 engages the input gear 19 and the output gear 18. The idle gear 20 transmits the driving force input to the input gear 19 to the output gear 18.

The idle gear 20 is a step gear in which a large gear 20A engaged with the input gear 19 and a small gear 20B engaged with the output gear 18 are arranged coaxially. The small gear 20B has a smaller diameter than the large gear 20A.

Further, the small gear 20B is arranged at a position (that is, above) closer to the first roll 11 than the large gear 20A in the vertical direction. The idle gear 20 constitutes a reduction mechanism that reduces the rotational speed of the driving force input to the input gear 19.

(Case)
The first case portion 31 constitutes the upper end portion of the printing cassette 10. The first frame portion 32 is arranged below the first case portion 31 and is connected to the first case portion 31 in the vertical direction. The second frame portion 33 is arranged below the first frame portion 32 and is connected to the first frame portion 32 in the vertical direction. The second case portion 34 constitutes the lower end portion of the printing cassette 10. The second case portion 34 is connected to the second frame portion 33 in the vertical direction.

The first case portion 31 and the first frame portion 32 house the first roll 11. That is, the first roll 11 is arranged in the space surrounded by the first case portion 31 and the first frame portion 32.

The second case portion 34 and the second frame portion 33 house the second roll 14, the second supply spool 15, and the input spool 16. That is, the second roll 14, the second supply spool 15, and the input spool 16 are arranged in a space surrounded by the second case portion 34 and the second frame portion 33.

A part of the output gear 18, the input gear 19, and the idle gear 20 are arranged in a space surrounded by the first frame portion 32 and the second frame portion 33.

As shown in FIG. 3C, the first case portion 31 has a surface 31A and an opening 31B. The surface 31A is vertical in the vertical direction. The opening 31B is provided on the surface 31A. The pressed portion 50 penetrates the first case portion 31 in the vertical direction.

As shown in FIGS. 5 and 6A, the first frame portion 32 includes a first side wall portion 32A, a cover portion 32B, a first guide 32C, a first gear shaft 32D, a second gear shaft 32E, and a third. It has a gear shaft 32F, a connecting portion 32G, and a second support wall 32H.

The first side wall 32A constitutes a side surface parallel to the vertical direction of the printing cassette 10. The cover portion 32B is a portion having a surface perpendicular to the vertical direction. The cover portion 32B is arranged at a position where it overlaps with the output gear 18 in the vertical direction. In the present embodiment, the cover portion 32B is arranged at the right front corner portion of the first frame portion 32.

The first gear shaft 32D rotatably supports the output gear 18. The second gear shaft 32E rotatably supports the input gear 19. The third gear shaft 32F rotatably supports the idle gear 20. The first gear shaft 32D, the second gear shaft 32E, and the third gear shaft 32F each project downward from the lower surface of the second support wall 32H.

The connecting portion 32G connects the third gear shaft 32F and the pressed portion 50 in the vertical direction. In the present embodiment, the connecting portion 32G, the third gear shaft 32F, and the pressed portion 50 are integrally formed.

The second support wall 32H is arranged between the first case portion 31 and the first support wall 33E of the second frame portion 33 in the vertical direction. The second support wall 32H has a support surface 32I that supports the first roll 11 from the idle gear 20 side (that is, below) in the vertical direction.

As shown in FIG. 7, the first guide 32C is a portion around which the printing tape 11A drawn from the first roll 11 is wound. The first guide 32C has a plurality of plate-shaped ribs arranged so as to be isolated along the circumferential direction of the first roll 11. The plurality of ribs project in the radial direction of the first roll 11, and the amount of protrusion (that is, the plate width) increases toward the lower side.

As shown in FIGS. 5 and 6B, the second frame portion 33 includes a second side wall 33A, a head opening 33B, a discharge port 33C, a second guide 33D, a first support wall 33E, and a regulation portion 33F. Have.

The second side wall 33A constitutes a side surface parallel to the vertical direction of the printing cassette 10. The head opening 33B is a portion cut out from a part of the second side wall 33A. The head opening 33B is a space in which the print head 102 is arranged by inserting the print head 102 from below with the print cassette 10 mounted on the printing apparatus main body 100. The head opening 33B opens below the printing cassette 10.

The second guide 33D is a portion around which the printing tape 11A that has passed through the first guide 32C is wound. Like the first guide 32C, the second guide 33D has a plurality of plate-shaped ribs arranged so as to be isolated along the circumferential direction of the second roll 14. The plurality of ribs project in the radial direction of the second roll 14, and the amount of protrusion (that is, the plate width) decreases toward the lower side.

The first support wall 33E is arranged on the side (that is, downward) opposite to the pressed portion 50 of the idle gear 20 in the vertical direction. Further, the second case portion 34 is arranged on the side opposite to the idle gear 20 with respect to the first support wall 33E in the vertical direction.

The first support wall 33E regulates the downward movement of the third gear shaft 32F. The first support wall 33E has a convex portion 33G as shown in FIG. 6B. The convex portion 33G is a cross-shaped ridge protruding upward.

The lower end of the third gear shaft 32F is arranged slightly isolated from the convex portion 33G, but when a downward force is applied to the third gear shaft 32F, the third gear shaft 32F hits the convex portion 33G. Get in touch. That is, the first support wall 33E supports the third gear shaft 32F from below when a downward force is applied to the third gear shaft 32F, and restricts the downward movement of the third gear shaft 32F.

As shown in FIG. 5, the regulation unit 33F is arranged between the first support wall 33E and the second case unit 34 in the vertical direction. The regulating portion 33F is provided at a position where it overlaps with the third gear shaft 32F in the vertical direction. When a downward force is applied to the first support wall 33E, the lower end of the regulation portion 33F comes into contact with the second case portion 34, so that the regulation portion 33F approaches the second case portion 34 of the first support wall 33E. Regulate (ie downward) deflection. The regulation unit 33F of the present embodiment is a cylinder that protrudes downward from the first support wall 33E and whose central axis is parallel to the vertical direction.

<Positional relationship of 3rd gear shaft>
The third gear shaft 32F is inserted through the idle gear 20 and extends in the vertical direction parallel to the rotation axis L9 of the idle gear 20.

As shown in FIGS. 8A and 8B, the idle gear 20 has a sliding portion 20C on which the inserted third gear shaft 32F slides, and a first surface 20D and a second surface 20E perpendicular to the vertical direction, respectively. .. The first surface 20D is the lower surface of the large gear 20A. The second surface 20E is the upper surface of the small gear 20B, and is a surface farther from the first support wall 33E than the first surface 20D.

The length D1 of the third gear shaft 32F in the vertical direction is larger than the length D2 of the sliding portion 20C of the idle gear 20 in the vertical direction. The vertical length of the third gear shaft 32F means the distance from the base of the third gear shaft 32F (that is, the connecting portion with the second support wall 32H) to the tip of the third gear shaft 32F.

Further, the third gear shaft 32F penetrates both the first surface 20D and the second surface 20E of the idle gear 20. That is, the third gear shaft 32F projects below the second surface 20E of the idle gear 20.

The first roll 11 is arranged at a position isolated from the first support wall 33E on the pressed portion 50 side (that is, a position closer to the pressed portion 50 than the idle gear 20) in the vertical direction. Further, at least a part of the third gear shaft 32F overlaps the hollow portion of the first roll 11 in the vertical direction.

At least a part of the connecting portion 32G overlaps with the hollow portion of the first roll 11 in the left-right direction and the front-rear direction. Further, the first roll 11 and the first supply spool 12 are arranged so as to surround the connecting portion 32G. That is, the connecting portion 32G constitutes the shaft of the first supply spool 12.

The pressed portion 50 is arranged at a position closer to the surface 31A of the first case portion 31 than the support surface 32I in the vertical direction. Further, the pressed portion 50 overlaps with the opening 31B in the vertical direction. In the present embodiment, the pressed portion 50 slightly protrudes upward from the surface 31A.

As shown in FIG. 9, the third gear shaft 32F overlaps at least a part of the pressed portion 50 in the vertical direction. Further, the rotation axis L9 of the idle gear 20 passes through the pressed portion 50.

At least a part of the contact area A of the pressed portion 50 with the pressing member 112 (that is, the region where the external member transmitting the pressing force to the pressed portion 50 contacts) overlaps with the third gear shaft 32F in the vertical direction. .. In the present embodiment, since the pressing member 112 has a cylindrical shape, the contact region A has an annular shape.

Further, at least a part of the pressed portion 50 overlaps with the regulating portion 33F in the vertical direction. Further, at least a part of the regulating portion 33F overlaps with the third gear shaft 32F in the vertical direction.

<Transfer of tape>
As shown in FIG. 9, the printing tape 11A and the ink ribbon 14A are bridged in the left-right direction at the head opening 33B. The printing tape 11A after printing is discharged to the outside of the printing device 1 from the discharge port 33C. A part of the output gear 18 is located in the head opening 33B. Further, the cover portion 32B is exposed in the head opening 33B.

As shown in FIGS. 10A, 10B, 10C, and 10D, the first guide 32C and the second guide 33D are passages for sending the printing tape 11A constituting the first roll 11 from the first frame portion 32 to the second frame portion 33. Consists of.

Specifically, as shown in FIG. 10A, the printing tape 11A drawn out from the first roll 11 abuts on the first guide 32C in a spiral manner from the outside in the radial direction of the first roll 11. It is conveyed downward and rearward within the frame portion 32. As shown in FIG. 10B, the printing tape 11A is further conveyed downward to the left while straddling the connecting portion between the first frame portion 32 and the second frame portion 33 in the vertical direction.

As shown in FIG. 10C, the printing tape 11A that has reached the second frame portion 33 is conveyed downward and forward while abutting on the second guide 33D from the outside in the radial direction. As shown in FIG. 10D, the printing tape 11A that has reached the lower end of the printing cassette 10 passes through the head opening 33B and is discharged from the discharge port 33C.

<Tape transfer and printing by the printing device body>
The print head 102 prints on the printing tape 11A held by the printing cassette 10. The print head 102 is arranged at a position where the printing cassette 10 is mounted on the printing apparatus main body 100 and overlaps with the printing tape 11A and the ink ribbon 14A in the front-rear direction in the head opening 33B.

The printing tape 11A conveyed to the head opening 33B by the platen roller 103 is pressed against the printing head 102 in which the heat generating element generates heat via the ink ribbon 14A. As a result, a part of the ink arranged on the surface of the ink ribbon 14A is transferred to the printing tape 11A, and characters, symbols and the like are printed on the printing tape 11A.

The platen roller 103 conveys the printing tape 11A from the inside of the printing cassette 10 to the outside. The platen roller 103 abuts on the printing tape 11A at the head opening 33B and presses the printing tape 11A against the printing head 102.

The platen gear 104 is connected to the platen roller 103 and engages with the output gear 18. The platen roller 103 and the platen gear 104 can swing between a position isolated from the printing cassette 10 shown in FIG. 11 and a position where the platen gear 104 shown in FIG. 12 engages with the output gear 18.

The drive shaft 105 is inserted into the input spool 16 and engages with the input gear 19 to rotate the input spool 16 and the input gear 19.

As shown in FIG. 12, with the printing cassette 10 mounted on the printing apparatus main body 100, the drive shaft 105 engages with the input gear 19 and the platen gear 104 engages with the output gear 18. Specifically, the drive shaft 105 is inserted into the input spool 16 and the input gear 19 of the printing cassette 10. After that, the platen roller 103 and the platen gear 104 are swung toward the head opening 33B of the printing cassette 10.

The output gear 18 is rotated by rotating the input gear 19 by the drive shaft 105 with the printing cassette 10 mounted, the platen gear 104 is rotated by the rotation of the output gear 18, and the platen roller 103 is rotated by the rotation of the platen gear 104. Rotates.

[1-2. effect]
According to the embodiment described in detail above, the following effects can be obtained.
(1a) The vertical movement of the pressed portion 50 pressed by the pressing member 112 is regulated by the third gear shaft 32F and the first support wall 33E. Therefore, the deformation of the case 35 of the printing cassette 10 is stopped before the idle gear 20 comes into contact with the internal structure of the printing cassette 10. As a result, the pressed portion 50 can be arranged in addition to the corner portion while suppressing the rotational resistance of the idle gear 20 in the printing cassette 10.

(1b) The hollow portion of the first roll 11 and the third gear shaft 32F overlap in the vertical direction, so that the shaft of the first roll 11 (that is, the connecting portion 32G) and the third gear shaft 32F overlap in the vertical direction. There is. Therefore, the pressing force on the pressed portion 50 prevents the first roll 11 from being pressed against the support surface 32I. As a result, the rotational resistance of the first roll 11 can be suppressed.

(1c) By arranging the pressed portion 50 so as to overlap the opening 31B of the first case portion 31, the pressed portion 50 and the third gear shaft 32F are exposed while the pressed portion 50 is exposed from the case 35. It can be easily connected.

(1d) The restricting portion 33F can suppress the bending of the first support wall 33E to which the third gear shaft 32F is pressed by the pressing force on the pressed portion 50. As a result, the deformation of the case 35 is suppressed, so that the effect of suppressing the contact between the idle gear 20 and the internal structure of the printing cassette 10 is promoted.

(1e) When the pressed portion 50 is superposed on the first gear shaft 32D or the second gear shaft 32E by superimposing the pressed portion 50 on the third gear shaft 32F that pivotally supports the idle gear 20 in the vertical direction. In comparison, the pressed portion 50 can be arranged in the central region of the case 35 in the front-rear direction and the left-right direction.

[2. Second Embodiment]
[2-1. Constitution]
The printing apparatus 1A shown in FIGS. 13A and 13B includes a printing cassette 10A and a printing apparatus main body 100A.

Note that in FIGS. 13A and 13B, the illustration of the lid and the pressing member of the printing apparatus main body 100A is omitted. The pressing member of the printing apparatus main body 100A is equivalent to the pressing member 112 of the printing apparatus main body 100 of FIG. 1A.

<Printing cassette>
In the printing cassette 10A, the third roll 21, the take-up spool 22, the take-up gear 23, and the pinch roller 24 shown in FIG. 14 are added to the print cassette 10 of the first embodiment, and the first roll is added. The input spool 16, the first case portion 31, the first frame portion 32, the second frame portion 33, and the second case portion 34 of the embodiment are combined with the input spool 25, the first case portion 36, the first frame portion 37, and the second case portion 34. It is replaced with the frame portion 38 and the second case portion 39.

The input spool 25 is the same as the input spool 16 except that it does not have the spline teeth 16B. The first case portion 36, the first frame portion 37, the second frame portion 38, and the second case portion 39 are the first case portion 31, the first frame portion 32, the second frame portion 33, and the second case, respectively. The portion 34 is stretched in the left-right direction. Since the other configurations of the printing cassette 10A are the same as those of the printing cassette 10 of the first embodiment except for the points described below, the description thereof will be omitted.

The third roll 21 is formed by winding a laminated tape used for protecting the printing tape 11A around an input spool 25. The laminated tape has an adhesive surface that is bonded to the printing tape 11A printed by the printing head 102.

The take-up spool 22 can rotate around the rotation axis L10. The rotation axis L10 of the take-up spool 22 is parallel to the rotation axis L5 (that is, in the vertical direction) of the second supply spool 15. The take-up spool 22 winds up the ink ribbon 14A by rotating the take-up gear 23.

The take-up gear 23 is connected to the take-up spool 22 and is engaged with the idle gear 20. The take-up gear 23 is rotated by the driving force input to the input gear 19 to rotate the take-up spool 22.

The pinch roller 24, together with the pressing roller 106, presses the laminating tape against the printing tape 11A after printing. The pinch roller 24 is arranged downstream of the head opening 33B in the transport direction of the printing tape 11A.

As shown in FIG. 15, in a projection view in which the third gear shaft 32F, the input gear 19, the output gear 18, and the take-up gear 23 are projected onto a virtual surface perpendicular to the vertical direction, the third gear shaft 32F is the input gear. It overlaps with the convex entrapment P defined by 19, the output gear 18, and the take-up gear 23.

<Printing device body>
The printing apparatus main body 100A is obtained by adding the pressing roller 106 shown in FIG. 16 to the printing apparatus main body 100 of the first embodiment. Since the other configurations of the printing apparatus main body 100A are the same as those of the printing apparatus main body 100 of the first embodiment except for the points described below, the description thereof will be omitted.

The pressing roller 106 is configured to be swingable together with the platen roller 103 and the platen gear 104. That is, the pressing roller 106 can swing between the position isolated from the printing cassette 10A shown in FIG. 16 and the position where the printing tape 11A and the laminating tape are pressed together with the pinch roller 24 shown in FIG.

[2-2. effect]
According to the embodiment described in detail above, the following effects can be obtained.
(2a) The printed content of the printing tape 11A can be protected by the laminated tape while having the same advantages as those of the first embodiment.

(2b) Since the third gear shaft 32F overlaps the convex envelope P defined by the input gear 19, the output gear 18, and the take-up gear 23, the pressing force on the pressed portion 50 is applied to the third gear shaft. It is suppressed that the transmission is biased to one gear shaft other than 32F.

[3. Other embodiments]
Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above-described embodiments and can take various forms.

(3a) In the printing apparatus of the above embodiment, the vertical length of the sliding portion of the idle gear may be smaller than the vertical length of the entire idle gear (that is, the thickness of the idle gear).

For example, in the idle gear 220 shown in FIGS. 17A and 17B, the vertical length D2 of the sliding portion 220C is smaller than the thickness D3 of the idle gear 220. In the idle gear 220, the length D1 of the third gear shaft 32F in the vertical direction is larger than the length D2 of the sliding portion 220C of the idle gear 220 in the vertical direction. In this case, the convex portion 33G may be extended upward so as to come into contact with the third gear shaft 32F.

(3b) In the printing apparatus of the above embodiment, the pressed portion may be located below the surface of the first case portion.

(3c) The printing apparatus of the above embodiment is not limited to printing using an ink ribbon. The printing apparatus may use a strip-shaped thermal paper as a substitute for the printing tape in the first embodiment, and may use a laminated tape (that is, a protective tape) as a substitute for the ink ribbon.

Further, the printing apparatus may use a stencil tape in which a printing pattern is perforated by a thermal head as a printing tape, and a strip-shaped interleaving paper that protects and supports the stencil tape as a second tape. In this case, at the head opening, the printing tape may be superimposed on the second tape at a position closer to the printing head than the second tape (that is, as an upper layer), and the printing tape may be superimposed on the printing head than the second tape. It may be superposed on the second tape at a position away from (that is, as a lower layer).

(3d) In the printing cassette of the above embodiment, the pressed portion may be arranged so as to overlap the first gear shaft or the second gear shaft in the vertical direction. That is, the pressed portion may be vertically connected to the first gear shaft or the second gear shaft by the connecting portion.

(3e) In the printing cassette of the above embodiment, the pressed portion and the third gear shaft do not necessarily have to be connected by the connecting portion. For example, the pressed portion and the third gear shaft may be directly connected. Further, the pressed portion and the third gear shaft may be arranged in close proximity to each other in the vertical direction.

(3f) The printing cassette of the above embodiment may have two or more idle gears. Further, the idle gear does not necessarily have to be a step gear, and may be a single gear. Further, the printing cassette does not necessarily have to have an idle gear, and the output gear may be directly engaged with the input gear.

(3g) The printing cassette of the second embodiment may include a third supply spool in which a laminate tape is wound instead of the take-up spool. Further, in the printing cassette of the second embodiment, the input spool may be used as a take-up spool of the ink ribbon.

(3h) In the printing cassette of the above embodiment, the first roll does not necessarily have to be wound around the first supply spool. That is, the first roll may be configured by winding the printing tape in a cylindrical shape in which a hollow portion is defined by the inner peripheral surface.

(3i) The functions of one component in the above embodiment may be dispersed as a plurality of components, or the functions of the plurality of components may be integrated into one component. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above embodiment may be added or replaced with the configuration of the other embodiment. It should be noted that all aspects included in the technical idea specified from the wording described in the claims are embodiments of the present disclosure.

1,1A ... Printing device, 10,10A ... Printing cassette, 11 ... First roll,
11A ... Printing tape, 12 ... 1st supply spool, 14 ... 2nd roll,
14A ... ink ribbon, 15 ... second supply spool, 16 ... input spool,
18 ... output gear, 19 ... input gear, 20 ... idle gear, 21 ... third roll, 22 ... take-up spool, 23 ... take-up gear, 31 ... first case, 31A ... surface, 31B ... opening, 32 ... 1st frame part, 32F ... 3rd gear shaft, 32H ... 2nd support wall, 32G ... connection part, 33 ... 2nd frame part, 33E ... 1st support wall, 33F ... regulation part,
34 ... 2nd case part, 35 ... case, 50 ... pressed part, 100 ... printing device main body, 101 ... cassette insertion part, 102 ... print head, 103 ... platen roller,
104 ... Platen gear, 105 ... Drive shaft, 112 ... Presser member.

Claims

The pressed part that receives the pressing force from the outside and the pressed part
With multiple gears
A gear shaft that is inserted into the first gear of one of the plurality of gears and extends in the first direction parallel to the rotation axis of the first gear.
A first support wall that is arranged on the side opposite to the pressed portion of the first gear in the first direction and restricts the movement of the gear shaft to the side opposite to the pressed portion.
With
The gear shaft overlaps with at least a part of the pressed portion in the first direction, and the first gear has a sliding portion on which the inserted gear shaft slides.
A printing cassette in which the length of the gear shaft in the first direction is larger than the length of the sliding portion of the first gear in the first direction.
The pressed part that receives the pressing force from the outside and the pressed part
With multiple gears
A gear shaft that is inserted into the first gear of one of the plurality of gears and extends in the first direction parallel to the rotation axis of the first gear.
A first support wall that is arranged on the side opposite to the pressed portion of the first gear in the first direction and restricts the movement of the gear shaft to the side opposite to the pressed portion.
With
The gear shaft overlaps at least a part of the pressed portion in the first direction, and the first gear has two surfaces perpendicular to the first direction.
A printing cassette in which the gear shaft penetrates at least one of the two surfaces of the first gear, which is close to the first support wall.
A roll of printing tape that is isolated from the first support wall on the pressed portion side of the first gear in the first direction is further provided.
The roll has a cylindrical shape in which the printing tape is wound around an axis parallel to the first direction, and a hollow portion is defined by the inner peripheral surface of the wound printing tape.
The printing cassette according to claim 1 or 2, wherein at least a part of the gear shaft overlaps with the hollow portion of the roll in the first direction.
Further having a connecting portion for connecting the gear shaft and the pressed portion,
At least a part of the connecting portion overlaps with the hollow portion of the roll in the second direction perpendicular to the first direction.
The printing cassette according to claim 3, wherein the roll is arranged so as to surround the connecting portion.
A first case portion having a surface perpendicular to the first direction and an opening provided on the surface is arranged between the first case portion and the first support wall in the first direction. , A second support wall having a support surface that supports the roll from the first gear side in the first direction,
With more
The third or fourth aspect, wherein the pressed portion is arranged at a position closer to the surface of the first case portion than the support surface in the first direction and overlaps with the opening in the first direction. The printing cassette described in.
The printing cassette according to any one of claims 1 to 5, wherein the rotation axis of the first gear passes through the pressed portion.
The printing according to any one of claims 1 to 6, wherein at least a part of the area of the pressed portion where the external member transmitting the pressing force comes into contact with the gear shaft overlaps with the gear shaft in the first direction. Cassette for.
A second case portion arranged on the side opposite to the first gear with respect to the first support wall in the first direction, and a second case portion.
In the first direction, it is arranged between the first support wall and the second case portion, and at a position overlapping the gear shaft in the first direction, it is placed on the second case portion of the first support wall. A regulatory unit that regulates bending in the approaching direction,
The printing cassette according to any one of claims 1 to 7, further comprising.
The printing cassette according to claim 8, wherein at least a part of the pressed portion overlaps with the restricting portion in the first direction.
As the plurality of gears
The input gear to which the driving force is input and
The output gear that outputs the driving force and
An idle gear that directly or indirectly engages the input gear and the output gear and transmits the driving force input to the input gear to the output gear.
With
The printing cassette according to any one of claims 1 to 9, wherein the first gear is the idle gear.
As the plurality of gears, a second gear engaged with the idle gear is further provided, and the gear shaft, the input gear, the output gear, and the second gear are projected onto a virtual surface perpendicular to the first direction. The printing cassette according to claim 10, wherein in the projection, the gear shaft overlaps with the convex entrap defined by the input gear, the output gear, and the second gear.