CN1264649A

CN1264649A - Printer

Info

Publication number: CN1264649A
Application number: CN00102697A
Authority: CN
Inventors: 水野收
Original assignee: Star Micronics Co Ltd
Current assignee: Star Micronics Co Ltd
Priority date: 1999-02-26
Filing date: 2000-02-25
Publication date: 2000-08-30
Anticipated expiration: 2020-02-25
Also published as: KR20000058207A; JP3363399B2; CN1135171C; JP2000247005A

Abstract

A printer is provided with a frame with an ink ribbon cassette and a cassette lifting and lowering unit provided removaly on the side of the frame and lifting and lowering the ink ribbon cassette. The cassette lifting and lowering unit is provided with a gear mechanism transmitting the rotation of a drive shaft provided on the frame to brackets and set removably on a frame, a cam mechanism lifting and lowering the ink ribbon cassette, a clutch mechanism selectively transmitting the rotation of the gear mechanism to the cam mechanism and an actuator for connecting and cutting the clutch mechanism. Therefor, a monochrome printer can be used as a multicolor printer, and optionally set the rotating speed of a cam.

Description

Printer

The present invention relates to a kind ofly, specifically, relate to a kind of printer of applied range, can print from monochrome easily and change to double-colored printing by moving the printer that colour band changes print colors along the colour band width.

In double-colored printer, moving broad ways by broad ways has the colour band of different colours to change print colors.For example, Japanese patent application, for the first time open, No. 586081 a kind of structure is disclosed, wherein by make the ribbon cartridge supporting part inclination of supporting ribbon cartridge with cam of a motor-driven.But to be production cost high and need a motor to be used for ribbon cartridge specially in printer for the problem that exists.In addition, for the first time open at Japanese patent application, in 10-157261 number, the power shaft of an one-way clutch is installed on the driving shaft of a mobile print head, and a cam is installed on the output shaft of this one-way clutch; Then, by discharge one-way clutch by solenoid cam is rotated.Like this, the ribbon cartridge supporting part with cam-engaged can tilt along the vertical direction.

But,,, and be difficult to exchange with the part of monochrome printers so the problem that exists is that production cost is higher because above-mentioned printer is specifically designed to double-colored printing.On the other hand, Japanese patent application, for the first time open, the defective that disclosed technology exists in 10-157261 number is the rotating speed that can not change cam, does not promptly have the free degree, this is because the rotation of driving shaft is directly delivered to cam by one-way clutch.

The purpose of this invention is to provide a kind of printer, can freely set the rotating speed of cam, can reduce production cost, and can be applicable to the structure of double-colored printer.

According to an aspect of the present invention, a kind of printer is provided, comprise that one has the printer main body of ribbon cartridge and ribbon cartridge rising/reduction unit, described ribbon cartridge rising/reduction unit is installed on the lateral parts of described printer main body removably to raise and to reduce described ribbon cartridge, wherein said ribbon cartridge rising/reduction unit comprises a gear mechanism, be installed in the rotation of the driving shaft of the printhead on the described printer main body in order to transmission, one cam mechanism, with above/down mobile described ribbon cartridge, one clutch, in order to selectively the rotation of described gear mechanism is delivered to described cam mechanism, with a driving mechanism, in order to connect and to disconnect described clutch.

In this printer, when needs, can change print colors, and the rotation of driving shaft is delivered to cam mechanism by gear mechanism, and driving mechanism disconnects clutch by moving up and down ribbon cartridge.So, only need by ribbon cartridge rising/reduction unit is installed on the basic structure of monochrome printers, just can constitute a double-colored printer or a multicolor printer, this is because a kind of like this structure is equipped with ribbon cartridge rising/reduction unit, and all parts all can be combined in the basic structure.And, by selecting gear ratio can freely set the rotating speed of cam mechanism with gear mechanism.

Printer main body preferably includes the ribbon cartridge supporting arrangement of the described ribbon cartridge of a supporting, with the described colour band lateral ends that can freely tilt along the vertical direction by the part of rotatably support one base edge on described printer main body.Described carriage preferably includes first carriage that is installed in removably on the lateral parts of described printer main body, with one second carriage, one end thereof is connected in described first carriage in this second carriage, like this it can be in a preset range along upper and lower to moving, and by described cam mechanism rising and reduction, its other end is installed on the described ribbon cartridge supporting arrangement removably.And, can easily a printer be transformed into double-colored printing or multi-color printing, by with described gear mechanism, described cam mechanism, described clutch and described driving mechanism are bearing on first carriage, can obviously simplify the installation of ribbon cartridge rising/reduction unit in printer.

In addition, driving shaft preferably includes one and rotates transmitter shaft, and the latter rotates with the rotation of this driving shaft, and protrudes from the lateral parts of described printer main body.Rotate the preferably part of the bolster of driving shaft of transmitter shaft, stretch out, perhaps preferably adopt another root axle that is connected in this bolster by gear from printer main body.Can easily driving shaft be connected in this gear mechanism, this is because described gear mechanism comprises a front gear, this front gear and a gears engaged and a backgear that is installed on the rotation transmitter shaft, this backgear is connected in described front gear by described clutch.And described cam mechanism preferably includes a cam, and by linking to each other with second carriage along the vertical direction, described cam moves this second carriage along the vertical direction with described back-geared rotation.Like this, moving of second carriage suffers restraints at the cam place and finishes certain action.

This clutch system can have a kind of like this structure, wherein one imports gear, and a triggering ring and an output gear can rotate mutually and be contained on the same axle.Specifically, clutch spring is installed on the outer peripheral face of clutch pipe, and this clutch pipe is installed in the middle part of input gear, and an end hook of clutch spring triggering on the ring, and the latter is contained on the inner peripheral surface of input gear.Clutch spring penetrates trigger, and the other end of clutch spring is hooked on the output gear.And the rotation direction that it sets the input gear is the tension direction of clutch spring, and triggers the output gear that encircles and be hooked on the clutch spring and rotate with the rotation of input gear.When triggering ring when protruding the trigger stop of device etc. (being installed on the outer peripheral face that triggers ring), because triggering ring and the output gear direction lax with respect to clutch spring rotates, so the clutch pipe disconnecting clutch spring of input gear, and only import gear and rotate.

By along the trigger that clutch circumferentially is installed one group of position and by the form of design, can incrementally set the stop position of ribbon cartridge supporting arrangement by the cam of clutch control.Like this, it just can be corresponding to the colour band with multiple color.Driving shaft also rotates when the ribbon cartridge supporting arrangement tilts, and makes that printhead moves to print position after the inclination of ribbon cartridge supporting arrangement stops.Cam mechanism can mesh with the output gear of clutch.

If the driving mechanism of paper feeding motor and rotating driveshaft is arranged on the lateral parts of the opposite side of ribbon cartridge rising/reduction unit in the printer main body, it is suitable so, and this is because the space of ribbon cartridge rising/reduction unit has been determined.And, by form one with the printer main body lateral parts on the hole that matches of one of them gear shaft of gear mechanism, the location that can realize first carriage and printer main body.By providing one to hook the hook that is located at a hole on the printer main body, might with screw first carriage be tightened on the printer main body a position.

So, in the present invention, can constitute a double-colored or multicolor printer, and by ribbon cartridge rising/reduction unit is connected on the basic structure of monochrome printers, all parts might be combined in the basic structure, this is because the ribbon cartridge rising/reduction unit of rising and reduction ribbon cartridge is to be installed in removably on the lateral parts of printer main body.And, by selecting gear ratio, can freely set the rotating speed of cam mechanism with gear mechanism.

Fig. 1 is a plane, shows the printer of one embodiment of the invention.

Fig. 2 shows the being seen printer of direction along arrow II among Fig. 1.

Fig. 3 shows the being seen printer of direction along arrow III among Fig. 1.

Fig. 4 is a cutaway view, shows ribbon cartridge rising/reduction unit.

Fig. 5 shows the being seen printer of direction along arrow V among Fig. 4.

Fig. 6 is a plane, shows the printer that ribbon cartridge rising/reduction unit is installed.

Fig. 7 shows the being seen printer of direction along arrow VI among Fig. 6.

A. the structure of embodiment

A-1. the essential structure of printer

At first explain embodiments of the invention referring to figs. 1 through 7.Fig. 1 is the vertical view of printer, and Fig. 2 and 3 is side views of printer.Fig. 1 to 3 shows the state that ribbon cartridge rising/reduction unit is not installed.Expressing under the situation of direction in the explanation below, the upside among Fig. 1 is the front side, and downside is a rear side, and is identical among right and left direction and Fig. 1.In Fig. 1, reference number 1 is a frame (printer main body).Frame 1 comprises a base plate 1a and the side plate 1b that extends in the upward direction from the both sides of base plate 1a.1b roughly forms a U-shaped at the side view epipleural.One driving shaft 2 is rotatably supported on each side plate 1b and the 1b by a driving shaft (rotation transmitter shaft) 20.One direct current motor (not shown) is installed in the inboard of frame 1 right side latus inframedium, and it rotates by gear 21 etc. and is delivered to driving shaft 2.

As shown in Figure 1, one 23 is arranged on side plate 1b and the 1b, and a balladeur train 24 is bearing on this axle 23 slidably along axis.Balladeur train 24 is connected in a groove 2a on the outer peripheral face that is arranged on driving shaft 2, and moves along axis direction with the rotation of driving shaft 2.One printhead 25 is installed on the balladeur train 24, and at printhead 25 be arranged on a piece of paper between the paper pressing shaft 26 on side plate 1b and the 1b and print.

In the drawings, numeral 3 expressions one ribbon cartridge supporting arrangement.The

arm

31 and 32 of the forward and backward side of supporting ribbon cartridge 30 is arranged on the forward and backward edge of ribbon cartridge supporting arrangement 3.The projection of protruding in the left side in Fig. 1 33 is formed on the back edge of ribbon cartridge supporting arrangement 3.On the other hand, a upwardly extending arm 11 is arranged on the antemarginal both sides of side plate 1b, and the shape hole 12 that is similar to a small drum is formed on the upper rim (Fig. 2) of arm 11.Because projection 33 is inserted in this hole 12, thus the leading edge of ribbon cartridge supporting arrangement 3 just can be in a predetermined angular be to have a down dip on the center with protruding 33.In addition, shown in Fig. 2 and 3, a back edge part that is arranged on ribbon cartridge supporting arrangement 3 along the front lower place to the backstop 34 of extending.On the other hand, before edge and rear is arranged on the base plate 1a to the arm 13 with backstop 34 overlap joints, and arm 13 and backstop 34 are installed with screws 14 mutually.In this way, the fixing position of ribbon cartridge supporting arrangement 3.

One colour band 30 is bearing in aforesaid ribbon cartridge supporting arrangement 30 places.The one arm 30a that extends forward is formed on the left and right two edges part of ribbon cartridge 30.A colour band 30b who extracts out from the end of arm 30a inserts another arm 30a by the gap between printhead 25 and the paper pressing shaft 26.Colour band 30b is wound in the ribbon cartridge 30 circularly, and is supplied with continuously by the ink ribbon feeder for type 30c that rotates with the rotation of driving shaft 2.In Fig. 1, numeral 35 expressions one paper feed roller unit.Paper feed roller wherein drives rotation by a stepper motor 36 and a gear train 37, and supplies with the paper that inserts from paper feed ports 38 between printhead 25 and paper pressing shaft 26.

A-2. ribbon cartridge rising/reduction unit

It more than is the essential structure of printer when used colour band 30b is monochrome.Explain the structure of ribbon cartridge rising/reduction unit below with reference to Figure 4 and 5.In these figure, numeral 4 is one first carriages, and numeral 5 is one second carriages.Gear mechanism 6 is connected on first carriage 4 by

axle

40 and 41, and clutch 7 is connected on first carriage 4 by axle 42.Actuator (driving mechanism) 8 is connected on first carriage 4 by carriage 81.Cam mechanism 9 is installed on the gear mechanism 6.And in Fig. 5, numeral 44 is holes, is used to adopt a screw with respect to frame 1 stop first carriage 4.

1. explain the structure of gear mechanism 6 now to cam mechanism 9.

(1) gear mechanism

In the drawings, numeral 60 expressions one first gear, the latter is shaped and unification is 61 and small diameter gears 62 of a gear wheel in large diameter (front gear).First gear 60 is rotatably supported on first carriage 4 by axle 40.A gear wheel in large diameter 61 and a gears engaged that is installed on the above-mentioned driving shaft 20, such first carriage 4 is installed on the frame 1.This

small diameter gear

62 and 63 engagements of one second gear, the latter is rotatably supported on first carriage 4 by axle 41.One the 3rd gear (backgear) 64 is rotatably supported on the axle 41.

(2) clutch

As shown in Figure 4, the input gear 70 of one and second gear, 63 engagements is rotatably supported on the axle 42.The clutch pipe 71 that axis direction on one day (right side among Fig. 4) stretches out is formed on the middle part of input gear 70.One under stress state not the internal diameter clutch spring 72 bigger than the internal diameter of clutch pipe 71 be installed on the outer peripheral face of clutch pipe 71.One triggers ring 73 is connected on the inner peripheral surface of importing gear 70.One end of clutch spring 72 is connected and triggers on the ring 73.As shown in Figure 5, an integrally formed trigger 74 that is configured as protuberance is formed on the outer peripheral face that triggers ring 73.One output gear 75 is rotatably supported in the outside of triggering ring 73 by axle 42.The other end of clutch spring 72 is connected in the interior transverse plane of output gear 75.Output gear 75 meshes with the 3rd gear 64 of gear mechanism 6.In the drawings, numeral 76 is E shape rings, is used to prevent that output gear 75 from coming off.

The rotation direction of input gear 70 is set along the tension direction of clutch spring 72.So, when input gear 70 rotates, wherein make the device of clutch spring 72 tensionings make 71 tensionings of clutch pipe, and the triggering ring 73 and the output gear 75 that are connected in clutch spring 72 rotate.When trigger 74 when trigger 7 being in suspended state with contacting of following actuator 8, the clutch pipe 71 of the input gear 70 clutch spring 72 that comes off, this is to rotate relative to the lax direction of clutch spring 72 with output gear 75 because trigger ring 70.So, only import gear 70 and rotate.Like this, rotation just is not delivered on the output gear 75.

(3) actuator

In the drawings, numeral 80 is solenoids and is installed on first carriage 4 by carriage 81 and screw 82.Iron core 83 with carriage 81 shapings and unification is inserted in the upper end of solenoid 80.This iron core 83 penetrates solenoid 80 and stretches out from the lower end of solenoid 80.One hook 84 that protrudes forward is formed on the opposite side of iron core 83.And, downwards the arm 85 that extends be formed on unshakable in one's determination 83 and hook 84 between the middle part on.The middle part of trigger arm 86 is bearing in the lower end of arm 85, and can be along upper and lower to freely tilting.The front end of trigger arm 86 is upwards drawn by the tension spring 98 between trigger arm 86 and the hook 84.Like this, trigger arm 86 contact triggers the trigger 74 of ring 73 and when the connection of solenoid 80 disconnection clutch 7 during not by excitation.By making solenoid 80 excitations, the rear end of trigger arm 86 is attracted to iron core 83, so trigger 74 is released and clutch 7 is connected.

(4) cam mechanism

For a circular cam 9 has the center of departing from respect to axle 41, and on the end face of the 3rd gear 64 of gear mechanism 6, form one on the side view with the 3rd gear 64.On the other hand, second carriage 5 comprise one roughly in the face of the base 50 of horizontal direction and along direction down extend and with base 50 rectangular drive parts 51.A plate 91 of clamping cam 90 from above-below direction is formed on the drive part 51.An elongated hole 92 that is inclined to a climbing slope for rear side is formed on the mid portion between the plate 91, and axle 41 passes elongated hole 92.When the 3rd gear 64 rotated, cam 90 rotated, and plate 91 promoted by cam 90, therefore moved along elongated hole 92 according to this mechanism's second carriage 5.

A-3. the installing mechanism that is used for ribbon cartridge rising/reduction unit

Below, explain ribbon cartridge rising/reduction unit is installed in structure on the frame 1 in the said structure removably.At first, form a screw or hole (not shown), behind driving shaft 20 that a gear is packed into, a screw or pin are inserted this screw or hole then in the end of the driving shaft 20 of driving shaft 2.This gear is fixing by this screw or pin.On the base 50 of second carriage 5, form a screw 52 and a protuberance 53, and on ribbon cartridge supporting arrangement 3,

form hole

35 and 36 with screw 52 and protuberance 53 corresponding (see figure 1)s.And stretch out slightly from the back side of first carriage 4 end of the

axle

40,41 and 42 that is supported at first carriage, 4 places.Also be formed with a protuberance 45 (see figure 5)s at the back side of first carriage 4.The

hole

15,16,17 and 18 that matches with it is formed on the side plate 1b of frame 1.And hook 46 (see figure 4)s are protruded towards a side direction in the rear side of first carriage 4, and an elongated hole 19 is formed on the side plate 1b of frame 1, corresponding to hook 46.One screw 19a is formed on the side plate 1b, on the hole 44 corresponding to first carriage 4.

B. the operation of embodiment

B-1. monochromatic printing

Below, explain monochromatic operation of printing in the operation of embodiment.When a paper was inserted the paper feed ports 38 of paper feed roller unit 35, inner paper feed roller rotated and stops operating after paper being sent into printhead 25 and paper pressing shaft 26 centres.Subsequently, driving shaft 2 rotates, and prints when printhead 25 moves.At this moment, move colour band 30b by rotating ink ribbon feeder for type 30c.When first line printing was intact, paper feed roller unit 35 was paper feeding delegation, and carried out the printing of next line by printhead 25.When all provisional capital printings finish, paper feed roller unit 35 these paper of output.

B-2. the installation of ribbon cartridge rising/reduction mechanism

Below, explain the order that changes to the printer of double-colored printing in order to the printer that monochrome is printed.At first, as shown in Figure 7, gear 27 is contained on the driving shaft 20, and fixes the rotation of gear 27 with screw or pin.E shape ring 28 prevents that gear 27 from coming off.Take off the screw 14 of fixed stop 34, but ribbon cartridge supporting paper 3 just is in the state that it self tilts then.Then, the hook 46 of first carriage 4 is hooked on the elongated hole 19 of side plate 1b, such first carriage 4 just is connected in side plate 1b.At this moment, pack into the hole 15 to 18 of side plate 1b of axle 40 to 42 and protuberance 45.Like this, the gear wheel in large diameter 61 of first gear 60 just with gear 27 engagement of driving shaft 20.By hole 44 screw 47 is tightened in screw 19a and goes up (see figure 7).Then, the base 50 of second carriage 5 is overlapped on the lower plane of ribbon cartridge supporting paper 3, with its protuberance 53 load holes 36.Then, by hole 35 screw 54 is tightened on the screw 52.By said procedure, just constituted the double-colored printer shown in Fig. 6 and 7.

B-3. double-colored printing

Below, the operation of carrying out double-colored printing by a printer is described, a ribbon cartridge that can raise and reduce is installed in this printer.In this case, colour band 30b has at the primary colours of the first half of its width (as black), and has another kind of color (as redness) in Lower Half.When printing primary colours, ribbon cartridge supports 3 horizontal location, and printhead 25 is in the face of the primary colours of colour band.In state shown in Figure 5, because trigger arm 86 and trigger 74 engagements, so the connection of clutch 7 is disconnected.Like this, although the rotation of the gear 27 of driving shaft 20 is passed to the input gear 70 of gear mechanism 6 and clutch 7, this rotates no longer to front transfer.So ribbon cartridge supporting arrangement 3 keeps level, and proceed the printing of primary colours.

At this moment, when solenoid 80 during by excitation, the rear end of trigger arm 86 is attracted to solenoid 80, and its front end slave flipflop 74 discharges.Like this, clutch 7 just is connected, and triggers ring 73 and output gear 75 rotates with the input gear.The 3rd gear 64 of gear train 6 rotates with the rotation of input gear 70, and cam 90 rotations, and the plate 91 with second carriage 5 boosts then.Then, second carriage 5 just is raised along elongated hole 92, and ribbon cartridge supporting arrangement 3 is that the center is inclined upwardly with lug 33.Like this, ribbon cartridge 30 just is inclined upwardly.

Then, when solenoid 80 no longer during excitation, trigger arm 86 tilts by means of the elastic force of extension spring 87, and engages with the outer peripheral face that triggers ring 73.After this, trigger 74 pitch of the laps are walked and are meshed with trigger arm 86, and the connection of clutch 7 is disconnected then.Like this, the rotation of cam 90 stops.This moment, cam 90 was in the position of rotating 180 degree, and ribbon cartridge supporting arrangement 3 is in maximum inclining position.The bottom of colour band (redness), prints by making printhead 25 move to next print position under this state in the face of printhead 25.If require print colors to return to primary colours, make cam 90 rotate 180 degree by excitation solenoid 80, and make ribbon cartridge supporting arrangement 3 levels.

In having the printer of said structure, when needs, be delivered to cam 90 and disconnect clutch 7 through gear mechanism 6 and clutch 7 by the rotation that makes driving shaft 2, and inclination ribbon cartridge 30 can change print colors by solenoid 80.Because said structure is mounted on the ribbon cartridge rising/reduction unit, so can select monochrome cells or double-colored printing, and, can utilize all parts of basic structure only by ribbon cartridge rising/reduction unit is installed on the monochrome printers that belongs to a basic structure.And, select gear ratio by gear mechanism 6, can freely set the rotating speed of cam 90.

Especially, in the above-described embodiments, because gear mechanism 6, cam mechanism 9, clutch 7 and actuator 8 are bearing on first carriage 4, by the remarkable installation of simplification ribbon cartridge rising/reduction unit on printer main body 1, can change the Machine Type of printer easily.And, owing to only need by first carriage 4 is installed in the gear wheel in large diameter 61 and the gear 27 of driving shaft 20 to be meshed, so can connect driving shaft 2 and gear mechanism 6 easily.

And, because

plate

91 and 91 has retrained cam 90 up and down, needn't in second carriage 5, move so can finish certain action.In addition because the gear 21 of

drive motors

36 and 22 or the driving shaft 2 of paper supply be arranged on the sidepiece of the opposite side of ribbon cartridge rising/reduction unit in the printer main body 1, so define the space that is used for ribbon cartridge rising/reduction unit fully.Owing to be installed on the side plate 1b of printer main body 1 with axle 40 to 42 holes that match 15 to 18 of gear mechanism 6 or protuberance 45, so can determine the position of first carriage 4 easily.In addition, can only with screw 47 first carriage 4 be installed on the printer main body 1, this is because hook 46 is formed on first carriage 4, and hooks the elongated hole 19 of side plate 1b.

In addition, although must adjust the gap between iron core 83 and the trigger arm 86, the stroke of the trigger arm 86 when adjusting solenoid 80 excitations, but can afterwards finish the stroke adjustment in the positions of adjustment solenoids 80 by lax screw 82 when not being installed on the frame 1 yet in ribbon cartridge risings/reductions unit.

In this embodiment, ribbon cartridge supporting arrangement 3 can be constituted that it can vertically move up and down when ribbon cartridge supporting arrangement 3 tilts.

Claims

1. a printer comprises that one has the printer main body of ribbon cartridge and ribbon cartridge rising/reduction unit, and described ribbon cartridge rising/reduction unit is installed on the lateral parts of described printer main body removably and raises and reduce described ribbon cartridge;

Wherein said ribbon cartridge rising/reduction unit comprises:

One gear mechanism is installed in the rotation of the driving shaft of the printhead on the described printer main body in order to transmission,

One cam mechanism, in order to moving up and down described ribbon cartridge,

One clutch, in order to selectively the rotation of described gear mechanism is delivered to described cam mechanism and

One driving mechanism is in order to connect and to disconnect described clutch.

2. printer as claimed in claim 1, wherein said printer main body comprises the ribbon cartridge supporting arrangement of the described ribbon cartridge of a supporting, with end by the described colour band that has a down dip on can be freely in rotatably support one base edge part on the described printer main body

Described carriage comprises that one is installed in first carriage on the lateral parts of described printer main body removably, with one second carriage, the latter's a end is connected in described first carriage, so that in a preset range, move up and down, and move up and down by described cam mechanism, its the other end is installed on the described ribbon cartridge supporting arrangement removably

Described first bearing bracket described gear mechanism, described cam mechanism, described clutch and described driving mechanism.

3. printer as claimed in claim 2, wherein said driving shaft comprise that one rotates transmitter shaft, and the latter rotates with the rotation of this driving shaft, and protrude from the lateral parts of described printer main body;

Described gear mechanism comprises a front gear, this front gear and a gears engaged and a backgear that is installed on the rotation transmitter shaft, and this backgear is connected in described front gear by described clutch; With

Described cam mechanism comprises a cam, and by being installed on the described backgear and linking to each other with second carriage along the vertical direction, described cam moves this second carriage along the vertical direction with described back-geared rotation.

4. as the described printer of claim 1 to 3, wherein a paper supply is arranged on described in the described printer main body on the ribbon cartridge/lateral parts of the opposite side of lower unit with a motor and a driving mechanism that rotates described driving shaft; With

By forming the location that first carriage and printer main body are realized in a hole, described at least one gear shaft of the described gear mechanism on described hole and the described printer main body lateral parts matches.