CN1745446A - Method for making key top made of translucent material., key top marked by that method, key unit, and process for producing key unit - Google Patents

Abstract

A method for marking a key top made of a translucent material with a character, a symbol, or the like, with sufficient wear resistance at a timing free from restriction from other processes, and a process for producing an illumination key unit which can be completed in an extremely short time by determining a destination. Inside of a transparent plastic key top is irradiated intermittently with focused laser light having a wavelength belonging to near infrared region of 1064 nm or less, visible region or near ultraviolet region to form an aggregation of multiple fine carbonization black points and an aggregation of points whitened by fine cracks or bubbling representing a character, a symbol, or the like. Under a state where a process capable of being carried out without determining a destination has ended, production is interrupted temporarily or ended and marking is performed by irradiating the top surface of the key top with laser light upon determination of a character, a symbol, or the like, related with the destination.

Description

The labeling method of transparent keycap, transparent keycap, button assembly and manufacture method

Technical field

The present invention relates to use such as the mobile device of pocket telephone, portable information terminal device (PDA) or the like, with the illuminated button assembly that shows in the general device that the control part of holding concurrently is used, and include and to be depicted in the operation at each button place such as literal notation or the like in interior button assembly manufacture method.

Background technology

Button assembly is to constitute a kind of parts that mobile device is used, and several switching manipulations button (giving as security button) set configuration is on a panel.The keycap that keyseat that each button can be made by soft rubber or hot plastic type synthetic rubber and the hard material that is installed in this keyseat surface are made constitutes.Be formed with switch press jut (being also referred to as " press-fit component ") at keyseat inner face place.Be connected by keyseat between several transversely arranged buttons and the button.Each button is implemented rayed (being also referred to as " illuminated button ") by the light source that is arranged on place, keyseat below, so can adopt light-transmission type material keycap and keyseat.If place below the button assembly that adopts this form of the composition, closely be provided with loop substrate being set, can also form illuminated keyswitch assemblies with the light source that has switch element such as the corresponding position of switch press jut on each button.

When making illuminated button assembly, can produce keycap and keyseat respectively, by bonding agent both combinations are assembled again, also can at first produce keycap, be inserted into again to the keyseat place enforcement insertion moulding that is arranged in extrusion molding dies.Need with the expression each keypress function use such as literal notation or the like, be depicted in the keycap place, this operation is called as " mark operation ".In general, carry out the upper side of keycap (being also referred to as " end face "), downside (bottom surface) or keycap inside etc. relatively in the mark operation.For the occasion that relative end face carries out, institute's mark must have abrasion resistance properties such as literal notation or the like, its another side is that keycap also can be opaque, and can with keycap with carry out after keyseat combines.Carry out the occasion of mark for relative bottom surface, keycap need be transparent, and need end mark operation before keycap and keyseat are implemented to combine.Therefore, must before combination, determine the content that needs mark such as literal notation or the like.

Such as the mobile device of pocket telephone or the like, can use the sale all over the world of different language, and form time between product by selling being determined to of destination, normally very limited.In many parts that the formation mobile device is used, parts except button assembly and the language independent of selling the destination use can be implemented assembling in advance before the sale destination is definite.Yet for button assembly, even will implement mark in advance with part numeral of using language independent or the like, because using language does not determine as yet, need a part of content such as literal notation or the like of mark will be in not definite state, can not carry out final mark operation, manufacturing operation that therefore can not the end key assembly.Consequent problem is, if begin the manufacturing of button assembly again after having determined application target ground, will be difficult to satisfy the time of delivery in time, if produce the button assembly that satisfies the multilingual needs in advance, can occur the excessive problem of quantity in stock again.

The problems referred to above only are to observe the problem-instance that conventional order structure type production system institute can find, in addition formerly technology also has several similar problems that need solutions.If for instance, these problems comprise the problem that how to reduce the leading time that is present in the following patent documentation 1, it is short and be the problem of the time of delivery information of some types to be present in time that how to provide in the patent documentation 2, and is present in problem of the parts formation table how to use all kinds product neatly in the patent documentation 3 or the like.

Patent documentation 1: TOHKEMY 2002-202805 communique

Patent documentation 2: TOHKEMY 2002-244711 communique

Patent documentation 3: TOHKEMY 2003-015722 communique

First problem to be solved by this invention provide exactly a kind of can according to can can not be subjected to by In the key asembly assembling process in the free period of other operation restriction to needs be depicted in the keycap place such as The Content Implementation of literal notation etc. is set, and can make and be depicted in remembering such as literal of keycap place Number etc. have a good abrasion resistance properties mode implement the keycap of mark and corresponding labeling method.

Second problem to be solved by this invention just provides a kind of for relatively illuminated button assembly The keycap end face is implemented the occasion of mark, can adopt make institute's mark such as literal notation etc. tool The keycap moulding material that good abrasion resistance properties is arranged, and corresponding labeling method.

In case the 3rd problem to be solved by this invention just provides after a kind of sale destination determines, Can be in complete in the short time illuminated button assembly manufacture method of this button assembly of the utmost point.

Summary of the invention

With the relevant labeling method of above-mentioned first problem, can be such as laser processing, spray processing method or impregnation printing method.If the employing laser processing can solve above-mentioned problem according to mode as depicted in figs. 1 and 2.In other words be exactly, this labeling method is characterised in that, can be the laser beam that belongs near infrared ray territory, luminous ray territory or near ultraviolet ray territory below the 1064nm with wavelength, focus to the inner needed position of plastic key and implement intermittent irradiation, in the transparent plastic medium, form the aggregate that forms by most trickle carbonization stains, or the aggregate that forms of the albefaction point that forms by most trickle explosions or the like, adopt this mode to such as literal notation or the like enforcement represent.If adopt this labeling method, can be in the free period that can not be subjected to other operation restriction in the button assembly assembling process, to implementing to set such as the content of literal notation or the like.

And in the labeling method that adopts above-mentioned laser processing, using wavelength is 2 following points as the main reason of the laser beam below the 1064nm.The first, when the amplitude of laser beam was identical, the short more energy of wavelength was high relatively more.Second, the easy scioptics optically focused of the spot diameter of near infrared ray～luminous ray of short wavelength～near ultraviolet ray light beam is to 30nm, so be applicable to the albefaction point that forms trickle carbonization stain, forms by trickle explosion, or albefaction point that forms by foaming (separation of resin side chain is foamed).

Yet, what adopt for labeling method is the occasion of infrared ray (wavelength the is 10.6 μ m) light beam launched by carbonic acid gas laser, be difficult to spot diameter is implemented fully to reduce and to be difficult to generate such as trickle carbonization stain or the like, can cause temperature to rise and strengthen injecting power reasonlessly, make plastic key molten molten, so be difficult to satisfy the needs of mark processing.

Adopt the labeling method of spraying processing method, be a kind of illuminated button assembly that the keyseat place that made by the light-transmission type synthetic rubber constitutes that relatively keycap of glass or plastic production is combined in, the particulate of grinding agent blown the end face of the keycap that is attached to glass or plastic production at a high speed and sentence the method for implementing mark.In order to finish above-mentioned problem of the present invention, this injection processing method can be to adopt the mask of mask to spray processing method, also can be not adopt the no mask of mask to spray processing method.

Adopt the labeling method of impregnation printing method, be a kind of end face of relative keycap, or, implement the method for mark by impregnation printing mode by the keycap end face that the resin film lamination forms.

In order to finish above-mentioned second problem, a kind of illuminated button assembly provided by the invention, can be with its surface by the keycap that can be covered with by the plural layers that the laser beam irradiation mode is implemented to print, be combined on the keyseat made by light-transmission type rubber or hot plastic type synthetic rubber (below be also referred to as " light-transmission type keyseat ").Can implement mark to needed such as literal notation or the like with laser beam irradiation to this keycap end face place.If adopt this mode, be marked at the inner place of above-mentioned plural layers such as literal notation or the like, can be not former thereby produce and come off, disappear owing to friction or the like, so can realize good abrasion resistance properties.

The term of Shi Yonging " light-transmission type " is that the contrast term of conduct " Sun-shading type fully " uses in the present invention, is comprising the translucent of coloured, colourless or milkiness or the like in its definition.

Aforesaid, as can to implement printing by laser beam irradiation plural layers can be to disclose disclosed plural layers in No. 02/30677 communique (WO0230677) by the world.In this communique, disclose and below transparent plastic film, located to be provided with the metal evaporation film, and the film that is the multi-ply construction form of dyed layer has been set at a distance of the preset distance place at its downside.By utilizing these plural layers of laser beam irradiation, the metal evaporation film is implemented the mode of removal according to needed shape, can make the folded light beam that provides by dyed layer or cross respective shapes in the metal evaporation film by the light beam transmission of dyed layer below transmission, thereby can implement identification (such as, can referring to Figure 17) to it by the top of plural layers.

In order to finish above-mentioned the 3rd problem, can also be in the manufacture process of this button assembly, when selling that the destination is determined as yet under the state that can implement, that comprise the whole operations end being assembled in, temporarily interrupt its manufacturing and form semi-finished product.In other words be exactly, can be in advance to having the keycap that its surface is covered with by plural layers, and the light-transmission type keyseat is implemented in conjunction with, assembling.For the remaining operation of this greenware condition, only be the operation that relative keycap end face is implemented mark.If with sell the destination relevant be determined such as literal notation or the like after, utilize the end face of laser beam irradiation keycap, comprise and the sale relevant last mark operation in destination, also can provide the manufacture method of the button assembly that completes in a kind of shortest time after the sale destination is determined such as literal notation or the like.

Description of drawings

One of two times of ripple YAG lasers (being output as the light beam of 0.53 green μ m) of the non-linearity crystallization that Fig. 1 can adopt when implementing mark for expression constitutes the schematic diagram that example is used.

The schematic diagram that Fig. 2 uses for explanation the present invention first form of implementation.Fig. 2 (A) expression be at keycap 2 place, middle level, Fig. 2 (B) expression be at keycap 2 the superiors place, Fig. 2 (C) expression be at keycap 2 orlop place, Fig. 2 (D) expression be at the printing layer place of keycap 2 inner faces, the example when utilizing laser beam L to form mark M respectively.

Fig. 3 is contained the schematic block diagram that the general manufacturing process of the different literals formation method in the various forms of implementation of the present invention uses for expression.

A schematic plan view that example is used of the button assembly that Fig. 4 produces by " ground literal formation " the step S3 in the manufacturing process as shown in Figure 3 for expression.

Fig. 5 for explanation in the 5th form of implementation, form the schematic diagram that the implementation step of the marking procedures of mark is used at keycap end face place by the impregnation printing method.Fig. 5 (A) expression be schematic diagram when processing release paper 16 is near state on the button assembly K after assembling, Fig. 5 (B) expression be the schematic diagram of the state of processing release paper 16 thermo-compressed during to keycap 2 places, Fig. 5 (C) expression be to be in the schematic diagram that the state when finishing is printed in impregnation.

Fig. 6 is a keycap end face place that is illustrated in as shown in Figure 5, the schematic amplification profile of the state when implementing mark by the impregnation printing method.

Fig. 7 forms a schematic diagram that example is used of the literal notation of language-specific (Arabic) for representing by " using the language related text to form " the step S6 in the operation as shown in Figure 3 at keycap end face place.

The schematic diagram that Fig. 8 uses in the implementation step of the marking procedures of keycap end face place formation mark by the impregnation printing method for explanation.

Fig. 9 is the schematic amplification profile of the state when being illustrated in a keycap end face place by impregnation printing method enforcement mark.

The schematic block diagram that Figure 10 uses as the manufacturing process's flow process in the manufacture method of the 8th form of implementation for expression.

Figure 11 produces the schematic plan view that button assembly is used for expression by " assembling " the step S4 in the manufacturing process.

The schematic diagram that Figure 12 uses by the step S6 that forms mark towards as shown in figure 10 keycap end face place irradiating laser light beam for explanation.

Figure 13 is the schematic amplification profile of expression by the state when a keycap end face place irradiating laser light beam forms mark.

Figure 14 for expression be formed on keycap end face place, with a schematic diagram that example is used of the literal notation of the numeral of the use language independent of selling the destination or the like and language-specific (Arabic).

Figure 15 for expression by producing the schematic plan view that button assembly is used as " assembling " step S4 in the manufacturing process of the 9th form of implementation (can referring to Figure 10).

Figure 16 is a keycap end face place that is illustrated in by being covered with by the plural layers that the laser beam irradiation mode is implemented to print, the schematic amplification profile of the state when utilizing laser beam irradiation to form mark.

Figure 17 constitutes the schematic diagram that example is used for expression by of the plural layers that can implement to print by the laser beam irradiation mode.

The schematic block diagram that Figure 18 uses as the manufacturing process's flow process in the manufacture method of the tenth form of implementation for expression.

Figure 19 produces the schematic plan view that button assembly is used for expression by " assembling " the step S3 in the manufacturing process as shown in figure 18.

The keycap end face place that Figure 20 makes for the relative glass of explanation implements to spray the mark that adds man-hour and forms the schematic diagram that operation is used.

The schematic amplification profile of the state when Figure 21 implements to spray processing with the enforcement mark for the keycap end face place that represents relative glass making.

Embodiment

(first form of implementation)

What provide here is a kind of employing laser assembly that serves as a mark, and utilizes the form of implementation of transparent plastic material as key cap material.

The example of laser beam L can be green laser beam as shown in Figure 1.As shown in Figure 2, can be at first with the focal point settings of laser beam L foot office in the zone (upper strata, middle level, lower floor or printing layer) that is positioned at the keycap 2 that needs to form mark M, the spot diameter of green laser beam is contracted to 10～30 μ m, and the flat shape of the literal notation of implement describing along needs or the like is implemented irradiation.After the irradiation of implementing along the plane of this first finishes, move to the place, plane that is positioned at last branch, and implement irradiation along the plane of this part.By repeating the mode that relative predetermined portions shines, make literal notation or the like as the operation purpose show as the three-dimensional aggregate of the albefaction point formation that forms by trickle carbonization stain with by explosion or foaming.Occasion for implement laser beam irradiation towards printing layer not only can generate carbonization stain and albefaction point, also can form transparent hole at the shielding layer place to manifest the color of the color layer that is positioned at its downside.

When implementing mark, laser beam need be focused to the pre-desirable position that forms literal notation or the like in the transparent plastic medium.When optical energy is pulse type and is sent to laser beam focus place, can make plastic material carbonization, explosion or foaming form trickle black color dots or albefaction point by rapid variations in temperature.The mirror system (electric scanning assembly) that can by computer control, according to layout the laser beam focus is moved by plane form or three-dimensional form, form the set that constitutes by the trickle carbonization stain of representing corresponding literal notation or the like or albefaction point at its track place such as literal notation or the like.

If for instance, for finishing the employed plastic key of above-mentioned problem with abrasion resistance properties, can be for being plastic key after mode in the plastics medium that floats over keycap inside is implemented mark according to making such as literal notation or the like.

In the above-mentioned plastic key such as literal notation or the like since blocked with the outside between contact and wearing and tearing, so can obtain very advantages of good abrasion performance.And this literal notation or the like is the aggregate that is made of many trickle carbonization stains or albefaction point, is the state that floats in the transparent plastic medium, thus can also utilize lens effect to implement to observe, thus can obtain brand-new visual effect.

For above-mentioned plastic key is the occasion that constitutes by such as transparent polycarbonate resin, can make such as literal notation or the like to be the aggregate that is made of many trickle carbonization stains, is the state that floats in the transparent plastic medium.

Describe below with reference to Fig. 2.Ref. No. 1 expression is the keyseat of being made by silicone rubber among the figure, what Ref. No. 2 was represented is the keycap of being made by polycarbonate resin, what Ref. No. 3 was represented is dome type switch, what Ref. No. S represented is the light-transmission type bonding agent that is positioned between keyseat and keycap, what Ref. No. L represented is laser beam, and Ref. No. M represents is formed in mark in the keycap 2.Fig. 2 (A) expression be at keycap 2 place, middle level, Fig. 2 (B) expression be at keycap 2 the superiors place, Fig. 2 (C) expression be at keycap 2 orlop place, Fig. 2 (D) expression be at the printing layer place of keycap 2 inner faces, the example when forming mark M respectively.Mark M can form the three-dimensional form that is plurality of sections along the thickness direction of keycap.

(second form of implementation)

For adopting the occasion that constitutes above-mentioned plastics keycap 2 such as transparent polypropylene acid formicester (acrylic acid resin), also can make such as literal notation or the like to be the aggregate that the albefaction point that formed by many trickle explosions constitutes, be the state that floats in the transparent plastic medium.

(the 3rd form of implementation)

That employing is sent by Nd:YAG laser (being mixed with the yag crystal laser of neodymium ion), be the light beam of 1064 nanometers as the wavelength of basic wave, wavelength as second high frequency times ripple is the light beam of 532 nanometers, as the wavelength of the 3rd high frequency times ripple any in the light beam of 355 nanometers, as above-mentioned laser beam.The device that can obtain out the second high frequency times ripple of Nd:YAG laser is called as " two times of ripple YAG lasers ", is green because the wavelength launched is the laser beam of 532 nanometers, so be also referred to as " green laser ".Fig. 1 constitutes the schematic diagram (can be referring to holt spring ocean work " レ-ザ は な ", 1992/1 Nikkan Kogyo Shimbun periodical) that example is used for a kind of two times of ripple YAG lasers of expression.And the form of the composition and the cardinal principle shown in Figure 1 of " three times of ripple YAG lasers " that can obtain out the 3rd high frequency times ripple is similar.

(the 4th form of implementation)

Laser device is not limited in and adopts the YAG laser, such as can also be amorphous laser and YVO ₄Other Solid State Laser apparatuses laser or the like, that be mixed with neodymium ion, liquid (エ キ シ マ) laser device or the like.And a high frequency times ripple is not limited in second, third high frequency times ripple, if energy allows to adopt the high frequency times ripple more than the fourth stage.

(the 5th form of implementation)

Mark mode adopts impregnation printing method, key cap material to adopt the form of implementation of transparent resin material to be provided by Fig. 3～Fig. 7.

The mark of keycap end face enforcement need have abrasion resistance properties relatively, so need to adopt the labeling method that can satisfy this requirement.What adopt in this occasion of the present invention is the impregnation printing method.When the key cap surface of making towards hard resin is implemented the impregnation printing; printed ink can be immersed into the certain depth place by the surface always; this compares with the mark that the conventional printing method of employing such as screen print process or the like forms; can realize advantages of good abrasion performance more, thereby no longer need to form the protective layer that literal that protection marks or the like is not worn usefulness.Here, the resin kind can be divided into suitable and inapplicable kind with respect to the impregnation printing method, and suitable resin can be used as illuminated button and uses, and selects so need analyze with material.

In many resin materials, polybutylene terephthalate (PBT) resin is applicable to the impregnation printing method, and has advantages of good abrasion performance, drug-resistant performance, stable molding performance or the like performance, is suitable for using as key cap material.Yet the moulded products of this resin is creamy white, and can not select to make the design of literal of being printed on the keycap inner face or the like by the end face fluoroscopic observation, so there is certain restriction, also needs other resin materials are implemented to select.

The 5th form of implementation of the present invention is to be that example describes to adopt a kind of occasion as key cap material in polyethylene terephthalate (PET) resin or polyformaldehyde (POM) resin.These materials have good impregnation and print applicable performance, and are transparent or semitransparent resin, and case hardness is good, so be applicable to the keycap of making in the illuminated button.

Impregnation printing method to the resin system keycap that adopts this resinoid to mold is implemented can be divided into two kinds, and a kind of is heat-transferring method, and another kind is direct printing method.Adopt heat-transferring method, can be by fusing into the specialty inks that sublimable dye is arranged, literal notation that needs are printed or the like is depicted on the special processing release paper that plastic material makes, and this processing release paper is covered keycap end face place, the crimping scheduled time under predetermined temperature again.Adopt this mode, can make the paint ingredient in the printing ink produce the distillation gasification, soak into to play the dark resin inside of 30～50 μ m by the surface and locate, thereby will be fixed on the surface layer of keycap such as literal notation or the like.

Corresponding is, if adopt direct printing method, can adopt specialty inks same as described above, directly implement a wire mark system and silk screen printing, after implementing to print, under predetermined condition, implement heat treatment again such as literal notation or the like towards the keycap end face.Adopt this mode, can be similar with the above-mentioned heat-transferring method of employing, make the paint ingredient in the printing ink produce the distillation gasification, soak into to resin is inner and locate, thereby will be fixed on the surface layer of keycap such as literal notation or the like.

In Fig. 3, what reference number S1 represented is the operation that forms keyseat.What reference number S2 represented is the operation that forms keycap.Reference number S3 represents is to write operation such as ground literal or the like to key cap surface, and also can skip this operation when needed.What reference number S4 represented is keycap to be bonded to sentence the operation that is assembled into button assembly above the keyseat.Even what reference number S5 represented is the operation of firm sale destination with language.What reference number S6 represented is to write such as the operation of using language related text or the like to the keycap end face.

In Fig. 4, what reference number K represented is button assembly, and what reference number 1,1a represented is the keyseat of being made by silicone rubber or hot plastic type synthetic rubber, and what reference number 2 was represented is keycap, reference number 4 expression be ground literal, reference number 5 expressions be to use the language related text.As mentioned above, Fig. 3 implements the schematic block diagram that the manufacturing process of the illuminated button assembly K of mark uses for expression as assembling back of the present invention, the schematic plan view that example is used of the button assembly K that Fig. 4 produces by " ground literal formation " operation as shown in Figure 3 for expression.

Manufacturing process as this form of implementation can be as shown in Figure 3, form keycap 2 and keyseat 1 (step S1, step S2) respectively by injection-molded molding mode, and will form (step S3 on the keycap 2 with the numeral of using language independent or the like (ground literal) 4, can skip when needed) afterwards, keycap 2 combinations are assembled in (step S4) on the keyseat 1 by bonding agent or the like.Place, bottom surface at each keycap 2 ovalize or flat shape as shown in Figure 4, that be made of transparent hard resin is formed with the ground literal 4 that is made of numeral and mark.These ground literals 4 and use language independent so can " selling the destination determines " (step S5) in above-mentioned block diagram form before, can temporarily be interrupted the manufacturing process with the end key assembly in this state.As shown in Figure 4, can see through keycap 12 and observe ground literal 4.

Determining to sell the destination, promptly determining when using the relevant literal notation part of language, can begin or begin the manufacturing process of button assembly K once more, by the impregnation printing method will be relevant with the use language of selling the destination literal notation part or the like (use language related text) 5, be marked at the end face place (step S6) of keycap 2.Whole manufacturing process finishes when the final mark of implementing to the end face of keycap 2 finishes.To be assembled on the predetermined mobile device as the button assembly K that makes finished product, sell to this destination outlet.

The schematic diagram that Fig. 5 uses in the marking procedures of the end face place of keycap 2 formation mark by the impregnation printing method for explanation.As a kind of heat-transferring method of impregnation printing method, can adopt in advance by sublimation ink and on plastic film, be printed with special processing release paper 16 such as literal notation or the like.Fig. 5 (A) expression be schematic diagram when processing release paper 16 is near state on the button assembly K after assembling, Fig. 5 (B) expression be the schematic diagram of the state of processing release paper 16 thermo-compressed during to keycap 2 places, Fig. 5 (C) expression be to be in the schematic diagram that the state when finishing is printed in impregnation.Fig. 6 is the end face place that is illustrated in a keycap 2, the schematic amplification profile of the state when implementing mark by the impregnation printing method, what represented by some dotted lines at place, the top of keycap 2 is the scope of soaking into (forming the scope of using language related text 5 or the like) of printed ink, the printing layer (forming the scope of ground literal 4 or the like) that the bottom surface of being represented by the thick line at place, keycap bottom that is formed in keycap 2 is located.

Fig. 7 forms the schematic diagram of an example (can observe in the lump with the ground literal 4 at the place, bottom surface that the is formed on keycap 2) usefulness of the literal notation of language-specific (being Arabic) for representing by selling the mark operation after the destination is determined in illustrated example at the end face place of keycap 2.

(the 6th form of implementation)

Different with aforementioned the 5th form of implementation, this form of implementation is to be that example describes to adopt Merlon (PC) resin as the occasion of key cap material.The PC resin often uses the keycap place in mobile device usefulness button assembly, is a kind of normally used material, and its shortcoming is that this material is a kind of noncrystal resin, the case hardness deficiency.Therefore, if directly the key cap surface that the PC resin is made is implemented the impregnation printing, tend to impregnation printing ink be come off owing to the wearing and tearing of resin surface.

For the occasion that adopts the PC resin, can on covering, the key cap surface place have the protection cover layer of high abrasion resistance energy in advance, and implement impregnation thereon again and print.If for instance, can adopt ultraviolet hardening resin (UV protective agent), as protection cover layer manufacturing materials such as the polyurethane with abrasion resistance properties-acrylic acid lipid.And, no matter implement whether still to need to be provided with the protection cover layer after impregnation is printed, as mentioned above, before the sale destination is determined, set in advance the protection cover layer and adapt with purpose of the present invention.

(the 7th form of implementation)

And the difference between aforementioned the 5th form of implementation and aforementioned the 6th form of implementation has been illustrated among Fig. 8 and Fig. 9.This is a kind of employing polybutylene terephthalate (PBT) resin film, or the film that is formed by the mixture of PBT resin and Merlon (PC) resin is as key cap material, be shaped to the 3D shape of keycap, side recess place is packed into other transparent resin to form keycap within it, and then, implement to print to form the manufacture method of button assembly such as the impregnation of literal notation or the like in the resin film surface of the keycap that utilizes this resin lamination to form.

Polybutylene terephthalate (PBT) resin be in the many kinds of resin materials impregnation to print applicable performance more a kind of than higher, the moulded products that is this resin is creamy white, can not select to make the design of literal of being printed on the keycap inner face or the like, so there is certain restriction by the end face fluoroscopic observation.Yet the PBT resin has the advantages of good abrasion performance in the occasion of using as film, and processability is good, occasion be shaped to 3D shape by the extrusion process mode can stably keep its 3D shape, therefore has good performance when the film of using as keycap uses.

And in this form of implementation, be to make the PBT resin be relatively thinner film (thickness is 20～300 μ m), or for adopting the relatively thinner film after the PS resin is implemented to dilute to the PBT resin, so can make as the milky of PBT resin inherent colour more weakly, and can effectively utilize its impregnation and print applicable performance and abrasion resistance properties, stable molding performance or the like performance.If therefore for instance, can adopt the PC resin, or the mixture of PC resin and polystyrene (PS) resin, as forming the transparent resin that the keycap main part is used.

Impregnation printing method to the lamination keycap that adopts the aforementioned resin film forming to go out is implemented can be divided into two kinds usually, and a kind of is heat-transferring method, and another kind is direct printing method.Adopt heat-transferring method, can be by fusing into the specialty inks that sublimable dye is arranged, literal notation that needs are printed or the like is depicted on the special processing release paper that plastic material makes, and this processing release paper is covered keycap end face place, the crimping scheduled time under predetermined temperature again.Adopt this mode, can make the paint ingredient in the printing ink produce the distillation gasification, soak into to play the dark resin inside of 30～50 μ m by the surface and locate, thereby will be fixed on the surface layer of keycap such as literal notation or the like.

Corresponding is, if adopt direct printing method, can adopt specialty inks same as described above, directly implement a wire mark system and silk screen printing, after implementing to print, under predetermined condition, implement heat treatment again such as literal notation or the like towards the keycap end face.Adopt this mode, can be similar with the above-mentioned heat-transferring method of employing, make the paint ingredient in the printing ink produce the distillation gasification, soak into to resin is inner and locate, thereby will be fixed on the surface layer of keycap such as literal notation or the like.

It is identical that the operation of this form of implementation and process chart are as shown in Figure 3 represented.And in Fig. 8, what reference number K represented is button assembly, what reference number 12 was represented is keycap, what reference number 12a represented is the resin thin film layer that is positioned at perimembranous place, keycap 12 outside, what reference number 13 was represented is keyseat, reference number 4 expression be ground literal, reference number 5 expressions be to use the language related text.As mentioned above, Fig. 3 implements the schematic block diagram that the manufacturing process of the illuminated button assembly K of mark uses for expression as assembling back of the present invention, the schematic plan view that example is used of the button assembly K that Fig. 4 produces by " ground literal formation " operation as shown in Figure 3 for expression.

This manufacturing process can be as shown in Figure 3, form keycap 12 and keyseat 13 (step S1, step S2) respectively by injection-molded molding mode, and (step S 3 on the keycap 12 forming with the numeral of using language independent or the like (ground literal) 4, can skip when needed) afterwards, keycap 12 combinations are assembled in (step S4) on the keyseat 13 by bonding agent or the like.Place, bottom surface at keycap 12 ovalize or flat shape as shown in Figure 4, that be made of the resin film lamination at each button place is formed with the ground literal 4 that is made of numeral and mark.These ground literals 4 and use language independent so can " selling the destination determines " (step S5) in above-mentioned block diagram form before, can temporarily be interrupted the manufacturing process with the end key assembly in this state.As shown in Figure 2, can see through keycap 12 and observe ground literal M (4).

Determining to sell the destination, promptly determining when using the relevant literal notation part of language, can begin or begin the manufacturing process of button assembly K once more, by the impregnation printing method will be relevant with the use language of selling the destination literal notation part or the like (use language related text) 5, the end face (resin thin film layer 2a) that is marked at keycap 2 is located (step S6).Whole manufacturing process finishes when the final mark of implementing to the end face of keycap 2 finishes.To be assembled on the predetermined mobile device as the button assembly K that makes finished product, sell to this destination outlet.

The schematic diagram that Fig. 8 uses in the marking procedures of the end face place of keycap 12 formation mark by the impregnation printing method for explanation.As a kind of heat-transferring method of impregnation printing method, can adopt in advance by sublimation ink and on plastic film, be printed with special processing release paper 16 such as literal notation or the like.Fig. 8 (A) expression be schematic diagram when processing release paper 16 is near state on the keycap 12 after assembling, Fig. 8 (B) expression be the schematic diagram of processing release paper 16 thermo-compressed state when (such as connecing about 5 minutes) to keycap 12 places 150 ℃ temperatures, Fig. 8 (C) expression be to be in the schematic diagram that the state when finishing is printed in impregnation.Fig. 9 is the end face place that is illustrated in a keycap 12, the schematic amplification profile of the state when implementing mark by the impregnation printing method, what represented by the line segment at place, the top of resin film 12a is that printed ink on resin film 12a is soaked into scope (forming the scope of using language related text 5 or the like), the printing layer (forming the scope of ground literal 4 or the like) that the bottom surface of being represented by the thick line at place, keycap bottom that is formed in keycap 2 is located.

Fig. 7 forms the schematic diagram of an example (can observe in the lump with the ground literal 4 at the place, bottom surface that the is formed on keycap 2) usefulness of the literal notation 5 of language-specific (being Arabic) for representing by selling the mark operation after the destination is determined in illustrated example at the end face place of keycap.

(the 8th form of implementation)

Below with reference to Figure 10～Figure 14, identical in laser and first～the 4th form of implementation that labeling method is used, generation describes such as the 8th different form of implementation of the concrete mode of literal notation or the like at the keycap place and utilize laser beam.The schematic block diagram that Figure 10 uses as manufacturing process's flow process of the illuminated button assembly 21 of assembling of the present invention back enforcement mark for expression.And, among each figure below Figure 11, what reference number 21 was represented is button assembly, what reference number 22 was represented is keycap, what reference number 23 was represented is the keyseat of being made by silicone rubber or hot plastic type synthetic rubber, reference number 24 expression be ground literal, reference number 25 expressions be to use the language related text, reference number 26 expressions be laser beam flux irradiating apparatus.

In this form of implementation, can be as shown in the process chart of Figure 10, employing is combined with the resin combination as an amount of ケ チ エ Application Block ラ Star Network of absorbent in Merlon (PC) resin, by injection-molded molding mode formation keycap 22 (step S1) as shown in figure 11, adopt silicone rubber to form keyseat 23 (step S2) afterwards, keycap 22 combinations are assembled in (step S4) on the keyseat 23 by bonding agent or the like by injection-molded molding mode.As required, can also on keyseat 23, be formed with photomask in the place.Keycap 22 is the translucent or opaque moulded products of grey or black, be configured in keycap bottom surface place such as literal notation or the like can not by top fluoroscopic observation to the form of the composition.Therefore, can not carry out under the state of place, keycap bottom surface mark literal, implementing assembling procedure (step S4), and temporarily interrupt the manufacturing process of button assembly 21 in this state.The schematic plan view of button assembly 21 usefulness when Figure 11 finishes for expression assembling procedure (step S4).Because integral body is black, and the top of keyseat 23 implemented shading, cooperates corresponding grey or black so the keycap 22 of ovalize or flat shape also is with ケ チ エ Application Block ラ Star Network.

Determining to sell the destination, promptly determining when using the relevant literal notation part of language, can begin the manufacturing process of button assembly 21 once more, with as shown in figure 14 with the numeral of using language independent or the like (ground literal) 4, combine with the literal notation part relevant or the like (use language related text) 5, be marked at the end face place (step S6) of keycap 22 by the laser beam irradiation mode with the use language of selling the destination.Whole manufacturing process finishes when the final mark of implementing to the end face of keycap 22 finishes.To be assembled on the predetermined mobile device as the button assembly 21 of making finished product, sell to this destination outlet.

If for instance, from having the angle of heat resistance, abrasion resistance properties, impact resistance or the like, the resin material that is suitable for forming material as keycap can also be POM (polyformaldehyde) resin, ABS (acrylonitrile-butadiene-styrene copolymer) resin, HIPS (impact resistant polystyrene) resin, PP (polypropylene) resin, PA (polyamide) resin, PBT (polybutylene terephthalate (PBT)) resin, synthetic (mixing) resin of ABS-PBT, ABS-PC synthetic resin or the like except above-mentioned PC resin.

And, except above-mentioned ケ チ エ Application Block ラ Star Network, can also in these resins, fit into suitable pigment and additive or the like, thereby can also make the color that marks, be yellow, green, blue look, orange, pink colour or the like such as literal notation or the like.For this occasion, can also change the text color at each keycap place according to the function of each button.

The schematic diagram that Figure 12 uses by the marking procedures that forms mark towards the end face place of keycap 22 irradiating laser light beam for explanation.At first, needs are marked at keycap 22 the end face place, with the numeral of using language independent or the like (ground literal) 24 with use language related text mark or the like 25 to combine, be designed to the indicia patterns M that differs from one another with respect to button one by one.Whole buttons that this design can be included in the object button assembly relatively carry out in the lump.Subsequently, the indicia patterns of the key groups relevant with this design can be inputed to laser beam flux irradiating apparatus 26, and implement to store as numerical data.Laser beam flux irradiating apparatus 26 is according to stored numerical data, the three-dimensional position (X, Y, Z coordinate) of laser beam hot spot and the on-off time of laser beam irradiation are implemented related control, implement predetermined mark operation according to the end face of the relative keycap 2 of full-automatic mode.

As long as use can produce the mark energy needed at the laser beam vibration generation component at laser beam flux irradiating apparatus 26 places, the present invention does not have special restriction to it.If for instance, can adopt at present extensively universal carbonic acid gas laser, as YAG laser of typical solid laser or the like.And the form of oscillator signal can be a continuous type, also can be (impulse type) of batch-type.

Figure 13 is the end face place that is illustrated in a keycap 22, the schematic Zoom Side profile of the state when implementing mark by laser processing.Literal notation M that locates under the end face that is formed in keycap 22 that dotted line is represented among the figure, constitute by the three-dimensional aggregate of albefaction point or the like.

The schematic plan view of button assembly 21 usefulness when Figure 14 is the mark end of job state of representing after the destination is determined.As seen from the figure, be formed with ground literal 24 at the end face place of button assembly 21, and the literal notation 25 of the language-specific combined with it (being Arabic in illustrated example).

(the 9th form of implementation)

Below with reference to Figure 15～Figure 17, institute's mark had very advantages of good abrasion performance such as literal notation or the like, in order promptly can in the very short time, to finish this button assembly producing illuminated button assembly, and adopting its surface to describe by the 9th form of implementation of the keycap that can be covered with by the plural layers that laser beam irradiation implements to print in case determined the destination.

The illuminated button assembly that provides by the 9th form of implementation, be with its surface by the keycap that can be covered with by the plural layers that laser beam irradiation implement to be printed, the mode on the keyseat made by light-transmission type rubber or hot plastic type synthetic rubber (below be also referred to as the light-transmission type keyseat) of being combined in forms.Subsequently, the end face place of laser beam irradiation to this keycap can be implemented mark to needed such as literal notation or the like.Adopt this mode, be marked at the inner place of above-mentioned plural layers such as literal notation or the like, can be not former thereby produce and come off, disappear owing to friction or the like, so can realize good abrasion resistance properties.

If for instance, can implement the plural layers of printing by laser beam irradiation, the international disclosed plural layers in No. 02/30677 communique (WO0230677) that disclose of can serving as reasons.In this communique, disclose and below transparent plastic film, located to be provided with the metal evaporation film, and be provided with a kind of film that is the multi-ply construction form of dyed layer at its downside at a distance of the preset distance place.

In the manufacture process of this button assembly, can sell can implement when the destination is determined as yet, comprise under the state that the whole operations being assembled in finish, temporarily interrupt or finish making and the formation semi-finished product.In other words be exactly, the keycap that can be covered with by plural layers its surface in advance, and the light-transmission type keyseat is implemented combination, assembling.For the remaining operation of this greenware condition, only be the operation that relative keycap end face is implemented mark.In case with sell the destination relevant partly or the like be determined such as literal notation after, can utilize the end face of laser beam irradiation keycap, comprise and the sale relevant last mark operation in destination, thereby can in the shortest time after the sale destination is determined, complete button assembly such as literal notation or the like.

Represent the schematic block diagram that manufacturing process's flow process of this illuminated button assembly is used, the Figure 10 that uses with expression the 8th form of implementation is identical.Figure 17 is the schematic diagram that the formation example is used of expression plural layers 2a.In Figure 17, Ref. No. 37 expression be plastic film among the plural layers 2a, Ref. No. 38 expressions be the metal evaporation film, Ref. No. 39 expressions be coloring film.

Below with reference to Figure 17, to describing by the plural layers 2a that laser beam irradiation is implemented to print.Can adopt thickness be polyethylene terephthalate (PET) resin film of 50 μ m as plastic film 37, be the protective layer of the 10 μ m color layer (forming the external packing color) 40 of holding concurrently by thickness in its lower section, forming thickness again is the aluminium-vapour deposition film 38 of 100nm.Place below this vapor-deposited film 38; further overlap to form and be protective layer transparent or the colored transparent form, that thickness the is 10 μ m color layer 41 of holding concurrently; thickness is the adhesive linkage 42 of 20 μ m; thickness is the dyed layer 39 (being formed with literal) of 10 μ m, and thickness is the PET resin film 37a of 50 μ m.

To the extrusion modling of this plural layers 2a implementation model, form the outer shape of keycap 2 as shown in Figure 4, side recess place is packed into the transparent hard resin 10 such as Merlon (PC) resin or PET resin or the like within it, is made into keycap 2.

The schematic process chart of this form of implementation is identical with process chart shown in Figure 10.Can produce keycap 2 and keyseat 1 (step S1, step S2) respectively, both be implemented bonding assembling (step S4) by bonding agent or the like.Place on keyseat 1 can also be formed with photomask as required.Outside the part of implementing to print by the laser beam irradiation method by end face in the surface of keycap 2, implementing to cover by opaque plural layers 2a, be the bottom surface place that is configured in keycap 2 such as literal notation or the like can not by top fluoroscopic observation to the form of the composition.Therefore, can not carry out under the state of place, keycap bottom surface enforcement literal or the like mark, implementing assembling procedure (step S4), and temporarily interrupt the manufacturing process of button assembly K in this state, form semi-finished product.

If can adopt identical mark mode,, also can implement corresponding operation (trickle control being implemented in the action of marker assemblies) by the mode of the action of marker assemblies being implemented control at same in-process even for the occasion that is mixed with some kinds of keycaps.If for instance, for spraying the occasion of processing mode, can implement hybrid process to the keyseat that the keycap and the glass of resin making are made for mark mode.For mark mode is the occasion of laser processing mode, also can mix with the film keycap, by the button behind melanism or the albefaction mode mark, by the button behind the polychrome color mark and implement corresponding processing.

The schematic plan view that button assembly K used when Figure 15 finished for expression assembling procedure (step S4).Oval or flat shape part shown in the figure, the keycap 2 when printing.

Determining to sell the destination, promptly determining when using the relevant literal notation part of language, can begin the manufacturing process of button assembly K once more, to as shown in Figure 7 with the numeral of using language independent or the like (ground literal) 4, implement to make up with the literal notation part relevant or the like (using the language related text) 5, by implementing mark (step S6) towards the mode of the end face place of keycap 2 irradiating laser light beam with the use language of selling the destination.Whole manufacturing process finishes when the final mark of implementing to the end face of keycap 2 finishes.To be assembled on the predetermined mobile device as the button assembly K that makes finished product, sell to this destination outlet.

The end face of keycap 2 is implemented the marking procedures figure of laser beam irradiation relatively, and is identical with process chart shown in Figure 12.At first, needs are marked at keycap 2 the end face place, with the numeral of using language independent or the like (ground literal) 4 with use language related text mark or the like 5 to combine, be designed to the indicia patterns that differs from one another with respect to button one by one.Whole buttons that this design can be included in the object key groups relatively carry out in the lump.Subsequently, the indicia patterns relevant with this design can be inputed to laser beam flux irradiating apparatus 26, and implement to store as numerical data.Laser beam flux irradiating apparatus 26 is according to stored numerical data, the three-dimensional position (X, Y, Z coordinate) of laser beam hot spot and the on-off time of laser beam irradiation are implemented related control, implement predetermined mark operation according to the end face of the relative keycap 22 of full-automatic mode.

As long as use can produce the mark energy needed at the laser beam vibration generation component at laser beam flux irradiating apparatus 26 places, the present invention does not have special restriction to it.If for instance, can adopt at present extensively universal carbonic acid gas laser, as YAG laser of typical solid laser or the like.And the form of oscillator signal can be a continuous type, also can be (impulse type) of batch-type.

Figure 16 is the end face place that is illustrated in a keycap 2, the schematic Zoom Side profile of the state when implementing mark by laser processing.Be covered with the doublet among the multiple film 2a at keycap 2 places, expression be combination (4+5) mark position of the literal notation 5 of ground literal 4 and language-specific.

Button assembly K during mark end of job state after the destination is determined is identical with as shown in Figure 7 state.As seen from the figure, be formed with ground literal 4 at the end face place of button assembly 2, and the literal notation 5 of the language-specific combined with it (being Arabic in example shown in Figure 7).

(the tenth form of implementation)

The tenth form of implementation is illustrated for example by Figure 18～Figure 21, as the button assembly of this form of implementation, can be on the keyseat of being made by silicone rubber or hot plastic type synthetic rubber, is combined with the illuminated button assembly of the keycap of glass making.The labeling method that this form of implementation is used is the injection processing method of the particulate of grinding agent being blown the end face place of the keycap that is attached to the glass making at a high speed.Realizing that in order to finish above-mentioned problem, this injection processing method can be to adopt the mask of mask to spray processing method, also can be not adopt the no mask of mask to spray processing method.

Glass has very good properties of transparency, case hardness and abrasion resistance properties, so can implement engraving by spraying the freely relative glass surface of processing method.Add man-hour when mark being implemented on the surface of glass keycap by the injection processing method, can make such as literal notation or the like and show as the regular pattern that forms by trickle sags and crests set (wrinkle Zhe), thereby can produce the outward appearance that diffuse reflection forms create an aesthetic feeling light beam.This wrinkle Zhe regular pattern is to carve in the surface of glass keycap, so can not occur coming off and disappearing, can give play to good abrasion resistance properties.

In the manufacture process of this button assembly, under the state that can implement, that comprise the whole operations end in being assembled in, temporarily interrupt or the end manufacturing in the time of can determining as yet in the sale destination.In other words be exactly to implement combination, assembling in advance to implementing mark to glass keycap and light-transmission type keyseat with numeral of using language independent or the like.For the remaining operation of this greenware condition, only be the operation that relative keycap end face is implemented mark.In case after the literal notation relevant with selling the destination partly is determined, can utilizes and spray the last mark operation of processing method enforcement.

For this occasion; if what adopt is in the surface as the glass keycap of processing object; the mask-type of implementing to protect such as the part beyond literal notation or the like of needs being implemented mark by mask sprays processing method; because it is long that mask forms the needed time, is difficult to realize well purpose of the present invention.Therefore, can adopt the no mask-type injection processing method that does not need to use mask.Adopt this mode, the button assembly that can in the shortest time after the sale destination is determined, complete, and can fully satisfy the problem needs.

The schematic block diagram that Figure 18 uses for manufacturing process's flow process of expression illuminated button assembly of the present invention.Figure 19 is for representing the schematic plan view by button assembly 1 usefulness of producing as above-mentioned " ground literal formation " step shown in Figure 180.In Figure 19～Figure 20, what Ref. No. 1 was represented is button assembly, what Ref. No. 2 was represented is the glass keycap, what Ref. No. 3 was represented is the light-transmission type keyseat, what reference number 4 was represented is ground literal, reference number 5 expression be to use the language related text, reference number 46 expressions be automatic labelling apparatus, reference number 47 expressions be jet processing apparatus.

Shown in the process chart as shown in Figure 18, glass keycap 2 shown in Figure 19 and light-transmission type keyseat 1 (step S1, step S2) can produced respectively, will with the numeral of using language independent or the like (ground literal) 4, by print, engraving, spray processing or the like mode be formed on glass keycap 2 such as place, bottom surface (step S3) afterwards, be assembled in (step S4) on the light-transmission type keyseat 1 by bonding agent or the like with glass keycap 2 is bonding.Oval or flat shape part shown in Figure 19 is the glass keycap 2 of each button, and its place, bottom surface is formed with the ground literal 4 that is made of numeral and mark.These ground literals 4 and use language independent so can " selling the destination determines " (step S5) in above-mentioned block diagram form before, can temporarily be interrupted the manufacturing process of button assembly K in this state.

As shown in Figure 19, can see through each glass keycap 2 and observe ground literal 4.And, can also after having determined application target ground, ground literal 4 be marked at the end face place of glass keycap 2 in the lump with using language related text 5.For this occasion, also can skips steps S3, glass keycap 2 is not implemented to print and directly enter to assembling procedure S4.

Determining to sell the destination, promptly determining when using the relevant literal notation part of language, can begin the manufacturing process of button assembly K once more, by spraying literal notation that processing method will be relevant with the use language of selling the destination or the like (use language related text) 5, the end face (resin thin film layer 2a) that is marked at glass keycap 2 is located (step S6).Whole manufacturing process finishes when the final mark of implementing to the end face of glass keycap 2 finishes.To be assembled on the predetermined mobile device as the button assembly K that makes finished product, sell to this destination outlet.

Figure 20 sprays processing method for explanation by no mask-type, the schematic diagram of using in the marking procedures of the end face place of glass keycap 2 formation mark.At first, can adopt CAD device or the like, the end face place towards glass keycap 2 is implemented designing such as use language related text mark or the like 5 enforcements of mark.Whole buttons that this design can be included in the object button assembly relatively carry out in the lump.Subsequently, indicia patterns relevant with this design, that glass keycap 2 is implemented mark can be inputed to automatic labelling apparatus 46, and implement to store as numerical data.Automatically labelling apparatus 46 is according to stored numerical data, related control is implemented with the on-off time that grinding agent sprays in nozzle plane position (X of spray nozzle front end, Y coordinate) to jet processing apparatus 47, implements predetermined mark operation according to the end face of the relative glass keycap 2 of full-automatic mode.

If for instance, above-mentioned jet processing apparatus 47 can adopt TOHKEMY 2000-94332 communique disclosed " powder jetting processing unit (plant) ".If for instance, it is molded and shaped that glass keycap 2 can be approximately 500 ℃ low-melting glass by softening point, and can adopt spherical steel sand to implement to spray processing as grinding agent.

After determining, the sale destination carries out mark by spraying processing mode, thereby form a profile instance (can observe ground literal 4 in the lump) of the literal notation 5 of language-specific (in illustrated example, being Arabic) at the end face place of glass keycap 2, identical with as shown in Figure 7.

(the 11 form of implementation)

In the 11 form of implementation, be to select hard resin as the moulding material of button assembly.In other words be exactly to provide a kind of soft rubber or the keyseat (being also referred to as the light-transmission type keyseat) of hot plastic type synthetic rubber making and illuminated button assembly of the keycap that hard resin is made with light transmission.This form of implementation is selected the labeling method of use, is the injection processing method of the particulate of grinding agent being blown the keycap end face place that is attached to the hard resin making at a high speed.In order to finish above-mentioned problem, this injection processing method can be to adopt the mask of mask to spray processing method, also can be not adopt the no mask of mask to spray processing method.

(Versatile content)

The hard resin material that the keycap moulding is used is preferably and can makes the material that moulded products is transparent and case hardness is bigger.If for instance, this class material can be polyethylene terephthalate (PET) resin, polyarylate (PAR) resin, polyacrylate (PMMA, PAA) resin, polypropylene (PP) resin, impact resistant polystyrene (HIPS) resin, styrene-acrylonitrile copolymer (SAN) resin or the like, yet the present invention is not limited to this.And, spraying processing method if adopt, can implement freely to carve on the surface of hard resin moulded products.Add man-hour when mark being implemented on the surface of hard resin system keycap by the injection processing method, can make such as literal notation or the like and show as the regular pattern that forms by trickle sags and crests set (wrinkle Zhe), thereby the diffuse reflection that can pass through that light beam is produced forms the outward appearance of create an aesthetic feeling.This wrinkle Zhe regular pattern is to carve in the surface of glass keycap, so can not occur coming off and disappearing, can give play to good abrasion resistance properties.

In order to realize purpose of the present invention, can be in the manufacture process of this button assembly, when selling that the destination is determined as yet under the state that can implement, that comprise the whole operations end being assembled in, temporarily interrupt or finish its manufacturing.In other words be exactly to implement combination, assembling in advance to implementing mark to hard resin system keycap and light-transmission type keyseat with numeral of using language independent or the like.For the remaining operation of this state, only be the operation that relative keycap end face is implemented mark.In case after the literal notation relevant with selling the destination partly is determined, can utilizes and spray the last mark operation of processing method enforcement.

For this occasion; if what adopt is in the surface as the hard resin system keycap of processing object; the mask-type of implementing to protect such as the part beyond literal notation or the like of needs being implemented mark by mask sprays processing method; because it is long that mask forms the needed time, is difficult to realize well purpose of the present invention.Therefore, can adopt the no mask-type injection processing method that does not need to use mask.Adopt this mode, the button assembly that can in the shortest time after the sale destination is determined, complete, and can fully satisfy the problem needs.

The schematic block diagram of using as manufacturing process's flow process of illuminated button assembly of this form of implementation of expression, identical with as shown in figure 18.And, by as the schematic plan view used of the button assembly K that produces of above-mentioned " ground literal formation " step shown in Figure 180, identical with as shown in figure 19.What Ref. No. K represented among the figure is button assembly, what Ref. No. 2 was represented is hard resin system keycap, what Ref. No. 1 was represented is the light-transmission type keyseat, what reference number 4 was represented is ground literal, reference number 5 expression be to use the language related text, what reference number 46 was represented is automatic labelling apparatus, and what reference number 47 was represented is jet processing apparatus.

As shown in Figure 18, hard resin system keycap 2 and light-transmission type keyseat 1 (step S1, step S2) can produced respectively, will with the numeral of using language independent or the like (ground literal) 4, the hard resin system of being printed on keycap 2 such as bottom surface place (step S3) afterwards, be assembled in (step S4) on the light-transmission type keyseat 1 by bonding agent or the like with hard resin system keycap 2 is bonding.Oval or flat shape part shown in Figure 19 is the hard resin system keycap 2 of each button, and its place, bottom surface is formed with the ground literal 4 that is made of numeral and mark.

These ground literals 4 and use language independent so can " selling the destination determines " (step S5) in above-mentioned block diagram form before, can temporarily be interrupted the manufacturing process of button assembly K in this state.As shown in Figure 19, can see through keycap 2 and observe ground literal 4.And, can also after having determined application target ground, ground literal 4 be marked at the end face place of hard resin system keycap 2 in the lump with using language related text 5.For this occasion, also can skips steps S3, hard resin system keycap 2 is not implemented to print and directly enter to assembling procedure S4.

Determining to sell the destination, promptly determining when using the relevant literal notation part of language, can begin the manufacturing process of button assembly K once more, by spraying literal notation part that processing method will be relevant with the use language of selling the destination or the like (use language related text) 5, be marked at the end face place (step S6) of hard resin system keycap 2.Whole manufacturing process finishes when the final mark of implementing to the end face of hard resin system keycap 2 finishes.To be assembled on the predetermined mobile device as the button assembly K that makes finished product, sell to this destination outlet.

Figure 20 sprays processing method for explanation by no mask-type, the schematic diagram of using in the marking procedures of the end face place of hard resin system keycap 2 formation mark.At first, can adopt CAD device or the like, the end face place towards hard resin system keycap 2 is implemented designing such as use language related text mark 5 or the like enforcement of mark.Whole buttons that this design can be included in the object button assembly relatively carry out in the lump.Subsequently, indicia patterns relevant with this design, that hard resin system keycap 2 is implemented mark can be inputed to automatic labelling apparatus 46, and implement to store as numerical data.Automatically labelling apparatus 46 is according to stored numerical data, related control is implemented with the on-off time that grinding agent sprays in nozzle plane position (X of spray nozzle front end, Y coordinate) to jet processing apparatus 47, implements predetermined mark operation according to the end face of the relative hard resin system keycap 2 of full-automatic mode.

If for instance, above-mentioned jet processing apparatus 47 can adopt TOHKEMY 2000-94332 communique disclosed " powder jetting processing unit (plant) ".If for instance, hard resin system keycap 2 can be molded by polyethylene terephthalate (PET) resin injection, and can adopt spherical steel sand to implement to spray processing as grinding agent.

The schematic amplification profile of the state when Figure 21 implements inject process with the enforcement mark for the end face place that represents a relative hard resin system keycap 2." xxx " expression be engraving the end face place of hard resin system keycap 2 such as literal notation or the like.

After determining, the sale destination carries out mark by spraying processing mode, thereby form a profile instance of the literal notation 5 of language-specific (being Arabic) at the end face place of hard resin system keycap 2, in illustrated example with identical (can observe ground literal 4 in the lump and use language related text 5) as shown in Figure 7.

If adopt first～the 4th form of implementation (can be referring to the labeling method of Fig. 1～Fig. 2) provide, in the time of can in the inside medium of the plastic key that uses such as pocket telephone or the like, implementing the laser labelling such as literal notation or the like, the beam spot diameter is implemented to shrink to improve the optical energy at point of irradiation place, thereby the temperature that is positioned at the part place outside the point of irradiation can be remained under the allowable temperature, and can implement the mark operation apace.

Plastic key provided by the invention can make the contact and the friction blocking-up mutually that apply such as literal notation or the like and outside, so can obtain very advantages of good abrasion performance.And these literal notations or the like are the state that floats in the plastics medium, can utilize lens effect to implement to observe, thereby can obtain brand-new visual effect.

If adopt the present invention, can be by single operation, needed afterwards such as literal notation or the like on the inner marker of the transparent plastic medium of not printing, so can obtain a kind of novel button assembly manufacture method as claimed in claim 6 thus.Adopt this novel button assembly manufacture method, can shorten by selling the destination being determined to the needed time of product export significantly, improve QoS of customer.

If adopt the 5th form of implementation (can be referring to the invention of Fig. 3～Fig. 7) provided, can finish the whole operations that to implement when the destination is not determined as yet selling in advance, in case with sell the destination relevant partly or the like be determined such as literal notation after, can utilize literal notation that the impregnation printing method will be relevant with the use language of selling the destination partly or the like, the end face that is marked at keycap is sentenced the whole operations of end, the button assembly so can in the shortest time after the sale destination is determined, complete, and can eliminate useless stock by pressing the order mode of production.

Even not adopting inherent colour is milky PBT resin, also can adopts as PET resin that is the transparent resins for universal use of hyaloid or POM resin and implement the impregnation printing.And PET resin or POM resin do not have problems aspect abrasion resistance properties fully, so no longer the protective layer such as UV cover layer or the like need be set at the key cap surface place.

If adopt the 6th form of implementation (can be referring to Fig. 3～Fig. 7), can also be by the mode of using with other combination of materials, to implementing compensation as the abrasion resistance properties of PC resin property defective and implementing impregnation and print, so also can implement the present invention effectively.

If adopt the 7th form of implementation (can be referring to the invention of Fig. 8～Fig. 9) provided, can finish the whole operations that to implement when the destination is not determined as yet selling in advance, in case with sell the destination relevant partly or the like be determined such as literal notation after, can utilize literal notation that the impregnation printing method will be relevant with the use language of selling the destination partly or the like, the end face that is marked at keycap is sentenced the whole operations of end, so the button assembly that can complete in the shortest time after the sale destination is determined.

And, can also make the PBT resin be relatively thinner film, or for adopting the relatively thinner film after the PS resin is implemented to dilute to the PBT resin, thereby can make as the milky of PBT resin inherent colour more weak, and can effectively utilize its impregnation and print applicable performance and abrasion resistance properties, the technique effect that can obtain to invent according to claim 1 thus.For this occasion, PBT resin film or do not had problems fully aspect the abrasion resistance properties by the film that the mixture of PBT resin and PC resin constitutes is so no longer need be provided with the protective layer such as UV cover layer or the like at the key cap surface place.

If adopt the 8th form of implementation (can be referring to the invention of Figure 10～Figure 14) provided, can be with the end face place of laser beam irradiation to keycap, all literal notations or the like as required are marked at can be by implementing the inner place of keycap that the colorific resin combination of laser beam irradiation constitutes, so can be not former thereby produce and to come off, to disappear owing to friction or the like, can realize good abrasion resistance properties.

And, can also finish the whole operations that to implement when the destination is not determined as yet selling in advance, in case with sell the destination relevant partly or the like be determined such as literal notation after, can utilize the mode of laser beam irradiation, will with numeral of using language independent or the like, with the literal notation relevant with the use language of selling the destination partly or the like, the end face that is marked at keycap is sentenced the whole operations of end, so the button assembly that can complete in the shortest time after the sale destination is determined.

(can be if adopt referring to the button assembly of the invention of Figure 15～Figure 17) provided as the 9th form of implementation, can be by using the mode of laser beam irradiation, all literal notations or the like as required are marked at the place, inside that keycap end face place is covered with the plural layers of keycap, so can be not former thereby produce and to come off, to disappear owing to friction or the like, can realize good abrasion resistance properties.

If adopt this manufacture method provided by the invention, can also finish in advance and sell the whole operations that to implement when the destination is determined as yet to form semi-finished product, in case with sell the destination relevant partly or the like be determined such as literal notation after, can be by using the mode of laser beam irradiation, all literal notations or the like as required are marked at the keycap end face sentence the whole operations of end, so the button assembly that can in the shortest time after the sale destination is determined, complete.

If adopt the tenth form of implementation (can be referring to the invention of Figure 18～Figure 21) provided, can be by spraying processing method, the end face of glass keycap with very good properties of transparency, case hardness and abrasion resistance properties is implemented mark processing, make such as literal notation or the like and show as the regular pattern that forms by trickle sags and crests set (wrinkle Zhe), thereby can produce the outward appearance that diffuse reflection forms create an aesthetic feeling to light beam, and to come off and extinction tests can not appear in this wrinkle Zhe regular pattern, can give play to good abrasion resistance properties.

If employing the present invention, can also finish the whole operations that to implement when the destination is not determined as yet selling in advance, in case with sell the destination relevant partly or the like be determined such as literal notation after, can utilize no mask-type to spray processing method, will with sell relevant being marked at glass keycap end face such as literal notation or the like and sentencing and finish whole operations in destination, so can sell the destination button assembly that complete in the shortest time after definite.

If adopt the 11 form of implementation (can be referring to the invention of Figure 18～Figure 21) provided, can be by spraying processing method, the end face of hard resin system keycap with very good properties of transparency, case hardness and abrasion resistance properties is implemented mark processing, make such as literal notation or the like and show as the regular pattern that forms by trickle sags and crests set (wrinkle Zhe), thereby can produce the outward appearance that diffuse reflection forms create an aesthetic feeling to light beam, and to come off and extinction tests can not appear in this wrinkle Zhe regular pattern, can give play to good abrasion resistance properties.

If employing the present invention, can also finish the whole operations that to implement when the destination is not determined as yet selling in advance, in case with sell the destination relevant partly or the like be determined such as literal notation after, can utilize no mask-type to spray processing method, will with sell relevant being marked at hard resin system keycap end face such as literal notation or the like and sentencing and finish whole operations in destination, so the button assembly that can in the shortest time after the sale destination is definite, complete.

Claims (17)

1. one kind is utilized laser beam that the keycap of light-transmission type material is implemented irradiation, to be marked at the labeling method of its inner usefulness such as literal notation or the like, it is characterized in that with wavelength be 1064nm (nanometer) following belong to the near infrared ray territory, the laser beam in luminous ray territory or near ultraviolet ray territory, focus to the inner needed position of keycap and implement intermittent irradiation, in the light-transmission type material, form the aggregate that forms by most trickle carbonization stains, or the aggregate that forms of the albefaction point that produces by most trickle explosions or foaming, adopt this mode to such as literal notation or the like enforcement represent.

2. labeling method according to claim 1, it is characterized in that above-mentioned laser beam for send by the Nd:YAG laser, be the light beam of 1064nm as the wavelength of basic wave, wavelength as second high frequency times ripple is the light beam of 532nm, is any in the light beam of 355nm as the wavelength of the 3rd high frequency times ripple.

3. keycap of making by the light transmission plastic material, it is characterized in that by with wavelength being the laser beam that belongs near infrared ray territory, luminous ray territory or near ultraviolet ray territory below the 1064nm, focus to the inner needed position of keycap and implement the mode of intermittent irradiation, make such as literal notation or the like to be, or the state that the set that forms of the albefaction point that is produced by explosion or foaming floats in the above-mentioned key cap material is implemented mark to it by most trickle carbonization stains.

4. button assembly manufacture method, it is characterized in that the keycap set that will implement mark light-transmission type material before is contained in the button assembly place, when finishing, interrupt or stop its making except the operation to this button assembly is implemented mark, when this button assembly is needed when being determined such as literal notation or the like content, will be marked at keycap such as literal notation or the like and sentence the button assembly that completes.

5. illuminated button assembly manufacture method, it is characterized in that when relative this resin system keycap is selling that the destination is determined as yet under the state that can implement, that comprise the whole operations end in being assembled in, interrupt or stop the making of button assembly, in case with sell the destination relevant partly be determined such as literal notation after, sentence the button assembly that completes by literal notation or the like the end face that is marked at keycap that the impregnation printing method will be relevant with the use language of sale destination.

6. button assembly manufacture method according to claim 5, it is characterized in that aforementioned resin is a kind of in polyethylene terephthalate (PET) resin or polyformaldehyde (POM) resin, and the end face of aforementioned resin system keycap is directly implemented impregnation printing operation relatively.

7. button assembly manufacture method according to claim 5 is characterized in that aforementioned resin is Merlon (PC) resin, after the surface of aforementioned resin system keycap is pre-formed the protection cover layer, implements impregnation again and prints.

8. button assembly manufacture method according to claim 5 is characterized in that aforementioned resin system keycap is the keycap that is made of the resin film lamination.

9. button assembly manufacture method according to claim 8, it is characterized in that the keycap that constitutes by the aforementioned resin pellicular cascade, it is the film that polybutylene terephthalate (PBT) resin is constituted, or the film that forms by the mixture of PBT resin and Merlon (PC) resin, be shaped to the 3D shape of keycap, side recess place is packed into other transparent resin within it, and the resin film surface of this keycap is implemented impregnation and printed and form relatively.

10. one kind is configured in keycap the button assembly that forms on the keyseat of being made by rubber or synthetic rubber, it is characterized in that this keycap forms according to the mode that has by by the colorific resin combination of laser beam irradiation, and, implement mark such as literal notation or the like to needed by with the mode of laser beam irradiation to its end face place.

11. one kind makes keycap is configured in keycap in the button assembly that forms on the keyseat of being made by rubber or synthetic rubber, form according to the mode that has by by the colorific resin combination of laser beam irradiation, and pass through the mode of laser beam irradiation to its end face place, to the needed button assembly manufacture method of implementing mark such as literal notation or the like, it is characterized in that determining as yet that in the sale destination time can implement, comprise under the state of the whole operations end in being assembled in, interrupt or stop the making of button assembly, in case with sell the destination relevant partly be determined such as literal notation after, by using laser beam that the keycap end face is implemented irradiation with to the mode such as literal notation or the like enforcement mark relevant with this destination, button assembly completes.

12. one kind has by light-transmission type rubber or the keyseat of hot plastic type synthetic rubber making and the illuminated button assembly of light-transmission type keycap, the surface that it is characterized in that this keycap can be covered with by the plural layers that laser beam irradiation is implemented to print, and by using laser beam its end face is implemented irradiation to implement mark to needed such as literal notation or the like.

13. one kind makes the key cap surface on the illuminated button assembly with the keyseat made by light-transmission type rubber or hot plastic type synthetic rubber and light-transmission type keycap, can be covered with by the plural layers that laser beam irradiation is implemented to print, and its end face is implemented irradiation with to the needed button assembly manufacture method of implementing mark such as literal notation or the like by using laser beam, it is characterized in that determining as yet that in the sale destination time can implement, comprise under the state of the whole operations end in being assembled in, interrupt or stop the making of button assembly, in case with sell the destination relevant partly be determined such as literal notation after, by using laser beam that the keycap end face is implemented irradiation with to the mode such as literal notation or the like enforcement mark relevant with this destination, button assembly completes.

14. one kind has by the keyseat of light-transmission type rubber or the making of hot plastic type synthetic rubber and the illuminated button assembly of the keycap that light-transmission type glass is made, it is characterized in that blowing at a high speed the mode at the end face place of the keycap that is attached to this glass making, implement mark such as literal notation or the like needed by particulate with grinding agent.

15. one kind by the particulate with grinding agent, blow at a high speed the mode at the end face place of the glass keycap that is attached to illuminated button assembly with keycap that the keyseat made by light-transmission type rubber or hot plastic type synthetic rubber and light-transmission type glass makes, to the needed button assembly manufacture method of implementing mark such as literal notation or the like, it is characterized in that determining as yet that in the sale destination time can implement, comprise under the state of the whole operations end in being assembled in, interrupt or stop the making of button assembly, in case with sell the destination relevant partly be determined such as literal notation after, by directly the particulate of grinding agent being blown the no mask injection processing mode at the end face place of the keycap that is attached to the glass making at a high speed, this literal mark or the like is implemented mark, and button assembly completes.

16. one kind has by the keyseat of light-transmission type rubber or the making of hot plastic type synthetic rubber and the illuminated button assembly of the keycap that the light-transmission type hard resin is made, it is characterized in that blowing at a high speed the mode at the end face place of the keycap that is attached to this hard resin making, implement mark such as literal notation or the like needed by particulate with grinding agent.

17. one kind by the particulate with grinding agent, blow at a high speed the mode at the end face place of the hard resin system keycap that is attached to illuminated button assembly with keycap that the keyseat made by light-transmission type rubber or hot plastic type synthetic rubber and light-transmission type hard resin make, to the needed button assembly manufacture method of implementing mark such as literal notation or the like, it is characterized in that determining as yet that in the sale destination time can implement, comprise under the state of the whole operations end in being assembled in, interrupt or stop the making of button assembly, in case with sell the destination relevant partly be determined such as literal notation after, by directly the particulate of grinding agent being blown the no mask injection processing mode at the end face place of the keycap that is attached to aforementioned hard resin making at a high speed, this literal mark or the like is implemented mark, and button assembly completes.

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