CN103963494A - Printer - Google Patents

Abstract

The invention provides a printer that can increase printing quality by suppressing the number of components and increase of assembling working hours with a simple structure and preventing color mixing of unexpected colors when a plurality of colors are used to print a series of information. In the printer (10), a pair of side frames (10) and a band plate (110) are connected by enabling protrusions (501A,501B) arranged on the band plate (110) and holes (502A,502B) arranged on the pair of side frames (10) to be inosculated; and the hole (502A) relevant to the connection of one side frame (101A) and the band plate (110) presents a long hole shape with an opposed direction of the printer (103) and a printing member (102) as a length direction.

Description

Printer

Technical field

The present invention relates to print by ink ribbon the printer of action.

Background technology

In the past, there is the printer that prints action by ink ribbon.In such printer, (following by switching multiple color being arranged in to the ink ribbon that band shape forms along width, suitably be called " polychrome ink ribbon ") position of the tape drum that keeps, switch and print the color using in action, thereby can realize the printing action that the black liquid based on multiple color carries out.

Particularly, in the past, there is following technology: periodically adjust the tape drum that can swing taking fulcrum as fulcrum by the orientation of the color in the polychrome ink ribbon keeping along tape drum with respect to the angle of inclination that impresses member, print thereby switch color (the following patent documentation 1 of reference using in action.)。

In addition, particularly, in the past, there is following technology: the ink ribbon that tape drum is kept is extracted out and the gear-box of the use of reeling is configured to along with the swing of tape drum and swings (with reference to following patent documentation 2.)。

In addition, particularly, in the past, there is following technology: the ink ribbon that tape drum is kept extract out and the tape spool of the use of reeling on deflection division is set, the deflection along with the switching of the position of tape drum of this deflection division, even if thereby in the situation that having occurred because of switching position tape drum, also ink ribbon can be extracted out reliably and reels (with reference to following patent documentation 3.)。

[formerly technical literature]

[patent documentation]

[patent documentation 1] Japanese kokai publication sho 61-54974 communique

[patent documentation 2] Japanese kokai publication hei 5-229237 communique

[patent documentation 3] Japanese kokai publication hei 6-227106 communique

[summary of invention]

[problem that invention will solve]

But there is the such problem of complex structure that tape drum is tilted in the existing technology that above-mentioned patent documentation 1 or patent documentation 2 are recorded.In addition, there is following problem in the existing technology that above-mentioned patent documentation 3 is recorded: under the state that makes deflection division deflection, tape spool and tape drum link, therefore because the friction tape spool of tape spool and tape drum and the contact position of tape drum become high temperature, thereby cause plastic deformation sometimes.

In addition, also there is following problem in the existing technology that above-mentioned patent documentation 3 is recorded: owing to realizing deflection division by slit being set at the outer peripheral face of tape spool, and the therefore intensity difference of tape spool (especially deflection division).Therefore, the existing technology that above-mentioned patent documentation 3 is recorded for example in ink ribbon, card occurs hangs and waits and the extraction of ink ribbon and locking that coiling stops while occurring, and breakage may occur tape spool.

Summary of the invention

The present invention is in order to eliminate the problem points of above-mentioned prior art, its object is to provide a kind of printer, can be by having suppressed parts numbers of packages, having assembled the simple structure that increase man-hour, prevent from making while using multiple color to print a series of information the situation of the color generation colour mixture outside expectation, thereby realize the raising of print quality.

[solution]

Realize object in order to solve above-mentioned problem, printer of the present invention is characterised in that to possess: printhead, and its pair of frames by arranged opposite supports and carries out the printing of recording medium to move, impression member, it is supported by described pair of frames, and so that mode and the described printhead arranged opposite of the transport path of carrying described recording medium between itself and described printhead, tape drum, it possesses winding mechanism, and this winding mechanism is identical and remain along described length direction and extract out freely and reel freely along the different ink ribbon of width color by color alongst, box retaining member, itself and described pair of frames link respectively, be arranged to coupling position to link with described pair of frames and can swing as fulcrum, and under the state described ink ribbon being positioned between described printhead and described impression member, described tape drum is kept, tape spool, the described winding mechanism of itself and described tape drum links, and by described ink ribbon being extracted out and reeled around axle center being rotated, and switching mechanism, it is by swinging described box retaining member, switch the connecting state of described winding mechanism and described tape spool, and the color of the just right described ink ribbon of the record position recording with described printhead, wherein, in the hole that described pair of frames and described box retaining member arrange by the either party in described pair of frames or described box retaining member or recess, the chimeric protuberance that has the opposing party in described pair of frames or described box retaining member to arrange is bonded, the hole that the framework of a side in described pair of frames and the link of described box retaining member are related or recess present the long hole shape taking the opposed direction of described printhead and described impression member as length direction.

In addition, printer of the present invention, on the basis of above-mentioned invention, is characterized in that, described tape spool is arranged on the central authorities of the print range printing than described printhead by the position of the frame side of one.

[invention effect]

According to printer of the present invention, play effect as follows: can be by having suppressed parts numbers of packages, having assembled the simple structure that increase man-hour, prevent from making while using multiple color to print a series of information the situation of the color generation colour mixture outside expectation, thereby realize the raising of print quality.

Brief description of the drawings

Fig. 1 be the key diagram that represents the structure of the printer of embodiments of the present invention (one of).

Fig. 2 is the key diagram that represents the structure of the printer of embodiments of the present invention (two).

Fig. 3 is the key diagram of the C-C section in presentation graphs 2.

Fig. 4 is the key diagram of the section after representing the printer of embodiments of the present invention to cut open.

Fig. 5 be the key diagram that represents the state of observing from the side of the printer of embodiments of the present invention (one of).

Fig. 6 be the key diagram that represents the state of observing from the side of the printer of embodiments of the present invention (one of).

Fig. 7 is the key diagram that represents the position relationship of tape spool and knob.

Fig. 8 in the printer being illustrated in is in the past positioned band plate the tape spool of state of the second place and the key diagram of the periphery of knob.

Fig. 9 is illustrated in the printer of embodiments of the present invention band plate to be positioned the tape spool of state of the second place and the key diagram of the periphery of knob.

Figure 10 be represent the printer of embodiments of the present invention, band plate is positioned the key diagram of the state that the arrow A direction from Fig. 1 of the printer of the state of the second place observes.

[symbol description]

100 printers

101 body side frames

102 impression members

103 printheads

106 ink ribbons

107 tape drums

108 knobs

110 band plates

303 tape spools

304 recesses

501 protuberances

502 holes

Detailed description of the invention

Below, with reference to accompanying drawing, explain printer of the present invention preferred embodiment.

First, the structure of the printer to embodiments of the present invention describes.Fig. 1 and Fig. 2 are the key diagrams that represents the structure of the printer of embodiments of the present invention.In Fig. 1, represent to be provided with the state of this printer observed from oblique upper under the state of printer of embodiments of the present invention.In Fig. 2, the state of the printer of the embodiments of the present invention that the arrow A direction of expression from Fig. 1 observed.

In Fig. 1 and Fig. 2, the printer 100 of embodiments of the present invention possesses the pair of side frames 101 as pair of frames (101A, 101B) of arranged opposite.Between pair of side frames 101, be formed with the medium transport path (omitting diagram) of carrying as the recording medium that records object of printer 100.Pair of side frames 101 so that medium transport path between and opposed mode configures.

In printer 100, can use for example circumvolution to become the rectangular paper of the state of roller web-like as the recording medium that records object of printer 100.Between pair of side frames 101, be provided with the roller as conveying mechanism of carrying the recording medium in medium transport path to prescribed direction to (omitting diagram).

Roller to make medium transport path between and arranged opposite.The roller that forms the side in the right pair of rolls of roller links with the illustrated paper feeding motor of omission via gear row, and these gear row are arranged on the body side frame of the side in pair of side frames 101.Paper feeding motor for example can be arranged between pair of side frames 101.

The roller that forms the opposing party in the right pair of rolls of roller can be by be realized by the driven voller that omits the illustrated force application mechanism application of force with the mode of a side roller butt.Thus, can between the right pair of rolls of formation roller, clamp recording medium.And, by forming the roller rotation that drives paper feeding motor to make a side under the state that has clamped recording medium between the right pair of rolls of roller, thus can be in medium transport path conveying recording medium.

Between pair of side frames 101, be provided with the printing portion being formed by impression member 102, printhead 103 etc.Printhead 103 can use the printhead (impact printhead) of the recording processing that for example impacts mode.

In this case, printhead 103 possesses multiple pins (wire) of harness.The front end of the multiple pins (wire) in printhead 103 is arranged in rectangular.Multiple pins (wire) can be distinguished side-prominent to impression member 102 independently.In the printer 100 of present embodiment, the part of arranging by the front end of multiple pins (wire) realizes the record position of printhead 103.

Printhead 103 is equipped on balladeur train 104.Balladeur train 104 is arranged to can move back and forth along the axis direction of this balladeur train axle 201 with respect to balladeur train axle 201, and this balladeur train axle 201 extends taking the width of recording medium as axis direction.Balladeur train axle 201 is supported by pair of side frames 101.

Pair of side frames 101 near of balladeur train axle 201 to this balladeur train axle 201 abreast extended driving shaft 202 support.The gear row 105 that arrange on driving shaft 202 and the side's in pair of side frames 101 body side frame 101A link, and follow to drive the rotation of the gear row 105 that sledge drive motor (with reference to the symbol 301 in Fig. 3) causes and be rotated.

Be provided with the helicla flute 202a of shape twist at the outer peripheral face of driving shaft 202.On helicla flute 202a, illustrated projection is omitted in engaging, and this projection is possessed by the balladeur train 104 that carries printhead 103.Balladeur train 104 is supported as making printhead 103 just right with impression member 102 all the time by balladeur train axle 201 and driving shaft 202.

The clamped position of the projection on helicla flute 202a is followed the rotation of balladeur train axle 201 and is moved along the axis direction of balladeur train axle 201.Thus, balladeur train 104 moves back and forth along the axis direction of balladeur train axle 201, thereby the printhead 103 that is equipped on this balladeur train 104 can move back and forth along the axis direction of balladeur train axle 201.

Impression member 102 with in the whole moving range of printhead 103, make transport path its with printhead 103 between mode and printhead 103 opposed (just to) setting.Impression member 102 is so that mode and the printhead 103 of the recording medium of carrying in transport path between itself and printhead 103 is opposed, and in the time printing the execution of action, from the back side (face just right with the impression member 102) side of printing surface (face just right with printhead 103), the recording medium that the pin being possessed by printhead 103 (wire) is pressed supports.

When the execution of printing in printer 100 action, make ink ribbon 106 be clipped in printhead 103 and impress between member 102.Ink ribbon 106 is positioned between printhead 103 and impression member 102 in the whole region of the moving area of printhead 103.

Thus, printhead 103 is regardless of the position on the width of recording medium, all across ink ribbon 106 and opposed with impression member 102.In the time printing the execution of action, recording medium is transferred between ink ribbon 106 and impression member 102.Ink ribbon 106 is strip, is held in tape drum 107 with the state of alongst extracting out freely and reel freely.

Ink ribbon 106 alongst color is identical, and along width (corresponding to the position on width) and color difference.In the present embodiment, after, be that the ink ribbon 106 of the printing of red these the two kinds of colors of black and the second color describes to carrying out the first color.In the ink ribbon 106 of present embodiment, the first color is that band and second color of black is the state disposed adjacent that red band aligns abreast with length direction separately.

Ink ribbon 106 is not limited to the ink ribbon that can carry out the printing of two kinds of colors.Also can use identical color alongst and be that three kinds of colors more than color are arranged to the ink ribbon 106 that band shape forms along width.In addition, ink ribbon 106 is not limited to the ink ribbon that possesses multiple different color.Also can use identical color and lightness or the different color of colourity are arranged to the ink ribbon 106 that multiple band shapes form along width.

The outside mode that ink ribbon 106 is housed in tape drum 107 by tape drum 107 with a part and another part is positioned at tape drum 107 keeps.Tape drum 107 is so that the mode that the outside part that is positioned tape drum 107 in ink ribbon 106 is positioned between printhead 103 and impression member 102 keeps ink ribbon 106.

Particularly, tape drum 107 possesses a pair of arm 107a.A pair of arm 107a is arranged on the two ends of tape drum 107 on the width of recording medium.A pair of arm 107a keeps ink ribbon 106 each other at front end with the state of hanging up, thus a part for ink ribbon 106 is positioned to the outside of tape drum 107.Thus, tape drum 107 forms spatial portion, and this spatial portion is formed by the ink ribbon 106 of accommodating the box main body 107b of ink ribbon 106 and hang up in tape drum 107 between a pair of arm 107a.

Printhead 103, impression member 102 and tape drum 107 along orthogonal with the throughput direction of recording medium and with the orthogonal direction (the arrow B direction in Fig. 1 and Fig. 2) of the width of paper using with the arranged in order of impression member 102, printhead 103, tape drum 107.Under the state that is provided with printer 100 from above while observing this printer 100 (with reference to Fig. 2), impression member 102 and tape drum 107 are upper in the orientation (arrow B direction) of printhead 103, impression member 102 and tape drum 107 so that printhead 103 between mode be arranged on each other the contrary position on printhead 103.

Ink ribbon 106 is with the width corresponding with the size in the space in this tape drum 107 in tape drum 107, and the state that replaces continuous accordion (rugosity) to be folded into outer folding and infolding is accommodated.In tape drum 107, be provided with mechanism's (hereinafter referred to as " winding mechanism ") that the ink ribbon 106 being housed in tape drum 107 is remained to extraction freely and reels freely.Winding mechanism can be by being for example arranged to be rotated taking the width of ink ribbon 106 as axis direction the realization such as gear (omitting diagram).

Tape drum 107 possesses the gear interlock possessing with winding mechanism and the knob 108 rotating.Knob 108 is arranged to be rotated taking the width of ink ribbon 106 as axis direction, and in the case of operator etc. with finger grip and be rotated etc. and apply and make external force that this knob 108 rotates, this knob 108 also rotates.Thus, operator can be by manually extracting and reel ink ribbon 106 out.

On tape drum 107, on the face identical with the face that is provided with knob 108, be provided with the handle portion 109 of mounting or dismounting use.The handle portion 109 of mounting or dismounting use forms bending shape, makes easily to control by operator's finger.The handle portion 109 of mounting or dismounting use for example can be integrally formed with tape drum 107.In tape drum 107, the handle portion 109 of mounting or dismounting use is not limited to illustrated shape.The handle portion 109 of mounting or dismounting use also can be set in addition, on tape drum 107.

Knob 108 is along connecting tape drum 107 with the throughput direction of recording medium and the orthogonal direction of the width of recording medium.Knob 108 connect in tape drum 107 with the face of face opposition side of handle portion 109 that is provided with mounting or dismounting use.On knob 108, in the face of in tape drum 107 be provided with on the position of face of face opposition side of handle portion 109 of mounting or dismounting use, be provided with from the recess (with reference to the symbol 304 Fig. 3) of the depression of the inner side towards tape drum 107 of this opposition side.

Tape drum 107 is arranged to can install and remove with respect to the band plate 110 as box retaining member linking with pair of side frames 101.Thus, tape drum 107 is arranged to respect to by pair of side frames 101 and be fixed on the printer main body that the member in this pair of side frames 101 forms and can install and remove.Tape drum 107, under the state that is installed on printer main body, is positioned in the spatial portion being formed by box main body 107b and ink ribbon 106 printhead 103, and this ink ribbon 106 is hanged up between a pair of arm 107a.

Fig. 3 is the key diagram of the C-C section in presentation graphs 2.In Fig. 3, tape drum 107 is by being positioned on band plate 110 and kept by this band plate 110.The protuberance (with reference to the symbol 501 in Fig. 5 and Fig. 6) arranging at the two ends of the width (direction identical with the width of recording medium) of band plate 110 is inserted in the hole (with reference to the symbol 502 in Fig. 5 and Fig. 6) arranging respectively in pair of side frames 101, and projection is engaged with hole, make thus band plate 110 and pair of side frames 101 link respectively.

The mode that the cross section of the projection that band plate 110 possesses when cutting this projection open by the plane parallel with the throughput direction of recording medium becomes circular forms general cylindrical shape shape, and this projection is to the direction towards pair of side frames 101 is outstanding respectively.Band plate 110 is, to be arranged to around the mode of rotating by the axle center of each coupling position the each coupling position linking with pair of side frames 101 can swing respectively with respect to pair of side frames 101 as fulcrum.

Band plate 110 is by swinging, switch the position of the ink ribbon 106 between printhead 103 and impression member 102 and ink ribbon 106 with respect to printhead 103 angle with the opposed direction (arrow D direction) of impression member 102.Band plate 110 can rotate between primary importance and the second place, this primary importance is that to make the first color be the just right position of record position that black and printhead 103 record, and this second place is to make the second color just right position of record position that red and printhead 103 record.

Band plate 110 is optionally positioned primary importance or the second place.Band plate 110 (for example moves to one end in print area at printhead 103, paper left end in Fig. 2) time be positioned primary importance, for example, in the time that moving to the other end (, the paper right-hand member in Fig. 2) in print area, printhead 103 is positioned the second place.

In the present embodiment, tape drum 107 becomes the state of level in the time being positioned primary importance, in the time being positioned the second place, becomes the state tilting in the arm 107a side of tape drum 107 mode higher than box main body 107b.In printer 100, by the color of the just right ink ribbon 106 of the record position that band plate 110 rotated, can switch to record with printhead 103.

Be provided with and omit illustrated switching cam mechanism in (side contrary with tape drum 107) between pair of side frames 101 and below band plate 110.Switching cam mechanism is arranged near of the body side frame 101A (the paper right side in Fig. 2) of the side who is provided with gear row 105 in pair of side frames 101.

Switch cam mechanism and possess the cam rotating with the rotation interlock of the sledge drive motor 301 that driving shaft 202 is driven.Cam is to being rotated with the direction of the direction of rotation interlock of sledge drive motor 301, and with the positive and negative rotation of this sledge drive motor 301 interlock and carry out positive and negative rotation all the time.Switch cam mechanism and be configured to, during printhead 103 moves to the other end (or from other end to one end) from one end of predefined moving area (moving area), the direction of rotation of cam is switched.

Switch cam mechanism switches band plate 110 position according to the position of printhead 103.Particularly, switch cam in the time that band plate 110 is positioned under the state of the second place that printhead 103 moves to the paper right-hand member in Fig. 2, the position of the band plate 110 that is positioned the second place is switched to primary importance.By switching cam mechanism by fixing the band plate 110 that is positioned primary importance, can suppress thus rocking of tape drum 107 that band plate 110 supports in primary importance.

Be provided with and omit illustrated resetting-mechanism in (side contrary with tape drum 107) between pair of side frames 101 and below band plate 110.Resetting-mechanism is arranged near of the different the opposing party's of the body side frame from being provided with gear row 105 in pair of side frames 101 body side frame 101B (body side frame 101 in the paper left side in Fig. 2).

Resetting-mechanism possess between pair of side frames 101 and near the retention tab of setting the opposing party's body side frame, the engaging stage portion that this retention tab is arranged to the force application component of the direction application of force deviating from from the opposing party's body side frame, at band plate 110, to band plate 110 to the force application component of the primary importance application of force etc.

Resetting-mechanism switches the position of band plate 110 according to the position of printhead 103.Particularly, resetting-mechanism is in the time that band plate 110 is positioned under the state of primary importance that printhead 103 moves to the paper left end in Fig. 2, the position of the band plate 110 that is positioned primary importance is switched to the second place, and the position after switching, to band plate 110 application of forces, so that this band plate 110 stops moving.By resetting-mechanism, the band plate 110 that is positioned the second place is fixed, can suppresses thus rocking of tape drum 107 that band plate 110 supports in the second place.

In printer 100, by switching cam mechanism and resetting-mechanism, the position of switching band plate 110 according to the position of printhead 103, is positioned this band plate 110 for primary importance or the second place, thereby can make this band plate 110 swing.In addition, in printer 100, the band plate 110 after swinging can be fixed on to each position (primary importance or the second place) by switching cam mechanism and resetting-mechanism.In embodiments of the present invention, can realize switching mechanism by switching cam mechanism and resetting-mechanism.

On printer main body, be provided with tape spool 303, this tape spool 303 is side-prominent towards tape drum 107 from printer main body side, and via the hole 302 arranging on band plate 110, band plate 110 is connected.It is that the central authorities of the print range that prints of printhead 103 are by the position of a side body side frame 101A side that tape spool 303 is arranged on than the moving range of printhead 103.The fore-end of tape spool 303 becomes the conical in shape tilting in more forward distolateral thinner mode.

Tape spool 303 links with sledge drive motor 301, is rotated by the driving force that is passed this sledge drive motor 301.Tape spool 303 is only to a direction rotation, particularly, and only to extracting out and the direction rotation of the ink ribbon 106 of reeling.Particularly, for example, by tape spool 303 and sledge drive motor 301 are linked via one-way clutch, can make thus this tape spool 303 only to a direction rotation.

Front end at tape spool 303 is provided with gear teeth.The inner peripheral surface of the recess 304 possessing at above-mentioned knob 108 is provided with at tape drum 107 and is held under the state of band plate 110 and gear teeth meshed gears tooth.Thus, be held at tape drum 107 under the state of band plate 110, follow the rotation of tape spool 303 and the winding mechanism in tape drum 107 is moved, thereby can ink ribbon 106 be extracted out and be reeled by the driving force from printer main body side.

Fig. 4 is the key diagram of the section after representing the printer of embodiments of the present invention 100 to cut open.In Fig. 4, be illustrated in the band plate 110 that is positioned primary importance in the printer 100 shown in Fig. 3 and be located in the state of the second place.In Fig. 3, in the situation that band plate 110 is positioned primary importance, recess 304 with tape spool 303 so that the axis direction of knob 108 and the axis direction of tape spool 303 to become parallel mode chimeric.

In addition, in this case, recess 304 with tape spool 303 so that the axle center of knob 108 mode consistent with the axle center of tape spool 303 is chimeric.In Fig. 4, in the time that band plate 110 is positioned the second place, recess 304 changes with the chimerism of tape spool 303, and the axle center of the axis direction of knob 108 and tape spool 303 becomes not parallel.

Fig. 5 and Fig. 6 are the key diagrams of the state of observing from the side of the printer 100 of embodiments of the present invention.In Fig. 5 and Fig. 6, all represent the state that the side's who is provided with gear row 105 from pair of side frames 101 of the printer 100 of embodiments of the present invention body side frame 101A side (along the direction in paper right side to the left side in Fig. 2) is observed.In Fig. 5, represent that band plate 110 is positioned the state of primary importance, in Fig. 6, represent that band plate 110 is positioned the state of the second place.

In Fig. 5 and Fig. 6, symbol 501A is illustrated in the protuberance linking with a side body side frame 101A in the protuberance that the two ends of the width (direction identical with the width of recording medium) of band plate 110 arrange.In addition, in Fig. 5 and Fig. 6, symbol 502A represents a side body side frame 101A and the related hole of the link of band plate 110.

The related hole 502A of link of body side frame 101A and band plate 110 presents taking printhead 103 and impresses the opposed direction (the arrow D direction in Fig. 3) of member 102 as the long hole shape of length direction.The related hole 502B (omitting diagram) of the body side frame 101B of the opposing party in pair of side frames 101 and the link of band plate 110 presents the circle of the diameter equal with the diameter of the protuberance 501B arranging on tape drum 107 (omitting diagram).Protuberance 501 (501A, 501B) and hole 502 (502A, 502B) are arranged on the both sides on the width of recording medium.

The angle of inclination etc. that the length of hole (being formed as the hole of long hole shape) 502A on the body side frame 101A that is arranged on a side in pair of side frames 101 and the link of band plate 110 related hole 502A, 502B can be band plate 110 according to the amplitude of fluctuation of the size of the such as width of ink ribbon 106, band plate 110 is suitably set.Particularly, the size that is formed as the length direction of the hole 502A of long hole shape is for example formed as 2 times of left and right of the diameter of the protuberance 501A chimeric with this hole 502A.

Hole 502A is arranged on the body side frame 101A of the side who approaches tape spool 303 in pair of side frames 101.Hole 502A is not limited on the body side frame 101A that is set in a side.The hole that is formed as long hole shape also can be arranged on the body side frame 101B of the opposing party in pair of side frames 101.

In printer 100, also can replace hole 502A, 502B that pair of side frames 101 is connected respectively that pair of side frames 101 and the link of band plate 110 relate to, and be formed as the recess (omission illustrates) of the shape pair of side frames 101 not being connected respectively.

Like this, while realizing the link of body side frame 101 and band plate 110 replacing protuberance 501A, 501B and hole 502A, 502B by protuberance 501A, 501B and recess, the shape of opening edge is formed as being arranged on a side's who approaches tape spool 303 body side frame 101A taking the opposed direction (arrow B direction) of printhead 103 and impression member 102 as the recess of the long hole shape of length direction.

In printer 100, by omitting illustrated paper feeding Motor Drive conveying roller rotation, carry out thus conveying recording medium, and drive driving shaft 202 to rotate by sledge drive motor 301, making thus balladeur train 104 is that printhead 103 moves back and forth, and multiple pins (wire) that printhead 103 is possessed are optionally side-prominent to impression member 102, print action thereby carry out.In addition, in printer 100, in the time printing the execution of action, drive tape spool 303 to rotate by sledge drive motor 301, the ink ribbon 106 thus tape drum 107 being kept is extracted out and reels.

Fig. 7 is the key diagram that represents the position relationship of tape spool 303 and knob 108.In Fig. 7, represent that band plate 110 is positioned the position relationship of tape spool 303 under the state of primary importance and knob 108.In Fig. 7, be positioned at band plate 110 under the state of primary importance, the axle center of knob 108 is consistent with the axle center of tape spool 303.Thus, tape spool 303 rotates produced driving force and transmits reliably to knob 108, thereby ink ribbon 106 can be extracted out accurately and reeled.

Move to the paper right-hand member in Fig. 2 at printhead 103, band plate 110 is by switching the action of cam mechanism, swing taking the coupling position that links respectively with pair of side frames 101 as fulcrum, thus switching position and be positioned primary importance.In addition, move to the paper left end in Fig. 2 at printhead 103, band plate 110 is by the action of resetting-mechanism, swing taking the coupling position that links respectively with pair of side frames 101 as fulcrum, thus switching position and be positioned the second place.

As printer in the past, the hole arranging in pair of side frames 101 all presents the diameter equal with the diameter of projection arranging on band plate 110 circular, tape drum 107 is fixed with the coupling position of pair of side frames 101, and band plate 110 is taking the position fixed as fulcrum swings.Therefore, band plate 110 swings under the state of the width keeping parallelism with respect to recording medium.

Fig. 8 is the key diagram of the tape spool 303 of the state that in the printer being illustrated in the past, band plate 110 is positioned the second place and the periphery of knob 108.In Fig. 8, as printer in the past, if band plate 110 is taking the position fixed as fulcrum swings, in the time that tape drum 107 is positioned the second place, coupling position place at tape drum 107 with tape spool 303, depart from the axle center (with reference to the symbol 802 in Fig. 8) of tape spool 303 in the axle center (with reference to the symbol 801 in Fig. 8) of knob 108.

Under this state, tape drum 107 swings taking the coupling position that links with body side frame 101 as fulcrum, the coupling position place with tape spool 303 at tape drum 107 thus, although keep out of the way from the extended line in the axle center of tape spool 303 at the center in the axle center of knob 108, the position of tape spool 303 is fixed.Therefore, between tape drum 107 and tape spool 303, produce each other the power (will correct the power departing from) that a side will pull the opposing party.

Will correct by this power departing from, to tape spool, 303 effects have the rearward active force of (direction separating from impression member 102) application of force of this tape spool 303 tape drum 107.In addition, will correct by this power departing from, to tape drum, 107 effects have the forwards active force of (direction of approaching impression member 102) application of force of this tape drum 107 tape spool 303.Because tape drum 107 becomes one with band plate 110 under the state that is placed in printer main body, to band plate, 110 effects have the forwards active force of (direction of approaching impression member 102) application of force of this band plate 110 via tape drum 107 therefore will to correct the power departing from.

Amount of movement is larger, and correct the above-mentioned active force effect that the power that departs from causes must be larger.That is, above-mentioned active force on tape drum 107, from the coupling position away from linking with body side frame 101 and the side that approaches impression member 102 than approaching this coupling position and obtaining greatly away from a side effect that impresses member 102.And, the power departing from the axle center by the such axle center that will correct knob 108 and tape spool 303, to band plate, 110 effects have the power of this band plate 110 to arrow 803 direction rotations in Fig. 8 that makes.

Like this, in printer in the past, to make the power (will correct the power that departs from) of this band plate 110 to arrow 803 direction rotations in Fig. 8 by what band plate 110 was acted on, may make the band plate 110 that will be positioned at the second place depart from from this second place.And, in the situation that band plate 110 departs from from the second place, may make the color of the color that is not original and the record position of printhead 103 just right, thereby possibly cannot obtain the print result of desired color.

In the time will being positioned at the band plate 110 of the second place and departing from from this second place, particularly, for example, although be the situation of printing red word originally, may produce the part situation just right with the record position of printhead 103 of the black in ink ribbon 106.In this case, can be created in the so-called colour mixture that is mixed with a part of black in red word.

In addition, in printer in the past, correct the masterpiece departing from for ink ribbon 106 external force that rearward (direction deviating from from impression member 102) pulls is played a role to this ink ribbon 106.When acting in ink ribbon 106 because of this tension force while having unnecessary tension force, effect have unnecessary tension force state ink ribbon 106 and not effect have compared with the ink ribbon 106 of state of tension force, may produce distortion, or possibly cannot extract out exactly or reel.And, therefore may in print result, produce colour mixture.In addition, in printer in the past, correct the masterpiece departing from and be used on the arm 107a that supports ink ribbon 106, may make arm 107a distortion.

On the other hand, the printer 100 of embodiments of the present invention as described above, the related hole 502B of the opposing party's body side frame 101B and the link of band plate 110 present with the circle of the roughly the same diameter opening of the diameter that is arranged on the protuberance 501B on band plate 110.Therefore,, when switching from the second place to primary importance or switch from primary importance to the second place in the position of band plate 110, band plate 110 swings in fixing position with respect to the opposing party's body side frame 101B.

In addition, as described above, the related hole 502A of a side body side frame 101A and the link of band plate 110 is long hole shape to the printer 100 of embodiments of the present invention.Therefore,, when switching from the second place to primary importance or switch from primary importance to the second place in the position of band plate 110, slide within this is the hole 502A of long hole shape with the chimeric protuberance 501A of hole 502A.

Particularly, to correct by above-mentioned the power departing from, have the forwards active force of (direction of approaching impression member 102) application of force of this band plate 110 being positioned band plate 110 effects of the second state via tape drum 107.Therefore, in the time switching from primary importance to the second place, band plate 110 will be corrected the power application of force departing from, and slides thus in the hole 502A that is long hole shape to the direction that approaches impression member 102.

Like this, when band plate 110 switches from the second place to primary importance in the position of this band plate 110, body side frame 101B with respect to the opposing party swings in fixing position, and is at this with the chimeric protuberance 501 in the hole 502 that is long hole shape that the hole 502 of long hole shape is interior slides to the direction that approaches impression member 102.Thus, band plate 110, in the time switching from primary importance to the second place, rotates the mode of a side body side frame 101A side shifting using the coupling position that itself and the opposing party's body side frame is linked as fulcrum.

Thus, band plate 110 tilts with respect to the width of recording medium than the mode of the opposing party's the more approaching impression member 102 of body side frame 101B side with a side body side frame 101A side, and the knob 108 of the tape drum 107 that band plate 110 keeps is moved to the direction that approaches impression member 102.

Fig. 9 is illustrated in the printer 100 of embodiments of the present invention band plate 110 to be positioned the tape spool 303 of state of the second place and the key diagram of the periphery of knob 108.In addition, Figure 10 be represent the printer 100 of embodiments of the present invention, band plate 110 is positioned the key diagram of the state that the arrow A direction from Fig. 1 of the printer 100 of the state of the second place observes.

In Fig. 9 and Figure 10, the printer 100 of embodiments of the present invention as described above, the hole 502 arranging on a side body side frame 101A is long hole shape, in the time that band plate 110 is swung, a side's who arranges on this band plate 110 protuberance 501 is interior to approaching the direction slip that impresses member 102 in the hole 502 that this is long hole shape.

To correct by above-mentioned the power departing from, make to be arranged on the protuberance 501 interior direction slip to approaching impression member 102 in the hole 502 that is long hole shape of the side on band plate 110, therefore band plate 110 is to make the mode of a side body side frame 101A sideway swivel carry out displacement as fulcrum the coupling position of the opposing party's body side frame 101B side.Thus, switch to the second place from primary importance by band plate 110, thereby the position of the body side frame 101A side of the side in band plate 110 is moved the size quantity shown in the symbol 1001 in Figure 10 with respect to primary importance to the direction that approaches impression member 102.Thus, the knob 108 of tape drum 107 is moved to the direction that approaches impression member 102.

In printer 100, make like this axle center (with reference to the symbol 901 in Fig. 9) of knob 108 and the axle center (with reference to the symbol 902 in Fig. 9) consistent (unanimous on the whole) of tape spool 303, can suppress the interference of recess 304 and tape spool 303.Thus, can in the situation that not increasing parts number of packages, suppress the interference of recess 304 and tape spool 303, thereby can be suppressed at the situation that produces colour mixture in print result.

As described above, the printer 100 of embodiments of the present invention possesses: a pair of body side frame 101 as framework by arranged opposite supports, and carries out the printhead 103 of the printing action to recording medium; Supported by pair of side frames 101, and so that the transport path of conveying recording medium between mode and the impression member 102 of printhead 103 arranged opposite.

And, the printer 100 of embodiments of the present invention possesses: tape drum 107, it possesses winding mechanism, and this winding mechanism is identical and remain along length direction and extract out freely and reel freely along the different ink ribbon 106 of width color by color alongst; As the band plate 110 of box retaining member, itself and pair of side frames 101 link respectively, be arranged to coupling position to link with pair of side frames 101 and can swing as fulcrum, and under state ink ribbon 106 being positioned between printhead 103 and impression member 102, tape drum 107 is kept; Tape spool 303, it links with the knob 108 of a part for the winding mechanism of formation tape drum 107, by ink ribbon 106 being extracted out and reeled around axle center rotation; And switching mechanism, it swings band plate 110, thus the color of the just right ink ribbon 106 of the record position that forms the knob 108 of a part of winding mechanism and the connecting state of tape spool 303 and record with printhead 103 is switched.

And, the printer 100 of embodiments of the present invention is characterised in that, pair of side frames 110 and band plate 110 be by making to be arranged on protuberance 501A, the 501B on band plate 110 and being arranged on chimeric being bonded of hole 502A, 502B in pair of side frames 101, and a side body side frame 101A and the related hole 502A of the link of band plate 110 form the long hole shape taking the opposed direction of printhead 103 and impression member 102 as length direction.

Printer 100 according to the embodiment of the present invention, in the time that band plate 110 is swung, in a side body side frame 101A and the related hole 502A of the link of band plate 110, the protuberance 501A chimeric with this hole 502A slided, can in the situation that winding mechanism and tape spool 303 are not interfered, winding mechanism and tape spool 30 be linked reliably thus.Thus, be each position that tape drum 107 is positioned at band plate 110, the record position that can make desired separately color and printhead 103 record is just right.

In addition, printer 100 according to the embodiment of the present invention, by only hole the 502A related link of a side body side frame 101A and band plate 110 being formed taking printhead 103 and impressing the opposed direction of member 102 as the simple structure of the long hole shape of length direction, just can in the situation that winding mechanism and tape spool 303 are not interfered, winding mechanism and tape spool 303 be linked reliably.

In addition, printer 100 according to the embodiment of the present invention, by only hole the 502A related link of a side body side frame 101A and band plate 110 being formed as to long hole shape, can be in the position that makes the band plate 110 state incision tape swapping plate 110 fixing with respect to the position of the opposing party's body side frame 101B.Thus, only by the simple structure that as fulcrum, band plate 110 is swung taking the coupling position linking with pair of side frames 101, the position that just can switch band plate 110.

Like this, printer 100 according to the embodiment of the present invention, by having suppressed the simple structure of parts number of packages and assembling increase in man-hour, the record position that the position that just can be positioned at band plate 110 is recorded desired separately color and printhead 103 is just right, and can prevent from making while using multiple color to print a series of information the situation of the color generation colour mixture outside expectation, thereby can realize the raising of the print quality of printer 100.

In addition, the printer 100 of embodiments of the present invention is characterised in that, tape spool 303 is arranged on the central authorities of the print range printing than printhead 103 by the position of a side body side frame 101A side.

Printer 100 according to the embodiment of the present invention, because the hole 502A that approaches the coupling position that winding mechanism and tape spool 303 link is formed as long hole shape, therefore, compared with the situation that is formed as long hole shape with the hole 502B away from coupling position, can reduce the size of the hole 502A (or recess) that is formed as long hole shape.Thus, can suppress owing to the hole 502A arranging on the body side frame 101A a side being formed as than the situation that the printer 100 of embodiments of the present invention is shaken with the large long hole shape of the chimeric projection of this hole 502A with respect to a side body side frame 101A the reduction of the print quality causing thereby the printer 100 that can prevent embodiments of the present invention shakes.

[industrial utilizability]

As described above, printer of the present invention is using ink ribbon useful in printing the printer of action, is particularly suitable for using the ink ribbon that can switch multiple color to print the printer of action.

Claims (2)

1. a printer, is characterized in that, possesses:

Printhead, its pair of frames by arranged opposite supports and carries out the printing of recording medium to move;

Impression member, it is supported by described pair of frames, and so that mode and the described printhead arranged opposite of the transport path of carrying described recording medium between itself and described printhead;

Tape drum, it possesses winding mechanism, and this winding mechanism is identical and remain along described length direction and extract out freely and reel freely along the different ink ribbon of width color by color alongst;

Box retaining member, itself and described pair of frames link respectively, be arranged to coupling position to link with described pair of frames and can swing as fulcrum, and under the state described ink ribbon being positioned between described printhead and described impression member, described tape drum is kept;

Tape spool, the described winding mechanism of itself and described tape drum links, and by described ink ribbon being extracted out and reeled around axle center being rotated; And

Switching mechanism, it is by swinging described box retaining member, switches the connecting state of described winding mechanism and described tape spool and the color of the described ink ribbon that the record position that records with described printhead is just right,

In the hole that described pair of frames and described box retaining member arrange by the either party in described pair of frames or described box retaining member or recess, the chimeric protuberance that has the opposing party in described pair of frames or described box retaining member to arrange is bonded,

The hole that the framework of a side in described pair of frames and the link of described box retaining member are related or recess present the long hole shape taking the opposed direction of described printhead and described impression member as length direction.

2. printer according to claim 1, is characterized in that,

Described tape spool is arranged on the central authorities of the print range printing than described printhead by the position of the frame side of one.