CN106004119A - Printer - Google Patents

Abstract

According to the invention, a recording medium is prevented from being polluted by recording action. A guiding roller (305) is arranged in a printer with a printing head (103) and a platen. The outer diameter of the guiding roller changes in the following manner according to different positions in an axis center direction: a first peripheral surface, which is in the outer peripheral surfaces and is not adjacent to a position of a printing needle protruding from the printing head (103) in the main scanning direction, is protruded from the end surface to the platen side, and a second peripheral surface, which is adjacent to the protruding position in the main scanning direction, is closer to the aixs center than the first peripheral surface.

Description

Printer

Technical field

The present invention relates to the printer possessing the printhead that can move back and forth along main scanning direction.

Background technology

In the past, have when the thickness of record medium also is able to when the midway of operation of recording changes prevent shower nozzle and note The various technology of recording medium contact.Specifically, the most such as have relate to print head assembly as described below position adjust The technology of joint mechanism: the both sides of the print head on main scanning direction arrange parallel with platen and can with print line The roller rotated in identical plane, and utilize spring this roller to press on record medium (for example, referring to following patent documentation 1.).

It addition, specifically, the most such as there is the technology relating to printing equipment as described below: to by force application component Shower nozzle (print-member) to the direction force of record medium carries out arranging on the sliding panel that supports guide reel, utilizes to enter shower nozzle This guide reel is pressed on record medium and platen by the active force of the force application component of row force, thus makes shower nozzle and record The distance of medium remains constant (for example, referring to following patent documentation 2.).

It addition, specifically, the most such as there is the technology relating to printing equipment as described below: will be from print head to pressure The buoy member that paper bobbin side highlights is fixed on print head, the situation that the thickness at record medium increases and abuts with buoy member Under, make print head move to the direction away from platen (for example, referring to following patent documentation 3 by this buoy member.).

Citation

Patent documentation 1: Japanese Laid-Open Patent Publication 50-053124 publication

Patent documentation 2: Japanese Laid-Open Patent Publication 60-101058 publication

Patent documentation 3: Japanese Unexamined Patent Publication 04-276478 publication

But, all there is problem as described below in above-mentioned prior art: make when carrying out operation of recording shower nozzle along When main scanning direction moves, in order to the component preventing shower nozzle from arranging with recording contacting of medium is passing through the record after just recording Contact with record position during position, cause recording medium and rubbed, thus make record medium be contaminated.

Summary of the invention

The present invention for eliminating above-mentioned problem of the prior art point, its object is to provide one be prevented from along with The printer that the record medium of operation of recording is contaminated.

Solution

In order to solve above-mentioned problem and realize purpose, printer involved in the present invention is characterised by possessing: shower nozzle, It is can arrange in the way of moving back and forth along main scanning direction, and possesses when operation of recording optionally prominent multiple Print needle；Platen, it is opposed with described shower nozzle in the whole region of the scope that moves back and forth of described shower nozzle；And guide Roller, the end face of its described platen side in described shower nozzle and the position opposed with described platen, make periphery Under the state that the part in face is more prominent to described platen side than described end face, it is possible to around be orthogonal to described main scanning direction The parallel axis rotation of sub scanning direction, described guide reel according to the difference of the position on described axis direction, make external diameter by Different according to such a way: make in described outer peripheral face, on described main scanning direction not with described print needle from described spray First outer peripheral face of the position that extrusion position that head process goes out is adjacent is more prominent to described platen side than described end face, and, The second outer peripheral face making position adjacent with described extrusion position on described main scanning direction is positioned at than described first periphery Face is by the position of described center axis.

It addition, printer involved in the present invention is on the basis of foregoing invention, it is characterised in that possess being positioned in The colour band that ink ribbon between described shower nozzle and described platen carries out keeping keeps component, and described guide reel is with following state Arrange: make described first outer peripheral face keep component than by described colour band on the described shower nozzle direction opposed with described platen The described ink ribbon kept is prominent to described platen side.

It addition, printer involved in the present invention is on the basis of foregoing invention, it is characterised in that possess force application mechanism, This force application mechanism on the direction that described shower nozzle is close with described platen in this shower nozzle and this platen at least One side exerts a force, and described guide reel possesses tapering, this tapering be arranged on described first outer peripheral face and described second outer peripheral face it Between, and tilt relative to described sub scanning direction in the way of external diameter is the most different.

It addition, printer involved in the present invention is on the basis of foregoing invention, it is characterised in that described guide reel possesses Rake, this rake is arranged on the two ends on described axis direction, and phase in the way of external diameter is the least the closer to end side Described sub scanning direction is tilted.

It addition, printer involved in the present invention is on the basis of foregoing invention, it is characterised in that outside described guide reel Size on the described axis direction of side face is longer than the size on the described axis direction of described extrusion position.

It addition, printer involved in the present invention is on the basis of foregoing invention, it is characterised in that the half of described guide reel Size on direction, footpath is used for recording the maximum thickness gauge modest ability of the record medium of object.

It addition, printer involved in the present invention is on the basis of foregoing invention, it is characterised in that described shower nozzle possesses and inclines Inclined-plane, this inclined plane is arranged on the two ends on the end face of described platen side and described main scanning direction, and with described The mode that platen separates tilts.

Invention effect

According to printer involved in the present invention, play and be prevented from being contaminated along with the record medium of operation of recording Such effect.

Accompanying drawing explanation

Fig. 1 is the explanatory diagram (one) of the structure of the printer illustrating embodiment involved in the present invention.

Fig. 2 is the explanatory diagram (its two) of the structure of the printer illustrating embodiment involved in the present invention.

Fig. 3 is the explanatory diagram (one) of the structure illustrating record portion.

Fig. 4 is the explanatory diagram (its two) of the structure illustrating record portion.

Fig. 5 is the explanatory diagram (its three) of the structure illustrating record portion.

Fig. 6 is the explanatory diagram (its four) of the structure illustrating record portion.

Fig. 7 is the explanatory diagram of the shape illustrating guide reel.

Fig. 8 is to illustrate the position between the print needle the second outer peripheral face from the prominent extrusion position of printhead and guide reel The explanatory diagram of relation.

Fig. 9 is the explanatory diagram schematically showing the relation between guide reel and inclined plane.

Figure 10 is the explanatory diagram of the maintenance mechanism illustrating guide reel.

Figure 11 is by the explanatory diagram shown in the part amplification in Figure 10.

Description of reference numerals:

100 printers

103 printheads

203 platens

304 balladeur train paper guides

304a inclined plane

305 guide reels

502 ink ribbons

601 openings

701 first outer peripheral faces

702 second outer peripheral faces

706 rakes

Detailed description of the invention

Hereinafter, referring to the drawings the preferred implementation of printer involved in the present invention is described in detail.

(structure of printer)

First, the structure of the printer of embodiment involved in the present invention is illustrated.Fig. 1 and Fig. 2 is to illustrate The explanatory diagram of the structure of the printer of embodiment involved in the present invention.Fig. 1 illustrates from oblique upper observation involved in the present invention The state of printer of embodiment.Fig. 2 illustrate the printer of embodiment involved in the present invention, A-A in Fig. 1 cuts open Face.

In Fig. 1 and Fig. 2, the printer 100 of embodiment involved in the present invention possesses: before printer 100 The first paper supply ejection port 101 that side, face (on the left of the paper in Fig. 2) is arranged and at the rear side (paper in Fig. 2 of printer 100 Right side of face) the second paper supply ejection port 201 of arranging.First paper supply ejection port 101 and the second paper supply ejection port 201 are by transport path 202 connections.The record medium becoming record object is carried by transport path 202.

Printer 100 from the first paper supply ejection port 101 to the second paper supply ejection port 201 or from the second paper supply ejection port 201 to the first paper supply ejection port 101 conveying recording medium.In the present embodiment, below the record in transport path 202 is situated between Paper left and right directions in the conveying direction of matter, i.e. Fig. 2 illustrates as sub scanning direction.It addition, by the paper table in Fig. 2 Back of the body direction illustrates as main scanning direction.In the present embodiment, main scanning direction is orthogonal with sub scanning direction.

In printer 100, overlap with as record medium and using the record medium of multiple pressure-sensitive colour developing types carbon paper, The paper (common paper) overlapping with multiple is ordered into the booklet of book shape.The record medium of pressure-sensitive colour developing type by being pressurized and Make the developing portions that this is pressurized.

Or, printer 100 can be using sheet-fed, continuous paper as record medium.Sheet-fed is to be cut to regulation in advance The record medium of size, specifically, it is possible to realized by the paper etc. of the paper of A4 size, B5 size.Continuous paper is strip Record medium, such as have alongst and be wound as drum form or according to regulation length mutually the most not The form etc. folded together.Sheet-fed, continuous paper are known technology, and description will be omitted.

The record portion 102 that record medium is carried out operation of recording it is provided with in the midway of transport path 202.Record portion 102 has Standby printhead 103 and platen 203.

Record portion 102 makes the state that printhead 103 is opposed with platen 203 to be clipped in the middle by transport path 202 Arrange.In the present embodiment, it is possible to utilize printhead 103 to realize shower nozzle involved in the present invention.

Printhead 103 is mounted on balladeur train 204.Balladeur train 204 is configured to along with main scanning direction as axis direction Balladeur train axle 205 slide.Balladeur train 204 is such as connected with timing belt, by the driving force by motor, the rotary motion quilt of motor Be converted to the translatory movement of band, make balladeur train 204 along balladeur train axle 205 in the direction enterprising line slip corresponding with this rotation.By This, it is possible to make printhead 103 move back and forth along main scanning direction.

Record portion 102 possesses the ribbon cartridge 104 of holding ink ribbon (reference 502 with reference in Fig. 5).In present embodiment In, it is possible to utilize ribbon cartridge 104 to keep component to realize colour band involved in the present invention.Ribbon cartridge 104 is to stride across balladeur train 204 The state of moving range is removably installed in main body 100.Ink ribbon is when ribbon cartridge 104 is installed in printer 100 It is positioned between printhead 103 and platen 203.

Ribbon cartridge 104 such as can be referred to as " fixed form by be installed on the main body of printer 100 " etc. (Stationery) mode is installed, it is also possible to by being installed on being referred to as of balladeur train 204 " balladeur train assembling mode " etc. Mode is installed.

Ink ribbon 502 moves to main scanning direction direction along with moving back and forth of balladeur train 204.Thus, Printhead 103 is when ribbon cartridge 104 is installed in printer 100 main body, regardless of the position on main scanning direction The most all the time opposed with platen 203 across ink ribbon.When carry out use ink ribbon operation of recording time, record medium ink ribbon with Carried between platen 203.

Ink ribbon is by the power drive of the motor of drive carriage 204.Copying ribbon driving mechanism is by the gear of the driving providing ink ribbon Trains etc. are constituted, and possess the switching mechanism being configured to be wound to a direction by colour band all the time.Switching mechanism is configured to no matter It is above-mentioned " fixed form " or " balladeur train assembling mode ", both relative to moving back and forth of balladeur train based on copying ribbon driving mechanism And all the time colour band is wound to a direction.

In transport path 202, it is being provided with the first roller to 206 than the position of side on the front, record portion 102.First roller pair 206 by can constituting around two rollers 206a, 206b that the axle center parallel with main scanning direction rotates, and sets along main scanning direction Have multipair.Constitute the first roller to 206 two rollers 206a, 206b make outer peripheral face mutual to be clipped in the middle by transport path 202 The state abutted is arranged opposite.

Constitute the first roller in two rollers 206a, 206b of 206, in fig. 2 side more top than transport path 202 arrange The roller 206b of one side and the roller 206a of the opposing party arranged on the lower than transport path 202 is carried out rotating around identical axle center Rotate.The end side in the axle center of the roller 206a of the opposing party in the first roller is to 206 is provided with gear 207.

This gear 207 and the motor etc. omitting diagram drive source to link, by motor driving force and to forward direction with And reverse directions rotates.The axle center of the roller 206a of the opposing party rotates along with the rotation of gear, thus enables that the first roller pair The roller 206a of the opposing party in 206 rotates.Owing to the roller 206b of a side abuts, therefore when the opposing party's with the roller 206a of the opposing party When roller 206a rotates, by the friction between the roller 206a of the opposing party, the roller 206b of a side is along with the roller of this opposing party The rotation of 206a and rotate.

First roller sandwiches this record in the nip portion that the roller 206b of a side and the roller 206a of the opposing party abuts and is situated between 206 Matter.When at the first roller to 206 in nip portion be folded with record medium make the opposing party roller 206a rotate time, a side Roller 206b by carried in transport path 202 record medium between friction and rotate.

First roller will import to the record medium of transport path 202 towards note via the first paper supply ejection port 101 to 206 Record portion 102 carries.It addition, the rear side from record portion 102 has been passed through the record medium court in record portion 102 by the first roller to 206 Carry to the first paper supply ejection port 101.

In transport path 202, it is being provided with the second roller to 212 than the position of backrest surface side, record portion 102.Second roller pair 212 use with the first roller 206 identical structures, by two rollers that can rotate around the axle center parallel with main scanning direction 212a, 212b are constituted, and are provided with multiple along main scanning direction.Constitute the second roller to 212 two rollers 212a, 212b with by defeated The state sending path 202 to be clipped in the middle and to make outer peripheral face mutually abut is arranged opposite.

Constitute the second roller in two rollers 212a, 212b of 212, in fig. 2 side more top than transport path 202 arrange The roller 212b of one side and the roller 212a of the opposing party that arranges on the lower than transport path 202 is rotating around identical axis rotation. The end side in the axle center of the roller 212a of the opposing party in the second roller is to 212 is provided with gear 213.

Train that this gear 213 is illustrated by omission and link with gear 207, identically with this gear 207, by motor Driving force and rotate to forward direction and reverse directions.Second roller axle center to the roller 212a of the opposing party in 212 Rotate along with the rotation of gear 213, thus enable that the roller 212a of the opposing party rotates.Due to the roller 212b of a side and another The roller 212a of side abuts, therefore when the roller 212a of the opposing party rotates, by the friction between the roller 212a of the opposing party, a side Roller 212b rotate along with the rotation of the roller 212a of this opposing party.

Second roller sandwiches this record medium to 212 in the position that the roller 212b of a side and the roller 212a of the opposing party abuts. When at the second roller to 212 in nip portion be folded with record medium make the opposing party roller 212a rotate time, a side's Roller 212b by carried in transport path 202 record medium between friction and rotate.

Second roller will import to record Jie of transport path 202 to 212 via the second paper supply ejection port 201 from rear side Matter carries towards record portion 102.It addition, the front face side from record portion 102 has been passed through the note in record portion 102 by the second roller to 212 Recording medium carries towards the second paper supply ejection port 201.

(structure in record portion 102)

Then, the structure in record portion 102 is illustrated.Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are the knots illustrating record portion 102 The explanatory diagram of structure.In figure 3, record portion 102 amplification in Fig. 2 is illustrated.In the diagram, the part amplification in Fig. 3 is shown Go out.In fig. 5, it is shown that observe the state of printhead 103 from front face side.In fig. 6, it is illustrated that observe printhead 103 from obliquely downward State.

In Fig. 3, Fig. 4, Fig. 5 and Fig. 6, printhead 103 is configured to contact relative to platen 203 The direction top offset separated.Specifically, by be fixed on balladeur train axle 205 the first component 301 and can be relative to the first component 301 move up and down and the second component 302 that arranges is to constitute balladeur train 204, utilize second component 302 to carry out bearing print head 103.By This, printhead 103 is configured at the direction top offset can separateing relative to platen 203.

It addition, the force application component 303 that printhead 103 is located at balladeur train 204 is executed to the direction abutted with platen 203 Power.Thus, printhead 103 is according to the thickness of the record medium carried between printhead 103 and platen 203, it is possible to At the direction top offset can separateing relative to platen 203, i.e. can move up and down.In the present embodiment, it is possible to Utilize the first component 301, second component 302 and force application component 303 to realize force application mechanism involved in the present invention.

Printhead 103 carries out operation of recording based on the mode of shock.Printhead 103 possesses multiple striker (wire pin), And have the front end of multiple strikers is arranged as rectangular structure in opening 601.Multiple strikers can separately to Platen 203 side highlights.

The end face of platen 203 side that opening 601 is arranged in printhead 103.Utilize opening 601, non-recorded action Time the front position of print needle be positioned in the position slightly highlighted than the end face of printhead 103.According to during non-recorded, many The position of the front end of individual striker, it is possible to realize embodiments of the present invention, print needle from the prominent prominent position of printhead 103 Put.Record time carry out operation of recording time, make multiple striker respectively via opening 601 to than this pressured paper roll of opening 601 The side of cylinder 203 highlights.

Record portion 102 makes multiple striker optionally highlight via opening 601 when carrying out operation of recording, is situated between record Matter gets point (dot) continuously, thus shows word etc..The point (dot) got when carrying out operation of recording It is not limited to manifest word, it is also possible to manifest the pattern beyond the words such as figure.

Paper led by the balladeur train of the guiding being provided with the end face of platen 203 side covered in printhead 103 on balladeur train 204 Mechanism 304.Balladeur train paper guide 304 moves back and forth along with the printhead 103 brought by moving back and forth of balladeur train 204, Move back and forth integratedly with printhead 103.Balladeur train paper guide 304 possesses so that opening 601 faces platen 203 side The peristome 602 of mode opening.Formed the colour band mask 604 of opening 601 in thickness of slab plate-shaped about the most tens of μm Shape, is positioned relative to balladeur train paper guide 304 in the way of opening 601 is positioned at the peristome 602 of balladeur train paper guide 304 Fixing.

The second component 302 of balladeur train 204 is provided with printhead 103 and balladeur train paper guide 304.Paper machine is led at balladeur train Guide reel 305 is installed on structure 304.Guide reel 305 is arranged on than peristome 602 position in the outer part on main scanning direction.

Printhead 103 when being provided with ribbon cartridge 104, with this ribbon cartridge 104 supporting ink ribbon 502 via opening Portion 602 and face the mode of platen 203 side and be supported on balladeur train 204.Ink ribbon 502 when being provided with ribbon cartridge 104, With along the platen side in printhead 103 end face and formed opening 601 colour band mask printing rostral between The mode of gap led around.

Multiple strikers optionally highlight via opening 601.When carrying out operation of recording, multiple strikers pass through each striker The ink ribbon 502 that abuts with this front end of front end and pressing partly, thus via opening 601 selectivity together with this ink ribbon 502 Highlight.

Guide reel 305 is arranged on than peristome 602 position in the outer part on main scanning direction, is therefore being provided with colour band Under the state of box 104, main scanning direction is positioned at than ink ribbon 502 position in the outer part.Owing to guide reel 305 is in main scanning side Upwards it is positioned at ratio ink ribbon 502 position in the outer part, therefore when carrying out ribbon cartridge 104 relative to the handling of printer 100, guides Roller 305 will not become obstacle.Thereby, it is possible to easily carry out the handling of ribbon cartridge 104.

On main scanning direction, the both end sides at balladeur train paper guide 304 is provided with the closer to end side more to away from pressure Inclined plane 304a that the direction of paper bobbin 203 tilts.Owing to inclined plane 304a is got over the closer to the end side on main scanning direction Tilt to the direction away from platen 203, be therefore formed between platen 203 and balladeur train paper guide 304 and more connect Nearly opening 601 and be spaced the gap that becomes the narrowest.

Platen 203 side in balladeur train paper guide 304 is provided with guide reel 305.Guide reel 305 is along main scanning side To and be arranged on the opening 601 i.e. print needle both sides from the prominent extrusion position of printhead 103.

Guide reel 305 is in the substantially cylindrical shape with sub scanning direction as axis direction.In guide reel 305, outer peripheral face Axis direction on size than the chi the axis direction of opening 601 (print needle is from the prominent extrusion position of printhead 103) Modest ability.It addition, in guide reel 305, the size on radial direction is used for recording the maximum thickness of the record medium of object Size is long.

Guide reel 305 is located at the support 501 of balladeur train paper guide 304 and is supported as to extend around along sub scanning direction Axis rotation.A part for the outer peripheral face of the support 501 platen 203 side in making guide reel 305 is via opening 603 And the state lower support guide reel highlighted towards platen 203 side of platen 203 side than balladeur train paper guide 304 305。

(shape of guide reel 305)

Then, the shape of guide reel 305 is illustrated.Fig. 7 is the explanatory diagram of the shape illustrating guide reel 305.At Fig. 7 In, the external diameter of guide reel 305 is different according to the position on axis direction.Guide reel 305 possesses: ratio balladeur train paper guide First outer peripheral face 701 prominent towards platen 203 side of platen 203 side of 304；And be positioned at than this first periphery Face 701 is by the second outer peripheral face 702 of the position of center axis.In this embodiment, the second outer peripheral face 702 is arranged on axle 703 Substantial middle part on length direction (axis direction).

Position on the axis direction of the second outer peripheral face 702 is not limited to middle body.The axle center of the second outer peripheral face 702 Position on direction can also be according to the position of above-mentioned extrusion position in printhead 103, balladeur train 204, balladeur train paper guide Length etc. on the sub scanning direction of 304, is arranged on the position beyond the middle body of guide reel 305.

In guide reel 305, than opening 601, (print needle highlights the length of the outer peripheral face on axis direction from printhead 103 Extrusion position) sub scanning direction on size long.That is, by the first outer peripheral face 701 on the axis direction of guide reel 305 (print needle is from printhead than opening 601 for length after the size addition of the second outer peripheral face 702 in size and this axis direction 103 prominent extrusion positions) sub scanning direction on size long.

The external diameter of the guide reel 305 in the second outer peripheral face 702 part is than the guide reel 305 in the first outer peripheral face 701 part External diameter little.The second outer peripheral face 702 in guide reel 305 forms the recess 704 than the first outer peripheral face 701 depression.Second periphery Size on the axis direction (sub scanning direction) in face 702 is bigger than the size on the sub scanning direction of opening 601.

Guide reel 305 in the external diameter of the guide reel 305 in the first outer peripheral face 701 part and the second outer peripheral face 702 part External diameter be adjusted to, when being folded with record medium between printhead 103 and platen 203, with by outside first The degree that the record medium of side face 701 pressing does not contacts with the second outer peripheral face 702 makes the second outer peripheral face 702 become than the first periphery The state of face 701 depression.

Guide reel 305 is arranged with following state: make the part of platen 203 side in the first outer peripheral face 701 beat The ink ribbon 502 kept than ribbon cartridge 104 on print 103 direction opposed with platen 203 is to platen 203 pleurapophysis Go out.Specifically, guide reel 305 is arranged with following state: make in outer peripheral face, on main scanning direction not with opening 601 First outer peripheral face 701 of adjacent position is more prominent to platen 203 side than the end face in printhead 103.It addition, guide reel 305 are set to, and make the second outer peripheral face 702 be located on main scanning direction the position adjacent with opening 601.

Guide reel 305 possesses tapering 705.Tapering 705 is arranged on the first outer peripheral face on the axis direction of guide reel 305 701 and second between outer peripheral face 702.Tapering 705 along the axis direction of guide reel 305 in the way of external diameter is the most different relative Tilt in sub scanning direction.Specifically, tapering 705 is located outer circumferential side the closer to the border with the first outer peripheral face 701 Position, and, more tilt to inner circumferential side (center axis) the closer to the border with the second outer peripheral face 702.

Guide reel 305 possesses the rake 706 that the two ends on axis direction are arranged.Rake 706 is with at axis direction On external diameter is the least the closer to the end side of guide reel 305 mode tilt relative to sub scanning direction.In guide reel 305, Ridge line section rounding is preferably made it steady as Fig. 7 by the boundary portion with the first outer peripheral face 701 in rake 706.

At least surface of guide reel 305 uses that ink separation property is good, forms the low material of the wellability of ink.Specifically Saying, guide reel 305 such as can use polyformaldehyde (polyoxymethylene) to be formed.

Or, guide reel 305 such as can also pass through politef (polytetrafluoroethylene, PTFE) Realize Deng the formed body of fluororesin (perfluorocarbon resin).It addition, or, guide reel 305 such as can also be carried out fluororesin Coating.Or, guide reel 305 such as can also be realized by the metal component that outer peripheral face implements mirror finish.

Guide reel 305 can use by the part becoming the first outer peripheral face 701, become the second outer peripheral face 702 part, with And the structure that axle 703 forms as one.Or, guide reel 305 can also become the part of the first outer peripheral face 701, become Part and the axle 703 of two outer peripheral faces 702 are made up of different components respectively.Supported portion 501 support and by rotate and with Support 501 produces the axle 703 of friction and is preferably used and becomes the part of the first outer peripheral face 701, become the second outer peripheral face 702 The material that part is different is formed.

Fig. 9 is the explanatory diagram schematically showing the relation between guide reel 305 and inclined plane 304a.In fig .9, guide Relation between roller 305 and inclined plane 304a is preferably, the imaginary line extended to guide reel 305 side along inclined plane 304a 901 is consistent with the tangent line of guide reel 305 (the first outer peripheral face 701).For adjusting, it is also possible to in balladeur train paper guide 304 The angle of inclined plane 304a be adjusted, so that imaginary line 901 is consistent with the tangent line of guide reel 305.

By adjusting the position of guide reel 305 so that imaginary line 901 is consistent with the tangent line of guide reel 305, it is possible to smooth and easy Ground carries out moving back and forth of the printhead 103 (balladeur train 204) on main scanning direction.Thereby, it is possible to prevent from recording the end of medium It is hooked in printhead 103, balladeur train paper guide 304 etc. and causes recording medium and be contaminated or occur damaged etc. and damage.

(operation of recording of printer 100)

Record medium, when carrying out operation of recording, is carried along sub scanning direction, and makes record medium fixed by printer 100 Between printhead 103 and platen 203.And, make printhead 103 move back and forth along main scanning direction, one While the multiple strikers possessed by printhead 103 optionally strike platen 203.Thus, record medium develops the color and in note Point (dot) is got such that it is able to show word etc. on the recording medium on recording medium.

When carrying out the operation of recording using ink ribbon 502, record medium is made to be folded in printhead 103 and platen 203 Between, additionally, when making ink ribbon 502 be positioned between platen 203 and record medium, printhead 103 is possessed Multiple strikers optionally strike platen 203.Thereby, it is possible to get, at record medium, the dot formed by ink, Thus manifest word etc. on the recording medium.

When carrying out the operation of recording using ink ribbon 502, as record medium in the case of using carbon paper, By first record medium of printhead 103 side gets the dot formed by ink, in the record medium after second Get the dot formed by pressure-sensitive colour developing.Thereby, it is possible to record the information that (manifolding) is identical on multiple record media.

As described above, printhead 103 is exerted a force to the direction abutted with platen 203 by force application component 303.It addition, As described above, the first outer peripheral face 701 in guide reel 305 than balladeur train paper guide 304 platen 203 side towards pressure Paper bobbin 203 side highlights.To this end, when carrying out operation of recording, the first outer peripheral face 701 in guide reel 305 is pressed against record On medium, balladeur train paper guide 304 becomes, with record medium, the state separated.

By the first outer peripheral face 701 in guide reel 305 is pressed on the recording medium, thus in operation of recording On the way, the more specifically midway of operation of recording when recording a line, even if situation about changing at the thickness of record medium Under, it is also possible to reliably make balladeur train paper guide 304 separate with record medium.Thus, book is being used as record medium In the case of the booklet of shape, the hinge also will not being opened is driven, it is possible to make print needle from the prominent prominent position of printhead 103 Put and record medium and separate.

And, after getting dot on the recording medium, make printhead 103 to get ensuing dot Along main scanning direction move time, guide reel 305 rotates along with moving of printhead 103.Thus, guide reel is utilized 305 make balladeur train paper guide 304 separate with record medium, are rotated by this guide reel 305, it is possible to eliminate record medium and printed The situation that 103 (balladeur train paper guides 304) rub.

Thus, how the thickness no matter recording medium can prevent from causing because record medium is rubbed by printhead 103 Undesirable developing portions in record medium or damage record medium.

In the case of the operation of recording carrying out use ink ribbon 502, ink ribbon 502 is positioned in than balladeur train paper guide 304 The position of pressured paper bobbin 203 side.Thus, ink ribbon 502 is positioned in and leans on from the prominent extrusion position of printhead 103 than print needle The position of platen 203 side.Guide reel 305 is utilized to be separated with record medium by the extrusion position in opening 601, and, ink With 502 by along formed opening 601 component (colour band mask) printhead 103 side end face in the way of led around, therefore ink Band 502 separates with record medium.

Thus, at a certain record position by the dot formed by ink after record medium is got, even if in order to beat Go out ensuing dot and make printhead 103 move along main scanning direction, ink ribbon 502 the most not with record dielectric friction.Thus, It is prevented from ink ribbon 502 to contact with record medium and cause recording medium and be contaminated.

Fig. 8 is to illustrate that print needle is from the prominent extrusion position of printhead 103 and the second outer peripheral face 702 guide reel 305 Between the explanatory diagram of position relationship.In fig. 8 it is shown that under the state observing printhead 103 from below, print needle is from printing The position relationship between the second outer peripheral face 702 in 103 prominent extrusion positions and guide reel 305.

In fig. 8, the second outer peripheral face 702 is arranged on the position caved in than the first outer peripheral face 701 to inner circumferential side.Second periphery Face 702 on main scanning direction with print needle from the adjacent position of the extrusion position that printhead 103 is prominent, to be positioned at ratio the One outer peripheral face 701 caves in inner circumferential side by the mode of the position of center axis.

To this end, after getting, to record medium, the dot formed by ink, even if in order to get ensuing dot And make printhead 103 move along main scanning direction, the motion track of the second outer peripheral face 702 the most not with print needle from printhead 103 The motion track 801 of prominent extrusion position overlaps, and will not rub record position.Thus, when carrying out using the record of ink ribbon 502 During action, it is possible to prevent the ink becoming dot got to record medium from contacting with guide reel 305 before the drying.

Such as, in the case of the external diameter of guide reel 305 is constant in the range of the whole region of axis direction, guide reel is worked as 305 when rotating along with the movement of printhead 103, and the ink before being dried is attached to guide reel 305 sometimes.Dry when being attached with When the guide reel 305 of front ink rotates, this ink is needed on the position beyond record position, makes record medium be contaminated.

The printer 100 of this embodiment does not contacts with guide reel 305 due to ink, therefore, it is possible to prevent ink attached Ink transfer (transferring again) causing attachment in guide reel 305 in record medium.Thereby, it is possible to prevent because arranging guide reel 305 and cause ink to be transferred to undesirable position so that record medium situation about being contaminated.

It addition, in printer 100, utilize rake 706 also to be able to the damage preventing recording medium.Specifically, when The end (leading section) of the record medium side, record portion 102 from this record medium is transported to printhead along sub scanning direction Time between 103 and platen 203, it is possible to utilize rake 706 to be guided the position of leading section to printhead 103 and platen volume Between cylinder 203.Thus, in the case of being provided with the guide reel 305 that direction of rotation and sub scanning direction intersect, it is also possible to by record Medium is transported between printhead 103 and platen 203 swimmingly.

Additionally, in printer 100, utilize balladeur train paper guide 304 also to be able to the damage preventing recording medium.Specifically Say, carry out record than the state of the position in the outer part, end the main scanning direction of record medium at printhead 103 from being positioned at In the case of action, if the thickness as the record medium of record object is big, then sweep when printhead 103 is positioned at the master of record medium When retouching the end on direction, inclined plane 304a of balladeur train paper guide 304 and the end abutment recording medium.

Balladeur train paper guide 304 is formed closer to opening 601 between platen 203 by inclined plane 304a It is spaced the narrowest gap, therefore makes printhead 103 move when inclined plane 304a further after the end abutment of record medium Time, it is possible to record medium is gradually guided to this gap from this end.As described above, printhead 103 by force application component 303 to The direction force abutted with platen 203.

To this end, when carrying out operation of recording, the balladeur train paper guide 304 end on the main scanning direction by record medium Portion and mobile to the position the most opposed with platen 203, inclined plane 304a is pressed on the master recording medium End on scanning direction is while moving.Balladeur train paper guide 304 while pressing on record medium by inclined plane 304a End, while by the end on main scanning direction take record be situated between be able in the way of displacement upward.Printhead 103 and this phase Companion's ground displacement the most upward.

Thus, printhead 103 is along the end displacement the most upward on the main scanning direction of record medium.Printhead 103 in the case of the end on the main scanning direction than record medium is moved in the outer part, in contrast with the above description, along Orientation gradually downward, end on the main scanning direction of record medium is moved.So, by arranging inclined plane 304a, it is possible at record Moving up and down of printhead 103 is carried out swimmingly during action.

So, the printer 100 of embodiment involved in the present invention is prevented from being situated between along with the record of operation of recording Matter is contaminated, it addition, be prevented from recording the undesirable developing portions in medium, furthermore it is possible to prevent from recording medium Damage.

(maintenance mechanism of guide reel 305)

Then, the maintenance mechanism of guide reel 305 is illustrated.As described above, due to guide reel 305 all the time with record Medium contacts, and therefore worries the burr etc. of record medium, operation of recording institute unwanted foreign body volume when carrying out operation of recording Enter.Foreign body as described above needs to guide the cleaning of roller 305 etc. to be safeguarded and removes, but in order to clean and by guide reel 305 It is troublesome for taking off, and operability is poor.

The printer 100 of embodiment involved in the present invention possesses and does not takes off guide reel 305 and just can carry out this guiding The cleaning of roller 305, the maintenance mechanism of guide reel 305.

Figure 10 is the explanatory diagram of the maintenance mechanism illustrating guide reel 305.Figure 11 is to amplify the part in Figure 10 to illustrate Explanatory diagram.In fig. 10, it is illustrated that take off the composition of ribbon cartridge 104 printer such as grade 100 from printer 100 local shown in Fig. 1 The state of parts.

In Figure 10 and Figure 11, on balladeur train paper guide 304 arrange support 501 in from opening 603 to pressure The concave shape of the side depression that paper bobbin 203 is contrary.The wall body 1001 forming this concave shape integrally sets with balladeur train paper guide 304 Put.Wall body 1001 is provided with opening 1002.

Opening 1002 extends upward through wall body 1001 in thickness of slab side.Thus, when ribbon cartridge 104 is taken off, it is possible to Guide reel 305 is cleaned via opening 1002.The cleaning of guide reel 305 can be carried out when not taking off guide reel 305. In printer 100 preferably, it is possible to utilize opening 1002 to realize the maintenance mechanism of guide reel 305.

(other shapes 1 of guide reel 305)

In the above-described embodiment, as it is shown in fig. 7, to the outer peripheral face in tapering 705 and the first outer peripheral face 701 on border The guide reel 305 of place's angulation is illustrated, but guide reel 305 is not limited to the outer peripheral face in tapering 705 and first Outer peripheral face 701 is in the shape of boundary angulation.For example, it is also possible to by the outer peripheral face in tapering 705 and the first outer peripheral face 701 Border near the curve form of curved bending that is set to heave to outer peripheral side.

In guide reel 305, at the outer peripheral face used in tapering 705 and the first outer peripheral face 701 at boundary angulation Shape in the case of, printhead 103 is exerted a force to platen 203 side by force application component 303, thus according to platen 203 Put on the outer peripheral face in the size by pressure (repulsion) of guide reel 305, tapering 705 and the first outer peripheral face 701 at boundary Angulation (sharp-pointed situation), it is possible to make in this boundary portion office to concentrate by pressure.And, in these cases, have Undesirable developing portions may be made or make record dielectric damages.

On the other hand, by being set to curved near the border of the outer peripheral face in tapering 705 and the first outer peripheral face 701 Shape, compared with the situation of this boundary member angulation, it is possible to avoid platen 203 put on guide reel 305 by pressure (repulsion) concentrates on the outer peripheral face in tapering 705 and the border of the first outer peripheral face 701.

So, by make platen 203 put on guide reel 305 by pressure (repulsion) be not centered on tapering 705 with The border of the first outer peripheral face 701 and scatter, it is possible to prevent because causing undesirable part to show in record medium concentrated stress Color or record dielectric damages.

(other shapes 2 of guide reel 305)

In order to prevent recording the damage of medium, the colour developing of undesirable part, preferably tapering 705 is relative to sub scanning direction Angle of inclination mild.On the other hand, when first outer peripheral face 701 pressing record medium position on sub scanning direction with printing Pin is when the extrusion position that printhead 103 is prominent excessively separates, it is impossible to floating of suppression record medium, cause this record medium with This extrusion position, balladeur train paper guide 304 contact.

When recording medium and contact with extrusion position, balladeur train paper guide 304, record medium and extrusion position, Balladeur train paper guide 304 rubs, thus cannot prevent from recording the damage of medium, the colour developing of undesirable part.Further, since it is sliding The limited space that size on the sub scanning direction of frame paper guide 304, printhead 103 can occupy, therefore, it is difficult to increase first Size on the sub scanning direction of outer peripheral face 701 or be difficult to make the second outer peripheral face 702 relative to the first outer peripheral face 701 significantly Depression.

Accordingly, guide reel 305 can also use and make the angle of inclination in tapering 705 in multiple phase change Shape.Specifically, it is also possible to guide reel 305 is set to following shape: reduce tapering 705 and the border of the first outer peripheral face 701 The angle of inclination (close to parallel with sub scanning direction) at place, and increase inclining of the tapering 705 boundary with the second outer peripheral face 702 Rake angle.Thereby, it is possible to prevent from recording the damage of medium, the colour developing of undesirable part.

As described above, the printer 100 of embodiment involved in the present invention is characterised by possessing printing 103, platen 203 and guide reel 305, guide reel 305 according to the difference of the position on axis direction, make external diameter by Different according to such a way: make in outer peripheral face, on main scanning direction not with print needle from prominent prominent of printhead 103 First outer peripheral face 701 of the position that position is adjacent is more prominent to platen 203 side than end face, and, make at main scanning direction On the second outer peripheral face 702 of the position adjacent with this extrusion position be positioned at than the first outer peripheral face 701 by the position of center axis.

Printer 100 according to embodiment involved in the present invention, by main scanning direction with print needle from beating Position that extrusion positions that print 103 is prominent are adjacent and position in addition thereof make the external diameter of guide reel 305 different, thus utilize Record position after this guide reel 305 does not just record with printhead 103 contacts and makes printhead 103 separate with record medium, energy Enough prevent from recording medium to be rubbed by printhead 103.Thereby, it is possible to prevent from causing record because recording surface is rubbed by printhead 103 The situation that face is contaminated.

It addition, the printer 100 of embodiment involved in the present invention is characterised by possessing being positioned at printhead Ink ribbon 502 between 103 and platen 203 carries out the ribbon cartridge 104 kept, and guide reel 305 is arranged with following state: make First outer peripheral face 701 on printhead 103 direction opposed with platen 203 than ink ribbon 502 to platen 203 pleurapophysis Go out.

Printer 100 according to embodiment involved in the present invention, does not make guide reel 30 touch by by print needle The front end prominent from printhead 103 strike record medium across ink ribbon 502 and record position after recording, but utilize should Guide reel 305 makes printhead 103 separate with record medium such that it is able to prevent the record position after just recording by printhead 103 Friction.

Thereby, it is possible to prevent because of before ink is dried record position rubbed by printhead 103 and cause undried ink elongate And make the situation that recording surface is contaminated.It is attached to guide reel 305 it addition, be prevented from undried ink and prevent because of attached In guide reel 305 ink again be needed on record medium and cause recording surface to be contaminated.

It addition, the printer 100 of embodiment involved in the present invention is characterised by, possess by the first component 301, The force application mechanism that two components 302 and force application component 303 are constituted, guide reel 305 possesses tapering 705, and this tapering 705 is arranged on Between first outer peripheral face 701 and the second outer peripheral face 702, and tilt relative to sub scanning direction in the way of external diameter is the most different.

Printer 100 according to embodiment involved in the present invention, utilizes force application mechanism will record medium all the time to beating Print 103 sides force and this record medium is pressed on printhead 103, the most no matter recording the thickness of medium how can be by Printhead 103 remains constant with the gap of record medium, and, by this force, record medium is being pressed on guide reel In the case of 305, owing in guide reel 305, the first outer peripheral face 701 do not have with the boundary member of the second outer peripheral face 702 Edge, also therefore is able to prevent the active force of force application mechanism from acting locally on record medium.

Thereby, it is possible to prevent because making the external diameter difference of guide reel 305 cause record to be situated between according to the position on axis direction There is the situation of damage in matter, especially in the case of the record medium using pressure-sensitive colour developing type, it is possible to prevents because of external force local Act on this record medium and make unnecessary position develop the color.

It addition, the printer 100 of embodiment involved in the present invention is characterised by, guide reel 305 possesses rake 706, the two ends that this rake 706 is arranged on axis direction, and in the way of the closer to end side, external diameter is the least relative to Sub scanning direction tilts.

Printer 100 according to embodiment involved in the present invention, owing to not having limit at the both ends of guide reel 305 Edge, also therefore is able to prevent the active force of force application mechanism from acting on record medium partly in the case of being provided with guide reel 305.

Thereby, it is possible to prevent causing recording medium because arranging guide reel 305 situation of damage occurs, especially using In the case of the record medium of pressure-sensitive colour developing type, it is possible to prevent acting on this record medium partly because of external force and make unnecessary Develop the color in position.

Additionally, due to guide reel 305 leading section does not have edge, and tilt in the way of diameter diminishes towards end, Therefore when record medium is inserted into printer 100, this record medium will not collide the end of guide reel 305 edge and By tilting to be carried swimmingly.

It addition, the printer 100 of embodiment involved in the present invention is characterised by, the outer peripheral face of guide reel 305 Size on axis direction is longer than the size on the axis direction of extrusion position.

Printer 100 according to embodiment involved in the present invention, it can be ensured that the first outer peripheral face 701 and record medium Contact scope, it is possible to prevent because of record medium thickness etc. cause directed roller 305 to press part beyond part float, The most the thickness of printing medium is not driven and guide reel 305 can be utilized reliably will to record medium to platen 203 Side exerts a force.

Thus, such as, using the record medium of the book shapes such as booklet, multiple the record medium such as carbon paper of stacking as note In the case of record object, independently it is able to ensure that good record quality with (as the record object) hinge opened.

It addition, the printer 100 of embodiment involved in the present invention is characterised by, the radial direction of guide reel 305 On size be used for recording the maximum thickness gauge modest ability of the record medium of object.

Printer 100 according to embodiment involved in the present invention, the thickness of printing medium is not driven and can Prevent the part beyond the part causing directed roller 305 press because of the thickness etc. of record medium from floating, so that record Jie Matter contacts with printhead 103, it is possible to utilize guide reel 305 to make printhead 103 be reliably separated with record medium.

Thus, such as using the record medium of the book shapes such as booklet, overlap with multiple the record medium such as carbon paper as In the case of record object, independently it is able to ensure that good record quality with the hinge opening (as record object).

It addition, the printer 100 of embodiment involved in the present invention is characterised by, printhead 103 possesses inclined plane 304a, this inclined plane 304a is arranged on the two ends on the end face of platen 203 side and main scanning direction, and to roll up with platen The mode that cylinder 203 separates tilts.

Printer 100 according to embodiment involved in the present invention, printhead 103 can be by main scanning direction The end of record medium and towards with the opposed position of record medium when not damaging the end of this record medium smooth and easy Ground is mobile.Thereby, it is possible to guarantee good record quality.

Industrial applicibility

As described above, printer involved in the present invention can be along beating that main scanning direction moves back and forth for possessing The printer of print head is useful, and the record medium of the type that is particularly suited for developing the color pressure-sensitive is as the printer of record object.

Claims (7)

1. a printer, it is characterised in that

Described printer possesses:

Shower nozzle, it is can arrange in the way of moving back and forth along main scanning direction, and possesses when operation of recording optionally Prominent multiple print needles；

Platen, it is opposed with described shower nozzle in the whole region of the scope that moves back and forth of described shower nozzle；And

Guide reel, the end face of its described platen side in described shower nozzle and the position opposed with described platen, When make the part of outer peripheral face than described end face to described platen side prominent, it is possible to around be orthogonal to described master The axis rotation that the sub scanning direction of scanning direction is parallel,

Described guide reel, according to the difference of the position on described axis direction, makes external diameter different as follows: to make institute State in outer peripheral face, on described main scanning direction not with described print needle from the adjacent position of the extrusion position that described shower nozzle is prominent The first outer peripheral face putting place is more prominent to described platen side than described end face, and, make on described main scanning direction with institute The second outer peripheral face stating the adjacent position of extrusion position is positioned at the position leaning on described center axis than described first outer peripheral face.

Printer the most according to claim 1, it is characterised in that

Described printer possesses the colour band keeping the ink ribbon being positioned between described shower nozzle and described platen to be protected Hold component,

Described guide reel is arranged with following state: make described first outer peripheral face opposed with described platen at described shower nozzle The described ink ribbon that on direction, ratio is kept component to keep by described colour band is prominent to described platen side.

Printer the most according to claim 1 and 2, it is characterised in that

Described printer possesses force application mechanism, this force application mechanism on the direction that described shower nozzle is close with described platen to this At least one party in shower nozzle and this platen exerts a force,

Described guide reel possesses tapering, and this tapering is arranged between described first outer peripheral face and described second outer peripheral face, and in addition The most different mode in footpath tilts relative to described sub scanning direction.

Printer the most according to claim 3, it is characterised in that

Described guide reel possesses rake, and this rake is arranged on the two ends on described axis direction, and with the closer to end side And the least mode of external diameter tilts relative to described sub scanning direction.

Printer the most according to any one of claim 1 to 4, it is characterised in that

Size ratio on the described axis direction of the outer peripheral face of described guide reel is on the described axis direction of described extrusion position Size is long.

Printer the most according to any one of claim 1 to 4, it is characterised in that

Size on the radial direction of described guide reel is used for recording the maximum thickness gauge modest ability of the record medium of object.

Printer the most according to any one of claim 1 to 5, it is characterised in that

Described shower nozzle possesses inclined plane, and this inclined plane is arranged on end face and the described main scanning direction of described platen side Two ends, and tilt in the way of separating with described platen.