CN102529417B - Thermal head system and electrifying control method for thermal head - Google Patents
Thermal head system and electrifying control method for thermal head Download PDFInfo
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- CN102529417B CN102529417B CN201110325725.4A CN201110325725A CN102529417B CN 102529417 B CN102529417 B CN 102529417B CN 201110325725 A CN201110325725 A CN 201110325725A CN 102529417 B CN102529417 B CN 102529417B
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Abstract
The utility model relates to a thermal head system and an electrifying control method for thermal head. Without carrying out resistance measurement and complicated electrifying control amid driving process and without increasing reconditioning amount, the thermal head system can inhibit the unevenness of the heating characterisitcs of the heating resistor element. For this purpose, the thermal head system does not carry out electrifying control which takes every heating resistor element as the unit and corresponds to the difference between the resistance value of multiple heating resistor elements and the mean resistor value. Instead, the thermal head system carries out the electrifying control which takes heating resistor element of the unit block as a unit and corresponds to the difference between the average resistor value of the heating resistor elements of the unit blocks and the target resistance. Therefore, the thermal head system can make the heating resistor elements to heat in a state that the amplitude of variation is smaller than that of the previous ones.
Description
Technical field
The present invention relates to a kind of system and method that the energising amount of hot the heating resistive element having is controlled, this heat head is for example the platemaking mechanism of the thermosensitive porous plate printing body paper in hole plate print device etc., applies voltage and makes each heating resistive element heating being arranged with the heating resistor of multiple heating resistive elements.
Background technology
In the past, in hole plate print device, as the device that uses thermosensitive porous plate printing body paper, mainly contained cycle type hole plate print device and simple and easy push type hole plate print device.These printing equipments use (thermosensitive porous plate printing with) body paper for plate for thermal sensitive porous printing, the bonding thermoplastic resin film of boring a hole by heat fusing of this former adhesive for paper and forming as the thin coil paper of porous of the supporter of this film etc.Use this body paper of heat head heating, its non-blank-white portion corresponding to printing images is perforated, makes a plate thus, by aliging and pressing body paper and the printing after plate-making, the China ink going out from the supporter side pressure of body paper is transferred on printing by the hole of opening at film, thereby prints.
Generally speaking, heat head has linearity and is arranged with the heating resistor of multiple heating resistive elements, for by optionally driving heating resistive element on body paper the non-blank-white portion to desirable printing images bore a hole.But, in above-mentioned heat head, there is following problems: because the resistance value of each heating resistive element does not equate entirely, the distribution that therefore produces caloric value in head, causes image color inequality or point to omit (puncherless).In order to address this problem, to propose to revise corresponding to the difference of resistance value each heating resistor in the past and driven.
For example, in the disclosed technology of patent document 1, have: the measuring unit of the resistance value of the multiple heating resistive elements of measure setup in heat head respectively; And for to make the caloric value of each heater element substantially even, based on the resistance value of measuring, adjust respectively the adjustment unit of the conduction time of each heater element.Thus, the caloric value of each heater element of heat head equates, can carry out high-precision printing.
In the disclosed technology of patent document 2, the electrical pulse of supplying with each heating resistive element is divided into the multiple editing pulses for each heating resistive element respectively, meanwhile, the resistance value based on each heater element is controlled respectively the pulse width of each editing pulse of supplying with each heating resistive element.Thus, make the peak temperature of each heating resistive element that resistance value is different identical with thermal response characteristics, uniformly, do not record uneven printing thereby can carry out temperature.
In the disclosed technology of patent document 3, the difference of the caloric value when each heating resistive element is switched on identical energising amount, make and offset this different contrary caloric value distribution map as revising data, taking piece as the each heating resistive element of unit predrive, then optionally formally drive heating resistive element to carry out record according to the caloric value distribution map of these correction data.Thus, can make the caloric value of heating resistive element even, prevent that record is uneven.
But, in above-mentioned patent document 1 and 2 there is following problems in disclosed technology: while driving hot at every turn, resistance value to each heating resistive element is measured, need to adjust respectively the device of the conduction time of heating resistive element, the pretreatment such as the measurement of resistance value need the time, and the device that need to be used for measuring, thereby the structure of system and control become complicated.
In addition, in patent document 3 there is following problems in disclosed technology: while driving hot at every turn, need to after the each heating resistive element of unit predrive, formally drive taking piece, this need to carry out predrive and formal two stages that drive drive the device of controlling, thereby the structure of system and control become complicated.
And, in patent document 1 to 3 disclosed technology, resistance value based on whole heating resistive elements and the difference of its mean value are controlled the powered-on mode of the conduction time of each heating resistive element or the heating resistive element of block unit, thereby the energising amount of heating resistive element and the energising amount of other heating resistive element that need to make resistance value and average electrical resistance differ larger have a great difference.Therefore, there is the problem that makes the aging generation relatively big difference of heating resistive element due to the difference of total energising amount.
Cited paper:
Patent document 1: TOHKEMY 2001-232840 communique
Patent document 2: TOHKEMY 2000-158691 communique
Patent document 3: Japanese kokai publication hei 8-300708 communique
Summary of the invention
But, in the time of factory shipment heat, in order to make the resistance value of heat head even, each heating resistive element is implemented to finishing (trimming) and processes.The resistance value of switching on to change heating resistive element by heating resistive element is carried out to multiple pulses is processed in this finishing.
Generally speaking, for by owing to heating resistive element being carried out to structural deteriorated control that pulse electrifying causes for minimum, the roughly uniform degree of resistance value of conventionally just processing to making each heating resistive element is processed in finishing.Then, the homogenising of remaining small electric resistance is normally controlled to carry out by the driving of above-mentioned heat head.
Therefore,, for fear of the driving control of above-mentioned heat head, need to increase trim amount compared with general quantity and realize the homogenising of the resistance value of each heating resistive element.But like this, heating resistive element may produce because the increase of trim amount makes structural degradation and become large, thus lifetime.
The present invention In view of the foregoing proposes, the object of the present invention is to provide the conduction control method of a kind of hot head system and heat head, this hot head system comprises the device that has linearity and be arranged with the heat head of multiple heating resistive elements, in the time driving hot, do not carry out the processing such as measurement or complicated energising control of the resistance value of heating resistive element, do not reduce because the increase of trim amount causes durability, and can suppress the difference of the heat generation characteristic of each heating resistive element.
To achieve these goals, a first aspect of the present invention provides a kind of hot head system,
Described hot head system has the linearly heating resistor that is arranged with multiple heating resistive elements, for by described heating resistor being switched on to make the heating of each heating resistive element,
Described heating resistor is divided into multiple units chunk by bearing of trend along described straight line, and constituent parts piece is made up of the described heating resistive element of predetermined quantity respectively,
Described hot head system comprises:
Energising amount storage part, its by described constituent parts piece store respectively that caloric value is consistent with predetermined target caloric value in order to make to add up to, the average electrical resistance of heating resistive element based on described predetermined quantity calculates with differing from of target resistance values, the energising amount relevant with the heating resistive element of described predetermined quantity, wherein, described total caloric value is the total caloric value to heating resistive element when energising using the average electrical resistance of the heating resistive element of described predetermined quantity as the described predetermined quantity of resistance value;
Energising amount control part, for in the time driving described heat, by each described constituent parts piece, drive respectively the heating resistive element of the described predetermined quantity of this units chunk with the energising amount of being stored in corresponding with described units chunk, described energising amount storage part, so that the total caloric value of this units chunk is identical with the total caloric value of other units chunk.
In addition, to achieve these goals, a second aspect of the present invention provides a kind of conduction control method of heat head,
This heat head has the linearly heating resistor that is arranged with multiple heating resistive elements, for by described heating resistor being switched on to make the heating of each heating resistive element,
Described heating resistor is divided into multiple units chunk by bearing of trend along described straight line, and constituent parts piece is made up of the described heating resistive element of predetermined quantity respectively,
Described conduction control method comprises:
In order to make to add up to caloric value consistent with predetermined target caloric value, the average electrical resistance of the heating resistive element based on described predetermined quantity and target resistance values poor, pre-determine respectively the energising amount relevant with the heating resistive element of described predetermined quantity by described constituent parts piece, wherein, described total caloric value is the total caloric value to heating resistive element when energising using the average electrical resistance of the heating resistive element of described predetermined quantity as the described predetermined quantity of resistance value;
In the time driving described heat, drive with heating resistive element corresponding with described constituent parts piece, the described predetermined quantity of predetermined energising amount to described constituent parts piece respectively, so that the total caloric value of this units chunk is identical with the total caloric value of other units chunk.
The resistance value control method of the heat head of the present invention that the system for controlling resistance value of the heat head of the present invention of recording by first aspect and second aspect are recorded, about the multiple units chunk that on the bearing of trend of straight line, the linearly heating resistor that is arranged with multiple heating resistive elements are divided into, distinguish during fabrication the average electrical resistance of the heating resistive element of predetermined quantity in measurement unit's piece.
In addition, average electrical resistance based on measured and target resistance values poor, respectively constituent parts piece is pre-determined the following energising amount of the heating resistive element of predetermined quantity, the total caloric value when heating resistive element that it is the predetermined quantity of average electrical resistance that this energising amount makes resistance value is switched on is consistent with predetermined target caloric value.
And, in the time driving hot, respectively the predetermined energising amount of units chunk is driven multiple heating resistive elements of constituent parts piece.
Therefore, in constituent parts piece, the resistance value of supposing the heating resistive element of predetermined quantity is all their average electrical resistance, with the total caloric value of heating resistive element of these predetermined quantities energising amount identical with the total caloric value of other units chunk, drive the heating resistive element of predetermined quantity.The conduction time of the units chunk that units chunk that thus, average electrical resistance is low is higher than average electrical resistance is short.
The total caloric value of constituent parts piece at this moment, with in the case of the average electrical resistance of supposition constituent parts piece each be that target resistance values, the total caloric value during to the logical same time of constituent parts piece electric equates.
Therefore,, in the time driving hot, the average electrical resistance of the heating resistive element of the predetermined quantity of constituent parts piece is the state that seems evenly to turn to target resistance values.In addition, the resistance change amplitude of each heating resistive element of the heating resistor using this target resistance values as benchmark, than using little as the amplitude of variation of benchmark the average electrical resistance of whole heating resistive elements of heating resistor.
Therefore, with so that the energising amount that all caloric value of heating resistive elements is consistent with target caloric value while driving each heating resistive element compared with, the amplitude of variation of the energising amount of each heating resistive element is diminished, can make aging inhomogeneous the diminishing that differs from the heating resistive element causing due to total energising amount.
In addition,, without in each processing of carrying out measurement or the complicated energising control etc. of the resistance value of heating resistive element while driving heat, therefore can realize the simplification of control method and control structure.
And, even if do not increase the trim amount in finishing processing, also can control the inhomogeneous of resistance value of each heating resistive element substantially reduced by energising, therefore, can prevent the reduction of the durability of the heating resistive element causing due to the increase of trim amount.
Brief description of the drawings
Fig. 1 is the general profile chart that the internal structure of the hole plate print device of the one embodiment of the present invention that is suitable for hot head system of the present invention and a heat conduction control method is shown.
(a) in Fig. 2 is the plane that the hot head unit of present embodiment is shown, (b) in this figure is the side view that the hot head unit of (a) is shown.
(a) in Fig. 3 is the plane of schematically illustrated heat head, and (b) in this figure is the X-X cutaway view of (a), (c) is the figure that schematically shows the quantity of heating resistive element.
Fig. 4 is the block diagram that the energising amount controlling organization of present embodiment is shown.
Fig. 5 is the different figure that the resistance value of the each heating resistive element of present embodiment is shown.
Fig. 6 illustrates the figure that processes the trim amount when resistance value of each heating resistive element is evenly turned to common target resistance values by finishing.
Fig. 7 is the process chart that the manufacture method of the heat head of present embodiment is shown.
Fig. 8 is the cutaway view that the process of the manufacturing process of the heat head of present embodiment was shown by the stage.
Detailed description of the invention
Describe embodiments of the present invention in detail below in conjunction with accompanying drawing.In the present embodiment, so that the conduction control method of hot head system of the present invention and heat head is described by the situation of the platemaking mechanism of body paper as an example for the thermosensitive porous plate printing of hole plate print device.Note, in the present embodiment, the situation for the platemaking mechanism of body paper by the present invention has been described, but the invention is not restricted to this, in addition, can also be used for such as heat-sensitive type tape deck or thermal transfer printing system etc. and apply to being arranged with the heating resistor of heating resistive element whole devices that voltage generates heat each heating resistive element.
(overall structure of hole plate print device)
Fig. 1 is the general profile chart that the internal structure of the hole plate print device 1 of present embodiment is shown.In Fig. 1, hole plate print device 1 is mainly made up of original copy reading mechanism 2, platemaking mechanism 3, printing mechanism 4, paper feeding mechanism 5, paper-discharge mechanism 6, version output mechanism 7 and the control part 8 of controlling above-mentioned each mechanism.
Printing mechanism 4 has edition body 16 and pressure roll 17, and it is slightly close that this edition body 16 and pressure roll 17 are set to the part of mutual outer peripheral face, and can rotate freely separately.The outer peripheral face of version body 16 is provided with body paper clamping section 18, by the front end of these body paper clamping section 18 holes for clamping body papers.In addition, be provided with the compression roller 47 as outside pressure exerting arrangement in the position relative with pressure roll 17 of version body 16 inner peripheral surfaces.In addition, form opening surface (effectively printing surface) at the outer peripheral face of version body 16, on this opening surface, be formed with a large amount of holes, by this opening surface, supply with China ink to outside from the inside of version body 16.In addition,, at outer peripheral face package porous body paper, in the China ink between the opening portion and the porous body paper that are supplied to outer peripheral face, China ink is only supplied to outside from the perforation face of porous body paper.
Paper feeding mechanism 5 has: paper feeding platform 23, its stacked multiple printings 22 as printed medium; Scraping portion 24, the printing 22 of the uppermost position in fig-ure of this paper feeding platform 23 of its crimping; Pick-up roller 25, it is configured in the downstream of this scraping portion 24, and is positioned at slightly close position mutually; Guide reel 27 and timing roller 28, they are configured in the downstream of this pick-up roller 25, and are positioned at slightly close position mutually.The printing of being supplied with by paper feeding platform 23 pulls out by scraping portion 24, sends to pick-up roller 25.Paper-discharge mechanism 6 has: paper strips pawl 32, and it strips the printing 22 printing from version body 16; Paper transport mechanism 33, the printing 22 that its conveyance strips; And stack portion 34, it loads the printing 22 being come by these paper transport mechanism 33 conveyances with stacked state.
Version output mechanism 7 has: version is discharged steering tape 35, the front end of the porous body paper 15 that its guiding discharges from the body paper clamping section 18 of version body 16; Version distributing roller 36, the porous body paper 15 that it guides this edition discharge steering tape 35 is peeled off and is batched recovery on one side from version body 16 on one side; Contamination preventing guide portion 38, its at porous body paper 15 when version prevent porous body paper 15 contact version distributing rollers 36; Version is discharged case 37, and it holds the porous body paper 15 being reclaimed by version distributing roller 36.
Original copy reading mechanism 2 is that scioptics or the CCD etc. such as scanner read original copy optically, the mechanism then exporting as the signal of telecommunication.The instruction (expand, dwindle etc.) of the information reading based on predetermined and processed, and deliver to platemaking mechanism 3.Platemaking mechanism 3 is mechanisms that the signal of telecommunication that reads based on original copy reading mechanism 2 is made a plate to strip body paper 10, and it has: hot head unit 12, and it is configured in the downstream of the conveyance direction of the strip body paper 10 being wound on roller; Air roll 13, it configures facing to this hot head unit 12; And body paper cutting knife 14, it is configured in the downstream of the conveyance direction of strip body paper 10.
(structure of heat head)
(a) in Fig. 2 is the plane that hot head unit 12 is shown, (b) in this figure is the side view that the hot head unit 12 of (a) is shown.As Fig. 2 (a) and (b), hot head unit 12 has substrate 20.Side below substrate 20, is provided with aluminium heat liberation board 121 and connecting portion 122.At the upper face side of substrate 20, by nut 124, IC lid 123 is installed.On the top of substrate 20, form hot 70.
(a) in Fig. 3 schematically shows the plane of hot 70, and (b) in this figure is the X-X cutaway view of (a), (c) is the figure that schematically shows the quantity of heating resistive element.As Fig. 3 (a) and (b), hot 70 has the insulating properties substrate body 56 being made up of aluminium oxide ceramics as base portion, and the upper surface of this substrate body is coated with the glaze layer 57 of glass system.
On glaze layer 57, along main scanning direction, be formed on protrusion 57a linearly in plan view, the outline that this protrusion 57a is formed as its cross section is slightly circular-arc.The curved surface top of the protrusion 57a of this glaze layer 57 is provided with heating resistor 72.This heating resistor 72 is by forming with predetermined space the multiple heating resistive element 721～72n that are made up of film along the linearly arrangement of main scanning direction.In the present embodiment, heating resistive element 721～72n arranges 3600 left and right as shown in Fig. 3 (c).
In addition, in the both sides of the sub scanning direction of heating resistor 72, the conductive layer 64a, the 64b that are made up of aluminium of thickness approximately 0.6 μ m etc. are electrically connected with each heating resistive element 721～72n respectively, and on glaze layer 57 film forming.In addition,, in hot 70, form the protective layer 58 that heating resistor 72 is covered together with each conductive layer 64a, 64b.In addition, in the two ends of heating resistor 72 configuration public electrode portion 66,66.
As shown in Fig. 3 (a), heating resistive element 721～72n arranges with predetermined space at the length direction (main scanning direction) of hot 70, optionally it is applied to voltage, to control respectively its heating.Conductive layer 64a, 64b are made up of the duplexer of the metals such as silver (Ag), gold (Au), copper (Cu), nickel (Ni), tungsten (W), aluminium (Al), platinum (Pt) or the alloy taking them as main component or these metals and alloy.The protective layer 58 of the superiors covers public electrode portion 66 and conductive layer 64a, 64b and heating resistor 72 and film forming.
(energising amount controlling organization)
The driving control of heat head of the present invention is undertaken by above-mentioned control part 8.Fig. 4 illustrates to drive the block diagram of controlling related mechanism.Note, " module " that in explanation, use represents by installing or the hardware of equipment etc. or software or their combination etc. with its function form, for realizing the functional unit of predetermined action.
As shown in Figure 4, control relevant module as the driving of heating resistive element 721～72n, control part 8 has energising amount control part 81 and revises data store 84.This control part 8 connects the user interface of external interface 83 and guidance panel 80, the operation signal of the signal of the external equipment that input connects from external interface 83 or the operation of the user based on from guidance panel 80.In addition, this control part 8 is sent the control signal of the driving for controlling plate-making to the drive circuit 30 of platemaking mechanism 3 and heat 70 grade.
Control part 8 is controlled respectively the heating resistive element 721～72n of heating resistor 72 by each units chunk.Constituent parts piece is by heating resistive element 721～72n is divided into a cutting part in multiple and forms each heating resistive element with predetermined quantity in its direction arranged in a straight line.
The arithmetic processing apparatus that energising amount control part 81 carries out various calculation process by such as CPU etc. is realized, at this, the module with following function: in the time making a plate action, in the time driving hot 70, read correction data from revising data store 84, make each heating resistive element 721～72n heating by the energising amount corresponding with read correction data.In present embodiment, by controlling adjusting energising amount the conduction time of heating resistive element 721～72n, make the energising amount difference of each heating resistive element 721～72n.Note, as the adjustment of energising amount, except controlling conduction time, can also control voltage or electric current and make energising amount difference.
This energising amount control part 81 connects revises data store 84, and correction data store 84 is stored the correction data of the each units chunk in above-mentioned constituent parts piece.In constituent parts piece, the ident value of the constituent parts piece of the correction data of each units chunk based on inputting from ident value storage part 9 by exterior I/F (interface) 83 makes.In ident value storage part 9, store the average electrical resistance of the heating resistive element 721～72n that belongs to constituent parts piece as the ident value of constituent parts piece.The ident value (belonging to the average electrical resistance of the heating resistive element 721～72n of constituent parts piece) of constituent parts piece, based on making manufacturing the resistance value of a heat each heating resistive element 721～72n being measured by outside resistance measurement device (not shown) at 70 o'clock.
Differing between the ident value (belonging to the average electrical resistance of the heating resistive element 721～72n of constituent parts piece) of the each units chunk in the constituent parts piece of correction data based on being stored in ident value storage part 9 and predeterminated target resistance value calculates, constituent parts piece data separately.And the correction data of constituent parts piece are the data that the energising amount of the heating resistive element 721～72n to belonging to units chunk is revised.Making of these correction data can be undertaken by ident value storage part 9, and calculation process module that also can operative installations 1 is carried out.
(revising making of data)
While then manufacturing above-mentioned heat with reference to figure 5 explanations, revise making of data.First, the heating resistive element 721～72n of present embodiment has the amplitude of variation W1 of the resistance value shown in Fig. 5 (a).
At this, in order to control the energising amount of heating resistive element 721～72n, make the resistance value of each heating resistive element 721～72n substantially consistent with the average electrical resistance of average all resistance values of heating resistive element 721～72n, thereby make the caloric value of each heating resistive element 721～72n consistent, will produce at least one following heating resistive element, this heating resistive element need to be equivalent to revise with amplitude more than W1/2 the correction of resistance value with respect to common energising amount.
In the energising control of unanimously carrying out in the caloric value in order to make the heating resistive element 721～72n in this amplitude of variation W1 with different resistance values, there is following problems: the device that need to adjust respectively the conduction time of heating resistive element 721～72n, the pretreatment such as the measurement of resistance value need the time, and the device that need to be used for measuring, it is complicated that the structure of system and control become.In addition, increase the heating resistive element 721～72n of the energising control of energising amount for needs, compared with not carrying out other heating resistive element 721～72n of such energising control, because the difference of total energising amount causes the aging difference of heating resistive element larger.
But, if make the resistance value of whole heating resistive element 721～72n consistent with certain target resistance values respectively by the increase and decrease of trim amount, as shown in Figure 6, for the many heating resistive element 721～72n of trim amount, compared with the heating resistive element 721～72n few with trim amount, structural degradation is larger, and the life-span is shorter.
On the other hand, for example, as shown in Fig. 5 (b), if whole heating resistive element 721～72n are divided into four units chunk, obtain respectively the average electrical resistance of the heating resistive element 721～72n that belongs to constituent parts piece, the amplitude of variation W2 between the average electrical resistance of constituent parts piece becomes than the little amplitude of amplitude of variation W1 shown in Fig. 5 (a).
Therefore, in the present embodiment, suppose for the heating resistive element 721～72n of predetermined quantity that belongs to constituent parts piece, obtain average electrical resistance according to the actual resistance of these heating resistive elements 721～72n, determine following energising amount for constituent parts piece, this energising amount is the predeterminated target caloric value as the total caloric value of the heating resistive element of these predetermined quantities.Then, thereby will drive the correction data of the heating resistive element of the predetermined quantity of corresponding units chunk with the energising amount being determined for standard energising amount is modified to determined energising amount, be stored in and revise in data store 84 as the correction data of constituent parts piece.
The energising of crossing with the correction data correction of the constituent parts piece that determined is like this measured, drive respectively the heating resistive element 721～72n of the predetermined quantity of corresponding units chunk, thus, the equal state heating of each heating resistive element 721～72n that as shown in Figure 5, can make heating resistor 72 taking the average electrical resistance of the heating resistive element 721～72n of constituent parts piece as same resistance value.
Note, above-mentioned target resistance values can be for example median of the average electrical resistance of four units chunk, or four average electrical resistances resistance value after further average.In addition, can determine like this target resistance values, make the maximum minimum of the difference of itself and average electrical resistance.
Next,, for the energising control that contains the constituent parts piece heating resistive element 721～72n being undertaken by the correction data that said method determines, from the process that is fabricated onto driving of hot 70, describe with reference to the process chart of figure 7 and the cutaway view of Fig. 8.
As shown in the figure, first, in the production process of the glaze laminar substrate of step S101, as shown in Fig. 8 (b), in the substrate body 56 shown in Fig. 8 (a), by serigraphy etc., form glaze layer 57.At this moment,, on glaze layer 57, form the linearly slightly circular-arc protrusion 57a of outline.Then,, as shown in Fig. 8 (c), in the heating resistive element film formation process of step S102, on glaze layer 57, form heating resistor 72.The formation of this heating resistor 72 is for example used the film such as vacuum evaporation or sputter formation technology.Then, in the light printing and etching work procedure of step S103, print and etching by light, the heating resistive element 721～72n of film forming is if the length direction of Fig. 3 (a) glaze layer 57 that is shown in is with being spaced of being scheduled to.
Then,, in the electrode layer film formation process of step S104, as shown in Fig. 8 (d), on whole on heating resistor 72, form the conductive layer 64 of wishing thickness.Conductive layer 64 can form by film formation technology such as sputters, also can form by silk-screen printing technique.Next, in the light printing and etching work procedure of step S105, carry out pattern formation by light printing and etching, remove the conductive layer 64 in desirable region.More specifically, as shown in Fig. 3 (a), at the length direction of hot 70, by the top area that is spaced and exposes heating resistor 72 to be scheduled to, remove conductive layer 64.By this operation, conductive layer 64 is separated into the first conductive layer 64a of public electrode portion 66 sides and the second conductive layer 64b of opposition side by electricity.Afterwards, form in operation at the diaphragm of step S106, as shown in Fig. 8 (e), form protective layer 58 in the superiors.
Then, carry out heat treated below.Particularly, in the annealing in process operation of step S107, heating heating resistor entirety.By this annealing in process, eliminate local-crystalized uneven that heating resistor 72 produces in manufacture process, owing to having improved the crystallinity of whole heater elements of heating resistor 72, therefore make the membrane structure of heating resistive element 721～72n stable.After this annealing in process, in the finishing process of step S108, repair the resistance value of each heating resistor 72 of adjusting made.
In this finishing is processed, for the heating resistive element 721～72n that forms each pixel, by carry out multiple pulses energising between conductive layer 64a and 64b, the resistance value of heating resistive element 721～72n is changed, and the resistance value by heating resistor 72 on each point is adjusted to desirable resistance value.Note, in the present embodiment, in this step S108, the degree of irregularity of resistance value (distribution range of resistance value) significantly can be tapered to the degree shown in Fig. 5 (a).
Then, completing like this after finishing processing, next, carry out the measurement (step S109) of the resistance value of heating resistor 72, calculate the average electrical resistance (S110) of each units chunk.Note, in the present embodiment, as shown in Fig. 3 (c), heating resistive element 721～72n has 3600, and its quartering is formed to units chunk.But the isodisperse of heating resistive element 721～72n is not limited to the quartering, but can be any.For example, can first set the object variations amplitude of the resistance value of the heating resistive element 721～72n in units chunk, the scope that this amplitude of variation is covered, as a units chunk, determines the quantity of the heating resistive element 721～72n in units chunk thus.
Next, according to calculated average electrical resistance, make respectively according to method described above the correction data (S111) that energising control constituent parts piece, that make average electrical resistance that constituent parts piece calculates be essentially predeterminated target resistance value is used in the time recording.Note, in the present embodiment, this target resistance values is the minimum in the average electrical resistance of each, is 2040 Ω here.
Afterwards, the correction data that make send to hole plate print device 1 by the external interface 83 of control part 8 from ident value storage part 9, are stored in and revise in data store 84.Note, revise making by ident value storage part 9 of data here and undertaken, but also can use the calculation process module of hole plate print device 1 to carry out.
(plate-making action)
The plate-making action of the hole plate print device 1 with above structure then, is described.
First, in platemaking mechanism 3, the rotation that feeds roller by air roll 13 and body paper carrys out conveyance strip body paper 10, and thermotropism head unit 12 is sent.In hot head unit 12, the image information reading based on original copy reading mechanism 2, each heating resistive element 721～72n of hot 70 optionally generates heat, and thus to the 10 temperature-sensitives perforation of strip body paper, thereby porous body paper 15 is made a plate.
At this moment, in the time driving hot 70, read correction data from revising data store 84, in energising amount control part 81, by the energising amount being adjusted into conduction time corresponding to read correction data, make each heating resistive element 721～72n heating.Particularly, revising data makes like this: in the manufacture process of heat head, based on by the resistance value of resistance measurement measurement device, calculate the average electrical resistance of each units chunk, make calculated average electrical resistance become predetermined target resistance values, make taking units chunk as unit.
Energising amount control part 81 is resolved the view data that original copy reading mechanism 2 reads in, and for the non-blank-white portion corresponding to printing images bores a hole, with the energising amount corresponding to each pixel, calculates the conduction time of each pixel.At this moment,, with reference to revising data, corresponding to the resistance value of each heating resistive element 721～72n, make conduction time flexible.Particularly, resistance value (Fig. 5 (a)) based on being measured in manufacture process by resistance measurement device, calculate the average electrical resistance (Fig. 5 (b)) of each units chunk, driving heat 70 o'clock, for the average electrical resistance that makes constituent parts piece all becomes consistent with predeterminated target resistance value in fact state, the energising amount taking units chunk as the each heating resistive element 721～72n of unit correction.Note, this target resistance values is the minimum in the average electrical resistance of each, and in the present embodiment, target resistance values is 2040 Ω.
Therefore, carry out respectively as benchmark in the average electrical resistance taking whole heating resistive element 721～72n in the energising control of each heating resistive element 721～72n (Fig. 5 (a)), to revise the size of more than ± 5% resistance change amplitude W1, produce the inhomogeneous of energising amount correction amplitude.On the other hand, pass through present embodiment, switch on control to belonging to the heating resistive element unification of this units chunk in the case of the average electrical resistance in order to make each units chunk is consistent with target resistance values, the inhomogeneous size that is limited in the average electrical resistance amplitude of variation W2 that revises constituent parts piece of energising amount correction amplitude, therefore present embodiment is little.
In addition, according to this revised conduction time, heated by heat head, bore a hole corresponding to the non-blank-white portion of printing images, thereby make a plate.Note, in the time that printing drives, use the body paper clamping section 18 of version body 16 to clamp the front end of the porous body paper 15 after plate-making, under the state of this clamping, version body 16 rotates that porous body paper 15 is reeled and is arranged on the outer peripheral face of edition body 16.Then, printing 22 is together pressed with version body 16 and porous body paper 15 between compression roller 47 and pressure roll 17, and on printing 22, transfer printing is from the China ink of the perforated portion of porous body paper 15, with printing images.
(effect)
Manufacturing heat 70 o'clock, calculate the average electrical resistance of the resistance value of each heating resistive element 721～72n, make the correction data that the energising amount of paired each heating resistive element 721～72n is revised respectively by constituent parts piece, make the state that becomes predetermined target resistance values with the average electrical resistance of the heating resistive element 721～72n of constituent parts piece make heating resistive element 721～72n heating of constituent parts piece.In addition, driving heat 70 o'clock, for example, corresponding to these correction data increases and decreases (stretching) energising amount (, conduction time) to each heating resistive element 721～72n.Therefore, demand motive heat is not measured the resistance value of heating resistive element 721～72n at 70 o'clock and is controlled the processing such as conduction time, can avoid the driving time that causes due to pretreatment elongated, avoid system and control complexity, and avoid occurring image color inequality or put and omit (puncherless).
In addition, pass through present embodiment, manufacturing heat 70 o'clock, multiple heating resistive element 721～72n are divided into predetermined units chunk, and measure the resistance value of constituent parts piece, calculate to each units chunk average electrical resistance, increase and decrease (stretching) energising amount (for example, conduction time) to each heating resistive element 721～72n for making the average electrical resistance of the piece under each element become predetermined target resistance values.Therefore,, with compared with the average electrical resistance of whole heating resistive element 721～72n is during as benchmark, can suppress for by a small margin control the resistance change amplitude of revising by energising amount.Particularly, in the average electrical resistance taking whole heating resistive element 721～72n as benchmark, as shown in Fig. 5 (a), the energising amount control of need to revise ± more than 5% resistance change amplitude W1, but in the present embodiment, as shown in Fig. 5 (b), revise the small size energising amount control of the amplitude of variation W2 degree of the average electrical resistance of constituent parts piece.
In addition, by such correction energising amount, can make the average electrical resistance of constituent parts piece become substantially and the resistance value state that all identical state is identical, therefore, can be by the amplitude of variation of the resistance value of each heating resistive element 721～72n in whole heating resistor 72, be suppressed at maximum in the amplitude of variation W3 of the average electrical resistance of constituent parts piece and the resistance value of heating resistive element 721～72n below ± 3%.
Thus, the trim amount while not increasing factory's manufacture, can be in the variation of resistance value that suppresses each heating resistive element 721～72n, the variation of correction while suppressing to drive.
Description of reference numerals
1 hole plate print device
2 original copy reading mechanisms
3 platemaking mechanisms
4 printing mechanisms
5 paper feeding mechanisms
6 paper-discharge mechanisms
7 editions output mechanisms
8 control parts
9 ident value storage parts
10 strip body paper
12 hot head units
13 air rolls
14 body paper cutting knifes
15 porous body papers
16 editions bodies
17 pressure rolls
18 body paper clamping sections
20 substrates
22 printings
23 paper feeding platforms
24 scraping portions
25 pick-up rollers
27 guide reels
28 timing rollers
30 drive circuits
32 paper strip pawl
33 paper transport mechanisms
34 stack portion
Discharge steering tape for 35 editions
36 editions distributing rollers
Discharge case for 37 editions
38 contamination preventing guide portion
47 compression rollers
56 substrate body
57 glaze layers
57a protrusion
58 protective layers
64 conductive layers
64a the first conductive layer
64b the second conductive layer
66 public electrode portions
70 hot heads
72 heating resistors
80 guidance panels
81 energising amount control parts
83 external interfaces
84 revise data store
121 aluminium heat liberation boards
122 connecting portions
124 nuts
721～72n heating resistive element
The amplitude of variation of W1, W2, W3 resistance value
Claims (2)
1. a hot head system, has the linearly heating resistor that is arranged with multiple heating resistive elements, for by described heating resistor being switched on to make the heating of each heating resistive element,
Described heating resistor is divided into multiple units chunk by bearing of trend along described straight line, and constituent parts piece is made up of the described heating resistive element of predetermined quantity respectively,
Described hot head system comprises:
Energising amount storage part, its by described constituent parts piece store respectively that caloric value is consistent with predetermined target caloric value in order to make to add up to, the average electrical resistance of heating resistive element based on described predetermined quantity calculates with differing from of target resistance values, the energising amount relevant with the heating resistive element of described predetermined quantity, wherein, described total caloric value is the total caloric value to heating resistive element when energising using the average electrical resistance of the heating resistive element of described predetermined quantity as the described predetermined quantity of resistance value;
Energising amount control part, for in the time driving described heat, by each described constituent parts piece, drive respectively the heating resistive element of the described predetermined quantity of this units chunk with the energising amount of being stored in corresponding with described units chunk, described energising amount storage part, so that the total caloric value of this units chunk is identical with the total caloric value of other units chunk.
2. a conduction control method for heat head, this heat head has the linearly heating resistor that is arranged with multiple heating resistive elements, for by described heating resistor being switched on to make each heating resistive element heating,
Described heating resistor is divided into multiple units chunk by bearing of trend along described straight line, and constituent parts piece is made up of the described heating resistive element of predetermined quantity respectively,
Described conduction control method comprises:
In order to make to add up to caloric value consistent with predetermined target caloric value, the average electrical resistance of the heating resistive element based on described predetermined quantity and target resistance values poor, pre-determine respectively the energising amount relevant with the heating resistive element of described predetermined quantity by described constituent parts piece, wherein, described total caloric value is the total caloric value to heating resistive element when energising using the average electrical resistance of the heating resistive element of described predetermined quantity as the described predetermined quantity of resistance value;
In the time driving described heat, drive with heating resistive element corresponding with described constituent parts piece, the described predetermined quantity of predetermined energising amount to described constituent parts piece respectively, so that the total caloric value of this units chunk is identical with the total caloric value of other units chunk.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-292395 | 2010-12-28 | ||
| JP2010292395A JP2012139839A (en) | 2010-12-28 | 2010-12-28 | Thermal head system, and current-carrying control method for thermal head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102529417A CN102529417A (en) | 2012-07-04 |
| CN102529417B true CN102529417B (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110325725.4A Expired - Fee Related CN102529417B (en) | 2010-12-28 | 2011-10-19 | Thermal head system and electrifying control method for thermal head |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012139839A (en) |
| CN (1) | CN102529417B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6092677B2 (en) * | 2013-03-25 | 2017-03-08 | ニスカ株式会社 | Printing device |
| JP6052138B2 (en) * | 2013-11-05 | 2016-12-27 | カシオ計算機株式会社 | Stamp surface forming apparatus and stamp surface forming method |
| CN107878059B (en) * | 2017-09-22 | 2020-01-31 | 福建联迪商用设备有限公司 | Efficient printing method and storage medium |
| CN110789236B (en) * | 2019-11-06 | 2020-09-25 | 上海商米科技集团股份有限公司 | Method for detecting bad point of printing head of thermal printer |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6480554A (en) * | 1987-09-22 | 1989-03-27 | Toshiba Corp | Thermal recording apparatus |
| JP2523934B2 (en) * | 1990-04-26 | 1996-08-14 | 松下電器産業株式会社 | Resistance trimming method of thermal head |
| JPH07242012A (en) * | 1994-03-02 | 1995-09-19 | Oki Electric Ind Co Ltd | Printer |
| JPH08207341A (en) * | 1994-11-18 | 1996-08-13 | Sanyo Electric Co Ltd | Method for driving recording head |
| JPH08300708A (en) * | 1995-04-28 | 1996-11-19 | Graphtec Corp | Method for controlling driving of thermal head |
| JPH11334127A (en) * | 1998-05-22 | 1999-12-07 | Toshiba Corp | Method for trimming thermal print head |
| JP2003191513A (en) * | 2001-12-28 | 2003-07-09 | Alps Electric Co Ltd | Thermal printer and method for energizing the same |
| JP2005169834A (en) * | 2003-12-11 | 2005-06-30 | Sony Corp | Printer device and method of uniforming resistance value of thermal head |
-
2010
- 2010-12-28 JP JP2010292395A patent/JP2012139839A/en active Pending
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2011
- 2011-10-19 CN CN201110325725.4A patent/CN102529417B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102529417A (en) | 2012-07-04 |
| JP2012139839A (en) | 2012-07-26 |
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Granted publication date: 20141008 Termination date: 20181019 |