CN103112258B - Printer - Google Patents

Abstract

The present invention provides a kind of printer easily carrying out and safeguarding.nullThis printer possesses by paper guide part (30) (paper guide portion)、Pressboard (50) (paper-pressing part) and at least one black mark sensor (60) integration、The paper sheet delivery unit (90) that can load and unload relative to the basic framework (10) (printer main body) being fixed with printing portion (20)，Paper (200) is guided to the printing portion (20) with printhead (21) and platen (23) by described paper guide part (30) from the insert port (41) (insertion section) inserting paper (200)，Paper (200) is pressed on platen (23) by described pressboard (50)，Described black mark sensor (60) is detachably arranged in paper guide part (30)、In the part that mutually different multiple positions upper with the width of paper (200) (W) are corresponding.

Description

Printer

Technical field

The present invention relates to a kind of printer.

Background technology

In printer, in order to maintain the lettering quality to the paper between printhead and platen, need the distance (platen distance) setting between the front end of printhead and platen accurately, thus in such as impact dot-matrix printer, use amesdial etc. critically to adjust platen distance.

It addition, when paper is between print head and platen, need to be pressed tightly against on platen paper, in printer, therefore it is configured with the paper-pressing part (such as, patent documentation 1,2,3) being pressed on platen by paper.

Patent documentation

Patent documentation 1: Japanese Patent Publication 6-59961 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2-116576 publication

Patent documentation 3: Japanese Unexamined Patent Publication 5-85002 publication

But, the paper used in printer has all kinds, such as, at flexural rigidity (so-called deflection) aspect, there is also the paper etc. that the strong paper of rigidity, rigidity are weak.

The flexural rigidity of paper-pressing part needs stronger than the flexural rigidity of paper；Otherwise, paper can not be pressed on platen by paper-pressing part rightly, and paper is in the state (float state) left from platen, produces the problem that can not carry out the good printing of quality on paper.

Therefore, in order to tackle the flexural rigidity of the paper different because of the kind of paper, prepare the multiple paper-pressing part that flexural rigidity is mutually different, and therefrom select the paper-pressing part of the flexural rigidity being suitable for used paper to assemble.

But, this paper-pressing part is configured in the way of one front end connects with platen, therefore when changing this paper-pressing part, needs the major part of the inside by the casing of printer to disassemble.

When carrying out this and disassembling, it is also necessary to above-mentioned printhead, platen etc. are pulled down from casing.

Therefore, when the replacing operation carrying out paper-pressing part, in addition to the replacing operation of paper-pressing part, be also accompanied by the disassembling of the inside that comprises casing, platen distance the inside adjusting, comprising casing again the periphery operation such as reassemble, there is the problem expending man-hour in terms of maintenance.

Especially, the adjustment again of platen distance is the most critically carried out due to needs, so becoming big burden when safeguarding.

It addition, the problems referred to above not only produce when paper-pressing part is replaced by the paper-pressing part of other flexural rigidities, and damage because of long annual aging or maloperation at paper-pressing part, deformation etc. produces in the case of needing to change too.

And then, difference according to printer, also possesses the printer of sheet detecting apparatus, described sheet detecting apparatus is for detecting the optical indicia (so-called black labelling etc.) that each specific length of paper is i.e. formed on the ad-hoc location of the width of paper optically, and such sheet detecting apparatus is arranged on the ad-hoc location on the transport path of paper.

Here, owing to the position of the width of the paper being formed with black labelling is different, so the installation site of sheet detecting apparatus preferably also can move according to the kind of the paper that printer is used because of kind of paper etc..

But, sheet detecting apparatus to be made moves if as discussed above, then need to disassemble and be installed with around the part of sheet detecting apparatus, result is identical with situation during above-mentioned replacing paper-pressing part, also need to disassemble the periphery of printing portion or printing portion,, there is the problem expending man-hour in terms of maintenance in the disassembling of the inside being accompanied by comprising casing, the operation reassembled of the inside adjusting, comprising casing again of platen distance.

Summary of the invention

The present invention proposes in view of the foregoing, its object is to provide a kind of printer that can easily carry out and safeguarding.

The printer that the present invention relates to, at least paper guide part, paper-pressing part and sheet detecting apparatus is integrated as paper sheet delivery unit, this paper sheet delivery unit can load and unload from the printer main body being fixed with the printing portion comprising printhead and platen, therefore when pulling down paper sheet delivery unit on printer main body, the replacing etc. that can carry out paper-pressing part and sheet detecting apparatus is safeguarded without printhead and platen are produced impact, easily safeguards.

That is, the printer that the present invention relates to possesses: paper guide part, and paper is guided to the printing portion with printhead and platen by it from the insertion section inserting paper；Paper-pressing part, paper is pressed on platen by it；And at least one sheet detecting apparatus, it is detachably arranged in the part that multiple positions mutually different on the width with paper in paper guide part are corresponding, it is characterized in that, printing portion is fixed on printer main body, paper guide part, paper-pressing part and sheet detecting apparatus be integrated and formed can relative to printer main body handling paper sheet delivery unit.

According to the printer that the present invention relates to, it is possible to easily safeguard.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of the impact dot-matrix printer of an embodiment of printer being denoted as the present invention relates to.

Fig. 2 is to represent the axonometric chart that the arrow A from the printer shown in Fig. 1 observes.

Fig. 3 is the figure at the back side representing that the arrow B from the printer shown in Fig. 1 observes.

Fig. 4 is the figure representing and inserting guide part, and (a) represents main part, and (b) represents the shim adjusted for paper width being arranged on the shim installation portion being formed in main part.

Fig. 5 is the figure in the cross section representing the line C-C along the printer shown in Fig. 1.

Fig. 6 be represent pull down from printer insert guide part and paper guide part (paper sheet delivery unit) state afterwards disassemble axonometric chart.

Axonometric chart that Fig. 7 is the paper sheet delivery unit that comprises paper guide part, that be equivalent to Fig. 5.

Fig. 8 be paper sheet delivery unit disassemble axonometric chart.

(description of reference numerals)

10: basic framework (printer main body), 20: printing portion, 21: printhead, 23: platen,

30: paper guide part (paper guide portion), 40: insert guide part (insertion guide portion),

41: insert port, 50: pressboard (paper-pressing part), 60: black mark sensor (sheet detecting apparatus),

70: delivery section, 80: drive division, 90: paper sheet delivery unit, 100: impact dot-matrix printer,

200: paper, W: width.

Detailed description of the invention

Hereinafter, referring to the drawings the detailed description of the invention of the printer that the present invention relates to is illustrated.

Fig. 1 is that the impact dot-matrix printer 100(of an embodiment of printer being denoted as the present invention relates to is hreinafter referred to as printer 100) axonometric chart.This printer 100 is mainly embedded in such as cash register and automatic teller machine (ATM) etc. and uses.

Fig. 2 is the axonometric chart of printer 100 being in inverted status in the up/down and nearside/distally making Fig. 1.

This printer 100 possesses: constitute the framework 10(printer main body of overall skeleton)；It is arranged on printhead 21 and the platen 23 of the inside of this framework 10, described printhead 21 prints on the paper 200 becoming print object, and described platen 23 is configured in across the colour band 22a of ribbon cartridge 22 and paper 200 side contrary with printhead about 21 and is adjusted to and printhead 21 predetermined distance (printhead 21, ribbon cartridge 22 and platen 23 constitute printing portion 20) apart；Printhead drive division 80, it drives printhead 21 for the width W along paper 200；Inserting guide part 40, it is installed on framework 10, and is formed with the opening i.e. insert port 41(insertion section that paper 200 inserts inside)；Paper guide part 30(paper guide portion), paper 200 is guided to printing portion 20 by it from insert port 41；Delivery section 70, its paper 200 being directed to paper guide part 30 delivers to printing portion 20 from insert port 41；Pressboard 50(paper-pressing part), the paper 200 being sent to printing portion 20 is pressed on platen 23 by it；At least one black mark sensor 60(sheet detecting apparatus), it is detachably arranged in the part that multiple positions (such as four positions) mutually different on the width W with paper 200 in paper guide part 30 are corresponding；Paper edge sensor 65；And carry out the control device (omitting diagram) of various control.

At this, although printhead 21 and platen 23 are fixed on framework 10, but platen 23 can be made to illustrate vertical direction top offset, whereby by unclamping the screw (not shown) being fixed on framework 10 by platen 23, it is possible to adjust the interval between printhead 21 and platen 23.

It addition, after the adjustment, platen 23 is fixed on framework 10, becomes serviceable condition by tightening screw.

Printhead drive division 80 possesses: drive motor 81(with reference to Fig. 2)；Helical axis 82 and axis of guide 84(are with reference to Fig. 5), its supporting is equipped with bracket 24 the W extension in the width direction of printhead 21；And driving gear train 83, it is the combination of the gear that the rotary driving force driving motor 81 is transferred to helical axis 82.

By the not shown control controlling device, the mode driving motor 81 to switch between rotating and reverse carries out rotating driving.

Being formed with the groove helically extended centered by axle on the outer peripheral face of helical axis 82, projection 24a being formed on bracket 24 is entrenched in this groove.Therefore, pivoted by helical axis 82, be equipped with the bracket 24 of printhead 21 to the bearing of trend of helical axis 82 i.e. one of width W towards moving point-blank.When making helical axis 82 direction of rotation in the opposite direction, the bracket 24 being equipped with printhead 21 inversely moves.

Therefore, driving rotating and reverse of motor 81 by switching, switch the direction of rotation of helical axis 82, thus, the moving direction of the bracket 24 being equipped with printhead 21 is switched.

Additionally, the axis of guide 84 is passed through U-shaped part 24b on bracket 24, when by the rotation of helical axis 82, W moves bracket 24 in the width direction, bracket 24 can rotate around helical axis 82, and its posture therefore can be kept during the axis of guide 84 frame support bracket 24 not tilt.

Although ribbon cartridge 22 is fixed on framework 10 in the way of the colour band 22a that its inside is possessed is configured between printhead 21 and platen 23, but in order to make ribbon cartridge 22 be prone to handling when carrying out the replacing of necessity with appropriate frequency, it not to firmly fix tape cassette 22 with screw as printhead 21 and platen 23, but fix ribbon cartridge 22 by loose chimeric between the concave shape being formed on the surface of ribbon cartridge 22 and the convex form being formed on framework 10.

Delivery section 70 possesses the conveying motor 71 of paper sheet delivery, drives roller 72, as the rotary driving force of conveying motor 71 being transferred to drive the driving gear train 73 of the gear combination of roller 72 and following the dummy roll 74 of the action driving roller 72.By the conveying roller pair driving roller 72 and dummy roll 74 to constitute conveying paper 200.

Here, driving roller 72 is that the diagram lower surface with paper 200 contacts and applies the parts of the driving force carried to paper 200, and it is fixed on framework 10.

On the other hand, dummy roll 74 be configured to across paper 200 with and drive the surface i.e. upper surface of paper 200 of the contrary side of roller 72, and be configured to a part for paper sheet delivery unit 90 described later.

Generally use under state (paper sheet delivery unit 90 is arranged on the state on printer main body i.e. framework 10) at printer 100, paper 200 is clamped between driving roller 72 and dummy roll 74, apply paper 200, by the conveyance drive force driving roller 72 to produce, to carry paper 200.

Now, dummy roll 74 makes paper 200 be close to drive on roller 72, makes the driving force of driving roller 72 be transferred to paper 200, and driven along with the conveying of paper 200.

On the other hand, when the maintenance of printer 100 etc., under the state pull down paper sheet delivery unit 90 from framework 10, the roller 72 that drives being fixed on framework 10 leaves the paper 200 being removed together with paper sheet delivery unit 90, does not transmits driving force to paper 200.

Additionally, when paper sheet delivery unit 90 is arranged on framework 10, by rotating and reverse of switching conveying motor 71, switch the direction of rotation driving roller 72, thus, the conveying direction of paper 200 is switched by direction of advance F and rightabout i.e. Return-ing direction R thereof.

As it is shown in figure 5, omit in Fig. 3, Fig. 4, Fig. 5 by pulling down four screw 49(of four adjacent corner being tightened in the substantially rectangular portion inserting guide part 40), it is possible to make insertion guide part 40 slide along conveying Return-ing direction R and be pulled down.

Although as shown in Figure 6, inserting guide part 40 and be formed for the insert port 41 to the inside of printer 100 supply paper 200, but this insert port 41 is the elongated opening extended along diagram horizontal direction, its bearing of trend is corresponding with the width W of paper 200.

Inserting on guide part 40, on mutually different three position on the bearing of trend along insert port 41, be separately provided for install shim 42(separator) shim installation portion 43, this shim 42 limits the A/F of this insert port 41, and limits the paper 200 being inserted into insert port 41 according to the width of its paper 200.

These shims 42 are configured in the way of crossing over insert port 41, and are fixed with screw 48.In insert port 41, it is partially in, due to what shim 42 crossed over, the state of blocking, so the part being only clipped between two shims 42,42 plays a role as inserting the opening of paper 200.

At this, handling by screw 48, shim 42 can be installed relative to the main body inserting guide part 40 or pull down, such as on the shim installation portion 43 of the right-hand member shown in Fig. 4 (a) and the shim installation portion 43 of left end, it is respectively fixed with the shim 42 shown in Fig. 4 (b), 42(is relative to the shim installation portion 43 of right-hand member, the shim 42 of posture shown in Fig. 4 (b) is fixed with the state of contrary posture up and down), when from left end second shim installation portion 43 does not installs shim 42, by two shims 42 in insert port 41, Opening length between 42 is limited in such as 76～77mm, become the state of the paper 200 being adapted for use with 3 inches of (76.2mm) width.

On the other hand, when at the shim installation portion 43 of right-hand member and being respectively fixed with shim 42,42 on second shim installation portion 43 from left end, Opening length between two partitions 42,42 in insert port 41 is limited in the most substantially 58mm, becomes the state of the paper 200 being adapted for use with 57.5mm width.

Therefore, even the insertion guide part 40 that A/F is single, it also is able to the paper 200 of the most corresponding multiple width of the installation site according to shim 42, therefore different without being ready for insertion into the width of mouth 41 self multiple insertion guide parts 40, it is possible to reduce manufacturing cost.

Additionally, the switching of the width of the opening of insert port 41 is not limited to the change of the installation site by above-mentioned partition 42 and carries out, such as the width of opening can also be made whereby to change continuously or stepwise by changing, along gate that the bearing of trend of opening moves (preferably stretch to serpentine shape parts or can be around the parts linearly wound), the scope blocking opening.

Additionally, above-mentioned utilize the width that shim 42 carrys out switch openings in the case of, the quantity of shim installation portion 43 is not limited to above-mentioned three, it is also possible to be four or more.

Additionally, in the case of the ora terminalis regulation of the two ends cause opening self of insert port 41, due to without arranging shim 42 at the two ends of insert port 41, so in this fashion, in the case of corresponding with the paper 200 of multiple width, form one or more shim installation portions 43 between the ends.

Self-evident, in the case of the paper without corresponding with multiple width and the most corresponding single-width is sufficient for, it is not necessary to shim installation portion 43 to be set between the ends or other the gate etc. blocking opening is set.

Additionally, even if in the case of corresponding with multiple width, paper 200 for arbitrary width all makes paper 200 nestle up an end side of insert port 41 all the time to be inserted in insert port 41, thus, although the composition of the shim installation portion 43 of the width being formed without corresponding to paper 200 also can be obtained, but in the case, along with the progress of conveying of paper 200, it is possible to produce the danger that paper 200 moves ahead obliquely.

On the other hand, by making the A/F of insert port 41 be adapted to the width of paper 200, it is possible to prevent the diagonal of paper 200, be preferred version.

Paper guide part 30 is as shown in Figure 5, Figure 7, the upside guide plate 31 that possesses the upper surface side being arranged in paper 200, the downside guide plate 32 of the lower face side being arranged in paper 200 and be fixed on the installation frame 33 installing pressboard 50 of top of upside guide plate 31, and as shown in Figure 6, identically with insertion guide part 40, it is also possible to pull down along conveying Return-ing direction R relative to framework 10.

Here, each upper and lower guide plate 31,32 is the plate-shaped member to configure in the way of clamping paper 200 up and down, upside guide plate 31 guides paper 200 from upper surface side, and downside guide plate 32 guides paper 200 from lower surface side.

Additionally, as shown in Figure 8, at upside guide plate 31 with in the part corresponding with the black labelling formed on the assigned position along the width of the paper 200 guided of downside guide plate 32, it is respectively formed with four openings 31b, 31c, 31d, 31e of up/down perforation and four openings 32b, 32c, 32d, 32e.

These openings 31b, 31c, 31d, 31e and opening 32b, 32c, 32d, 32e are respectively the optical path that the black labelling to the paper 200 between upside guide plate 31 and downside guide plate 32 carries out the black mark sensor 60 of optical detection.

I.e., as shown in Figure 7 and Figure 8, on the upper surface of upside guide plate 31, by black mark sensor 60 downward in the way of arrange and be provided with the circuit substrate 61a and circuit substrate 61b of one or more black mark sensors 60, the black labelling formed on the surface (face of printing) of the paper 200 between upside guide plate 31 and downside guide plate 32, via opening 31b, 31c, 31d, 31e, is detected by the black mark sensor 60 of these circuit substrates 61a, 61b as the change of reflection light quantity.Black mark sensor 60 in this embodiment is reflective optical sensor i.e. reflective optical system.

In like manner, downside guide plate 32 lower surface by black mark sensor 60 upward in the way of arrange and be provided with the circuit substrate 61a and circuit substrate 61b of one or more black mark sensors 60, the black labelling formed on the back side (with the face of surface opposite side) of the paper 200 between upside guide plate 31 and downside guide plate 32, via opening 32b, 32c, 32d, 32e, is detected by the black mark sensor 60 of these circuit substrates 61a, 61b as the change of reflection light quantity.

It addition, be provided with a black mark sensor 60 on circuit substrate 61a, circuit substrate 61b can arrange most three black mark sensors 60.It addition, without all arranging black mark sensor on both circuit substrate 61a and circuit substrate 61b, it is also possible to black mark sensor is only set in them selectively on one.

That is, quantity is set, position etc. be set can the properly selecting according to the quantity of black labelling formed on the paper 200 used, position etc. of the black mark sensor 60 on each circuit substrate 61a, 61b.

In addition, in hypothesis uses the printer 100 of the paper 200 being formed with black labelling overleaf, it is set to be provided only on the circuit substrate 61a and/or circuit substrate 61b that are provided with black mark sensor 60 and is not arranged in the structure on the guide plate 31 of upside on the guide plate 32 of downside, it is possible to omit the equipment of unwanted black mark sensor 60；In contrast, in hypothesis uses the printer 100 of the paper 200 being formed with black labelling in table (just) face, it is set to be provided only on the circuit substrate 61a and/or circuit substrate 61b that are provided with black mark sensor 60 and is not arranged on the guide plate 32 of downside on the guide plate 31 of upside, it is possible to omit the equipment of unwanted black mark sensor 60.

The lower surface of the downside guide plate 32 of paper guide part 30 can also arrange paper edge sensor 65.

The paper edge sensor 65 being arranged on the lower surface of downside guide plate 32 possesses the detection lug of triangle, this detection lug is configured to, by being formed at the hole 32f on the guide plate 32 of downside, mode prominent on the path of paper 200 process between downside guide plate 32 and upside guide plate 31.

Additionally, the part opposite with hole 32f at upside guide plate 31, it is also formed with the hole 31f identical with hole 32f, is configured to from the upper portion of detection lug prominent for the hole 32f of downside guide plate 32, the mode highlighted from the upper surface of upside guide plate 31 via this hole 31f.

Detection lug utilizes used load on the direction that the elastic force of helical spring is prominent on the path to paper 200 process, but when there is paper 200 on the path, become the state that paper 200 overcomes the elastic force of helical spring to be pressed downwards by detection lug, and by using transmission-type optical sensor i.e. optical chopper (omitting diagram) to detect the change of this state, and it is capable of detecting when the existence of paper 200.

On the other hand, when there is not paper 200 on path, owing to there is not the load that detection lug is pressed downwards by the elastic force overcoming helical spring, so detection lug is on path prominent state, by using above-mentioned optical chopper to detect the change of this state, it is capable of detecting when not existing of paper 200, i.e. detects that the upstream end edge (paper edge) of conveying direction of advance F of paper 200 is through complete.

So, black mark sensor 60 detect the result of the black labelling of paper 200, detected the result etc. of the paper edge of paper 200 by paper edge sensor 65, can be used in driving the driving of motor 81 and conveying motor 71 to control.

Additionally, although the control etc. of the control of the above-mentioned driving driving motor 81, the printing carrying the control of driving of motor 71, printhead 21 is to utilize the control device (omitting diagram) being fixed on framework 10 to carry out, but this control device may not be the structure that printer 100 is possessed self.

I.e., it would however also be possible to employ equipped with the cash register of this printer 100, ATM etc. possessed in order to the function of this cash register, ATM etc. self controls control device carry out printer 100 drive motor 81 and conveying motor 71 drive the structure controlled.In the case of that construction, on printer 100, between the control device of this cash register, ATM etc., possesses the wired or wireless signal line (being then electric wire if wired, be then signal transmitting and receiving machine if wireless) for receiving and dispatching control signal.

The major part of the side (upstream side of conveying direction of advance F) from insert port 41 of upside guide plate 31 and downside guide plate 32, it is horizontally formed as shown in Figure 7, but in the part of upstream side of this conveying direction of advance F, the i.e. close part inserting guide part 40 side, flange part 31a, 32a that the face that is respectively formed with and insert guide part 40 is parallel, these flange parts 31a, 32a utilize screw 49 and insert guide part 40 and tighten together and be fixed on framework 10 (with reference to Fig. 6).

When pulling down above-mentioned screw 49 and release with framework 10 fixing, paper guide part 30 can carry Return-ing direction R relative to framework 10 rearward R() pull-out, and pull down from framework 10.

On the other hand, part near the end in upside guide plate 31 and downside guide plate 32, close conveying direction of advance F downstream, present the shape towards diagram inclined upward according to smooth surface.

Upside guide plate 31, at the end near zone of side downstream, rotatably supports dummy roll 74.

Near the end of downstream side of downside guide plate 32, the part opposite with dummy roll 74 in part is cut, when paper guide part 30 is arranged on the state on printer 10, as shown in figure 5 and figure 7, in the part that this is cut, contain the driving roller 72 being fixed on framework 10.

Its lower surface of paper 200 being configured to upside guide plate 31 and downside guide plate 32 from insert port 41 connects with driving roller 72, its upper surface connects with dummy roll 74, thus, this paper 200 is in by the state of two rollers 72,74 clamping, the rotation utilizing the forward (clockwise direction in Fig. 5) driving roller 72 drives, and paper 200 is carried along conveying direction of advance F.

The installation frame 33 of paper guide part 30, above upside guide plate 31, is configured to the mode extended substantially horizontally.

On this installation frame 33, different three position of width W is formed with pawl 33a, on the other hand, on the pressboard 50 being fixed on this installation frame 33, corresponding for pawl 33a three positions with this installation frame 33 is formed with rectangular opening 50a.

When the pawl 33a of installation frame 33 is inserted respectively in three hole 50a of pressboard 50, by making pressboard 50 move along conveying Return-ing direction R or making installation frame 33 move along conveying direction of advance F, and making the pawl 33a of installation frame 33 be stuck in the edge of each hole 50a of pressboard 50, pressboard 50 is fixed on installation frame 33.

Now, pressboard 50, as installation frame 33, is in the state extended substantially horizontally shown in Fig. 7.

Additionally, by making pressboard 50 move from the state being fixed on installation frame 33 along carrying direction of advance F or make installation frame 33 move along conveying Return-ing direction R, and make each pawl 33a of installation frame 33 depart from from the edge of each hole 50a of pressboard 50, it is possible to pressboard 50 is pulled down from installation frame 33.

When pressboard 50 is fixed on installation frame 33, when paper guide part 30 is arranged on the state on framework 10, as it is shown in figure 5, the end of the free end side contrary with the side being fixed on installation frame 33 for leading section 50c(of pressboard 50, the fore-end of conveying direction of advance F side) upstream part about printhead 21 of entering direction F before transporting connects with platen 23 from top.

What pressboard 50 contacted this platen 23 can be different because of the material of pressboard 50, thickness or shape etc. by pressure.

As it is shown in figure 5, for the paper 200 carried along conveying direction of advance F by upside guide plate 31, downside guide plate 32 and delivery section 70, pressboard 50 connects with it from the upper surface side of paper 200, and guides paper 200 to printing portion 20 with approximate horizontal posture.

Its result, utilize pressboard 50 to platen 23 by pressure, paper 200 is strongly pressed on platen 23, when paper 200 is printed by printhead 21, prevents paper 200 from floating from platen 23.

As mentioned above, by preparing the multiple pressboard 50 mutually different by pressure in advance, and it is suitable by the pressboard 50 of pressure to select the power (deflection) of the flexural rigidity according to the paper 200 used to be obtained in that from these pressboards, utilize the snap-action between above-mentioned pawl 33a and hole 50a, the pressboard 50 being arranged on installation frame 33 is replaced by selected pressboard 50, thus, in the case of the paper 200 using flexural rigidity to vary in size, also be able to use suitably correspond to this paper 200 flexural rigidity by the pressboard 50 of pressure, it is prevented from using unaccommodated by produced in the case of the pressboard 50 of pressure, the decline print quality caused such as floating because of the paper 200 in printing portion 20.

It is additionally, since pressboard 50 and installation frame 33 is integrated in the case of not using the secure components such as screw or fixed component, it is possible to carry out the replacing of pressboard 50 simply.

In the printer 100 of present embodiment, the paper sheet delivery unit 90 that paper guide part 30, pressboard 50, dummy roll 74, black mark sensor 60 and paper edge sensor 65 form as one.

Therefore, screw 49 is pulled down and time rearward R pulls out paper guide part 30 above-mentioned, not only paper guide part 30, and pressboard 50, dummy roll 74, black mark sensor 60 and paper edge sensor 65 also serve as paper sheet delivery unit 90 and are pulled out integratedly, and be removed from framework 10.

That is, paper sheet delivery unit can be the split state separated from the framework 10 being fixed with printing portion 20.

When the kind corresponding to paper 200 is changed pressboard 50, the position changing black mark sensor 60 or is replaced etc., the paper sheet delivery unit 90 being provided with these parts is pulled down from the framework 10 being provided with printing portion 20, in the range of the structure of this paper sheet delivery unit 90 pulled down, it is possible to carry out pressboard 50 and the replacing etc. of black mark sensor 60.

Therefore, when operations such as the replacings carrying out these pressboards 50 and black mark sensor 60, it is made without in conventional printer the operation disassembled that printing portion 20, printing portion 20 periphery must be graded, achieve and diminish the minimizing of the number of working processes brought because disassembling scope, adjusting again also without platen distance required in the case of disassembling printing portion 20, printing portion 20 peripheral part simultaneously, subtract reduced-maintenance time, it is possible to easily safeguard.

It addition, after replacing having carried out pressboard 50 and black mark sensor 60 etc., only by the paper sheet delivery unit 90 after these part integration is once again secured on framework 10, it becomes possible to paper sheet delivery unit 90 is assembled into the state before pulling down.

As it has been described above, according to the printer 100 of present embodiment, it is possible to easily safeguard.

Additionally, in the paper sheet delivery unit 90 of the printer 100 of present embodiment, the conveying motor 71 that do not comprises and be fixed on framework 10 or drive motor 81 mechanical linkage and powered structural element (driving roller 72 and helical axis 82 etc.), only comprise conveying roller centering rotates freely (when paper sheet delivery unit 90 is arranged on framework 10, rotate along with the conveying of paper 200) dummy roll 74, therefore without possessing in the case of comprising such structural element the interlinked mechanisms such as required gear.

That is, in needing the device of interlinked mechanism of gear etc., by in time being fixed with conveying motor 71 and drive the paper sheet delivery unit 90 pulled down on the framework 10 of motor 81 to be arranged on framework 10, connect (in the case of being the most all gear, connected by gear engagement each other) interlinked mechanism of paper sheet delivery unit 90 side and interlinked mechanism (the such as driving gear train 73 of framework 10 side, 83), now need to control the position relationship (for the phase relation of tooth in the case of being the most all gear) of two interlinked mechanisms, make gear each other as example tooth top will not interfere each other.

But, in the printer 100 of present embodiment, owing to need not interlinked mechanism, so also without controlling such position relationship, it is possible to realize simple structure.

It addition, the printer 100 of present embodiment is as it is shown in figure 5, the dust cover 11 being capped the surrounding of helical axis 82 covers.

This dust cover 11 together with helical axis 82 in the width direction W extend, especially, its cross section is shaped generally as C-shaped, in order to cover helical axis 82, towards paper guide part 30 and the side of printing portion 20.

This dust cover 11 prevents the paper powder produced from paper 200 because of bending and the friction of the paper 200 between paper guide part 30 and printing portion 20 from kicking up in the inside of printer 100 and being attached directly to helical axis 82.

In being not provided with the printer of structure of dust cover 11, owing to paper powder is attached on helical axis 82, so hindering printhead 21 W in the width direction smoothly to move, but the printer 100 of present embodiment is owing to being provided with dust cover 11, it is possible to the situation hindered when preventing printhead 21 W in the width direction mobile.

Additionally, in the case of on the outer surface that paper powder is attached to this dust cover 11, during the state that insertion guide part 40 and paper sheet delivery unit 90 are pulled down from framework 10, owing to can be immediately seen the surface in the outside of dust cover 11 by the space of installation paper sheet delivery unit 90 from the outside of framework 10, or cleaning brush etc. can be used to enter, it is possible to easily remove, with cleaning brush etc., the paper powder being attached on the outer surface of this dust cover 11, and discharge it the outside of framework 10.

Although present embodiment is impact dot-matrix printer, but the printer that the present invention relates to is not limited to the printer of which, as printing portion, it is also possible to be ink-jet printer, can also be thermo printer, and be not the printer that the printing type of printing portion is defined in ad hoc fashion.

Additionally, although the printer of present embodiment being illustrated as a example by being assemblied in the printer that cash register, ATM etc. above use, but the printer that the present invention relates to is not limited to the printer of which, it is also possible to, the printing equipment of split independent with cash register, ATM etc..

And then, although the ladder that the printer of present embodiment has above-below direction in local is poor, but its be have paper 200 when insert port 41 is inserted into printer 100 towards with paper 200 when printing portion 20 is discharged towards roughly the same, the printer of so-called straight line path transport path, paper sheet delivery unit 90 can load and unload from framework 10 along the conveying direction of this paper 200.

But, the printer that the present invention relates to, it is not limited to the printer of which, can also be have when being inserted into printer 100 towards the printer with the transport path towards the substantially L-shaped being substantially orthogonal when printing portion 20 is discharged, or have when being inserted into printer 100 towards substantially opposite with being oriented when printing portion 20 is discharged towards the printer of transport path of substantially U-shaped.

It addition, the handling direction of paper sheet delivery unit 90 is also not limited to the direction of the conveying direction along paper 200, it is also possible to be the printer loaded and unloaded along the direction (the width W of paper 200) orthogonal with the conveying direction of paper 200.

But, in the printer 100 of the structure of the direction of the conveying direction along paper 200 handling paper sheet delivery unit 90, paper sheet delivery unit 90 is being pulled down along the direction that paper 200 is carried towards insertion guide part 40 side from the state being arranged on framework 10, and the paper sheet delivery unit 90 this pulled down is when being arranged on framework 10, if paper sheet delivery unit 90 is advanced along the conveying direction of paper 200 towards printing portion 20 side, the most as shown in Figure 7, the leading section 50c of pressboard 50 is transitioned in inclined plane 23a of platen 23 while advancing, the situations such as pressboard 50 are damaged therefore, it is possible to avoid the leading section 50c of pressboard 50 to be stuck on platen 23, swimmingly paper sheet delivery unit 90 can be assemblied on framework 10.

Claims (5)

1. a printer, possesses:

Paper guide part, paper is guided to the printing portion with printhead and platen by it from the insertion section inserting paper；

Paper-pressing part, described paper is pressed on platen by it；And

At least one sheet detecting apparatus, in the part that its multiple positions mutually different with on the width of described paper being detachably arranged in described paper guide part are corresponding, described printer is characterised by,

Described printing portion is fixed on printer main body,

Described paper guide part, described paper-pressing part and described sheet detecting apparatus are integrated, and form the paper sheet delivery unit that can load and unload on described printer main body.

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

Described paper sheet delivery unit can be loaded and unloaded in the way of being removed along the direction that described paper is carried towards side, described insertion section under the state being arranged on described printer main body.

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

Described insertion section is the opening inserting described paper, and possessing the part blocking described opening to limit at least one shim of the width of described opening, described shim is the parts that can move in the range of described A/F or detachably be set.

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

Described insertion section is the opening inserting described paper, and possessing the part blocking described opening to limit at least one shim of the width of described opening, described shim is the parts that can move in the range of described A/F or detachably be set.

5. according to the printer according to any one of Claims 1 to 4, it is characterised in that be also equipped with:

Driving roller, it connects with a side surface of described paper and described paper applies the driving force of conveying；And

Dummy roll, it connects across the surface of the described paper side contrary with described driving roller,

Described dummy roll is provided integrally on described paper sheet delivery unit.