JPS61154982A - Printing apparatus - Google Patents

Abstract

PURPOSE:To eliminate wasteful consumption, by revolving a printing ribbon feed lever by a motor only at the time of rotation in one direction while raising a lift frame only at the time of rotation in the other direction. CONSTITUTION:When a lift frame 54 is raised on the basis of the reversal of a DC motor, a left side ratchet wheel 65 is rotated and the spool 75 integrated with said wheel 65 is also rotated to wind a predetermined amount of a collecting ribbon 73 around said spool 75 and said ribbon 73 is raised to a collect acting position along a paper guide plate 78 and a ribbon guide piece 79. At this time, a printing ribbon feed ratchet wheel 45 is not rotated and the transfer of a printing ribbon is not performed at all. Contrarily, when the printing ribbon feed lever 42 is revolved on the basis of the positive rotation of the DC motor 12, the lift and transfer of the collecting ribbon 73 are not performed and only the transfer of the printing ribbon is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to printing devices such as typewriters and printers that erase characters by lifting a collection ribbon to a collection action position, and particularly to Pivoted for free movement,
As the lift frame rises, the spool is rotated to take up the collect ribbon, and the print ribbon feed lever is rotated to rotate the print ribbon feed ratchet wheel, which allows the print ribbon in the print ribbon cassette placed on the carrier to be rotated. The present invention relates to a printing device that transports a printing ribbon.

"Prior art" A conventional printing device of this type is, for example, disclosed in Japanese Patent Application Laid-Open No. 58-122.
As disclosed in Japanese Patent No. 888, a cassette plywood on which a print wheel cassette is placed is pivotally mounted on a carrier so as to be movable up and down, and a cassette lift mechanism for moving this cassette base plate up and down is attached to the carrier, When printing,
The print ribbon cassette is lifted by operating the cassette lift mechanism to rotate the cassette base plate upward, and at the same time, the print ribbon is transferred by rotating the print ribbon feed lever using the cassette lift mechanism.

On the other hand, at the time of collection, the lift frame is raised and the cassette lift mechanism is also operated in conjunction with this.
When the collection ribbon was lifted, the print ribbon cassette was also lifted at the same time.

``Problems to be Solved by the Invention'' For this reason, the printing ribbon is transported during collection in the same way as during printing, which not only wastes the ribbon but also requires a large amount of power for the collection operation.

An object of the present invention is to solve these problems.

"Means for Solving the Problems" In the printing device of the present invention, a printing ribbon feeding cam and a collection ribbon lifting cam are pivotally supported on a carrier. Both cams rotate together and are selectively rotated in one direction or the other by a motor. The print ribbon feed cam rotates the print ribbon feed lever only when rotating in one direction, whereas the collect ribbon lift cam (lifts the lift frame via the lift lever only when rotated in the right direction).

The print ribbon cassette is fixed on a carrier and placed on a cassette base plate that does not move up and down.

"Function" Therefore, when the printing ribbon feeding cam and the collection ribbon lifting cam are rotated together in one direction by the motor, only the printing ribbon is transferred, and when they are rotated together in the other direction, the printing ribbon is transferred. There is no transfer, and the collection ribbon is lifted and transferred. The print ribbon cassette remains fixed in position both during printing and during collection.

"Example" An embodiment of the present invention will be described in detail below based on the drawings.

As shown in Figure 1.2, the main body of the carrier 1, that is, the carrier main body 2, consists of a top plate (cassette/base plate) 3 with a slanted front surface, a bottom plate 4, left and right side plates 5, 6, and a rear plate 7. It has a box shape with an open front and is mounted on the front and rear guide shafts 8.9 so as to be slidable left and right, and runs parallel to the platen 10. A carrier driving stepping motor 11 and a ribbon driving DC motor 12 are mounted inside the carrier body 2, both of which are reversible in forward and reverse directions.

The stepping motor 11 is attached to a U-shaped mounting frame 13 fixed on the bottom plate 4, and its rotation is transmitted through a rotation transmission mechanism, that is, a small gear 14. Large gear 15°, middle gear 16
and is transmitted to the capstan I8 via the large gear 17. The small gear 14 is fixed to the output shaft of the stepping motor 11, the large gear 15 and the middle gear 16 are integrally supported by the mounting frame 13, and the large gear 17 and the capstan 18 are integrally supported by the same ( It is pivotally supported by the mounting frame 13.

The capstan 18 has 'II' formed on its outer peripheral surface.
One ends of two left and right wires 20° 21 wound along I km 19 are connected. These wires 20
．． The other end of 21 is moored to the left and right sides of a typewriter body or a printer body (not shown) using mooring tools 22, respectively, so that the tension can be adjusted.

Therefore, as the stepping motor 11 rotates forward or backward, the capstan 18 rotates forward or backward, and one of the two wires 20 and 21 is wound around the capstan 18 while the other is unwound. As a result, the carrier 1 can move the stepping motor 1 mounted on it.
1, it slides to the left or right in a self-propelled manner as the clock rotates forward or reverse.

Note that the wires 20 and 21 may be made into one continuous piece, and the middle portion thereof may be wound around the capstan 18 a required number of times.

On the other hand, the ribbon drive DC motor 12 is attached to another mounting frame 23 fixed on the bottom plate 4, and its rotation is controlled by a small gear 24. It is transmitted to a half-rotation cam 27 via a medium gear 25 (FIG. 3) and a large gear 26. The small gear 24 is fixed to the output shaft of the DC motor 12, the middle gear 25 is pivotally supported by the mounting frame 23, and the large gear 26 and the half-rotation cam 27 are integrally supported by the mounting frame 23.

As shown in Fig. 1.3.4, two grooves 28 parallel to the axis are formed on the outer peripheral surface of the half-rotation cam 27 with a phase difference of 180 degrees. An electromagnet 29 is mounted on the bottom plate 4 to control the rotation of the half-rotation cam 27.

The electromagnet 29 has a solenoid 31 attached to its mounting frame 30, and a rotation regulating lever 32 rotatably mounted thereon. The free end of the rotation regulating lever 32 is a claw portion 33 that is removably fitted into the groove 2B of the half-rotation cam 27. The rotation regulating lever 32 is biased by a spring 34 to rotate in a predetermined direction, that is, in a direction in which the claw portion 33 fits into the groove 28 .

The half-rotation cam 27 is intermittently rotated by 180 degrees clockwise or counterclockwise as the DC motor 12 rotates forward or backward. It is assumed that the DC motor 12 is rotated in the normal direction during the printing operation and rotated in the reverse direction during the collection operation.

In normal conditions, the solenoid 31 of the electromagnet 29 is demagnetized, so the claw part 33 of the rotation regulating lever 32 fits into a2B, and the half-rotation cam 27 is prevented from rotating in either counterclockwise direction. There is. When the solenoid 31 is first excited in this state, the rotation regulating lever 32 is rotated against the spring 34 due to its attractive force, and the claw portion 33 is moved into the groove 22.
The half-rotation cam 27 is allowed to rotate. Thereafter, when the DC motor 12 is rotated forward or reverse for a predetermined period of time, the half-rotation cam 27 is rotated clockwise or counterclockwise, and during this rotation, the solenoid 31 is demagnetized and the claw portion 3
3 is in sliding contact with the rotating half-rotation cam 27, and is fitted into another groove 28 to restrict the rotation of the half-rotation cam 27 again. Since the DC motor 12 is driven for a certain period of time, the claw portion 33 is in the groove 2.
It will stop by the time it is inserted into 8. This operation of the electromagnet 29 and the DC motor 12 is performed for each print or collect operation.

The rotation of the half-rotation cam 27 is controlled by the drive gear 3 that is integral with it.
5 to a driven gear 36 having the same number of teeth.

This driven gear 36 is pivotally supported by the mounting frame 23, and is integrally provided with a collection ribbon lift cam 37 on its left side and a print ribbon feed cam 38 on its right side. Therefore, when the half-rotation cam 27 makes a half-rotation as described above, both cams 37, 38 also make a half-rotation at the same time.

The printing ribbon feeding cam 38 has one
A pair of elliptical shapes 'a (cam tracks) 39 are formed with a phase difference of 180 degrees. The two halves of these oval grooves 39 intersect with each other, and the two halves together form the cam 38.
A common circular groove (relief track) 40 centered on the axis of
is formed. The inner bottom surface of both types of circular a39 is the cam 38
There is a step at the periphery of the mutually intersecting portion inclined in the axial direction, and two symmetrical steps 41 are formed on the inner bottom surface of the common circular groove 40 by this step.

A printing ribbon feeding lever 42 is linked to this printing ribbon feeding cam 38 as follows. The print ribbon feed lever 42 is rotatably supported on the mounting frame 23 by a shaft 43 at its upper and lower intermediate portions, and has a pin 44 projecting substantially horizontally from its lower end. This pin 44 slides freely into the oval groove 39 of the cam 38 and engages with the inner peripheral edge of the common oval 840 at one end of the step 41 when the cam 38 is stopped. .

In this state, the DC motor 12 rotates forward based on the printing command,
When the cam 38 rotates clockwise (in the direction of arrow a) in FIG. 4, the pin 44 engages with the stepped portion 41 to form a common circular shape. J
! 40 into one oval groove 39,
While being slidably engaged with this oval 139, it is lifted as it is displaced upward, thereby rotating the print ribbon feed lever 42 clockwise in the figure. When the cam 38 rotates half a turn and stops, it returns to the state shown in the figure. Note that, at this time, the positions of the circular grooves 39 in both tanks are reversed.

On the other hand, the DC motor 12 reverses based on the collect command,
When the cam 38 rotates counterclockwise (in the direction indicated by the arrow), the pin 44 remains in the common circle 'a40' and slides therein, and is not lifted up, so the printing ribbon feed lever 42 does not rotate as shown in the figure. Retain state.

Therefore, the print ribbon feed lever 42 is rotated in the direction of arrow a by a fixed amount for each print only during printing operation.

When the print ribbon feed lever 42 rotates in this manner, its upper end pawl 42a (Fig. 1) collides with the pawl of the print ribbon feed ratchet wheel 45, and the ratchet wheel 45 is rotated by a certain amount in a predetermined direction. Ru. This ratchet wheel 45 is pivotally supported together with a spike gear 47 on a rotating base plate 46 tilted and mounted on the top plate 3 of the carrier main body 2, as shown in FIG. is braked by. The spike gear 47 enters into the window 50 of the printing ribbon cassette 49 placed on the top vi, 3 of the carrier body 2 as described later, and bites into the printing ribbon (not shown) therein.

Therefore, the printing ribbon is transferred every time the DC motor 12 rotates forward and the printing ribbon feeding cam 38 makes a half turn in the direction of arrow a.

On the other hand, the collection ribbon lift cam 37 forms a pair of symmetrical S-shaped recesses 51, as shown in FIG. In both concave portions 51, the most depressed intermediate portion 51a is biased in opposite directions, and one side portion 51b that continues from the intermediate portion 51a to the convex portion 52 is a curved surface with a large curvature. The other side portion 51c is a gently curved surface with a small curvature.

A lift frame 54 is linked to the collection ribbon lift cam 37 via a lift lever 53 as follows.

That is, as shown in FIG. 1.2, the lift frame 54 has a planar U-shape in which the rear ends of the left and right arms 55 and 56 are connected by a connecting plate 57, and the rear ends are connected to the carrier body 2 by a shaft 58. It is pivotally mounted to the rear plate 7 of the unit so that it can move up and down. The lift lever 53 is rotatably attached to the left arm 55 by a shaft 59, and the lift lever 53 is pivoted to the left arm 55 by a spring 60.
The left arm 55 is biased counterclockwise in the figure and normally stops by engaging with a stopper 61 protruding from the left arm 55.
It maintains the state shown in the figure, hanging more to the side. A pin 62 is provided at the lower end (free end) of the lift lever 53 to protrude almost horizontally, and when the collect ribbon lift cam 37 is stopped, the pin 62 is inserted as shown by the solid line in FIG. It engages with the intermediate portion 51a of the recess 51.

Therefore, when the DC motor 12 reverses based on the collect command and the cam 37 rotates clockwise (in the direction of arrow C) in FIG. 5, the lift lever 53 is prevented from rotating counterclockwise by the stopper 61. , the pin 62 is lifted while sliding along the other side portion 51C of the recess 51 of the cam 37, and the lift frame 54 is rotated upward about the shaft 58. When the cam 37 rotates half a turn and stops, it returns to the state shown by the solid line. Note that, at this time, both the recesses 51 are reversed.

On the other hand, when the DC motor 12 rotates forward based on the print command and the cam 37 rotates counterclockwise (in the direction of arrow d),
Since the pin 62 is pushed by the tilted portion 51b of the recess 51 and the lift lever 53 is rotated clockwise against the spring 60, the lift frame 54 is maintained as it is without being lifted.

On the outside of the left and right arms 55,56 of the lift frame 54, left and right spool shafts 63,64 are rotatably supported, respectively, as shown in FIG.
Left and right ratchet wheels 65 and 66 are fixed to 64, respectively. A braking plate spring 67 is in pressure contact with the left ratchet wheel 65, and a brake lever 69, which is rotationally biased by a spring 68, is in pressure contact with the right ratchet wheel 66. Further, a click 70 is engaged with the left ratchet wheel 65 as shown in FIG. The click 70 is rotatably connected to the left side plate 5 of the carrier body 2 by a shaft 71, and is urged to rotate by a spring 72 so as to mesh with the ratchet wheel 65.

A spool 74 wound with a new, unused collect ribbon 73 is removably fitted onto the right spool shaft 64, and a spool 74 for winding up the used collect ribbon is attached onto the left spool shaft 63. 75 is similarly removably fitted.

Ribbon guides 76 and 77 are attached to the free ends of the left and right arms 55 and 56 of the lift frame 54, respectively, and a paper guide plate 78 and a ribbon guide piece 79 are installed at an angle at the front end of the carrier body 2. has been done. The upper portions of the paper guide plate 78 and the ribbon guide piece 79 are curved along the outer circumferential surface of the platen 10, and a gap is formed between them for guiding the collection ribbon 73 therethrough.

Therefore, when the lift frame 54 is lifted based on the reverse rotation of the DC motor 12 as described above, the left ratchet wheel 65 rotates, and the spool 751) is integrated with it.
L J, Afret 1J Bon 7'1 (A predetermined amount is wound up on the spool 75, and the paper guide plate 7
8 and the ribbon guide piece 79 to the collection position. At this time, the printing ribbon feeding cam 38
rotates in the direction indicated by the arrow in FIG. 4, but since the rotation in this direction is not transmitted to the print ribbon feed lever 42 as described above,
does not rotate and no print ribbon transport occurs.

On the contrary, when the print ribbon feed cam 38 rotates in the direction of arrow a in the figure based on the forward rotation of the DC motor 12 and the print ribbon feed lever 42 is rotated, the collector ribbon lift cam 37 simultaneously rotates. The lift lever 53 rotates in the direction indicated by the arrow in FIG.
does not rise. Therefore, at this time, the collection ribbon 7
3 lift and transport are not performed, only the print ribbon transport is performed.

The printing ribbon cassette 49 is attached to the top plate 3 by a hook 80 protruding from the front side of the top plate 3 of the carrier main body 2 and a hook 81 having a spring force protruding from the rear end (FIG. 2).
It is detachably attached to the top plate 3 and is supported with an inclination toward the front along the inclination of the top plate 3, and this supported state is maintained regardless of the vertical movement of the lift frame 54. Note that an opening 3a is formed on the front side of the top plate 3.

A printing unit 82 is further installed inside the carrier body 2 as shown in FIG. 1.6.7.

The mounting frame 83 of this printing unit 82 is attached to the carrier main body 2.
It is rotatably connected to the left and right side plates 5.6 of the left and right side plates 5.6 by left and right shafts 84. A type wheel select motor 85 is fixed to the rear side of this mounting frame 83, and a hammer actuator 86 is fixed to the upper side, and a print hammer 87 is rotatably attached to the shaft 88. Further, in the mounting frame 83, two driven gears 90 and 91 are pivotally supported by a common rotating shaft 92 within a cavity 89 thereof. Both driven gears 90,91 mesh with a drive gear 93 fixed to the output shaft of the type wheel select motor 85. A conventionally known backlash prevention means is provided between the driven gears 90, 91 to sandwich the teeth of the driving gear 93 between the driven gears 90, 91.

A type wheel unlocking protrusion 83a is integrally formed in the center of the front lower end of the mounting frame 83 to protrude.

The rotating shaft 92 has an enormous head 94 that protrudes from the front surface of the mounting frame 83, and a truncated conical tip protrusion 95 that is symmetrical in the front and back and has a smaller central portion bulged in the center of the tip surface of the head 94. are integrally formed in a protruding manner. A circular type wheel rotating body 96 is fixed to this head 94. The type wheel rotating body 96 has a retaining groove 98 formed in its flange 97 as shown in FIG. 8, and a circular recess 96a as shown in FIG. 7 on the front surface.

As shown in the figure, a tossin spring 99 is hung on the mounting frame 83, and when the mounting frame 83 is rotated backwards from the dead point (opened), its upper end snaps off as shown in the figure. The protrusion 83b engages with the inclined side edge of the opening 3a of the top plate 3 of the carrier body 2.

As a result, the printing unit 82 is held at the retracted position.

On the other hand, when the mounting frame 83 is rotated forward from the dead point (closed), the upper end protrusion 83b engages with the stopper 100 protruding inside the carrier body 2, as shown in FIG. The printing unit 82 is held in the printing operation position.

When the printing unit 82 is set in the printing position in this way, the type wheel rotating body 96 is connected to the type wheel (daisy wheel) 102 held in the type wheel cassette 101 as described below.

The type wheel 102 is conventionally used for public use, and as shown in FIG.
6 is attached. A clamping spring 107 is disposed within this cap 106.

As shown in Fig. 6.9, the type wheel cassette 101 is constructed by removing the upper edge of the back plate 108 (only forming a circumferential wall 109 with a circular inner peripheral surface protruding toward the front side); The front panel is completely open, so to speak.The back plate 10
A circular coupling hole 110 is provided in the center of 8,
Further, on the outer surface of the back plate 108, on the lower side of the compling hole 110, there are left and right guide protrusions 111 in the upper and lower sides.
A lock body 112 is fitted into these guide protrusions 111 so as to be vertically slidable.

This lock body 112 is biased upward by a spring 114 disposed between it and the spring holder of the back plate 108 and the protruding piece 113, and the hook portion 115 at the lower end rises to a position where the spring holder engages with the protruding piece 113. can be done. Lock body 112
has an inclined shoulder 112a, which engages with the type wheel unlocking protrusion 83a of the mounting frame 83 of the printing unit 82.

These type wheels 102 and type wheel cassettes 1
In addition to 01, a circular coupling 116 is also prepared.

The coupling 116 has a size that allows it to fit freely into the coupling hole 110 of the type wheel cassette 101, and has an approximately truncated conical shaft protrusion 117 at the center of the front surface and a flange 118 on the circumferential surface.
are integrally formed in a protruding manner, and a circular convex portion 116a is provided on the rear surface, a shaft hole 119 is provided in the center thereof, and the collar 11 is provided with a circular convex portion 116a at the center thereof.
A positioning protrusion 120 is provided on the front surface of the 8, and an engagement protrusion 121 and a lock recess 1 that protrude to the rear are located on the periphery of the symmetrical position.
22 are provided. A spring bearing groove 123 is formed on the entire outer peripheral surface of the shaft protrusion 117, and a clamping spring 1 similar to the clamping spring 107 of the type wheel 102 is installed in the shaft hole 119.
24 are arranged.

The type wheel 102 is attached to the type wheel cassette 101 using this coupling 116 as follows.

That is, while fitting the coupling 116 into the coupling hole 110 of the type wheel cassette 101,
The lock body 11 is inserted into the lock recess 122 of the coupling 116.
After fitting the upper ends of the type wheel 102, the shaft hole 104 of the type wheel 102 is inserted into the coupling 116 on the front side of the back plate 108.
At the same time, the positioning hole 10 is fitted into the shaft protrusion 117 of the
5 is fitted into the positioning protrusion 120.

As a result, the type wheel 102 is connected to the coupling 11
without relative rotation with respect to the clamping spring 10.
The spring receiver 7 is fitted into the groove 123 by holding the shaft protrusion 117 so that it does not come off inadvertently, and the lock body 112 is inserted into the lock recess 122 of the coupling 116.
As a result of the fitting, the type wheel cassette 101 is attached to the type wheel cassette 101 while being locked at the home position without rotating together with the camp ring 116.

The type wheel cassette 101 with the type wheel 102 mounted in this way is constructed by the left and right cassette guide pieces 125.12 attached to the front ends of the left and right side plates 5.6 of the carrier body 2.
6 (Fig. 1), by inserting the cassette receiver 127 attached to the lower edge of the front end of the carrier body 2 until it fits, the cassette is removably loaded onto the front end of the carrier body 2 in a backwardly inclined state. When performing this loading, the printing unit 82 is opened and moved to the retracted position shown in FIG.

After loading the type wheel cassette 101 in this way,
When the printing unit 82 is closed and set in the printing operation position shown in FIG. The upper end of the lock body 112 is pulled out from the lock recess 122 of the coupling 116, and the coupling 116 is unlocked from the type wheel cassette 101. At the same time, the head 94 of the rotating shaft 92 is moved to the coupling 116.
The distal end protrusion 95 of the rotary shaft 92 is clamped by the clamping spring 124, and the coupling 116 is held on the rotary shaft 92 without inadvertently coming off. moreover,
Recess 96a of type wheel rotating body 96 and coupling 1
At the same time, the engagement groove 98 of the type wheel rotating body 96 and the engaging protrusion 122 of the coupling 116 engage with each other, and the coupling 116 rotates relative to the type wheel rotating body 98. It is retained without doing anything.

Therefore, when the type wheel rotating body 96 rotates based on the drive of the type wheel select motor 85, the coupling 116 and the type wheel 102 are rotated together with it independently of the type wheel cassette 101. Furthermore, by operating the printing hammer 87, printing is performed on the paper loaded on the platen 10. Since the printing ribbon cassette 49 is placed on the carrier body 2 with the front tilted upward, and the type wheel 102 is mounted on the front end of the carrier body 2 with the rear tilted, the printing surface is always visible to the operator. Even though the ribbon cassette 49 is in the field of view and is structured not to be lifted during printing and collecting operations, visual confirmation of printing or erasure can be performed at all times while operating the keys.

"Effects of the Invention" As described above, according to the printing device of the present invention, since the printing ribbon is not transported during collection, wasteful consumption of the printing ribbon can be eliminated. In addition, since the printing ribbon cassette is not lifted during printing or collecting, the driving force is smaller than before, and no clutch is required to switch between printing and collecting operations, resulting in a simpler and more compact configuration. can.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, with FIG. 1 being a plan view and FIG.
The figure is a left side view, Figure 3 is a partial sectional view taken along line 1-I in Figure 1, Figure 4 is a partial sectional view taken along line nn in Figure 1, and Figure 5 is a collection ribbon lift cam and lift frame. 6 and 7 are partial cross-sections taken along the line ■-■ in FIG. 8 is a partially cutaway perspective view of the type wheel, coupling and type wheel rotating body, and FIG. 9 is a rear view showing the type wheel held in the type wheel cassette. 1...Carrier, 2...Carrier body, 3, 3a.
... Top plate (cassette base plate) and its opening, 4... Bottom plate, 5.6... Left and right side plates, 7... Rear plate, 8, 9...
Guide shaft, 10...Platen, 11...Stepping motor for carrier drive, 12...DC motor for ribbon drive, 13...Mounting frame, 14...Small gear, 15.
...Large gear, 16...Medium gear, 17...Large gear, 18...Capstan, 19...Neutral groove, 20
, 21... Wire, 22... Mooring tool, 23... Mounting frame, 24... Medium gear, 26... Large gear, 27
...half-rotation cam, 28...groove, 29...electromagnet,
30...Mounting frame, 31...Solenoid, 32...
Rotation regulating lever, 33...claw portion, 34...spring, 3
5... Drive gear, 36... Driven gear, 37...
・Collection ribbon lift cam, 38...Print ribbon feed cam, 39...Oval groove, 40...Common circular groove, 41...Step part, 42.42a...Print ribbon feed lever and its upper end claw portion, 43...shaft, 44...
Pin, 45... Ratchet wheel for feeding the printing ribbon, 46... Rotating base plate, 47... Spike gear, 4
8... Braking leaf spring, 49... Printing ribbon cassette, 50... Window section, 51, 51a, 51b, 51C25
2... Concave part of the collection ribbon cam, its intermediate part,
- side part, other side part and convex part, 53... Lift lever, 54... Lift frame, 55.56... Left and right arms, 57... Connection plate, 58.59... Shaft, 60...
Spring, 61...Stopper, 62...Bin, 63°6
4... Spool shaft, 65.66... Ratchet wheel, 67... Braking leaf spring, 68... Spring, 69
...Brake lever, 70...Click, 71...Shaft, 72...Spring, 73...Collection ribbon, 74.
75... Spool, 76, 77... Ribbon guide,
78...Paper guide plate, 79...Ribbon guide piece, 80
．． 81... Hook, 82... Printing unit, 83.
83a, 83b...-ta, 86... Hammer actuator, 87... Printing hammer, 88... Shaft, 89
...vacancy, 90.91...driven gear, 92...
Rotating shaft, 93... Drive gear, 94.95... Head and tip protrusion of rotating shaft, 96... Type wheel rotating body, 96a. 97, 98... Recess of type wheel rotating body, collar and engagement groove, 99... Torsion spring, 100... Stopper, 101... Type wheel cassette, 102...
Type wheel, 103, 104.105... Disc of type wheel, its shaft hole and positioning hole, 106... Cap, 107... Clamping spring, 108.109.11
0.111... back plate 9 peripheral wall of type wheel cassette,
Coupling hole, guide protrusion, 112° 112a... Lock body and its shoulder, 113... Spring holder is protrusion, 11
4... Spring, 115... Hook portion of lock body, 116.
...Coupling, 116 a, 117.118.
119.120.121122, 123... Coupling protrusion, shaft protrusion, flange, shaft hole 9 positioning protrusion, engagement protrusion, lock recess, spring receiver is groove, 124... clamping Spring, 125.126...Cassette guide piece, 127...
cassette receptor.

Claims (1)

[Claims] 1. The lift frame is pivoted to the carrier so that it can move up and down, and as the lift frame rises, the spool is rotated to wind up the collect ribbon, and the print ribbon feed lever is rotated to create a ratchet wheel for feeding the print ribbon. In a printing device that rotates a printing ribbon and transports a printing ribbon in a printing ribbon cassette placed on a carrier, the motor mounted on the carrier selectively rotates the printing ribbon in one direction or the other direction, and the printing ribbon is rotated in one direction only when the printing ribbon is rotated in one direction. A printing ribbon feeding cam that rotates a printing ribbon feeding lever, and a printing ribbon feeding cam that selectively rotates in one direction or the other direction together with this cam, and applies a lifting force to the lift frame via the lift lever only when rotating in the other direction. A printing device characterized in that a collection ribbon lifting cam is pivotally supported on the carrier, and the printing ribbon cassette is placed on a cassette base plate fixed to the carrier.