JPH02113969A - Printer - Google Patents

Abstract

PURPOSE:To straightly draw out a tray by providing an injection member for sending out the tray at the time of injection so as to expose the same to the outside of a printer main body and an tensile elastic member for always pulling and energizing the injection member in a direction exposing the tray from the printer main body. CONSTITUTION:An injection member 18 for sending out a part of a paper feed tray 20 to the outside of a printer main body is provided to the rear of the recessed part 5b of a paper feed tray receiver 5 so as to be freely slidable along a pair of guide grooves 5c, 5c. A pair of erected parts 18a, 18a respectively inserted through a pair of the guide grooves 5c, 5c are molded on both sides of the injection member 18 in a protruding state and the base end parts 18b, 18b of the erected parts 18a, 18a are molded in a protruding state so as to slide along the upper surface of the recessed part 5b. A pair of tensile coil springs (tensile elastic members) 19, 19 are interposed between the notch parts 18d, 18d of the injection member 18 and the notch parts 5d, 5d of the recessed part 5b. By this constitution, the injection member 18 is always pulled and energized to a rear plate 3b.

Description

[Detailed description of the invention] The invention will be explained in the following order.

A. Industrial field of application 13. Outline of the invention C. Problem to be solved by the prior art E. Means for solving the problem F1. Effect G. Example G1. Overall number of grooves G in the printer, paper feed section key 741 G 3.9 joint edition (tray and its
4141 G4 paper feed mechanism and paper pickup system 4141 G5 paper ejection 1 and a half 7 and paper ejection tray,,') defeat C, head movement (te 9 (sound (1° G, ribbon cart, horn storage) Part configuration G B , drive system 7) 11 G9.rr<U switch iQ +ii 9 i1'i
Formation G, o, 1 blood example effect I (to the effect of the invention g, g The present invention relates to a printer such as a thermal head (thermal transfer method 8 that performs color printing using a print head or rad) through an ink printer.

B1 Summary of the Invention The present invention provides a printer that prints on print paper using a printing section within the printer body, and a tray that is detachably provided in the printer body and that holds the print paper, and a tray that abuts the tip of the tray. and an ejecting member that feeds out the tray so as to expose it to the outside of the printer main body when ejected, and an upper elastic member that constantly catches and biases the ejecting member in a direction in which the tray is exposed from the printer main body. This makes it possible to reliably obtain the sufficient stroke necessary for ejecting the tray of the printer body, which has been designed to be thin, and allows the tray to be pulled out straight. .

C1 Prior Art For example, a printer is known in which printing paper fed from a paper feed tray is wound around a platen, and a thermal head prints on the printing paper via an ink ribbon. The schematic structure of this printer will be explained in detail with reference to FIGS. 38 and 39. Reference numeral 200 is a printer main body, and a paper ejecting section 202 and a paper discharging section 202 are located in the upper and lower positions facing the printing section 201 in the printer main body 200. Paper feed units 203 are arranged respectively. A paper feed roller 20 serving as paper feeding means is located between the paper ejection section 202 and the paper feeding section 203 near the paper feeding section 203.
4 is provided, and the paper feed section 203 is provided with a printer).
Paper feed tray 20 having a sliding bottom plate 206 on which paper 205 is placed
7 is detachably provided.

This paper feed tray 207 is inserted into the back of the paper feed section 203 in the L printer main body 200 when installed, and when ejected, the front end side (back side) of the paper feed tray 207 is compressed by a compression coil spring. It is designed to be pulled out by an ejecting section (not shown) that is pushed out by force.
When feeding the paper, as shown in FIG.
The uppermost print paper 205 stacked with the paper facing upward is rotated two times so that the back side is pressed against the paper feed roller 20.1, and when the paper is ejected, the uppermost one is - to 1
The back side of the second print paper 205 is rotated downward so as to separate from the paper feed roller 20.1.

Then, the print paper 2 is conveyed to the platen 208 of the printing unit 201 by the two-leg paper feed roller 204 and is stuck to the platen 208 via the pinch roller 209 or the like.
05, while the platen 208 rotates three times in the direction of the arrow shown in FIG.
Printed via ink ribbon 2+1 from 01,
When discharging the paper, avoid rotating the platen 208 in the same direction as above, as shown in FIG.
2, the paper is discharged to the paper discharge section 202 and stacked.

D Problems to be Solved by the Invention However, since the ejection mechanism of the paper feed tray 207 of a conventional printer uses the compressive force of a coiled coil, the paper feed section is 203 and the paper feed tray 207 become thinner, the diameter of the compression coil spring becomes smaller, and in order to take a sufficient pull-out stroke of the paper feed tray 207,
The length of the compression coil spring must be made longer, and if the diameter of the IF compression coil spring is made smaller and the length is longer, the compression coil spring will not bend straight when ejecting, but will tend to warp in the middle, and the paper feed tray It is not possible to obtain a sufficient stroke without pulling out the paper feed tray 207, and the paper feed tray 207 cannot be pulled out immediately.

Therefore, the present invention utilizes a tensile force produced by a tensile elastic member instead of a compressive force to generate a pulling force for ejecting a tray such as a paper feed l. We present a printer that can obtain a long draw stroke.

[Means for solving the problem] A tray that is detachably provided in the printer body and on which the print paper is placed, an eject member that comes into contact with the tip of the tray and pulls out the tray from the printer body, and this eject member. The printer is provided with a tensile elastic portion that always biases the member in a direction in which the tray is pulled out from the printer main body.

Even if the diameter of the F1 action tensile elastic part H is made small and its length is made long, the tensile force necessary to push out the ejecting part 10 when the tray is ejected can be reliably obtained, so even a thin tray can be used. The drawer stroke is (slipped).

Embodiment G7 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Overall configuration of the printer 1 in Fig. 17 is a thermal transfer type color printer, and the printer main body 2 includes a rectangular frame-shaped inner yarn 3 and a rectangular box 3. It is roughly composed of a mold case 71. As shown in Figure 2,
On the right side of the front (front) of the printer main body 2, there are a shelf-shaped paper feed l/ray receiver (paper feed section) 5 and a paper ejection l/ray receiver (paper ejection section) 6, and a printing section located on the left side. They are placed on the lower side and on the 2nd side facing 7.

A printing section 7 is located between the front plate 3a and rear plate 3b of the inner shear 3 below the paper feed tray receiver (15) of the printer main body 2.
A paper feeder hW that conveys bullet paper 8 one sheet at a time up to
O is rotatably (swingably) supported via its drive shaft +1, and a printing section is provided between the 011 provisional 3a of the shear 3 between the printing section 7 and the discharge tray receiver 6 and the rear plate 3h. The printed paper 8 printed from 7 is sent out to the paper discharge tray holder (10 side).

In addition, Ifz in front of Noyano 3 in the approximately middle part of the printing section 7
3a and the rear plate 3b, the platen 1 is rotatably supported via a support shaft 15. This platen 1 = 1
The printing section 7 on the lower side of the printer is located in the ribbon cartridge storage section I6.

Incidentally, as shown in FIG. 17, the paper discharge tray receiver 6 is
A part of the front right side of the outer yarn 4 of the printer main body 2 is exposed, and the paper feed tray 5 ripple-I: cartridge storage section 16 is exposed at the lower right front side and left side of the outer yarn 4 of the printer body 2. It is covered with a cover 1a and a cover 4b which are supported so as to be openable and closable.

As shown in Fig. 2.5, the paper feed tray holder (paper feed section) 5 is made of synthetic resin and formed into a rectangular plate shape, and the inner yarn 3 of the G2 paper feed section is made of synthetic resin. It is arranged between the front plate 3a and the rear plate 3b, and is fixed with screws or the like to the second part of the open "second part 3c" which opens at the center right side of the front plate 3a.

There are 11
A pair of opposing U-shaped hook portions 5a, 5a are integrally molded. A paper feed tray 20, which will be described later, is removably housed in the pair of hook portions 5a, 5a.

Further, as shown in FIG. 5.6, a rectangular recess 5b recessed downward is formed in the center of the biped paper feed tray receiver 5. A pair of guide grooves 5c, 5c are formed in the longitudinal direction of this recess 5b (direction perpendicular to the rear plate 3b of the inner palm 3). Then, an eject member 18 for feeding out a part of the paper feed tray 20 so as to be exposed to the outside of the printer main body 2 is attached to the back surface of the bipedal recess 5b so that it can freely slide into the pair of guide grooves 5c5c. It is a CF established in The ejecting member 18 is made of synthetic resin and has a plate-like shape with a vertical U-shape and an 11-shape side, as shown in FIG. That is, a pair of upright portions 18a, 18a are protrusively molded on both sides of the ejecting portion +4'+8 to be inserted into the pair of kite grooves 5c, 5c, respectively. Also, the Jλ end portion 18b of the pair of upright portions 18a, 18a, the IS
The b side is further molded to protrude outward in an L-shape so as to slide on the upper surface of the four parts 5b. As a result, the eject part (O18 is part 1, the tip y1 hanging down to the letter J%9)
° With the hook il 8c that comes into contact with the tip of the paper feed tray 20 on the 1J side hanging down on the back surface of the recess 5b, slide back and forth for a predetermined stroke along the pair of guides 5c and 5c. It's free.

Further, a pair of base end portions 18b of the ejecting member 18,
+8b L-shaped notch 18d, +8d and the recess 5
A pair of notches 5d, 5 on the rear plate 3b side of the chassis 3 in b.
A pair of tension coil springs (tensile elastic members) are connected to
19.19 was interposed. As a result, the ejecting member 18 is always pulled and biased toward the rear plate 3b.

Structure of the G3 paper feed tray and its lock mechanism As shown in FIG. 7, the paper feed tray 20 is made of synthetic resin and is formed into a rectangular box shape with a completely open top that is slightly larger than the print paper 8. - A pair of hook portions 5 of the paper feed tray receiver 5 with the flange portion 21a of the side portion 21 and the flange portion 2+a of the other side portion 22
a, 51, so that it can be freely attached to the paper feed tray receiver 5. From the center of the bottom 23 of the paper feed tray 20 to the negative side 2I, the paper feed tray 2
An opening 24 is formed to expose about half of the back side (the opposite side of the printing surface) of the print paper 8 set in the paper.

Further, the front portion 25 side of this paper feed tray 20 is a gripping portion. Inside this curved part 25 and inside the tip part 26 facing the front part 25, there is a pair of holes for feeding the lowest print paper 8 placed on the bottom part 23 one by one to the printing part 7 side. Each base 272L of the delivery lever 27.27 is pivotally supported by a bottle. The claws 27b, 27b bent and formed on the tip side of the pair of feed levers 27.27 are connected to the paper feed tray 2.
The print paper 8 is printed one sheet at a time by placing the bottom corners of the print paper 8 on the opening 211 side. It is decided whether to send it to the section 7 side or not.

Furthermore, a locking portion 28 is formed on the front end portion 26 side at the center of the back surface of the bottom portion 23 of the paper feed tray 20 .

The locking portion 28 has a long tapered surface 28a inclined at an angle of approximately 45 degrees with respect to the tip portion 26, a square-shaped front portion 28b, and a short tapered surface 28c that protrude in a substantially triangular shape. The paper feed tray 20 that is engaged with and disengaged from the locking portion 28 and attached to the paper feed tray receiver 5 is disposed on the rear plate 3b side of the inner tray 3.
A locking mechanism 30 is provided for maintaining the attached state and releasing the attached state.

As shown in FIG. 8, the locking mechanism 30 includes a substantially dogleg-shaped locking plate 32 rotatably supported via a shaft 31 on a notched bent horizontal portion 3d of the rear plate 3b, and Board 3
A lock bin 33 is provided upright on one end 32a of the second paper tray receiver 5, and a hook portion 3 is provided on the other end of the lock plate 32.
2b is inside the rear plate 3b.
It is composed of a tension coil spring 34 that urges rotation.

As a result, when the front part 25 of the paper feed tray 20 is inserted into the paper feed tray receiver 5 while pushing the front part 25 of the paper feed tray 20, the lock plate 32 resists the tensile force of the tension coil spring 34 as shown in FIGS.
The lock bin 33 is rotated as shown in c), and the lock bin 33 is connected to the paper feed tray 20.
The attachment is locked by being engaged with the 7-shaped surface 28b of the engagement portion 28. In order to release the mounting lock state, by further pressing the curved portion 25 of the paper feed tray 20, the lock bin 33 is locked as shown in FIGS. 20(d) and (e). When the part 11 is removed from the ■-shaped front 28b of the part 28, the mounting lock is released.

G4. Configuration of 11 Paper Feeders and Paper Feeding System As shown in Figures 9 and 10, the lowest printing paper 8 of the paper feeding tray 20 attached to the printer main body 2 is transferred to the printing section 7.
The paper feeder 4M I O that conveys the paper to 3G, a rotating shaft 37 that revolves through 3G, and a rotating shaft 37 fixed to this rotating shaft 37, the printing section 7 and the printing section 8 are
A rubber paper feeding roller (paper feeding means) 38 that conveys sheets one by one, and three limiters that are interposed on both sides of the paper feeding roller 38 between the drive shaft 11 and the rotating shaft 37 to control the torque of the rotating shaft 11. It is roughly composed of.

These three limiters are connected to each of the arm members 36 rotatably supported by the drive shaft +1 and the drive gears 10 fixed to the drive shaft II inside the six-arm member 36.
A first limiter 41 consisting of a compression coil spring interposed therein;
A second limiter 4 interposed between the arm member 36 and the driven gear 12 provided on the rotation shaft II inside each arm member 36 and meshing with each drive gear 4o.
It consists of 37.

Each of the second limiters 13 is fixed to a rotating shaft 37; a limiter rotating shaft 45 rotatably supports the driven gear 12 by sandwiching a cooled felt 44; and each arm member of the limiter rotating shaft 45. A felt 47 is provided between the spring presser 46 rotatably supported on the 36 side and the driven gear 42 on the 12 side of the limiter rotating shaft 45.
A felt presser 18 is rotatably supported between the spring pressers 16 and 48, and a compression coil spring is interposed between the spring presser 16 and the felt presser 48.

The first limiter 41 is configured to control the torque of the pair of arm members 36 and 36 around the drive shaft 11, and also controls the paper feed [1-ra 38 and the print paper 8]. It is controlled by the force required to lift its own weight.

Further, the second glue limiter 43 is adapted to control the torque of the paper feed roller 38, and is also controlled to the force necessary to separate and convey the print paper 8. still,
The pair of arm portions H36, 36 are prevented from being removed by respective washers 5o. Further, the pair of arm members 36
．． On the side of 36, there is a pair of delivery levers 27. 27 of the rm paper feed tray 2°, e1m 27' c 1. : Attach the corresponding temporary parts 51 to each other. This −χ1
Due to the elastic biasing force of the temporary springs near 1 and 5+, the claw portions 27b and 27b of the pair of delivery levers 27 and 27 are always pressed against the print paper 8 set on the bottom 23 of the paper feed tray 2o. .

As shown in FIG. 1, a temporary inner paper guide 52 made of synthetic resin as a paper feed guide member is arranged to extend from the iQ paper feed roller 38 in the inner yarn 73 to one circumferential surface of the platen 1. It is. Furthermore, a paper feed tray (a metal 1-vapor guide temporary 53 is provided between the tray 5 and the platen 14).
The arrangement is as follows.

” There is an opening above the platen 14 in Nyano 3 within two feet [-
Attach the synthetic resin attachment frame 54 that constitutes one part; Y. This mounting frame 5.1 has an IW of the platen 14 marked L.
A synthetic resin vapor guide plate 55 as a guide part I4 is installed in F. This vapor guide V255 is perpendicular to the platen 14 side in an arc shape. A plurality of ribs 55a extending from (J') are provided. Between the pair of ribs 55a, 55a located in the middle, there is a pinch roller 56 corresponding to the platen l=1!
It is rotatably supported via +1157.

Further, the upper surface side of the paper guide 55 is covered with a plate-shaped cover body 58 made of gold metal, which is engaged with and detached from the upper edge of the 11-piece temporary 3a of the inner yerso 3 and the upper edge of the rear plate 3. It looks like this. That is, one end side of this lid body 58 is connected to a pair of retainers 1 of the rear plate 3b.
1- It is inserted into the holes 3e, 3e, and has an H shape at the locking opening, while five U-shaped locking pieces made of synthetic resin are fixed to the other end. A pair of claw portions 59a are formed on the distal end side of this stopper 59.

By engaging and disengaging 59a at a predetermined position on the upper edge of the plate 3a, the eleven bodies 58 can be attached to and detached from the printer main body 2.

In addition, as shown in FIG. 17, a rectangular opening 4c is formed from the outside 4 corresponding to the bipedal lid 58. This 1i7J mouth:';'JI 4 c! J-shaped 2
Part 1 d closes 1jlJ ([Na-tiro G5 paper ejection section and paper ejection tray configuration As shown in Figure 1.2, the oII paper ejection tray 6 is M A rectangular box!νpl (- is formed by hand-making the J n Lk seedlings, and the right side - between the front plate 3a and rear plate 3b of the inner yarn 3) It is attached at a predetermined position.The bottom of this paper output tray holder 6 is
It contributes to the bottom part Ga and 6b of the height of the step, and then 'J2
The high bottom 6a on the 3b side is the first paper discharge position, and the low bottom 6b on the front plate 3λ side is the second paper discharge position.

A pair of vertically elongated openings 6d6d are formed approximately at the center of the high bottom portion 6a of the paper discharge tray receiver 6, and extend from the rear edge of the bottom portion 6a to the top of the rear portion 6c standing vertically. A pair of paper push-out portions 60a, 60U formed protruding from the tip of a substantially U-shaped paper discharge push-out pawl 60 are provided in the pair of openings 6d, 6d so as to be freely retractable. That is, the base end lower part 60b of the paper ejection pushing claw 60 is connected to the front plate 3a and the rear plate 3b.
The mounting plate 9 attached therebetween is rotatably supported by the bin 9a. Also, a bin 61 is embedded in the rim part of the paper ejection push-out claw 60 and projects horizontally.

As a result, the pair of paper extrusion parts 60a, 60a of the paper ejection extrusion claw 60 rotate around the bin 9a of the mounting plate 9, and protrude above the high bottom part 6a from the pair of openings 6d6d. It looks like this. Furthermore, a horizontal guide piece 6e for guiding the ejected print paper 8 is protruded from the rear portion 6c. Further, the bin 6I protruding from the base of the paper ejection pushing claw 60 is linked to an actuation plate (25) to be described later via a slide plate 621 and a rotating plate 63, so that the slide plate 62 can move backward by 1171. As a result, the pair of paper extrusion parts 60a, 60a of the paper discharge extrusion claw 60 are adapted to appear and retract into the pair of openings 6d, 6d.

Further, as shown in FIG. 1, a paper discharge tray 64 is removably housed on the low bottom portion 6b of the paper discharge tray receiver 6. As shown in FIG. Further, above the upper paper guide plate 53, a pair of upper and lower paper guide plates 65 and 66 are arranged at the upper edges of the city I plate 3λ and the rear plate 3b of the inner palm 3. Below this lower paper guide plate 66, a pinch roller 67 which is in contact with the platen 14 is rotatably supported via a support shaft 68. The printed paper 8 to be printed and discharged is inserted between these upper and lower paper guide plates 65 and 66, pressed against each of the paper discharge rollers 12, and stacked on the paper discharge tray 64. Note that print paper 8 is placed near the platen 14 of the lower paper guide plate 66 and the upper paper guide plate 53.
A light reflection type bevel sensor 69 is arranged to detect the edge of the print head and determine the start of printing.

Go, Structure of Head Moving Mechanism As shown in FIG. Head moving mechanism 7
1 is arranged.

As shown in FIG. 11, this head moving mechanism 71 has a support shaft 7 which is connected to the front plate 3a and rear plate 3b of the inner yarn 3.
a head support member 73 that is swingably supported by the thermal head 2 and to which the thermal head 70 is fixed;
a sub-head support member 75 which is pivotally supported together with the head support member 73 on the support shaft 72 on both sides thereof, and has a pair of compression coil springs 76 and 76 interposed between the heat sink 74 of the thermal head 70 and the bottom plate portion 75a; A pair of links 77.77, one end of which is pivotally supported by a pin on both sides of the tip of the sub-head support part 75, a recess 79a at the tip of a pin 78.78 protruding from the other end of the pair of links 77.77; 7
9a engages with the drive arms 79.79 to swing the head support member 73 and sub-head support member 75 toward the platen 14;
The target board 3a of the inner yarn 3 is penetrated and fixed through the base of the inner yarn 3.
And after! It is roughly composed of a drive shaft 80 rotatably supported by the ff3b, and a ribbon roller 82 rotatably supported on both sides of the sub-head support member 75 via a pair of L-shaped auxiliary arms 81, 81. has been done.

As shown in FIG. 12, the head support member 73 is formed into a U-shaped plate, and has insertion holes 73a; It is. The various through holes 732L are formed as elongated holes extending in the direction of the head pressing force of the platen 14, so that the head support member 73 can freely move toward the platen 14. As a result, the thermal head 70
self-alignment can be easily achieved. Further, the head pressure of the thermal head 70 at this time is applied by the pair of compression coil springs 76 and 76 when the head support member 73 is pressed against the platen 14 by each drive arm 79 using the support shaft 72 as a fulcrum. It has become. Due to the biasing force of the pair of compression coil springs 76.7G, the front support member 73 swings upward and toward the platen 14, but is regulated to a predetermined value by the flanges 75b on both upper edges of the sub-head support member 75. It has become.

The ribbon roller pressure of the two-legged ribbon roller 82 is applied separately from the head pressure by a tension coil spring 83 interposed between each of the auxiliary arms 81 and the sub-head support member 75.

Structure of G7 Ribbon Cartridge Storage Section As shown in FIG. 1, the ribbon cartridge storage section 16 has a space in which a ribbon cartridge 85 can be stored. This ribbon cartridge 85 has a Y (
Yellow) 1M (Magenta).

It rotatably supports a supply ribbon reel 87 and a take-up ribbon reel 88, around which an ink ribbon 86 having a continuous colored area consisting of C (cyan) colored portions is wound. Incidentally, the beginning of the Y color of the ink ribbon 86 is detected by a light transmission type sensor 89. This transmission type sensor 89 is composed of a light emitting section 89a and a light receiving section 89b.

The ribbon cartridge storage section I6 is provided between the front plate 3a and the rear plate 3b of the inner chassis 3.
It is generally composed of a holding plate 90 and a lower holding plate 91 that holds the take-up ribbon reel 88 side of the -2 ribbon cartridge 85. The above-mentioned Moe Vi, 3a is provided with an insertion opening 92 for the ribbon cartridge 85, and -1
(d) A driven reel stand 93 for supply and a drive reel stand 94 for take-up are attached diagonally upward and downward to the rear plate 3b, respectively.

As shown in FIG. 15, the supply driven reel stand 93 and the winding drive reel stand 94 have a cross section of 1. Shape mounting plate 9
Each shaft 96.5 protrudes inward from the rear plate 3b fixed to the rear plate 3b.
97, and each has a limiter gear 9899 between the mounting plate 95 and the rear plate 3b. In addition, each of the reel stands 93 and 94 has a rear plate 3.
Reel claws 93a and 94λ that engage with the feeding ribbon reel 87 and take-up ribbon reel 88 of the ribbon cartridge 85 are protrudingly provided on the inner side of the ribbon cartridge 85, respectively.

G6. Drive system configuration As shown in FIGS. 3 and 16, the drive shaft 11 of the paper feed mechanism 10
and the support shaft 13 of the paper ejection roller 12 and the support 11 of the platen 14.
A paper feed roller drive gear 100, a paper discharge roller drive gear 101, and a platen drive gear 102 are fixed to each end of the inner shear 3 outside the rear plate 3b of No. 5, respectively.

The paper feeding drive gear +00 meshes with a small diameter intermediate gear 104 via a large diameter intermediate gear 103.

This small-diameter intermediate gear 104 has a driving force switching mechanism +
40, the first shift gear 107, which is always biased outward via the compression coil spring 106, moves from the neutral state to the inside (rear plate 3b (1111) The first shift gear 107 is configured to engage when the first shift gear 107 is moved to the outer side,
The large diameter gear of the intermediate gear 108 is configured to move back to the neutral and inner three bodies, and is made up of a large diameter gear part 108 and a small diameter gear part 108b meshing with the platen drive gear I02. It meshes with the portion 108a.

The large-diameter gear portion 108a of the intermediate gear 108 is connected to a second drive force switching mechanism 150, which will be described later, and a second driving force switching mechanism 150, which is constantly biased outwardly to the shaft 109 via a compression coil spring 110.
The small diameter gear portion 111a of the shift gear 111 meshes with the small diameter gear portion 111a. The large-diameter worm gear portion 111b of the second knot gear II+ is configured such that the second shift gear 111 is moved inward (toward the rear plate 3b side) against the compression force of the compression coil spring 110 by the second driving force switching mechanism 150. When moving, stepping motor (second drive source) + 12 worms 1
It is designed to mesh with 13.

Furthermore, the small diameter gear portion 11 of this second shift gear 111
1a is meshed with the paper ejection roller drive gear 101 via a pinion 114.

Further, when the first shift gear 107 is moved outward by the compression force of the compression coil spring 106 by the drive force switching mechanism 140, it engages with the limiter gear 99 of the take-up drive reel stand 94 via the intermediate gear 115. The winding drive reel stand 94 is prevented from rotating.

A head drive gear 12 is mounted on the end seat of the drive shaft 80 of the head moving mechanism 71 on the outside of the rear plate 3b of the inner chassis 3.
It is fixed at 0. This head drive gear 120 meshes with the small diameter gear portion 121b of the head idler gear 121, which consists of a large diameter gear portion 121a and a small diameter gear portion 121b. Large diameter gear portion 121 of this head idler gear 121
A is in mesh with the small diameter gear part +24b of intermediate gear +2,1, which is composed of a large diameter worm gear 124a that meshes with the worm 123 of the stepping motor (first drive source) 122, and a small diameter gear part +24b, and is in mesh with the small diameter gear part +24b of the intermediate gear +2,1. It is rotatable by the driving force of 122.

At a predetermined position on the side surface of the head drive gear 120 on the side of the rear plate 3b, there is an actuating plate 12 that rotates the ejection sheet pushing claw 60.
A pin 126 protruding from one end of 5 is inserted and engaged.

The actuating plate 125 is formed into a long L-shaped plate, and pins 127 each have long holes 125a, +25b, and 125c formed long in the longitudinal direction on both sides and the upper part of the rear plate 3b. , 128, 129 are inserted through the support so that it can be reciprocated in the longitudinal direction.

Further, a rotating plate 63 of the discharge sheet pushing claw 60 is supported by a pin on the upper bent portion 125d of the operating plate 125. As a result, the actuating plate 125 moves back toward the head drive gear 120, as shown by the two-dot chain line in FIG. The high bottom part 6a of the paper output tray receiver 6 is inserted into the pair of openings 6d, 6d of the paper output tray receiver 6 and moved forward as shown by the solid line in FIG. It is designed to protrude above.

Further, an eject stopper (M The base of the stop means) 130 is pivotally supported. This eject stopper 130 is formed in the shape of an arm plate, and a pin +31 protruding from the actuating plate +25 is inserted into and engaged with a long hole 130a formed in the longitudinal direction at the center thereof. As a result, as the actuating plate 125 moves back and forth, the eject stopper 130 swings as shown by the solid line and the two-dot chain line in FIG. By holding the hook portion 32d of the lock plate 32 in a protruding shape, the paper feed tray 20 that is attached to the printer main body 2 and locked by the lock mechanism 30 can be locked when feeding paper, printing, etc. It is designed to prevent release.

Further, the large diameter gear portion 12 of the helad idler gear 121
The outer surface of 1a has a protrusion l 21 c,! l: V-shaped cam surface! 21d and a recess 121e are formed respectively. Base end portions 132a and 133a of brake arms 132 and 133 for the driven reel stand for supply and the driving reel stand for winding are in contact with the protrusion 121c and the cam surface 121d. Each of these brake arms 132. +33
It is formed in a dogleg shape, and each support shaft has +34. It is rotatably supported via [35]. Also, each brake arm 1
Tension coil springs 137 and 138 are interposed between the base of 32 and 133 and a support shaft 136 that rotatably supports the helaid idler gear 121.
b, 133b mesh with the limiter gear 98.99 of each of the above-mentioned roll bases 93.94.

They are free to defect.

Gs, configuration of drive horn switching mechanism The drive force switching mechanism 140 includes a small diameter gear portion +41 that meshes with the head idler gear +21, and a cam surface 1 having an uneven surface on one side.
A cam gear +43 consisting of a large-diameter cam part +42 having a diameter il, 2a, and a rod-shaped support part 145a are rotatably attached to a U-shaped mounting plate l. Supported at one end! 45b side is the above cam gear 1
The plate spring portion 1 on the other end side contacts the cam surface 1.12a of 43.
．． 16 is brought into contact with one side of the first shift gear 107 β, and the temporary spring if<
The shift lever 145 moves the shift gear 107 to three positions: outside, neutral, and inside at t-16.

1- A pair of pin portions 141a, 141a are protruded from one side of the small diameter gear portion 141 of the cam gear 143. A spring 148 is attached to the U-shaped mounting plate 147 fixed to the pair of bin portions 141a and +4121 for temporary mounting.
The base 149a of the 17-shaped lock arm 149, which is rotatably supported through the base 149, is in contact with the base 149a of the lock arm 149, which is rotatably supported by the lock arm 149. This J, (the part 149a is the pair of focus lla, 141
a, the claw portion 1/19b, which was engaged with the inscription supply driven reel stand 93 at the tip against the biasing force of the spring 148, locks the limiter gear 98 of the reel stand 93 Ll: The reel stand 93 is separated from the portion 98a and rotates.

The second driving force switching mechanism 150 is a head idler gear 1
The hook-shaped tip 15 is inserted into and separated from the recess 121c of 21.
1a and form a hole 151b in the center, and
A U-shaped operation lever +51 with a bottle portion 151c protruding from the hole, and a U-shaped operation lever 51 with a U-shaped operation lever 51, and a U-shaped operation lever 51 with a U-shaped operation lever 151, which is pivoted into the operation lever 151, and a bottle portion 1 projecting upward and downward from the central portion.
Operate one side of 52b by one foot /<-1510'r hole 1
51b1. : The other bottle part 151b is pivoted to the mounting plate 95 as shown in FIG. The portion 153c is rotatably supported, one end portion 153a thereof is inserted into and engaged with the elongated hole 1521 of the intermediate operation lever 152, and the temporary spring portion 15 on the other end side is
3b is brought into contact with one side of the second shift gear 111, and the temporary spring portion 15 is rotated by rotating the operation lever 151.
3b and a shift lever 153 for moving the shift gear 111 to the inner two positions.

According to the printer 1 of the embodiment, as shown in FIG.
As shown in FIG.
The paper feed roller 38 of O is tilted downward, and the paper ejection pushing claw 60 projects above the high bottom portion 6a of the paper ejection tray receiver 6. At this time, as shown in Figure 27.28,
The first shift gear +07 is in a neutral position, and the second shift gear III is located in a position away from the worm 113 of the stepping motor 112.

From this state, as shown in FIGS. 18 and 19, when the paper feed tray 20 is attached to the paper feed tray receiver 5, the paper feed tray 20 is attached to the lock mechanism 30 as shown in FIG. 20(c).
will lock it in its equipped state. At this time, the hook portion 32b of the locking device tM 30 protrudes outward from the rear plate 3b, as shown in FIG. Then, when a print button (not shown) is pressed, the stepping motor 122 is driven, and the head drive gear 120 and the like are rotated. Due to the rotation of the head drive gear 120, etc., the first shift gear 107 shifts to the drive force switching mechanism 1, as shown in FIGS. 29 and 30.
40 to the outer position and intermediate gear 115
is engaged with the limiter gear 99 of the take-up drive reel stand 94 through the drive reel stand 94, and by driving the take-up drive reel stand 94, as shown in FIG. The second shift gear 111 is switched between the stepping motor +12 A- by the second driving force switching mechanism 150.
The platen 147 and paper ejection roller 12 are engaged with the roller 113.
rotates (the second shift gear If1 remains in this position until the paper is ejected). When starting the ink ribbon 86, the brake arm I of the supplying driven unit 93
32. Lock arm 149 and take-up drive reel stand 94
The brake arm 133 is turned off, and the beginning of the ink ribbon 86 is smoothly performed. Further, the actuating plate 125 is moved forward by the head drive gear +20, and the eject stopper is applied to the hook portion 32b of the locking mechanism 30. 30
is locked, making it impossible to unlock the paper feed tray 20 from the locked state. This prevents the paper feed tray 20 from being accidentally removed during subsequent paper feeding, printing, and the like. Furthermore, due to the forward movement of the actuating plate 125, the discharge paper pushing claw 6
The pair of paper extrusion parts 60a, 60a of 0 are inserted into the pair of openings 6d, 6d of the rear part 6C from above the high bottom part 6a of the paper discharge tray receiver 6. The paper ejecting push-out claw 60 remains in this state until the paper is ejected.

The stepping motor 122 drives the first shift gear 107 via the driving force switching mechanism 140 and the like.
, as shown in FIG. 31, moves to the inner position and meshes with the paper feed roller drive gear 100 of the paper feed mechanism 10 via the intermediate gears 103, 104. As the paper feed roller drive gear 100 rotates, the paper feed roller 38 moves upward and the paper feed tray 20 moves upward, as shown in FIGS. 22 and 24.
It is pressed against the back surface of the lowest printing paper 8 exposed through the opening 24 of the paper. The print paper 8 is then fed to the platen 14 by the rotation of the paper feed roller 38 . Note that during this paper feeding, the brake arms 132, 133 and the lock arm 149 are in the on state.

The print paper 8 that has reached the platen 14 is wound around the circumferential surface of the platen 14 with both ends of the print paper 8 overlapping as the print 14 rotates in the direction of the arrow in FIG. Furthermore, this print paper 8
When loading, the first shift gear 107
As shown in FIG. 33, it is located in a neutral position.

This completes the series of paper feeding operations.

Next, stepper motors! 22 rotates the head drive gear 120, the thermal head 70 is moved by the head moving mechanism 71 and presses the ink ribbon 86 against the platen 14, as shown in FIG. At this time, as shown in FIG. 35, the first shift gear 107 is located at the outer position, similar to when the ink ribbon 86 is started, and rotates the take-up drive reel stand 94. At this time, the brake arm 133 and the lock arm 149 are turned off, but the brake arm 132 remains on, and an appropriate brake is applied to the supply driven reel stand 93 during printing to prevent it from idling, and the ink ribbon Appropriate pack tension is given to 86. From this state
(yellow), 9M (magenta), and C (cyan) printing.

When printing on the print paper 8 is completed, as shown in FIG. 26, the platen 14 rotates in the opposite direction to the paper feeding direction, and the paper is conveyed and ejected onto the paper ejection tray receiver 6 by the paper ejection roller 13, and then the paper is ejected to the rear part. 6c and guide piece 6e, and is set on the high bottom 3a of the paper discharge tray receiver 6. At the time of paper ejection, as shown in FIG. 33, the first shift gear 107 is in a neutral position, and only the platen 14 and the paper ejection roller 13 are rotated by the driving of the stepping motor 112. Thereafter, as the actuating plate 125 moves back, the ejected paper pushing pawl 60, which is interlocked with the actuating plate 125, returns to the position with the pair of paper pushing parts 60a, 60a, and protrudes from the pair of openings 6d, Gd. As a result, the printed paper 8 set on the high bottom portion 6a is pushed out onto the paper discharge tray 64, and the paper discharge operation is completed.

When the paper feed tray 20 is to be ejected after this ejection is completed, when the front part 25 of the paper feed tray 20 is pressed, the locking mechanism 30 is activated as shown in FIGS. 20(d) and (e). The lock bin 33 is attached to the V of the locking portion 28 of the paper feed tray 20.
The ejecting member 18 is removed from the gap 28b between the characters, and moves toward the target plate 32L of the inner chassis 3 along the pair of guides 1M5c, 5c of the paper feed tray receiver 5 due to the tensile force of the pair of tension coil springs 19, [9. This eject member 1
8, the paper feed tray 20 is pulled out with a sufficient stroke, and its front portion 25 side is sufficiently pulled out from the opening 3C side of the inner yarn 3.

In this way, when the paper feed tray 20 is ejected, by using the tensile force of one of the pair of tension coil springs 19, the pair of tension coil springs 19 are placed in a narrow space on the second side of the paper feed tray receiver 5. , 19 can be disposed, and a sufficiently long stroke necessary for pulling out the thin paper feed tray 20 can be taken. Further, since the eject member 18 moves along the pair of guides i5c, 5c of the paper feed tray receiver 5, the paper feed tray 20 can be straightly ejected. Furthermore, as shown in FIG. 19, the hook portion 18c of the eject member 18 is adapted to come into contact with the rear plate 3b of the inner chassis 3, so that when the sheet feed tray 20 is locked in the installed state, , or when releasing the lock, the automatic stroke of the paper feed tray 20? t is regulated. Therefore, no unreasonable force is applied to the lock pin 33 of the biped lock mechanism 30.

In the above embodiment, the tension coil spring 19 is used as the tension elastic member, but the invention is not limited to this, and any tension rubber member in the shape of an elastic band may be used. Also, the tray is paper feed tray 20
It goes without saying that the present invention is not limited to, but can be applied to paper discharge trays.

11. Effects of the Invention As described above, according to the present invention, the pulling force for ejecting the paper feed tray is performed by the tensile force of the tensile elastic member that can be arranged in a narrow space. Once it is straight, it can be pulled out with enough stroke to eject.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts of the printer main body of a printer showing an embodiment of the present invention, FIG. 2 is a perspective view of the main parts, and FIG.
The figure is a rear view of the same, Figure 4 is a schematic side view of the same, Figure 5 is a plan view of the paper feed tray holder, Figure 6 is a sectional view taken along the line Vl-Vl in Figure 5, and Figure 7 is a paper feed tray holder. A perspective view of the tray, FIG. 8 is a perspective view of the main part of the lock part of the paper feed tray, FIG. 9 is a perspective view of the paper feed mechanism, FIG. 10 is a sectional view of the paper feed mechanism, and FIG. 11 is a head moving mechanism. (Partial perspective view of 1), Figure 12 is a schematic perspective view of the main parts of the head moving mechanism, Figure 13 is a side view of the head moving mechanism (2), Figure 14 is a rear view of the head 4 hypermotion mechanism, 15
The figure is a plan view of the ribbon cartridge drive system, FIG. 16 is an exploded perspective view of the entire drive system, FIG. 17 is a perspective view of the entire printer, and FIG. 18 is a sectional view without showing the state in which the paper feed tray is being installed. FIG. 19 is a cross-sectional view showing the mounting state of the paper feed tray, and FIGS. 20(a) and (b). (c), (d), and (e) are explanatory diagrams showing the locking and unlocking of the paper feed tray in sequence, Figure 21 is an explanatory diagram showing the state before paper feeding, and Figure 22 is an explanatory diagram showing the state before paper feeding. FIG. 23 is a schematic diagram showing the state of the ink ribbon, FIG. 24 is a schematic diagram showing the paper feeding state, FIG. 25 is a schematic diagram showing the printing state, and FIG. 26 is a schematic diagram showing the state of the ink ribbon. A schematic explanatory diagram showing the time of paper ejection, Fig. 27cO is a bottom view of the main parts of the drive system at the initial stage, Fig. 28 is a side view of the main parts of the drive system at the initial stage, and Fig. 29 is the drive system at the beginning of the ink ribbon. A bottom view of the main parts, Fig. 30 is a side view of the main parts of the drive system when the ink ribbon is brought out, Fig. 31 is a bottom view of the main parts of the drive system when feeding paper, and Fig. 32 is a side view of the main parts of the drive system when feeding paper. A side view of the main parts, Fig. 33 is a bottom view of the main parts of the drive system during loading and paper ejection, Fig. 34 is a side view of the main parts of the drive system during loading and paper ejection, and Fig. 35 is the drive during printing. Figure 36 is a bottom view of the main parts of the system, and Figure 36 is a side view of the main parts of the drive system during printing.
Figure 7 is a schematic explanatory diagram of jamming of printed paper, No. 38
FIG. 39 is a schematic diagram showing the paper feeding state of a conventional printer, and FIG. 39 is a schematic diagram showing the paper discharging state of the conventional printer. 1...Printer, 2.Printer main body, 8.Print paper, 1.Effect member, 19..Tension coil spring (tensile elastic member), 20..Tray, 26. Figure 5. Figure 6. 1st drawing of Ma γ 1 L Yi, drawing by 7th Fengshi paper wing structure prayer 5 2 Fig. 10 main part of the spatula 1 moving mechanism # + related drawing Fig. 11 spatula (transfer mechanism Liu 4# back turn

Claims (1)

[Claims] (1) A tray that is removably attached to the printer body and on which printed paper is placed; an eject member that comes into contact with the tip of this tray and pulls out the tray from the printer body; 1. A printer comprising: a tensile elastic member that always pulls and biases in a direction in which the printer is pulled out from the printer main body.