CN1229233C - Tape cartridge and printing device - Google Patents

Abstract

The present invention provides a novel structure of a tape cartridge accommodating a printing tape and an ink ribbon used for printing, which prevents the printing tape from being stuck in a cartridge case or the ink ribbon from being slackened. The tape cartridge of the invention has a mechanism for preventing an end of the tape from being reversely moved back into the cartridge case. A typical structure of the mechanism includes an anti-inversion system which prevents a tape core having a tape wound thereon from rotating in a reverse direction, that is, a direction opposite to a normal rotating direction for printing. The anti-inversion effects are removed when the tape cartridge is set in a printing device such as a tape writer to ensure smooth feeding of the tape for printing.

Description

Printing equipment and Method of printing

The present patent application be that October 13, application number in 1993 are 93114859.6 the applying date, denomination of invention divides an application for of the patent application of " tape and printing equipment ".

Technical field

The present invention relates to be used for accommodating the tape drum of long type belt, on this type belt, print the character that has some to need.The invention still further relates to the ribbon cartridge that is used for being housed within colour band used when printing, and printing equipment, this printing equipment is accommodating tape cassette and ribbon cartridge in the mode that can take out and some characters that need is being printed on the type belt.

Background technology

U.S. Pat 4,557,617 disclose a kind of type belt provides box, is used for type belt and colour band are offered typewriting apparatus, and this equipment has the mechanism that is used to form typewriting power and is used for the mechanism of character locating in the position that will typewrite.This box comprises an improved device, is used to make type belt to have and guarantees lead.This box also comprises and is used to prevent the mechanism that colour band feed spool and wheel come off mutually and be used for being connected so that the improved structure of type belt to be provided with typewriter.

Type belt is contained in the tape drum usually, and tape drum can take out and reload from letters that some are needed and symbol print to printing equipment on the type belt.This tape drum generally includes a mechanism, this mechanism is used for long type belt remained on the columniform belt carcass and with type belt and sends from belt carcass by desired quantity, lays long type belt effectively and carries type belt reposefully to printing equipment with this.

The printing equipment that has a this tape drum has a shut-off mechanism that will long type belt be cut into Len req.This shut-off mechanism is arranged on the place near the type belt outlet usually, so that can will be with cut-out on the position of any needs of long type belt by the element of handling handle and so on.

Some characters that need are printed to thin page or leaf or be to be contained in the ribbon cartridge with going up used colour band, ribbon cartridge also can take out from printing equipment and reload.This ribbon cartridge generally includes a mechanism, this mechanism is used for remaining on long colour band on the columniform colour band core and being wound up into a ribbon spool on core with the colour band of crossing, long colour band being installed compactly and being carried colour band reposefully to printing equipment with this.Colour band core and ribbon spool all are rotating around core, are located at by one that being used in the printing equipment drives the colour band core and ribbon spool rotates around the driving mechanism of core.Like this, tape drum itself is not equipped with driving mechanism, and this has just reduced the manufacturing cost of consumptive ribbon cartridge effectively.

When tape drum is not packed printing equipment into, because certain vibration or impact or belt carcass take place by mistake to rotate, band edge will be drawn in the housing of tape drum, the band edge that unexpectedly enters in the cassette housing is difficult to take out.

Although the housing of tape drum can be opened so that take out and be stuck in the belt of band in the shell, the band shell that will lay type belt and colour band is opened by force colour band is unclamped, even can make colour band leave original precalculated position, to such an extent as to damage whole tape drum.

Band edge has been withdrawn into the tape drum of band in the shell if unexpectedly be placed in the printing equipment, will damage printing equipment by pinch roller and printhead clamping and the type belt sent as if being stuck in the tape drum.

Printing equipment also another problem can occur, that is: the user is if use cutting mechanism when printing, and type belt just can not entirely be sent and can be stuck in the printing equipment.

Ribbon cartridge also has a problem: as mentioned above, the colour band core be by be located at printing equipment in the driving shaft of driving element be meshed and rotate.Colour band core in the printing equipment do not pack into regard to being easy to because of vibration and impacting and rotate, colour band is unclamped.Colour band unclamps and can damage the colour band driving mechanism in the printing equipment or print quality is descended.

Before tape drum is paid, a protective sheet or a protective element that stops the colour band core to rotate is injected in the colour band core individually.Perhaps, when the transporting and store of tape drum, adopt a kind of special band shell that prevents that colour band from unclamping.Yet all there is following problems in these methods.

In a kind of method, the manufacturing of tape drum and treatment step are all quite complicated before above-mentioned.Before tape drum used, the user should remove protective sheet.Just tape drum is not inserted printing equipment if the user removes protective sheet, will damage the colour band driving mechanism of printing equipment.

In a kind of method in back, for example, on the inner face of the special housing of ribbon cartridge, one or several engaged claw is set, engaged claw is meshed with the colour band core to stop the rotation of colour band core.This needs extra manufacturing and treatment step, and the cost of consumptive tape drum is increased.

In this class tape drum, colour band and type belt all are clamped between pinch roller and the printhead.When the user pulled out type belt under non-print state, along with the positive motion of type belt, colour band can together be drawn out tape drum along with type belt.

Summary of the invention

An object of the present invention is to prevent the type belt indentation and be stuck in the housing of tape drum the trouble that the printing equipment release is caused because of cassette tape.

Another object of the present invention is to prevent that effectively and reliably colour band from unclamping because of the unintentional rotation of the colour band core in the ribbon cartridge.

Another object of the present invention is to prevent that colour band from pulling out from tape drum with the positive motion of type belt.

Above-mentioned and other purpose of the present invention is achieved in that a kind of tape drum, comprise cassette housing, housing is used for laying along with the work of printing equipment is sent the band shell swimmingly for printing the long type belt that uses, also comprise a mechanism, this mechanism is used for preventing that the band edge of type belt oppositely is withdrawn in the band shell goes.

Tape drum of the present invention also comprises the belt carcass of the long type belt of reeling.Belt carcass comprises a non-return mechanism, with this as preventing that heterodromous mechanism from preventing that belt carcass from rotating along the direction opposite with the direction of feed of printing the duration type belt.Replace in the structure at one, belt carcass has bead, the inner surface toughness of bead so that with long type belt about at least one side in the both sides contact.

Be used for preventing that the type belt counter motion is withdrawn into non-return mechanism in the band shell and comprises a joggle piece on the outer surface that vertically is located at the belt carcass bead, also comprise a relative joggle piece of the joggle piece with belt carcass that is located on the band shell.In another structure, non-return mechanism comprises that is installed in the joggle piece of band on the shell, also comprise one be located on the belt carcass with the band shell on the relative joggle piece of joggle piece.

When tape drum was packed printing equipment into, the engagement between the joggle piece in the non-return mechanism on belt carcass and the band shell was disengaged.In a preferable structure, non-return mechanism allows belt carcass to rotate along the normal direction identical with the direction of feed of printing the duration type belt.

In another example of the present invention, tape drum comprises the tape drum shell not, and housing is used for laying the long type belt that is clamped between pinch roller and the printhead.Pinch roller is installed on the band shell.Be with shell to have and be roughly oval-shaped hole, be used for movably accommodating the axle of pinch roller, the band shell does not have fixation wall, and it is arranged on the direction of motion that movably is contained in the pinch roller in the above-mentioned hole, with this type belt is clamped between pinch roller and the fixation wall.In this structure, the longitudinal axis of elliptical aperture passes through the direction of feed of type belt.In the time of in type belt will move withdrawal band shell backward, the type belt that the motion of pinch roller has prevented to be clamped between pinch roller and the fixation wall is withdrawn in the band shell.

The band shell preferably includes the guiding piece of a predetermined length, and it is arranged near the type belt exit on the band shell and along the feeding route of type belt.

In another example of the present invention, tape drum comprises cassette housing, housing is used for laying long type belt and printing equipment when printing on type belt used long colour band.Tape drum comprise one will long ribbon spool around top cylindrical colour band core, also comprise one will be after printing equipment is printed with the ribbon spool of mistake around top columniform ribbon spool around core.Tape drum is contained in the printing equipment in the mode that can take out.When ribbon spool is on the colour band core, a joggle piece is arranged on the position of exposing of colour band core.Support the attaching means that has a joggle piece with the colour band core to be harmonious on the band shell of painted belt carcass rotationally, rotate to prevent the colour band core.

According to a kind of printing equipment of the present invention, the mode that is configured taking out is accommodating tape drum, this tape drum comprise a colour band of depositing ink ribbon on it deposit core and one be configured be used to deposit print the ink ribbon of using ribbon spool around core, and the type belt that is used with described ink ribbon, so that at least one character is printed on the type belt, described printing equipment comprises: a printhead, be provided with to such an extent that described at least one character is printed on the described type belt, and be used for matching with therebetween the adjacent grounded grip of described type belt with described ink ribbon with a pinch roller; Print synchronous drive mechanism for one, be provided with to such an extent that under print state, drive described type belt and described ink ribbon with synchronized relation, it is characterized in that, described printing equipment also comprises a non-printing synchronous drive mechanism, under the situation that described type belt is pulled out by force, it matches with described printing synchronous drive mechanism, makes described printing synchronous drive mechanism and described pinch roller remove coupling with a kind of described pinch roller and described ribbon spool of making around the mode that core carries out coiling action synchronously.

Printing equipment of the present invention comprises the tape drum bearing assembly, is used for laying the tape drum that type belt is equipped with in inside in the mode that can take out.Be contained in type belt in the tape drum in company with together feeding of colour band, to print.Printing equipment also comprises the driving shaft of pinch roller, and this driving shaft is meshed with pinch roller on being contained in tape drum and pinch roller is rotated, so that along with type belt is sent in the rotation of pinch roller driving shaft; The shut-off mechanism that also comprises type belt, this shut-off mechanism needs will be with on the position cut-out the type belt of sending along with the rotation of pinch roller driving shaft any from tape drum; Also comprise a detecting unit that when the pinch roller drive shaft turns, detects the shut-off mechanism action, and comprise a stop mechanism that when detecting unit detects the shut-off mechanism action, stops the pinch roller drive shaft turns.

In another example, printing equipment comprises the tape drum bearing assembly, is used for laying the tape drum that type belt and colour band core are housed in the mode that can take out, and ribbon spool is on the colour band core and be sent tape drum to print.When ribbon spool is on the colour band core, a joggle piece is arranged on the position of exposing of colour band core, an attaching means that is meshed with the joggle piece of colour band core is arranged on the tape drum.The tape drum bearing assembly of printing equipment comprises a vertical projection contactant, be used for contacting with attaching means on the tape drum, so that when tape drum installs on the tape drum supporting member, attaching means is moved along release direction, the meshing relation between the joggle piece of constraint relief spare and colour band core.

In another example of the present invention, printing equipment comprises the tape drum bearing assembly, be used for laying type belt and the ribbon spool tape drum around core is housed in the mode that can take out, the ribbon spool of using after the printing around ribbon spool on core.When the ribbon spool of using when ribbon spool is on core, ribbon spool has one second joggle piece on the position of exposing of core, tape drum has second attaching means that is meshed around second joggle piece of core with ribbon spool.The tape drum bearing assembly of printing equipment comprises second a vertical projection contactant, be used for contacting with second attaching means on the tape drum, so that when tape drum installs on the tape drum supporting member, second attaching means is moved along release direction, remove second attaching means and the ribbon spool meshing relation between second joggle piece of core.

In preferred construction of the present invention, printing equipment comprises the tape drum bearing assembly, be used for laying tape drum in the mode that can take out, the ribbon spool after accommodating the cylindrical colour band core that is wound with long colour band, printing equipment in the tape drum and printing is printed long type belt it on around core and with some characters that need with the China ink of colour band around the cylindrical ribbon spool on it.Printing equipment also comprises type belt and colour band is clamped in printhead between pinch roller and the printhead with adhering to, is used for feeding type belt and make the driver element that ribbon spool rotates synchronously around core and be included under the non-print state in the type belt feeding and make ribbon spool that ribbon spool rotates around core around the core driver element along with the pulling out motion of type belt.

The driver element of printing equipment preferably includes a stepper motor as drive source, first transmission mechanism of pinch roller is passed in the rotation of stepper motor and be included in that the precalculated position top set of first transmission mechanism comes out, second transmission mechanism of ribbon spool around core passed in the rotation of stepper motor.Ribbon spool preferably includes an one-way clutch mechanism between the predetermined branch point that is arranged in the stepper motor and first transmission mechanism around the driver element of core, with the rotation of blocking-up from pinch roller.

According to a kind of method of on the type belt of a tape drum, printing of being used for of the present invention, this tape drum is housed within the tape printing apparatus in the mode that can take out, described tape drum comprise a colour band of depositing ink ribbon on it deposit core and one be configured be used to deposit print the ink ribbon of using ribbon spool around core, described printing equipment comprises a printhead, it is provided with to such an extent that match with a pinch roller with the adjacent grounded grip with described ink ribbon of described type belt therebetween, so that at least one character is printed on the described type belt, described method comprises: during print state, drive described type belt and described ink ribbon by a driving mechanism with synchronized relation; And, during non-print state, pulling out by force under the mobile situation of described type belt, moving with the mobile phase of pulling out with described type belt of described ink ribbon so that making described drive unit remove with described pinch roller, the mode on the described coiling core of synchronously being wound on is coupled synchronously with a kind of.

According to a kind of method of on the type belt of a tape drum, printing of being used for of the present invention, this tape drum is housed within the tape printing apparatus in the mode that can take out, described tape drum comprise a colour band of depositing ink ribbon on it deposit core and one be configured be used to deposit print the ink ribbon of using ribbon spool around core, described printing equipment comprises a printhead, it is provided with to such an extent that match with a pinch roller with the adjacent grounded grip with described ink ribbon of described type belt therebetween, so that at least one character is printed on the described type belt, described method comprises: during print state, described pinch roller is coupled to a driving mechanism, so that drive described type belt and described ink ribbon with synchronized relation; And, during non-print state, pulling out by force under the mobile situation of described type belt, make the releasing coupling of described driving mechanism and described pinch roller so that described ink ribbon with described type belt pull out mobile phase synchronously so that the mode that synchronously is wound on the described coiling core moves.

Above-mentioned and other purpose, feature, mode and advantage of the present invention will become apparent by the detailed argumentation to the preferred embodiment that hereinafter has accompanying drawing.

Description of drawings

Fig. 1 is the vertical view of the type belt printing equipment of first embodiment of the invention.

Fig. 2 is the right view of the printing equipment of Fig. 1.

Fig. 3 is the vertical view of tape drum assembly 10 among first embodiment.

Fig. 4 is the bottom view of the tape drum 10 of Fig. 3.

Fig. 5 is the end-view along the tape drum 10 of V-V line among Fig. 3.

Fig. 6 is the end-view that tape drum 10 internal structures of the wide type belt of 6mm are equipped with in expression.

Fig. 7 is the end-view that tape drum 10 internal structures of the wide type belt of 24mm are equipped with in expression.

Fig. 8 has represented to be contained in width and three relations that detect between the hole 18 of the type belt T in the tape drum 10.

Fig. 9 is the end-view along the printing equipment 1 of IX-IX line among Fig. 1.

Figure 10 is the vertical view of tape drum bearing assembly 50A typical structure.

Figure 11 is gear drive and the perspective view that makes the travel mechanism that printhead 60 moves between the print position of going-back position.

Figure 12 is the end-view along the travel mechanism of the printhead 60 of XII-XII line among Figure 10.

Figure 13 is the end-view along the shut-off mechanism of XIII-XIII line among Figure 10.

Figure 14 is the block diagram of expression printing equipment 1 circuit structure.

Figure 15 represents the typical keyboard layout of input block 50C.

Figure 16 represents the formation of display unit 50D.

Figure 17 is the perspective view that prevents the another kind of mechanism of belt carcass 20 rotations.

Figure 18 is the sectional view of the tape drum 210 of second embodiment of the invention.

Figure 19 is that tape drum 210 is contained in the sectional view in the belt printer 1.

Figure 20 is the perspective view of the decomposition of tape drum 210.

Figure 21 is the perspective view of the basic part of belt carcass 202 among second embodiment.

Figure 22 has schematically shown the clutch that has some wedge-shaped slots in the another kind of tape drum.

Figure 23 has represented to have helical spring another kind of tape drum.

Figure 24 has represented to have the another kind of tape drum of clutch pawl.

The specific embodiment

By the description to following preferred embodiment of the present invention, it is clearer that 26S Proteasome Structure and Function of the present invention will become.

Fig. 1 is the vertical view of type belt printing equipment 1 of the present invention.Fig. 2 is the right part of flg of printing equipment 1.

In the argumentation below, the relative position relation of each part, for example left and right, upper and lower, all according to Fig. 1.

As depicted in figs. 1 and 2, printing equipment 1 comprises a housing 50H who is holding each part, the input block 50C of one 63 key, the lid 50K that can open easily, one sees through that the window 50M cover 50K can see, be used for showing the display unit 50D of a series of characters or other information needed, and one be located at printing equipment 1 upper left tape drum bearing assembly 50A (see figure 10), tape drum 10 is placed on this bearing assembly in the mode that can take out.Lid 50K is provided with one and is used for checking the window 50L whether tape drum 10 is housed.Two window 50L and 50M are covered by transparent plastic sheet.

The operating process of the printing equipment 1 of this structure is briefly described below: at first, the operator opens covers 50K, and tape drum 10 is installed on the tape drum bearing assembly 50A; Close after the loam cake 50K, the operator opens the power switch as shown in Figure 2 on the outer right wall that is located at apparatus main body; Device 1 is then carried out an internal processes, for the input of letter or symbol is prepared; The operator imports required some letters or symbol with the key of input block 50C then.Although the input of letter can directly realize by the key operation of input block 50C, in some language district that uses two symbols (for example Chinese symbol), just may need an additional program, change Chinese character into such as the letter that will import.After the operator provides print command by key operation, device 1 drives hot transfer printing print unit 50B, the type belt T that comes transmitting from tape drum 10 begins to print, and printing has the type belt T of letter or character to send from the type belt delivery outlet that is located on printing equipment 1 left side wall.

Employed type belt T has one deck and is convenient to the print surface that printing ink spreads by hot transfer printing and the back side of posting one deck peel ply of a viscosity through special disposal among this embodiment.When printed type belt T is cut into label by the blade of setting-in by Len req, to peel off after the peel ply, the label that is printed on character and symbol just can be attached to the place of any needs.

The 26S Proteasome Structure and Function of tape drum 10 is mainly described according to the bottom view of the vertical view of Fig. 3, Fig. 4 and along Fig. 5 sectional view of V-V line among Fig. 3.Similar each tape drum 10 of structure can accommodate the type belt of specific width.In the present embodiment, prepared the tape drum of 5 types for the type belt of width 6mm, 9mm, 12mm, 18mm, 24mm.Fig. 6 is the sectional view of broken section, has represented the internal structure of tape drum 10, and it comprises a type belt T that 6mm is wide, and type belt is crossed colour band core 22, the ribbon spool middle part around core and pinch roller 12 threes.Fig. 7 also is a sectional view, has represented to have the tape drum of 2mm type belt T.For the purpose of drawing is clear, omitted the numbers and symbols of representing each part respectively among Fig. 7.In Fig. 6 and Fig. 7, the part of printhead 60 is also illustrated in the sectional view of tape drum 10, to show the installation site of type belt T in printing equipment 1.

Pinch roller 12 is cylindrical components of a hollow, and it is coated with the corresponding pressure zone rubber 14 of width of one deck width and type belt T.Pressure zone rubber 14 has improved contacting between type belt T and colour band R, the printhead 60, is beneficial to print.In the present embodiment, use two kinds of wide pressure zone rubber of pressure zone rubber 14: 12mm to be used for the type belt (see figure 6) of 6mm, 9mm and 12mm; The wide pressure zone rubber of 18mm is used for the type belt (see figure 7) of 18mm and 2mm.

Pinch roller 12 has than the upper end of minor diameter with than the lower end of minor diameter, owing to be installed in rotationally respectively among the roof 16 of tape drum 10 and the hole 16A and 18A on the diapire 18 than the upper and lower end of minor diameter, pinch roller 12 can freely rotate.As seen in Figure 4, hole 16A and 18A are roughly ellipse.The hollow pinch roller 12 that is arranged in the tape drum 10 can packing into and take out to be installed on the pinch roller driving shaft that is arranged in the printing equipment 1 or from this driving shaft and unload down along with tape drum 10.(hereinafter will give description).As Fig. 4 and shown in Figure 6,6 engaging groove 12A along pinch roller pivot center direction that equidistantly arrange are arranged on the inner surface of pinch roller 12.Engaging groove 12A is meshed so that transmit the driving force of driving shaft with the pinch roller driving shaft.

Tape drum 10 also is provided with belt carcass 20, colour band core 22 and the ribbon spool of the long type belt T that reeling around core 24.Tape drum 10 also comprises the printhead accommodation hole 32 for printhead 60 turnover.This hole 32 is defined by guide wall 34.

Belt carcass 20 is large diameter cylindrical reels of a hollow, is used for long type belt T is wound on the larger-diameter comparatively speaking spool in the tape drum 10.Because total coiling thickness of type belt T is smaller for the diameter of belt carcass on the belt carcass, the angle of rotation speed belt (in Fig. 3, representing) of belt carcass 20 when the rotational angular velocity (representing with X in Fig. 3) of belt carcass 20 is substantially equal to same linear velocity pulling innermost layer type belt when with certain linear velocity outermost type belt being pulled away from belt carcass with β.Belt carcass 20 has fully big radius of curvature even the relatively poor type belt T of certain resistant to bending stresses ability also can be wound on the belt carcass 20 without difficulty.

As shown in Figure 3, belt carcass 20 has an axis hole 20B in certain central authorities, and this hole is holding an axle 18B who vertically stretches out from the diapire 18 of tape drum 10 rotationally, as seen in fig. 5.Belt carcass 20 is provided with the thin rounded flakes 20A on a pair of axial upper and lower end that abuts in belt carcass 20 respectively.Thin slice 20A has a viscous layer.The thin slice 20 that plays the bead effect with respect to type belt T is bonded on the thin slice 20A edge of type belt because the viscous layer of one deck towards type belt arranged slightly.Like this, when type belt is pulled out in pinch roller 12 rotations, make roll coil of strip maintenance reeling condition and order about belt carcass 20 rotations.

As shown in Figure 3, the type belt T that is placed on the belt carcass 20 that reeling moves towards pinch roller 12 from the type belt pilot pin 26 that vertically stretches out on the diapire 18 of tape drum 10 through one, leaves the type belt outlet 10A on the tape drum 10 then.Type belt outlet 10A has a guide 10B along the predetermined length of printing the direct of travel setting.When tape drum was contained among the tape drum supporting member 50A, printhead 60 was arranged in printhead accommodation hole 32.In this case, type belt T is clamped between printhead 60 and the pinch roller 12, and advances along with turning to of pinch roller 12.

As previously mentioned, the hole 16A and the 18A that hold pinch roller 12 upper and lower ends are oval-shaped, and in the time of in tape drum 10 is not packed printing equipment 1 into, pinch roller 12 can be along the longitudinal line of movement of hole 16A and 18A.When the type belt of tape drum outside is withdrawn in tape drum, pinch roller 12 moves along the direct of travel of type belt, the motion of pinch roller 12 makes the pressure zone rubber 14 on the pinch roller 12 contact with the periphery of pilot pin 26, and type belt T is clipped between pressure zone rubber 14 and the pilot pin 26 tightly.This has just stoped type belt further to bounce back.This structure has prevented that effectively type belt T is withdrawn in the tape drum mistakenly.

The winding process of colour band R is described now.As shown in Fig. 6 and Fig. 7, colour band core 22 comprises the cylindrical elements than minor diameter of a hollow, and it has the upper and lower end than minor diameter.The engaging groove that 6 conduct first joggle piece 22A that equidistantly arrange are arranged than the lower end of minor diameter as shown in Figure 3 and Figure 4.The lower end loose fit than minor diameter of colour band core 22 is installed among the circle first pilot hole 18C on tape drum 10 diapires 18.The upper end loose fit of the hollow of colour band core 22 is installed in the cylindrical direction protrusion 16C outstanding from tape drum 10 roofs 16.The colour band core 22 that is installed with so just can rotate along with pulling out of colour band R.

As shown in Figure 3 and Figure 4, be roughly the first L shaped attaching means 18D and be formed on the diapire 18 of tape drum 10, make they in colour band core and ribbon spool near both lower ends of core (description will be given in the back).The first attaching means 18D cuts (dash area of being represented by X among Fig. 3) that a part forms by the diapire 18 with tape drum 10.The elasticity of diapire material can be moved the free end of the attaching means 18D that wins around root 18E.Root 18E constitutes one with diapire 18 on the plane of diapire 18.If when not having active force to act on the first attaching means 18D to go up, its free end is positioned at the periphery of the first pilot hole 18C, and be installed in some being meshed among 6 joggle piece 22A on colour band core 22 lower ends among the pilot hole 18C with loose fit.These have prevented the unintentional rotation of colour band core 22 and unclamping of colour band effectively.

The colour band R that is installed on the colour band core 22 that reeling is drawn out through a colour band deflector roll 30; Run to ribbon spool on core 24 along guide wall 34.At ribbon path midway, colour band R arrives the position towards pinch roller 12, with type belt T overlaid.In Fig. 3, γ and δ represent two kinds of running statuses of colour band R respectively, be that tape drum 10 is new original, just the top of a color band R is wound on the state of ribbon spool on core 24 time, and whole colour band R is wound on the state of ribbon spool on core the time.

Ribbon spool comprises a cylindrical elements with the roughly the same hollow of Fig. 3 and colour band core 22 shapes shown in Figure 4 around core 24.The cylindrical elements of this hollow is homochromy belt carcass 22 equally has than minor diameter upper and lower end.There is the engaging groove of 6 conduct second joggle piece 24A that equidistantly arrange the lower end.The same with pinch roller 12, ribbon spool around core 24 by be located at printing equipment 1 in ribbon spool be meshed and rotate around core driving shaft (back will be described).Thereby ribbon spool has 6 engaging groove 24B around core 24, and these engaging grooves are arranged on the inner surface of hollow cylindrical element equally spacedly along the pivot center of ribbon spool around core 24.Ribbon spool is installed in respectively among the roof 16 of tape drum 10 and the circular pilot hole 16G and 18G on the diapire 18 rotationally movingly around the upper and lower end than minor diameter of core 24.

The mode of homochromy belt carcass 22 is the same, and for preventing ribbon spool around core 24 unintentional rotation, one is roughly the second L shaped attaching means 18H and is formed on the diapire 18 of tape drum 10.The second attaching means 18H cuts (dash area of representing with Y among Fig. 3) that a part forms by the diapire 18 with tape drum 10.In the time of in tape drum 10 is not packed printing equipment 1 into, the free end of the second attaching means 18H is positioned at the periphery of bottom pilot hole 18G, and be located at 6 the second joggle piece 24As of ribbon spool on core 24 lower ends in some being meshed.Therefore ribbon spool just can not be along the direction rotation that the colour band R that is wound on above it is unclamped around core 24.The first attaching means 18D and the residing respectively position of the second attaching means 18H are not perpendicular with the first and second joggle piece 22A, 24A, but tilt with them.As mentioned above, this has just prevented that colour band core 22 and ribbon spool from rotating along wrong direction around core 24.Ribbon spool rotates along the normal winding direction of colour band R easily around core 24.

In the time of in tape drum 10 is not packed printing equipment 1 into, being meshing with each other between the first joggle piece 22A of colour band core and the first attaching means 18D, and ribbon spool unclamps around second joggle piece 24A of core and the accident that has prevented colour band R effectively that is meshing with each other between the second attaching means 18H.Dispose procedure will be described in conjunction with the typical structure of tape drum bearing assembly 50A hereinafter.

Being wound on the colour band R of ribbon spool on core 24 is a kind of heat transfer colour ribbon, and the width of the type belt T that uses when its width and printing is corresponding.In the present embodiment, as shown in Figure 6, the wide colour band R of 12mm is used for the type belt T of 6mm, 9mm and 2mm; The wide colour band R of 18mm is used for the type belt T (not shown) of 18mm and the type belt T of 24mm, as shown in Figure 7.

(see figure 7) when the width of colour band R equals the height of tape drum 10, the roof 16 and the diapire 18 of tape drum 10 are guiding colour band R.On the periphery of core 24, just no longer need complementary bead to control and adjust the winding position of colour band R at ribbon spool.Yet when the width of colour band R during less than the height of tape drum 10, ribbon spool just is provided with bead 24C and comes guiding band R to make it pass through the print position of pinch roller 12 on the periphery of core 24.According to the width of colour band R, bead 24C is arranged to certain size.

The tape drum 10 that five kinds of different sizes are arranged corresponding to the width of type belt T in the present embodiment, as mentioned above.Owing to the print position of the type belt T width along with type belt T changes, this just needs multiple different installment state.Printing equipment 1 detects the size of tape drum 10 and automatically realizes needed installment state, has so just removed some trouble of installing from for the user.The tape drum 10 of present embodiment is provided with three size relevant detection hole 18Ka, 18Kb and 18Kc with type belt on its diapire 18, as shown in Figure 4.That is to say that three degree of depth that detect hole 18Ka, 18Kb, 18Kc change according to the width that is contained in the type belt T in the tape drum 10.

Fig. 8 has represented to be contained in the relation between the degree of depth that the width of the type belt T in the tape drum 10 and three detect hole 18Ka, 18Kb, 18Kc.As shown in Figure 8.Be equipped with that on the tape drum of 6mm type belt three detect hole 18Ka, 18Kb, 18Kc are shallow.When the wide type belt of 9mm was housed, it was dark having only first to detect hole 18Ka.When the wide type belt of 12mm was housed, second is detected hole 18Kb was dark.When the 18mm type belt was housed, the 3rd is detected hole 18Kc was dark.When the 24mm type belt was housed, first and second detection hole 18Ka, the 18Kb were dark.Because the size of tape drum 10 is represented as three combinations that detect hole 18Ka-18Kc different depth, the user just can with the naked eye check the size of tape drum.

The tape drum 10 of this structure is contained among the tape drum bearing assembly 50A of printing equipment 1.Printing equipment 1 comprises that one is used for the expanding element 50E, the input block 50C that optionally are connected as each assembly of exterior storage part and comprises a control circuit board 50F who is used for controlling display unit 50D and print unit 50B, as along shown in the sectional view of Fig. 9 of IX-IX line among Fig. 1.

Printing equipment 1 also is provided with battery compartment 501 on certain bottom surface, be used for holding 6 SUM-3 type batteries as the power source of whole device 1.Power switch 50J is installed in the right side of printing equipment 1 and surveys (see figure 2) on the wall.Power also can be by being located on the printing equipment right side wall, and the plug 50N (see figure 2) that can link to each other with AC converter (not shown) provides.

The frame for movement of printing equipment 1 is described below.Figure 10 is the vertical view of tape drum bearing assembly 50A typical structure.Figure 11 is a perspective view, has represented to drive with the power of stepper motor 80 basic structure of the driving mechanism 50P of pinch roller 12 and other element.

Tape drum bearing assembly 50A is arranged on the position, upper left side of the main body of printing equipment 1, and has determined a corresponding installing space of the shape with tape drum 10 as shown in figure 10.The hollow component on core 24 is meshed with pinch roller 12 and ribbon spool respectively around driving shaft for pinch roller driving shaft and ribbon spool, and simultaneously, as shown in figure 11, printhead 60 vertically is arranged in the assembly space of tape drum bearing assembly 50A.The bottom of tape drum bearing assembly 50A also is provided with driving mechanism 50P, is used for the rotation of stepper motor 80 is delivered on pinch roller and other element.The driving mechanism 50P that is located at tape drum bearing assembly 50A below also can't see when covering 50K opening.Driving mechanism 50P shown in Figure 11 is seen behind the inner casing that has removed tape drum bearing assembly 50A.When printing equipment 1 work, tape drum bearing assembly 50A is covered by lid 50K by the dress space.

Open when covering 50K, tape drum 10 just can be first or is installed to once more on the tape drum bearing assembly 50A.When slide in the right side of the slider 52 that is arranged on tape drum bearing assembly 50A front (seeing Fig. 1 and Figure 10) in figure, constraint between lid 50K and the printing equipment main body is disengaged, like this, lid 50K just rotates around the cancelling 54 that is installed in the printing equipment back body, and lid is opened.A spring arm 52A who forms one with slider 52 matches with an engaged element on the printing equipment main body, so that apply the pressure in a left side in figure continuously to slider 52.

Make when covering 50K and opening when handling slider 52, be used for the printhead 60 that the type belt T in the tape drum 10 prints is just retreated, so that the packing into and take out of tape drum 10.As clear expression among Figure 11, printhead 60 is installed in rotationally in the printhead rotating shaft 64 of stretching out on the base plate 61.The printhead body 65, one that printhead 60 comprises a some linear element with a series of heat supporting printhead body 65 by heat insulator 65a heat sink 65b, one supports the support 67 of heat sink 65b, a helical spring 66 and the soft cable as the electric wire that leads to type body 65 of printhead 60 being pressed to inceptive direction by connecting plate 67a.

Tape drum 10 is packed into after the printing equipment 1, and printhead 60 just generally aligns with pinch roller 12 in the tape drum.That is to say that when tape drum was contained in the printing equipment 1, printhead 60 was not always to contact with pressure zone rubber 14 equably along the height of pinch roller 12.In the printing equipment of present embodiment, by the pin 67b in the middle of the hole that is inserted into connecting plate 67a connecting plate 67a is fixed on the support 67, just can rotate so supporting the heat sink 65b of printhead body 65 around pin 67b.Like this, when printhead 60 is pressed to pinch roller 12, make printhead body 65 type belt T can be clamped between pinch roller 12 and the printhead body 65, and no matter with respect to the installation situation of tape drum bearing assembly 50A how tape drum 10 can make printhead body 65 contact with it equably on the pinch roller height.

The lower end of support 67 extends to form a connecting plate 62.Connecting plate 62 is arranged in gear train shown in Figure 11, and has one to be positioned near the free end (see figure 10) in display unit 50D edge.The free end of connecting plate 62 is connecting an end of helical spring 69, so that actuator 63 is linked to each other with connecting plate 62.As shown in figure 11, shape is roughly triangular-shaped drive part 63 first an end 63a who links to each other with the other end of spring 69, and position and lid 50K second opposed end 63b.The lid 50K relative with the second end 63b of actuator 63 extends a control arm 50S from the position, and presses to the second end 63b of actuator 63 when lid 50K closes.

Sectional view along Figure 12 of XII-XII line among Figure 10 has schematically shown above-mentioned moving.When lid 50K pressed down, control arm 50S pressed the second end 63b of actuator 63 downwards, so by right-hand the be rotationally connected plate 62 of helical spring 69 in Figure 11.This rotation of connecting plate 62 makes printhead overcome the pressure of helical spring 66 and rotates.Therefore printhead 60 turns to position in the face of the pinch roller the tape drum 12 from its going-back position.When lid 50K closed, printhead 60 moved on to its print position like this.Otherwise when lid 50K opened, printhead 60 moved on to going-back position, and tape drum 10 can be taken out or pack into.As lid 50K when opening, the printhead that has retreated is remained on the going-back position by helical spring 66, and when covering 50K and close, printhead is got back to print position so that push down pinch roller 12.

As previously mentioned, the first attaching means 18D and the second attaching means 18H are formed on the diapire 18 of tape drum 10, so that be meshed, prevent colour band core 22 and ribbon spool unintentional rotation (seeing Fig. 3 and Fig. 4) around core 24 with this with the first joggle piece 22A and the second joggle piece 24A.The first attaching means 18D and the second attaching means 18H are (being expressed as the dash area of X and Y among Fig. 3) that forms by certain part that cuts diapire 18 respectively.As shown in figure 10, tape drum bearing assembly 50A has two projection contactant 70A and 70B that roughly are positioned at the taper at dash area X, Y middle part.When tape drum 10 is put among the tape drum bearing assembly 50A, projection contactant 70A, 70B put in dash area X, the Y on the tape drum diapire 18, press the first and second attaching means 18D, 18H along the first joggle piece 22A and the ribbon spool that make the first and second attaching means 18K, 18H leave colour band core 22 respectively around the direction of the second joggle piece 25A of core 24.This pressing removed first, second attaching means 18D, 18H and colour band core 22, the constraint of ribbon spool between core 24, makes colour band core 22 and ribbon spool can rotate under the situation without any additional load around core.

The rotation of stepper motor 80 is delivered to transmission mechanism on the pinch roller driving shaft 72, and details are as follows: as shown in figure 11, first gear 81 is installed on the rotating shaft 80A of stepper motor 80, and a clutch arm 80B matches with rotating shaft 80A with certain frictional force.Clutch arm 80B constitutes an one-way clutch together with second gear 82 and the 3rd gear 83.When stepper motor 80 direction shown in the arrow C in Figure 11 was rotated, the frictional force between rotating shaft 80A and the clutch arm 80B made the clutch arm 80B that has second gear 82 along the rotation of the direction shown in the arrow C, is meshed with the 3rd gear 83.So the rotation of stepper motor 80 is passed to the 3rd gear 83.The function back of one-way clutch will be described.

The 3rd gear 83 rotates and then passes to the 5th gear 85 and the 6th gear 86 by the 4th gear 84 in the mode of two-stage gear reduction.The rotating shaft of the 5th gear 85 links to each other around core driving shaft 74 with ribbon spool, so that along with the rotation of the stepper motor 80 colour band R that reels.The actual ribbon spool that drives is enclosed within ribbon spool around the axle sleeve 74A of core 24 on core driving shaft 74 with certain frictional force.Under normal duty, axle sleeve 74A rotates around core driving shaft 74 together in company with the ribbon spool that is driven by stepper motor 80.On the other hand, when ribbon spool when core 24 is compeled stall, for example, when all having rolled up stall because of colour band R, the disengaging ribbon spool is around the rotation of core driving shaft 74 thereby axle sleeve 74A just skids.

The rotation of the 6th gear 86 further is delivered to the 7th gear 87, to rotate pinch roller driving shaft 72.Pinch roller driving shaft 72 has an axle sleeve 72A who is used for rotating pinch roller 12 who is meshed with the inner surface of pinch roller 12.Therefore, the rotation that passes to the stepper motor 80 of the 3rd gear 83 by one-way clutch finally makes pinch roller driving shaft 72 and ribbon spool rotate around core driving shaft 74.Like this, be clamped in pressure zone rubber 14 on the pinch roller periphery and the type belt T between the printhead body 65 just along with print procedure feeding continuously, colour band R then synchronously is wound on ribbon spool on core 24 with the feeding of type belt T.

Pinch roller driving shaft 72 has the engagement lug, nib 72B of three spaced sets on its outer surface, so that be meshed with engaging groove 12A on pinch roller 12 inner surfaces.Ribbon spool on the outer surface of core driving shaft 74, also have three spaced sets, be used for the engagement lug, nib 74B that is meshed around the lip-deep engaging groove 24B of in-core with ribbon spool.When pinch roller driving shaft 72 and ribbon spool when core driving shaft 74 rotates with a certain predetermined speed by stepper motor 80, the type belt T of certain-length and colour band R are pulled away from belt carcass 20 and colour band core 22 respectively, overlap the to each other to pass pressure zone rubber 14 and printhead 60.Meanwhile, the power supply that offers printhead 60 is being controlled the heating of some linear element on the printhead, and the last China ink with warmed-up some linear element corresponding position of colour band R is melted.The China ink that has melted is transferred on the type belt T by heat subsequently, with the printing on this type belt of finishing.After the printing, the type belt that has trace is sent from tape drum 10, then is wound on ribbon spool on core 24 with the colour band R that crosses.

Send the type belt T that sends along with the print procedure outlet of the type belt from printing equipment main body left side wall the at last 10A.The type belt T that has trace normally cuts off (back will be described) by shut-off mechanism.Yet before cutting off, the user may pull out type belt T by force.When closing, printhead 60 is pressed in type belt T on the pressure zone rubber 14 of pinch roller 12 at lid 50K, thereby pulls out type belt T by force pinch roller driving shaft 72 is rotated.Yet a certain amount of stop moment of torsion of gear reduction effect and stepper motor 80 will hinder the rotation around core driving shaft 74 of pinch roller driving shaft 72 in the conventional ADS driving mechanism and ribbon spool.Pulling out type belt by force can unexpectedly pull out colour band R.If use shut-off mechanism to cut off type belt T, will unexpectedly colour band together be cut off in this case, this can make tape drum 10 again can't use.

In the present embodiment, the one-way clutch that is made of clutch arm 80B, second gear 82 and the 3rd gear 83 has solved this problem when the user pulls out type belt T by force, and pinch roller driving shaft in the present embodiment structure 72 rotates together in company with pinch roller.The rotation of pinch roller driving shaft 72 is passed to the 3rd gear 83 through gear transmission chain, and the 3rd gear 83 is clockwise rotated.The rotation of the 3rd gear 83 is rotated second gear 82.Yet, because the turning cylinder 80A of stepper motor does not rotate, the rotary action power of the 3rd gear 83 just presses the clutch arm 80B that is supporting second gear 82, make the 3rd gear 83 and second gear 82 break away from engagement, this just causes the 3rd to the 7th gear 83-87 to break away from stepper motor 80, and ribbon spool can be rotated in company with the rotation of pinch roller driving shaft 72 because of the motion of pulling out of type belt T together around core driving shaft 74.Ribbon spool makes around the rotation of core driving shaft 74 and is wound up into ribbon spool when colour band R is pulling out type belt T on core 24.This has just prevented from unintentionally colour band R to be pulled out together in company with type belt T effectively.After stepper motor 80 began to rotate, clutch arm 80B shifted to the 3rd gear 83 again, made second gear 82 and 83 engagements of the 3rd gear.As shown in figure 11, because the free end of clutch arm 80B is installed among the opening 80C on the base plate 61, the motion of clutch arm 80B just is limited in the very little scope.Yet this range of movement is so that clutch arm 80B plays the effect of one-way clutch.

The printed type belt that leaves tape drum 10 to left movement is easy to be cut off by shut-off mechanism, and this has detailed expression in Fig. 1 and Figure 13.Figure 13 is the cross sectional view along the main expression shut-off mechanism of XIII-XIII line among Figure 10.The cutting knife bolster 92 that stretches out from the bottom surface of tape drum bearing assembly 50A supporting one be roughly L shaped can hinged support motion cut band cutter 90 and a spring 94.Shown in solid line among Figure 13, the elastic force of spring 94 makes to cut is with cutter 90 to be in a kind of like this state, and promptly clockwise rotary action power is applied to cuts on the band cutter 90.In this clockwise rotatory force effect, the left end 90A that cuts band cutter 90 upwards presses cutting knife button 96.The left end 90A that cuts band cutter 90 makes fork-shaped, to hold a pin 96A who is contained in cutting knife button 96 bottoms.Therefore, when pressing cutting knife button 96 downwards, the left end 90A that cuts band cutter 90 also moves down.

The right-hand member 90B that cuts band cutter 90 has a movable blade 98 that is used for cutting off type belt T, and it is arranged by predetermined angle, leaves fixed blade 91 1 segment distances that are contained on the tape drum bearing assembly 50A side.The crossette 93A of type belt fulcrum post 93 (see figure 10)s contacts with the rear surface of cutting band cutter 90 right-hand member 90B.As shown in figure 10, type belt fulcrum post 93 is pressed to the course of type belt T by spring 95.Rotate when cutting band cutter 90, when movable blade 98 was shifted to fixed blade 91, type belt fulcrum post 93 was also shifted to the course of type belt T.Pass the course of type belt T, in the fixation wall 97 in the opposite of type belt fulcrum post 93, before cutting off type belt T with movable blade 98 and fixed blade 91, type belt T is fixed between type belt fulcrum post 93 and the fixation wall 97.As will be described, the motion of type belt fulcrum post 93 is detected by a sense switch 99, prevents to print when cutting off type belt.

Type belt T cuts off by pressing the elastic force that cutting knife button 96 overcomes spring 94 downwards.Instantly crush-cutting cutter button 96 makes and cuts when being with cutter 90 to rotate counterclockwise (seeing Figure 13), and the movable blade 98 of cutting on the band cutter 90 right-hand member 90B also rotates counterclockwise.Type belt fulcrum post 93 and fixation wall 97 are clipped in type belt between the two tightly, and movable blade 98 is overlapping with fixed blade gradually, to cut off type belt T.

After describing the circuit structure of each unit that comprises control circuit board 50F briefly, will be described the details of input block 50C, display unit 50D and print unit 50B in the printing equipment 1.Control circuit board 50F is made of a printed circuit board, and it is installed in and abuts against among the print unit 50B that covers below the 50K.Figure 14 is the block diagram of the total circuit construction between each unit of schematic representation.The control circuit board 50F of printing equipment 1 comprises a single-chip microcomputer 110 (hereinafter being called CPU), it has read-only storage, random access memory, and input, output interface, the mask ROM 118 that is connected together with the above two and being used for is connected the various connecting circuits of CPU110 and input block 50C, display unit 50D, print unit 50B.CPU110 directly or by connecting circuit is connected with print unit 50B with input block 50C, display unit 50D, so that these unit are controlled.

Input block 50C has 48 character keys and 15 function keys, is 63 keys altogether, as shown in figure 15.Character keys is arranged according to JIS (Japanese Industrial Standards), constitutes so-called " full key board " structure.As traditional word processor, for avoiding the unnecessary increase of bond number amount, input block 50C has a known shift key.Function key can realize character input, editor and the every function when printing fast, thereby has strengthened the ability to work of printing equipment 1.

These character keys and function key are distributed to one 8 * 8 matrix.As shown in figure 14,16 input interface PAL-PA8, the PC1-PC8 of CPU are divided into several groups, and 63 keys of input block 50C just are arranged in the corresponding confluce of input interface.Power switch 50J is made of matrix element independently and interrupts NMI with the non-shielding of CPU and links to each other.When operating power switch 50J, CPU begins non-shielding to interrupt, to provide or to cut off the electricity supply.

Sense switch 55 is used for detecting the unlatching of covering 50K or cuts out, and the signal of exporting from sense switch 55 is input into interface PB5, so CPU interrupts covering with detection the keying situation of 50K.According to the motion that is located at the sense switch engagement projections 55L (seeing Figure 12) that covers the 50K end, sense switch 55 detects the motion of covering 50K, when detecting, sense switch 55 covers that 50K opens and printhead 60 when being driven, CPU demonstrates predetermined rub-out signal on the master apparent screen 50Da (seeing Figure 16) of display unit 50D, and cuts off the power supply that offers print unit 50B.

Interface PH, the PM of CPU is connected with a printhead rank detecting element 112 with PL, and this detecting element 112 is checked out the resistance value that printhead 60 is different by software.The resistance value of printhead 60 has significant difference according to the difference of manufacturing process, and is like this, also different for printing the predetermined desired power supply supply time of concentration of appearance.The resistance that printhead rank detecting element 112 is measured printheads 60 to be determining the rank of this printhead, and three inter-access piece 112A, 112B and the 112C of printhead rank detecting element 112 is set according to measurement result.CPU reads the state of printhead rank detecting element 112 then, so that revise the driving time of printhead 60 or add heat, this has just prevented the change of gradation of drop-out colour effectively.

Because print unit 50B carries out hot transfer printing to print, so gradation of drop-out colour also changes with temperature and driving voltage except the power supply supply time with thermal printer head 60 changes.Temperature sensing circuit 60A and voltage detecting circuit 60B are used for detected temperatures and driving voltage respectively.These circuit 60A and 60B integral installation in printhead 60 and with the binary channels analog-digital conversion input interface AD of CPU ₁And AD ₂Link to each other.CPU is by input interface AD ₁And AD ₂Data signal is imported and converted to read-out voltage, to revise the power supply supply time of printhead 60.

Be located at the identification switch (see figure 10) in the tape drum bearing assembly 50A lower right corner and the interface PB of CPU ₁-PB ₃Link to each other.Identification switch 102 comprises and is inserted on the tape drum 10 three three identification switch element 102A, 102B, 102C that detect among hole 18Ka, 10Kb, the 18Kc respectively.The degree of stretching out of tape drum identification switch element 102A, 102B, 102C is corresponding with each degree of depth that detects hole 18K on the tape drum diapire 18.When tape drum identification switch element 102 inserted among the shallow detection hole 18K, this identification switch element contacted with detection hole 18K and is pressed towards "open" state.On the other hand, when tape drum identification switch element 102 inserted among the dark detection hole 18K, this identification switch element 102 fitted loosely in and detects among the 18K of hole, keeps "off" state.According to three identification switch element 102A of identification switch 102, the different conditions of 102B, 102C, CPU determines the type that is contained in the tape drum 10 on the tape drum bearing assembly 50A, just determines the width of institute's dress type belt T in the tape drum 10.The information of expression bandwidth is used to determine the size of the character of being printed and is used for controlling print unit (back will be described).

The interface PB7 of CPU is used for accepting the activation signal from plug 50N.When inserting socket 115 and make plug 50N accept direct current from AC converter 113, cut off the power supply supply to power unit 114 by stopping to contact, to avoid consuming cells from battery BT.Simultaneously, import the input interface PN7 of CPU from the signal of plug 50N output.CPU reads this signal, still is to be provided by battery BT with definite power by AC converter 113, and carries out required control.In the present embodiment, when power is when being provided by AC converter 113, the print speed of print unit 50B is set to maximum.And on the other hand, when power is when being provided by battery BT, the print speed of print unit 50B just is lowered.With the energy that reduces to offer the current peak of printhead 60 and save battery BT.

The mask read-only reservoir 118 of 24 megabits is connected on the address bus and data/address bus of CPU, and it has stored 16 * 16 points, 24 * 24 points, and 48 * 48. 4 kinds of different fonts at 32 * 32.Except Chinese character and in corresponding country required other special character and outer symbol, mask ROM 118 has also been stored the character of some alphabetical types, for example elite, pica and courier.The output enabling signal OE of 24 address bus AD, 8 data/address bus, chip select signal CS, mask ROM 118 is connected to the interface PD of CPU ₀-PD ₃₃On.These signals also are input on the outside I/O connector 50Ea, so that the expanding element 50E that is installed on the outside I/O connector 50Ea can use mask ROM in an identical manner.

The expanding element 50E that can directly link to each other with control circuit board 50F is holding a read-only memory unit or the random memory unit that can select as the exterior storage element.Realize being electrically connected by making in the groove that read-only memory unit or random memory unit is inserted expanding element 50E between control circuit board 50F and the outside I/O connector 50Ea, like this, information is just transmitted between CPU and read-only memory unit or random memory unit.The read-only memory unit that is inserted among the expanding element 50E can be stored special character and the symbol that some are used for view, map, chemistry or mathematics institute, also can store the other Languages font of non-English or Japanese, with different character shape, for example boldface type and handwritten form are so that can edit required character.Perhaps, also can insert among the expanding element 50E information that can freely write by battery backed random memory unit.Compare with the storage capacity of the storage area at random of printing equipment inside, the random external memory cell can be stored more information, to set up the program library that character prints or to be used for carrying out information exchange with the printing equipment 1 of other type.

The data of the character point of reading from mask random access memory 118 or expanding element 50E also are input among the lcd controller 116A of display control circuit 116 except input CPU.

Be positioned at below the transparent part that covers 50K by the display unit 50D of CPU by display control circuit 116 control.So the user just can see display unit 50D through covering 50K, display unit 50D has two kinds of different electronics display formats on liquid crystal display, that is: one high * wide be 32 * 96 dot matrix display format and round 28 pentagon electronics display formats of dot matrix display format, as shown in figure 16.Dot matrix area is as the main display part 50Da that shows print What, and pentagonal regions is then as indicating section 50Db.

Main display part 50Da is a LCDs that can show 32 * 96 points (high * wide).In the present embodiment, because the input of character and editor have adopted the font of 16 * 16 points (high * wide), what show on the main part 50Da of showing is exactly to go in 6 characters * 2.Perhaps, when only using the font of alphabetical type, the main part 50Da that shows can show 4 row letters.According to edit routine, each character can be for showing or the flicker demonstration just as demonstration, reversed image.

Displaying contents on dot matrix master display part 50Da can be controlled as requested.For example, some keys are carried out the layout that input operation just can demonstrate print What afterwards.After the user provided the layout idsplay order, bandwidth table was shown the reversed image demonstration as shown in Figure 17, and a series of printable character is shown as white, and each point on the main here display part 50Da is being represented 4 * 4 points in printing.The total length of type belt shows with numeral as the side information of print What.When the layout of print What exceeds main display part 50Da, handle cursor key and just can see and check whole layout by horizontal or vertical rolling.

Indicating section 50Db round main display part 50Da has shown the various functions of being carried out by printing equipment 1.Representing the various functions and the state on the pentagon next door that is printed on display unit 50D with corresponding each display element t of the pentagon of indicating section 50Db.These functions and state comprise character input mode, for example " romaji " (Japanese of representing with roman character), perhaps " small letter "; The style of printing and editing, for example ' line number ' and ' crucial row frame '; And comprise layout, for example ' alignment ' or ' left side is heavy '.When selecting or carrying out a certain function or state, just bright with this function or the corresponding display element of state, to notify the user.

The print unit 50B of printing equipment 1 comprises as the printhead 60 of mechanical organ and stepper motor 80, also comprises the print control unit 120 and the motor actuator 122 that are used for controlling mechanical organ as component.As previously mentioned, printhead 60 is thermal printer heads, and it has 96 hot spots that form a line with 1/180 inch spacing, printhead inside also be provided be used for detected temperatures temperature sensing circuit 60A and be used for detecting the voltage detecting circuit 60B of supply voltage.By controlling a phase place in the 4 phase driven signals, stepper motor 80 is adjusted corner.According to the structure as the gear transmission chain of reduction gear, 80 per step of stepper motor amount of feeding of further pairing type belt T is set at 1/360 inch.When carrying out the every bit printing by printhead 60, stepper motor 80 receives the stepping turn signal in two steps.Therefore, print unit 50B is the printing pitch of 180 of per inch on the vertical and width of type belt.

As shown in figure 14, the sense switch 99 that is used for detecting the shut-off mechanism action is connected on the common wire of the signal connecting line between print control unit 120, motor actuator 122 and the CPU.When shut-off mechanism was driven in print procedure, sense switch 99 detected the action of shut-off mechanism and print unit 50B is stopped.Because signal is to mail to print control unit 120 and motor actuator 122 from CPU continuously, therefore, after the user stops using shut-off mechanism, prints and just can proceed.

In print procedure, handle the course feed that shut-off mechanism can influence type belt T.Therefore the sense switch 99 of present embodiment directly links to each other with the common wire of motor actuator 122, cuts off power by force with this, so that stop print procedure immediately, perhaps or rather, stops the feeding of type belt immediately.Replace in the structure at one, the output signal of sense switch 99 can be input into CPU, when lid 50K opens out of turn, according to software print unit 50B is stopped.Sense switch 99 can replace with a frame for movement, and this frame for movement presses clutch arm 80B according to the action of movable blade 98, prevents from the rotation of stepper motor 80 is delivered to pinch roller driving shaft 72.

Tape printing apparatus 1 also comprises a power unit 114, and having comprised in this unit by battery BT provides the use integrated package of 5V electricity and stable support or the logic circuit that transformer is set up by resistance-capacitance coupling mode (RCC).CPU also comprises the interface PB4 that is used for the voltage adjustment.

The tape drum 10 of this structure is not in it packs printing equipment into the time, and belt carcass 20 is pressed on the diapire 18 by a packing ring 23 and can not rotates (see figure 3).The prevention rotational structure of belt carcass 20 has prevented that effectively type belt T's is loose.The a pair of thin rounded flakes 20A that is attached to belt carcass 20 upper and lower sides has towards the viscous layer of type belt T.Thereby the upper and lower side of type belt T is bonded on the thin slice 20A reliably.

As previously mentioned, pinch roller 12 movably is contained among slotted eye 16A, the 18A on diapire 18 and the roof 16.When the user attempted to get back into the type belt of pulling out tape drum in the tape drum, pinch roller 112 was clamped (see figure 3) between pinch roller 12 and pilot pin 26 towards 26 motions of type belt pilot pin with type belt.So just stoped type belt further to move, prevented from effectively type belt T is got back in the tape drum 10 by force.

Near the induction element 10B that is arranged on the outlet of type belt on the tape drum 10A has guaranteed that the type belt T that is clipped between printhead 60 and the pinch roller 12 can go forward one by one reposefully.Even also can guarantee to go forward one by one reposefully when indentation row seal is taken mouthful 10A out of slightly when the band edge of type belt.

If user's desire is used and to be cut band cutter 90 in print procedure, sense switch 99 detected the action of cutting band cutter 90 before the cutting type belt, so that stop the rotation of stepper motor 80 immediately and to the power supply of printhead body 65.Therefore, cutting band cutter 90 can not use in the printing feeding process of type belt.This has just prevented that type belt is stuck in the secondary box 10 effectively, thereby has improved the serviceability of printing equipment 1, has reduced required maintenance load.

In this embodiment, packing ring 23 is pressed on the diapire 18 belt carcass 20 to prevent that belt carcass 20 from rotating.Yet, also can use another kind of structure to prevent the rotation of belt carcass.For example, as shown in figure 17, the thin slice 20A that is attached to belt carcass 20 upper and lower ends has some ratchet 20C, have only when belt carcass 20 when the course feed direction of type belt T is rotated, these ratchets can match with some the thrust 16D on the inner surface of tape drum roof 16.This structure has prevented effectively that also belt carcass 20 from rotating along the opposite way round that type belt is unclamped.These ratchets or other non-return rotation structure also can be arranged on the lower end of belt carcass 20, rather than upper end shown in Figure 17.

The type belt T that is contained in the tape drum 10 also can be the long type belt of folding up, rather than the foregoing type belt that is wound on the belt carcass 20.

In the time of in tape drum 10 is not packed printing equipment 1 into, the first joggle piece 22A of colour band core 22 is meshed with the first attaching means 18D on the tape drum degree wall 18, rotates (seeing Fig. 3 and Fig. 4) to prevent colour band core 22.Equally, ribbon spool is meshed with the second attaching means 18H on the diapire 18 around the second joggle piece 24A of core 25, rotates around core 24 to prevent ribbon spool.This structure does not need to be provided with for tape drum 10 elements such as protective sheet or special band shell just can be had prevent that colour band from unclamping in the transportation of tape drum.Do not use protective element that tape drum 10 is removed from because of not removing error or the trouble that those protective elements cause.When tape drum 10 is packed printing equipment 1 into, by the projection contactant 70A of taper and the effect of 70B, the engagement between the first joggle piece 22A and the first attaching means 18D, and the engagement between the second joggle piece 24A and the second attaching means 18H will automatically terminate.

In the time of in tape drum 10 is not packed printing equipment into, the edge of the first attaching means 18D and the second attaching means 18H is respectively obliquely towards the first joggle piece 22A and the second joggle piece 24A, so that colour band can move along normal direction, promptly move along the direction that colour band is unclamped.Even the engagement between the first joggle piece 22A and the first attaching means 18D, the perhaps engagement between the second joggle piece 24A and the second attaching means 18H, because the wearing and tearing of the projection contactant 70A of taper or 70B or fracture, or since tape drum 10 in printing equipment 1, install improper, thereby fail to remove fully, according to above-mentioned structure, the coiling of colour band R still can normally carry out.

When the tape drum 10 that is used for printing by when tape drum bearing assembly 50A takes off, the first attaching means 18D and the second attaching means 18H respectively with colour band core 22 on the first joggle piece 22A and the second joggle piece 24A of ribbon spool on core 24 mesh again, preventing that colour band core 22 and ribbon spool from rotating around core 24, thereby prevented that colour band from unclamping unexpectedly.The tape drum 10 that uses owing to often need to begin and still can continue to use takes out from printing equipment 1, changes other tape drum of another width, and therefore, colour band core 22 and ribbon spool are very useful around the above-mentioned anti-loose structure of core 24.

As previously mentioned, be after convenient tape drum 10 takes off from tape drum bearing assembly 50A, the edge of the first attaching means 18D and the second attaching means 18H is also respectively obliquely towards the first joggle piece 22A and the second joggle piece 24A, so that colour band core 22 and ribbon spool can be along reducing the direction rotation that colour band unclamps around core 24.Like this, the user just can come rotational tape wrapping core with a screwdriver, makes the colour band R rolling-in again of unclamping.

In the printing equipment of present embodiment, when the user pulled out colour band by force, the clutch wall 80B among Figure 11 rotated counterclockwise, to remove the meshing relation that second, third nibbles wheel.This makes pinch roller 12 break away from the active force of stepper motor 80.So the driving shaft 72 of pinch roller and ribbon spool rotate along with the pulling out motion of type belt T around the driving shaft 74 of core, to prevent that colour band from unclamping or to be drawn out tape drum 10 because of the pulling by force of type belt.

Although the tape drum of present embodiment 10 has accommodated colour band R and type belt T, also can make tape drum that only accommodates type belt T and the tape drum that only accommodates colour band R respectively.

Structure of the present invention can be widely used in the printing equipment of various use colour bands, for example, can be applicable to be contained in heat transfer colour ribbon ribbon cartridge, use the word processor of ribbon cartridge or be applied to use the click printer of colour band.

The second embodiment of the present invention is described below.The tape drum 210 of second embodiment schematically shows in Figure 18-Figure 21.This tape drum 210 is contained in the printing equipment 1 of first embodiment in the mode that can take out.

With Figure 18-shown in Figure 21, tape drum 210 has a cassette housing 201 that is made of upper casing 201a and lower casing 201b, has wherein accommodated the various elements that comprise belt carcass 202 and colour band core 207.The type belt 203 of reeling on the belt carcass 202, belt carcass is enclosed within on the jut 201c of drain pan 201b.

The support holes 202b of belt carcass 202 is equipped with a non-return spring 204, and an end 204a of spring puts among the key point 201d of drain pan jut 201c.Tape drum 210 is also accommodating one and is accepting printing equipment (not shown) driving force and be used for type belt 203 is sent the pinch roller 205 of tape drum, in print procedure, this pinch roller bears the pressure of printhead (not shown), tape drum also accommodating one be used for reeling print the colour band of using ribbon spool around core 206.Tape drum 210 is contained on the tape drum bearing assembly 208 of printing equipment or belt printer (not shown).The position of tape drum 210 is determined by the jut 201c of drain pan 201b and the locator protrusions 208a that is located on the tape drum bearing assembly 208.

The tape drum of second embodiment has following structure and prevents that the band edge of type belt 203 oppositely is withdrawn in the band shell 201.As clearly shown in Figure 21, belt carcass 202 has a ratchet 202a along support holes 202b.One end 204a of non-return spring 204 matches with ratchet 202a, rotates along the direction shown in the arrow B to stop belt carcass 202.Ratchet 202a has some teeth along a direction as shown in figure 21, makes belt carcass 202 can upwards compress spring 204 and freely rotates along the direction shown in the arrow A.The ratchet mechanism that this of belt carcass 202 matches with an end 204a of non-return spring 204 can only rotate belt carcass 202 along the A direction, and this has just prevented that the band edge of type belt 203 oppositely is withdrawn in the band shell 201.One end 204a of non-return spring 204 injects among the 201d that cracks of tape drum drain pan 201b upper process part 201c, and this has just prevented that non-return spring 204 from rotating together in company with belt carcass 202 effectively.

The tape drum 210 of second embodiment comprises that is also guaranteed the not counter-rotational supplementary structure of belt carcass 202.

As in Figure 18 and 19 clear being seen, tape drum bearing assembly 208 has a locator protrusions 208a.When tape drum 210 was contained on the tape drum bearing assembly 208, the effect of this positioning convex 208a was upwards to boost non-return spring 204, removed an end 204a of non-return spring 204 and the engagement between the ratchet 202a, and this makes belt carcass 202 freely to rotate.The printing equipment 200 if tape drum 210 is not packed into, in the transportation of tape drum or owing to fall unexpectedly, tedious backward rotation will take place in type belt 203.When installing on the tape drum bearing assembly 208, tape drum 210 removes the engagement between spring 204 and the ratchet 202a, required driving force in the time of just can reducing the type belt feeding valuably, and reduce to act on torque load on the pinch roller drive motors (not shown).

Although use helical spring in a second embodiment as non-return spring 204, also can use the spring of other type, for example the sheet spring perhaps uses other element with same effect to replace helical spring.

Now the third embodiment of the present invention is described according to Figure 22.The structure of the 3rd embodiment comprises some clutching members 269, these clutching members be arranged in belt carcass 262 and the band shell vertical axis 261 on the belt carcass guide surface between.Three groove 261a along the shaft extension exhibition are arranged on the outer surface of vertical axis 261.When belt carcass 262 was enclosed within on the axle 261, three clutching members 269 were arranged in by three groove 261a and the determined space of belt carcass inner surface.As clearly shown in Figure 22, the determined space of each groove 261a by axle 261 is a wedge shape on the circumferential direction of belt carcass 262, when belt carcass 262 when the direction shown in the arrow A is rotated, clutching member 269 does not enter in the wedge shape space, allows belt carcass 262 freely to rotate.And when belt carcass when the direction shown in the arrow B is rotated, clutching member 269 moves on in the wedge shape space to stop the rotation of belt carcass 262.

Now the fourth embodiment of the present invention is described according to Figure 23.The structure of the 4th embodiment comprises the clutch configuration that another kind can only rotate belt carcass 272 along direction.As shown in figure 23, the belt carcass 272 here has a helical spring 279 that is enclosed within on the vertical axis 271 of being with shell.One end 279a of helical spring 279 matches with the groove 272a on the belt carcass 272.The internal diameter of helical spring 279 is slightly greater than the external diameter of axle 271, thereby can be enclosed within on the axle 271 with certain clearance.When belt carcass 272 when the direction shown in the arrow A is rotated, the expansion of the internal diameter of helical spring 279 allows belt carcass 272 freely to rotate.And when belt carcass 272 rotated in opposite direction, the internal diameter of helical spring 279 retraction was embraced axle 291, stoped belt carcass 272 to rotate with this.

Now the fifth embodiment of the present invention is described according to Figure 24.The structure of the 5th embodiment comprises a pair of lock pawl 281a that being used on band shell 281 bottom surfaces is meshed with a pair of groove 282a of belt carcass 282 that is located at.Lock pawl 281a and groove 282a or one of them have the surface that tilts towards a certain direction, constitute the Geneva mechanism that belt carcass 282 can only be rotated along a direction with this.In the embodiment of Figure 24, each lock pawl 281a has the surface of inclination.

Tape drum structure among above-mentioned each embodiment can both prevent effectively that type belt oppositely is withdrawn in the band shell.This just can simplify storage and the management work of putting into the tape drum in the printing equipment in the mode that can take out.

Under the prerequisite of scope that does not break away from essential characteristic of the present invention or spirit, many other variation, modification and replacement forms can also be arranged.Therefore can be expressly understood that above-mentioned these embodiment are used for explanation rather than restrictive.The spirit and scope of the present invention are only limited by appending claims.

Claims (20)

1. printing equipment, the mode that is configured taking out is accommodating tape drum, this tape drum comprise a colour band of depositing ink ribbon on it deposit core and one be configured be used to deposit print the ink ribbon of using ribbon spool around core, and the type belt that is used with described ink ribbon, so that at least one character is printed on the type belt, described printing equipment comprises:

A printhead is provided with to such an extent that described at least one character is printed on the described type belt, and is used for matching with the adjacent grounded grip with described ink ribbon of described type belt therebetween with a pinch roller;

Print synchronous drive mechanism for one, be provided with to such an extent that under print state, drive described type belt and described ink ribbon with synchronized relation,

It is characterized in that, described printing equipment also comprises a non-printing synchronous drive mechanism, under the situation that described type belt is pulled out by force, it matches with described printing synchronous drive mechanism, makes described printing synchronous drive mechanism and described pinch roller remove coupling with a kind of described pinch roller and described ribbon spool of making around the mode that core carries out coiling action synchronously.

2. printing equipment as claimed in claim 1 is characterized in that,

Described printing synchronous drive mechanism comprises a stepper motor, is used to increase the motion of the described pinch roller of ground stepper drive.

3. printing equipment as claimed in claim 2 is characterized in that,

Described printing synchronous drive mechanism also comprises one first transmission mechanism, is provided with to such an extent that be used for the rotation of described stepper motor is delivered to described pinch roller.

4. printing equipment as claimed in claim 3 is characterized in that,

Described printing synchronous drive mechanism also comprises one second transmission mechanism, is provided with to such an extent that be used for the rotation of described stepper motor is delivered to described ribbon spool around core.

5. printing equipment as claimed in claim 4 is characterized in that,

Described second transmission mechanism described first transmission mechanism that synchronously is coupled is used for driving described type belt and described ink ribbon with described synchronized relation under print state.

6. printing equipment as claimed in claim 5 is characterized in that,

Described first transmission mechanism comprises one first gear train, and

Described second transmission mechanism comprises second gear train that can be coupled drivingly with described first gear train.

7. printing equipment as claimed in claim 5 is characterized in that,

Described printing synchronous drive mechanism also comprises a clutch combination, and it is arranged between described stepper motor and described first transmission mechanism, is used for releasing turning up the soil described first transmission mechanism is coupled to described stepper motor.

8. printing equipment as claimed in claim 7 is characterized in that,

The combination of described clutch comprises the 3rd transmission mechanism that can move between a position of engagement and disengaging configuration, when described stepper motor starts for its rotation, the described position of engagement can be meshed described stepper motor drivingly with described first transmission mechanism, and the described ink ribbon of described pulling produced move during, described disengaging configuration is separated described first transmission mechanism and described stepper motor.

9. printing equipment as claimed in claim 8 is characterized in that,

Described clutch combination also comprises a clutch arm, one end of this arm pivotally is coupled with a power transmission shaft with a predetermined frictional force, make that during starts described clutch arm forces described the 3rd transmission mechanism to move to the described position of engagement at described stepper motor.

10. printing equipment as claimed in claim 1 is characterized in that,

When described tape drum was received in the described printing equipment, described ink ribbon extended along one in the described tape drum predetermined path, and extended at least in part around described printhead.

11. printing equipment as claimed in claim 10 is characterized in that,

Described printhead pivotally is installed to described printing equipment between a contactless state and a contact condition, force described ink ribbon and described type belt and described pinch roller adjacent.

12. one kind is used for the method printed on the type belt of a tape drum, this tape drum is housed within the tape printing apparatus in the mode that can take out, described tape drum comprise a colour band of depositing ink ribbon on it deposit core and one be configured be used to deposit print the ink ribbon of using ribbon spool around core, described printing equipment comprises a printhead, it is provided with to such an extent that match with a pinch roller with the adjacent grounded grip with described ink ribbon of described type belt therebetween, so that at least one character is printed on the described type belt, described method comprises:

During print state, drive described type belt and described ink ribbon with synchronized relation by a driving mechanism; And

During non-print state, pulling out by force under the mobile situation of described type belt, moving with the mobile phase of pulling out with described type belt of described ink ribbon so that making described drive unit remove with described pinch roller, the mode on the described coiling core of synchronously being wound on is coupled synchronously with a kind of.

13. method as claimed in claim 12 is characterized in that,

Described printhead is moved to a contact position from a non-contacting position, and described non-contacting position is extensible and accommodate described tape drum, and described contact position matches with described pinch roller with the adjacent grounded grip with described ink ribbon of described type belt therebetween.

14. method as claimed in claim 13 is characterized in that,

Described driving comprises that increasing ground by a stepper motor rotates described pinch roller.

15. method as claimed in claim 14 is characterized in that,

Send the rotation of a power transmission shaft of described stepper motor to described pinch roller by one first transmission device.

16. method as claimed in claim 15 is characterized in that,

By one with described first transmission device synchronously second transmission device of inner couplings send the rotation of described power transmission shaft to described ribbon spool around core.

17. method as claimed in claim 16 is characterized in that,

Can release the coupling of turning up the soil with described first transmission device and described stepper motor described comprising synchronously between a position of engagement and a disengaging configuration, when described stepper motor starts for the rotation of described power transmission shaft, the described position of engagement can be meshed described stepper motor turning cylinder drivingly with described first transmission device, and described pull out moving that described ink ribbon produces during, described disengaging configuration is separated described first transmission device and described stepper motor.

18. method as claimed in claim 13 is characterized in that,

Described mobile described printhead is included between a contactless state and a contact condition and pivotally moves described printhead.

19. one kind is used for the method printed on the type belt of a tape drum, this tape drum is housed within the tape printing apparatus in the mode that can take out, described tape drum comprise a colour band of depositing ink ribbon on it deposit core and one be configured be used to deposit print the ink ribbon of using ribbon spool around core, described printing equipment comprises a printhead, it is provided with to such an extent that match with a pinch roller with the adjacent grounded grip with described ink ribbon of described type belt therebetween, so that at least one character is printed on the described type belt, described method comprises:

During print state, described pinch roller is coupled to a driving mechanism, so that drive described type belt and described ink ribbon with synchronized relation; And

During non-print state, pulling out by force under the mobile situation of described type belt, make the releasing coupling of described driving mechanism and described pinch roller so that described ink ribbon with described type belt pull out mobile phase synchronously so that the mode that synchronously is wound on the described coiling core moves.

20. method as claimed in claim 19 is characterized in that,

Described coupling comprises when described driving mechanism is started can be engaged to described driving mechanism with one first transmission device drivingly; And

Described releasing coupling is included in described pulling out and described first transmission device and described driving mechanism is separated during moving moving that described ink ribbon produced.

Images