CN102529417A - 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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- CN102529417A CN102529417A CN2011103257254A CN201110325725A CN102529417A CN 102529417 A CN102529417 A CN 102529417A CN 2011103257254 A CN2011103257254 A CN 2011103257254A CN 201110325725 A CN201110325725 A CN 201110325725A CN 102529417 A CN102529417 A CN 102529417A
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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 a heat heating resistive element that is had is controlled; This heat head for example be thermosensitive porous plate printing in the hole plate print device with the plate-making mechanism of body paper etc., the heating resistor that is arranged with a plurality of heating resistive elements is applied voltage and makes each heating resistive element heating.
Background technology
In the past, in hole plate print device, the device as using thermosensitive porous plate printing with body paper mainly contained cycle type hole plate print device and simple and easy push type hole plate print device.These printing equipments use plate for thermal sensitive porous printing with (thermosensitive porous plate printing with) body paper, this body paper with adhesive bonding through the heat fusing perforation thermoplastic resin film and approach coil paper etc. as the porous of the supporter of this film and form.Use this body paper of heat head heating; Its non-blank-white portion corresponding to printed images is perforated, makes a plate thus, through alignment and push body paper and the printing after the plate-making; The China ink that goes out from the supporter side pressure of body paper is transferred on the printing through the hole of opening at film, thereby prints.
Generally speaking, heat head has the heating resistor that linearity is arranged with a plurality of heating resistive elements, and the non-blank-white portion to desirable printed images that is used for through optionally driving heating resistive element on body paper bores a hole.But, have following problems in the above-mentioned heat head: because the resistance value of each heating resistive element is equal entirely, therefore in head, produce the distribution of caloric value, cause the uneven or some omission (puncherless) of image color.In order to address this problem, to have proposed to revise each heating resistor in the past and driven corresponding to the difference of resistance value.
For example, in patent document 1 disclosed technology, have: the measuring unit of measuring the resistance value that is arranged on a plurality of heating resistive elements in the heat head respectively; And,, adjust the adjustment unit of the conduction time of each heater element respectively based on the resistance value of measuring for to make the caloric value of each heater element even basically.Thus, the caloric value of each heater element of heat head equates, can carry out high-precision printing.
In patent document 2 disclosed technology; The electrical pulse of supplying with each heating resistive element is divided into a plurality of editing pulses that are directed against each heating resistive element respectively; Simultaneously, control the pulse width of each editing pulse of supplying with each heating resistive element respectively based on the resistance value of each heater element.Thus, make the peak temperature of each different heating resistive element of resistance value identical, uniformly, do not write down uneven printing thereby can carry out temperature with thermal response characteristics.
In patent document 3 disclosed technology; 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; Caloric value distribution map according to these correction data is each heating resistive element of unit predrive with the piece, optionally formally drives heating resistive element then and carries out record.Thus, can make the caloric value of heating resistive element even, prevent that record is uneven.
But; There is following problems in disclosed technology in the above-mentioned patent document 1 and 2: when driving hot at every turn; Resistance value to each heating resistive element is measured, and need adjust the device of the conduction time of heating resistive element respectively, and preliminary treatment such as the measurement of resistance value need the time; And the device that need be used to measure, thereby the structure of system and control become complicated.
In addition; There is following problems in disclosed technology in the patent document 3: when driving hot at every turn; Need after with the piece being each heating resistive element of unit predrive, formally drive; This need carry out the device of predrive and the formal two stage drive controlling that drive, thereby the structure of system and the control complicacy that becomes.
And; In patent document 1 to 3 disclosed technology; Control the powered-on mode of heating resistive element of conduction time or the block unit of each heating resistive element based on the difference of the resistance value of whole heating resistive elements and its mean value, thereby need make resistance value and average electrical resistance differ the energising amount of bigger heating resistive element and the energising amount of other heating resistive element has a great difference.Therefore, there is the more different problem of aging generation that makes heating resistive element owing 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, when factory shipment heat,, each heating resistive element is implemented finishing (trimming) handles for the resistance value that makes the heat head is even.This finishing is handled through heating resistive element being carried out multiple pulses and is switched on and change the resistance value of heating resistive element.
Generally speaking, in order to be controlled to be minimum owing to heating resistive element being carried out the structural deterioration that pulse electrifying causes, finishing is handled and is just handled the resistance value degree uniformly roughly that makes each heating resistive element usually.Then, the homogenising of remaining small electric resistance is normally carried out through the drive controlling of above-mentioned heat head.
Therefore, for fear of the drive controlling of above-mentioned heat head, need compare with general quantity increases the homogenising that trim amount realizes the resistance value of each heating resistive element.But like this, the increase that heating resistive element possibly produce owing to trim amount makes structural degradation become big, 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 having the device that linearity is arranged with the heat head of a plurality of heating resistive elements; When driving hot, do not carry out the measurement or the complicated processing such as energising control of the resistance value of heating resistive element, the increase owing to trim amount does not cause durability to reduce, and can suppress the difference of the heat generation characteristic of each heating resistive element.
To achieve these goals, first aspect of the present invention provides a kind of hot head system,
Said hot head system has the heating resistor that shape linearly is arranged with a plurality of heating resistive elements, is used for making through said heating resistor is switched on each heating resistive element heating,
Bearing of trend along said straight line is divided into a plurality of units chunk with said heating resistor, and the constituent parts piece is made up of the said heating resistive element of predetermined quantity respectively,
Said hot head system comprises:
Energising amount storage part; Its by said constituent parts piece store respectively for make add up to caloric value consistent with the expected objective caloric value, based on differing from of the average electrical resistance of the heating resistive element of said predetermined quantity and target resistance values calculate, and the relevant energising amount of heating resistive element of said predetermined quantity; Wherein, said total caloric value is to the total caloric value during as the heating resistive element energising of the said predetermined quantity of resistance value with the average electrical resistance of the heating resistive element of said predetermined quantity;
Energising amount control part is used for when driving said heat, by each said constituent parts piece, respectively with corresponding, the said energising amount of said units chunk storage part in the energising amount of being stored drive the heating resistive element of the said predetermined quantity of this units chunk.
In addition, to achieve these goals, second aspect of the present invention provides a kind of conduction control method of heat head,
This heat head has the heating resistor that shape linearly is arranged with a plurality of heating resistive elements, is used for making through said heating resistor is switched on each heating resistive element heating,
Bearing of trend along said straight line is divided into a plurality of units chunk with said heating resistor, and the constituent parts piece is made up of the said heating resistive element of predetermined quantity respectively,
Said conduction control method comprises:
Add up to caloric value consistent in order to make with the expected objective caloric value; Poor based on the average electrical resistance of the heating resistive element of said predetermined quantity and target resistance values; Confirm the energising amount relevant respectively in advance by said constituent parts piece with the heating resistive element of said predetermined quantity; Wherein, said total caloric value is to the total caloric value during as the heating resistive element energising of the said predetermined quantity of resistance value with the average electrical resistance of the heating resistive element of said predetermined quantity;
When driving said heat, respectively to drive with the heating resistive element of corresponding, the predetermined energising amount of said constituent parts piece to the said predetermined quantity of said constituent parts piece.
The resistance value control method of the system for controlling resistance value of the heat head of the present invention through first aspect record and the heat head of the present invention of second aspect record; About will be linearly on the bearing of trend of straight line shape be arranged with a plurality of units chunk that the heating resistor of a plurality of heating resistive elements is divided into, the average electrical resistance of the heating resistive element of predetermined quantity in measurement unit's piece respectively during fabrication.
In addition; Poor based on measured average electrical resistance and target resistance values; Respectively the constituent parts piece is confirmed in advance the following energising amount of the heating resistive element of predetermined quantity, the total caloric value that this energising amount makes resistance value when being the heating resistive element energising of predetermined quantity of average electrical resistance is consistent with the expected objective caloric value.
And, when driving hot, respectively the predetermined energising amount of units chunk is driven a plurality of heating resistive elements of constituent parts piece.
Therefore; In the constituent parts piece; The resistance value of supposing the heating resistive element of predetermined quantity all is their average electrical resistance; With the total caloric value energising amount identical of the heating resistive element of these predetermined quantities, drive the heating resistive element of predetermined quantity with the total caloric value of other units chunk.The conduction time of the units chunk that the units chunk that thus, the average electrical resistance is low is higher than average electrical resistance is short.
The total caloric value of constituent parts piece at this moment is with each all is that the total caloric value during to logical identical time of constituent parts piece electric equates under the situation of target resistance values in the average electrical resistance of supposition constituent parts piece.
Therefore, when 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, with the resistance change amplitude of this target resistance values, than the average electrical resistance of whole heating resistive elements of heating resistor is little as the amplitude of variation of benchmark as each heating resistive element of the heating resistor of benchmark.
Therefore; With so that compare during each heating resistive element of energising amount driving that all caloric value of heating resistive elements is consistent with the target caloric value; 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 that causes owing to total energising amount.
In addition, need not processing, therefore can realize the simplification of control method and control structure in the measurement of each resistance value of carrying out heating resistive element when driving heat or complicated energising control etc.
And; Even do not increase the trim amount in the finishing processing; Also can the inhomogeneous of resistance value of each heating resistive element substantially be reduced, therefore, can prevent the reduction of the durability of the heating resistive element that the increase owing to trim amount causes through energising control.
Description of drawings
Fig. 1 illustrates the general profile chart that is suitable for the hot head system of the present invention and the internal structure of the hole plate print device of one embodiment of the present invention of a heat conduction control method.
(a) among Fig. 2 is the plane that the hot head unit of this embodiment is shown, and (b) among this figure is the side view that the hot head unit of (a) is shown.
(a) among Fig. 3 is the plane of schematically illustrated heat head, and (b) among 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 this embodiment is shown.
Fig. 5 is the different figure that the resistance value of each heating resistive element of this embodiment is shown.
Fig. 6 is the figure that the trim amount when handling resistance value with each heating resistive element and evenly turn to common target resistance values through finishing is shown.
Fig. 7 is the process chart that hot the manufacturing approach of this embodiment is shown.
Fig. 8 is the cutaway view of process of manufacturing process that the heat head of this embodiment was shown by the stage.
The specific embodiment
Specify embodiment of the present invention below in conjunction with accompanying drawing.In this embodiment, the thermosensitive porous plate printing that is used for hole plate print device with the conduction control method with hot head system of the present invention and heat head describes with the situation of the plate-making mechanism of body paper as an example.Note; In this embodiment; The situation that the present invention is used for the plate-making mechanism of body paper has been described; But the invention is not restricted to this, in addition, for example can also being used for, heat-sensitive type tape deck or thermal transfer printing system etc. apply whole devices that voltage makes each heating resistive element heating to the heating resistor that is arranged with heating resistive element.
(overall structure of hole plate print device)
Fig. 1 is the general profile chart of internal structure that the hole plate print device 1 of this embodiment is shown.In Fig. 1, hole plate print device 1 mainly is made up of original copy reading mechanism 2, plate-making 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, the part that this edition body 16 and pressure roll 17 are set to mutual outer peripheral face slightly near, and can rotate freely separately.The outer peripheral face of version body 16 is provided with body paper clamping section 18, through the front end of these body paper clamping section 18 holes for clamping body papers.In addition, being provided with as the outside compression roller 47 of pressure exerting arrangement at version body 16 inner peripheral surfaces with pressure roll 17 relative positions.In addition, the outer peripheral face formation opening surface (effectively printing surface) at version body 16 is formed with a large amount of holes on this opening surface, through this opening surface, supply with China ink from the inside of version body 16 to the outside.In addition, at outer peripheral face package porous body paper, in the China ink between opening portion that supplies to outer peripheral face and porous body paper, China ink only supplies to the outside from the perforation face of porous body paper.
Original copy reading mechanism 2 is that scioptics such as scanner or CCD etc. read original copy optically, then as the mechanism of signal of telecommunication output.The information that is read is based on predetermined instruction (enlarge, dwindle etc.) and processed, and delivers to plate-making mechanism 3.Plate-making mechanism 3 is based on the mechanism that the signal of telecommunication that original copy reading mechanism 2 read 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 that is wound on the roller; Air roll 13, it disposes 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) among Fig. 2 is the plane that hot head unit 12 is shown, and (b) among this figure is the side view that the hot head unit 12 of (a) is shown.Like Fig. 2 (a) and (b), hot head unit 12 has substrate 20.Side below substrate 20 is equipped with aluminium heat liberation board 121 and connecting portion 122.At the upper face side of substrate 20, IC lid 123 is installed through nut 124.On the top of substrate 20, form hot 70.
(a) among Fig. 3 schematically shows hot 70 plane, and (b) among this figure is the X-X cutaway view of (a), (c) is the figure that schematically shows the quantity of heating resistive element.Like Fig. 3 (a) and (b), heat 70 has the insulating properties substrate body 56 that is 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.
On glaze layer 57, along main scanning direction, be formed in the plan view the linearly protrusion 57a of shape, the outline that this protrusion 57a forms its cross section is circular-arc slightly.The curved surface top of the protrusion 57a of this glaze layer 57 is provided with heating resistor 72.This heating resistor 72 through a plurality of heating resistive element 721～72n that will constitute by film with predetermined space along main scanning direction linearly shape arrange and constitute.In this embodiment, heating resistive element 721～72n arranges about 3600 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 the about 0.6 μ m of thickness etc. are electrically connected with each heating resistive element 721～72n respectively, and on glaze layer 57 film forming.In addition, in heat 70, form the protective layer 58 that heating resistor 72 and each conductive layer 64a, 64b are covered together.In addition, in the two ends of heating resistor 72 configuration public electrode portion 66,66.
Shown in Fig. 3 (a), heating resistive element 721～72n arranges with predetermined space at hot 70 length direction (main scanning direction), optionally it is applied voltage, to control its heating respectively.Conductive layer 64a, 64b are the duplexer formation of alloy or these metals and the alloy of main component by silver (Ag), gold (Au), copper (Cu), nickel (Ni), tungsten (W), aluminium (Al), platinum (Pt) metal of etc.ing or with them.The protective layer 58 of the superiors covers public electrode portions 66 with conductive layer 64a, 64b and heating resistor 72 and film forming.
(energising amount controlling organization)
The drive controlling of heat head of the present invention is carried out through above-mentioned control part 8.Fig. 4 is the block diagram that the related mechanism of drive controlling is shown.Notice that " module " used in the explanation represented by the hardware of device or equipment etc. or have the software of its function or their combination etc. to constitute, and is used to realize the functional unit of predetermined action.
As shown in Figure 4, as the relevant module of the drive controlling 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, imports the signal of the external equipment that is connected from external interface 83 or the operation signal of operating based on the user from guidance panel 80.In addition, the drive circuit 30 of 8 pairs of this control parts plate-making mechanism 3 and heat 70 grade are seen the control signal of the driving that is used to control plate-making off.
Control part 8 is controlled the heating resistive element 721～72n of heating resistor 72 respectively by each units chunk.The constituent parts piece is by heating resistive element 721～72n is divided into a cutting part in a plurality of in its direction arranged in a straight line and constitute, and each has the heating resistive element of predetermined quantity.
Energising amount control part 81 is realized by the arithmetic processing apparatus that for example CPU etc. carries out various calculation process; At this; Be module: when making a plate action with following function; When driving hot 70, read the correction data from revising data store 84, through making each heating resistive element 721～72n heating with the corresponding energising amount of the correction data of being read.In this embodiment, to adjusting the energising amount conduction time of heating resistive element 721～72n, make the energising amount of each heating resistive element 721～72n different through control.Note,,, can also control voltage or electric current and make the energising amount different except controlling conduction time as the adjustment of energising amount.
This energising amount control part 81 connects revises data store 84, revises the correction data of each units chunk in the above-mentioned constituent parts piece of data store 84 storages.The correction data of each units chunk are based on making from the ident value of the constituent parts piece of ident value storage part 9 inputs through exterior I/F (interface) 83 in the constituent parts piece.In ident value storage part 9, store the ident value of the average electrical resistance of the heating resistive element 721～72n that belongs to the constituent parts piece as the constituent parts piece.The ident value of constituent parts piece (the average electrical resistance that belongs to the heating resistive element 721～72n of constituent parts piece) is based on the resistance value of making each heating resistive element 721～72n that heat 70 o'clock measured by the resistance measurement device (not shown) of outside and makes.
Revise that differing between ident value (the average electrical resistance that belongs to the heating resistive element 721～72n of constituent parts piece) and the predeterminated target resistance value that data are based on each units chunk in the constituent parts piece that is stored in the ident value storage part 9 calculated, 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 that belongs 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)
Revise making of data when then making above-mentioned heat with reference to figure 5 explanations.At first, the heating resistive element 721～72n of this 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; The resistance value that makes each the heating resistive element 721～72n substantially average electrical resistance with average all resistance values of heating resistive element 721～72n is consistent; 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 be equivalent to revise with the amplitude more than the W1/2 correction of resistance value with respect to common energising amount.
In the energising control of carrying out for the caloric value unanimity that makes the heating resistive element 721～72n that in this amplitude of variation W1, has different resistance values; There is following problems: the device that need adjust the conduction time of heating resistive element 721～72n respectively; Preliminary treatment such as the measurement of resistance value need the time; And it is complicated that the device that need be used to measure, 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; Compare with other heating resistive element 721～72n that does not carry out such energising control, because the difference of total energising amount causes the difference that wears out of heating resistive element bigger.
Yet; Target resistance values with certain is consistent respectively if make the resistance value of whole heating resistive element 721～72n pass through the increase and decrease of trim amount; Then as shown in Figure 6, for the many heating resistive element 721～72n of trim amount, the heating resistive element 721～72n few with trim amount compares; Structural degradation is bigger, and the life-span is shorter.
On the other hand; For example; Shown in Fig. 5 (b); If whole heating resistive element 721～72n are divided into four units chunk, obtain the average electrical resistance of the heating resistive element 721～72n that belongs to the constituent parts piece respectively, then 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 this embodiment; Suppose heating resistive element 721～72n for the predetermined quantity that belongs to the constituent parts piece; Actual resistance according to these heating resistive elements 721～72n is obtained the average electrical resistance, determines following energising amount to the constituent parts piece, and this energising amount is the predeterminated target caloric value as the total caloric value of the heating resistive element of these predetermined quantities.Then; Will be used for thereby standard energising amount is modified to the energising amount that is determined drives the predetermined quantity of corresponding units chunk with the energising amount that is determined the correction data of heating resistive element, as the correction storage of constituent parts piece in revising data store 84.
With the energising amount of being crossed by the correction data correction of the constituent parts piece that determines like this; Drive the heating resistive element 721～72n of the predetermined quantity of corresponding units chunk respectively; Thus; As shown in Figure 5, each heating resistive element 721～72n that can make heating resistor 72 is the equal state heating of same resistance value with the average electrical resistance of the heating resistive element 721～72n of constituent parts piece.
Notice that above-mentioned target resistance values can be the for example median of the average electrical resistance of four units chunk, or the resistance value of four average electrical resistances after further average.In addition, can determine target resistance values like this, make that the maximum of difference of itself and average electrical resistance is minimum.
Next, for the energising control that contains constituent parts piece heating resistive element 721～72n that the correction data of using the said method decision carry out, from the process that is fabricated onto driving of heat 70, describe with reference to the process chart of figure 7 and the cutaway view of Fig. 8.
As shown in the figure, at first, in the production process of the glaze laminar substrate of step S101, shown in Fig. 8 (b), on the substrate body 56 shown in Fig. 8 (a),, form glaze layer 57 through serigraphy etc.At this moment, on glaze layer 57, form the linearly circular-arc slightly protrusion 57a of shape of outline.Then, 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 for example uses films such as vacuum evaporation or sputter to form technology.Then, in the light printing and etching work procedure of step S103, through light printing and etching, the length direction of the heating resistive element 721～72n of film forming such as Fig. 3 (a) glaze layer 57 that is shown in is with predetermined being spaced.
Then, in the electrode layer film formation process of step S104, shown in Fig. 8 (d), on whole on the heating resistor 72, form the conductive layer 64 of hoping thickness.Conductive layer 64 can form technology through films such as sputters and form, and also can form through silk-screen printing technique.Next, in the light printing and etching work procedure of step S 105, carry out pattern through light printing and etching and form, remove the conductive layer 64 in desirable zone.More specifically, shown in Fig. 3 (a), the length direction at hot 70 through with the predetermined top area that is spaced and exposes heating resistor 72, removes conductive layer 64.Through this operation, conductive layer 64 is separated into first conductive layer 64a of public electrode portion 66 sides and the second conductive layer 64b of opposition side by electricity.Afterwards, in the diaphragm formation operation of step S106, shown in Fig. 8 (e), form protective layer 58 in the superiors.
Then, carry out following heat treated.Particularly, in the annealing in process operation of step S 107, the heating heating resistor is whole.Through this annealing in process, eliminate local-crystalized uneven that heating resistor 72 is produced in the manufacture process, owing to 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 resistance value with each heating resistor 72 of adjustment made.
In this finishing is handled; For the heating resistive element 721～72n that constitutes each pixel; Through between conductive layer 64a and 64b, carrying out the multiple pulses energising; The resistance value of heating resistive element 721～72n is changed, the resistance value of heating resistor 72 on each point adjusted to desirable resistance value.Note, in this embodiment, in this step S108, can the degree of irregularity (distribution range of resistance value) of resistance value significantly be tapered to the degree shown in Fig. 5 (a).
Then, after accomplishing the finishing processing like this, 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.Notice that in this embodiment, shown in Fig. 3 (c), heating resistive element 721～72n has 3600, and its quartering is formed units chunk.But the isodisperse of heating resistive element 721～72n is not limited to the quartering, but can be any.For example, can set the object variations amplitude of the resistance value of the heating resistive element 721～72n in the units chunk earlier, scope that this amplitude of variation covered as a units chunk, is determined the quantity of the heating resistive element 721～72n in the units chunk thus.
Next; According to the average electrical resistance of being calculated, make the energising that the average electrical resistance constituent parts piece, that the constituent parts piece is calculated when the record is essentially the predeterminated target resistance value respectively according to the method for top explanation and control employed correction data (S111).Notice that in this embodiment, this target resistance values is the minimum in the average electrical resistance of each piece, is 2040 Ω here.
Afterwards, the correction data that made are sent to hole plate print device 1 from the external interface 83 of ident value storage part 9 through control part 8, are stored in and revise in the data store 84.Note, revise making of data here and carry out, but also can use the calculation process module of hole plate print device 1 to carry out through ident value storage part 9.
(plate-making action)
The plate-making action of the hole plate print device 1 with above structure then, is described.
At first, in plate-making mechanism 3, sent the rotation of roller to come conveyance strip body paper 10 through air roll 13 and body paper, thermotropism head unit 12 is seen off.In hot head unit 12, based on the image information that original copy reading mechanism 2 is read, each heating resistive element 721～72n of hot 70 optionally generates heat, thus to the perforation of strip body paper 10 temperature-sensitives, thereby to porous body paper 15 plate-making.
At this moment, when driving hot 70, read the correction data, in energising amount control part 81, will be adjusted into energising amount conduction time, make each heating resistive element 721～72n heating corresponding to the correction data of being read from revising data store 84.Particularly; Revising data makes like this: in the manufacture process of heat head, based on the resistance value through the resistance measurement measurement device, calculate the average electrical resistance of each units chunk; Making the average electrical resistance of being calculated become the expected objective resistance value, is that unit makes with the units chunk.
Energising amount control part 81 is resolved the view data that original copy reading mechanism 2 is read in, for the non-blank-white portion corresponding to printed images bores a hole, with the energising amount corresponding to each pixel, the conduction time of calculating each pixel.At this moment, with reference to revising data,, make conduction time flexible corresponding to the resistance value of each heating resistive element 721～72n.Particularly; Based on the resistance value of in manufacture process, measuring by the resistance measurement device (Fig. 5 (a)); Calculate the average electrical resistance (Fig. 5 (b)) of each units chunk; Driving heat 70 o'clock,, with the units chunk energising amount of each heating resistive element 721～72n of unit correction for the average electrical resistance that makes the constituent parts piece all becomes consistent with the predeterminated target resistance value in fact state.Notice that this target resistance values is the minimum in the average electrical resistance of each piece, in this embodiment, target resistance values is 2040 Ω.
Therefore; In the average electrical resistance with whole heating resistive element 721～72n is that benchmark carries out respectively in the energising control of each heating resistive element 721～72n (Fig. 5 (a)); To revise the size of the resistance change amplitude W1 more than ± 5%, produce the inhomogeneous of energising amount correction amplitude.On the other hand; Through this embodiment; Under the situation of and the heating resistive element unification that belong to this units chunk switched on control consistent with target resistance values for the average electrical resistance that makes each units chunk; Energising amount correction amplitude inhomogeneous is limited in revising the size of the average electrical resistance amplitude of variation W2 of constituent parts piece, so this embodiment is little.
In addition,, heat, bore a hole corresponding to the non-blank-white portion of printed images, thereby make a plate by the heat head according to this revised conduction time.Notice that when printing drove, the body paper clamping section 18 of use version body 16 clamped the front end of the porous body paper 15 after the plate-making, under the state of this clamping, version body 16 rotates so that porous body paper 15 is reeled and is installed in the outer peripheral face of edition body 16.Then, printing 22 together is pressed with version body 16 and porous body paper 15 between compression roller 47 and pressure roll 17, and transfer printing is from the China ink of the perforated portion of porous body paper 15, with printed images on printing 22.
(effect and effect)
Making heat 70 o'clock; Calculate the average electrical resistance of the resistance value of each heating resistive element 721～72n; The correction data that the energising amount of each heating resistive element 721～72n in pairs done is revised respectively by the constituent parts piece, the state that makes average electrical resistance with the heating resistive element 721～72n of constituent parts piece become the expected objective resistance value makes heating resistive element 721～72n heating of constituent parts piece.In addition, driving heat 70 o'clock, revise data increases and decreases (stretching) energising amount (for example, conduction time) to each heating resistive element 721～72n corresponding to this.Therefore; Need not drive processing such as resistance value that heat 70 o'clock measures heating resistive element 721～72n and control conduction time; The driving time that can avoid causing owing to preliminary treatment is elongated, avoids system and control complicated, and avoids taking place the uneven or point of image color and omit (puncherless).
In addition; Through this embodiment,, a plurality of heating resistive element 721～72n are divided into predetermined units chunk making heat 70 o'clock; And measure the resistance value of constituent parts piece; Calculate to each units chunk the average electrical resistance, increase and decrease (stretching) energising amount (for example, conduction time) each heating resistive element 721～72n for the average electrical resistance that makes the piece under each element becomes the expected objective resistance value.Therefore, and the average electrical resistance of whole heating resistive element 721～72n is compared during as benchmark, can be with the resistance change amplitude inhibition of revising through the control of energising amount for by a small margin.Particularly; In the average electrical resistance with whole heating resistive element 721～72n is under the situation of benchmark; Shown in Fig. 5 (a), need revise ± the energising amount control of resistance change amplitude W1 more than 5%, but in this embodiment; Shown in Fig. 5 (b), the small size energising amount control of amplitude of variation W2 degree of revising the average electrical resistance of constituent parts piece gets final product.
In addition; Through such correction energising amount; Can make the average electrical resistance of constituent parts piece become the substantially identical all identical state of state with resistance value; Therefore, can be with the amplitude of variation of the resistance value of each heating resistive element 721～72n in the whole heating resistor 72, be suppressed at maximum among the amplitude of variation W3 of resistance value of average electrical resistance and heating resistive element 721～72n of constituent parts piece promptly below ± 3%.
Thus, the trim amount when not increasing factory's manufacturing can be in the variation of the resistance value that suppresses each heating resistive element 721～72n, the variation of correction when suppressing to drive.
Description of reference numerals
1 hole plate print device
2 original copy reading mechanisms
3 plate-making 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 scrape the portion of getting
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
The 57a protrusion
58 protective layers
64 conductive layers
64a first conductive layer
64b 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. hot head system has the heating resistor that shape linearly is arranged with a plurality of heating resistive elements, is used for making through said heating resistor is switched on each heating resistive element heating,
Bearing of trend along said straight line is divided into a plurality of units chunk with said heating resistor, and the constituent parts piece is made up of the said heating resistive element of predetermined quantity respectively,
Said hot head system comprises:
Energising amount storage part; Its by said constituent parts piece store respectively for make add up to caloric value consistent with the expected objective caloric value, based on differing from of the average electrical resistance of the heating resistive element of said predetermined quantity and target resistance values calculate, and the relevant energising amount of heating resistive element of said predetermined quantity; Wherein, said total caloric value is to the total caloric value during as the heating resistive element energising of the said predetermined quantity of resistance value with the average electrical resistance of the heating resistive element of said predetermined quantity;
Energising amount control part is used for when driving said heat, by each said constituent parts piece, respectively with corresponding, the said energising amount of said units chunk storage part in the energising amount of being stored drive the heating resistive element of the said predetermined quantity of this units chunk.
2. the conduction control method of a heat head, this heat head have the heating resistor that shape linearly is arranged with a plurality of heating resistive elements, are used for making through said heating resistor is switched on each heating resistive element heating,
Bearing of trend along said straight line is divided into a plurality of units chunk with said heating resistor, and the constituent parts piece is made up of the said heating resistive element of predetermined quantity respectively,
Said conduction control method comprises:
Add up to caloric value consistent in order to make with the expected objective caloric value; Poor based on the average electrical resistance of the heating resistive element of said predetermined quantity and target resistance values; Confirm the energising amount relevant respectively in advance by said constituent parts piece with the heating resistive element of said predetermined quantity; Wherein, said total caloric value is to the total caloric value during as the heating resistive element energising of the said predetermined quantity of resistance value with the average electrical resistance of the heating resistive element of said predetermined quantity;
When driving said heat, respectively to drive with the heating resistive element of corresponding, the predetermined energising amount of said constituent parts piece to the said predetermined quantity of said constituent parts piece.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010292395A JP2012139839A (en) | 2010-12-28 | 2010-12-28 | Thermal head system, and current-carrying control method for thermal head |
| JP2010-292395 | 2010-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102529417A true CN102529417A (en) | 2012-07-04 |
| CN102529417B CN102529417B (en) | 2014-10-08 |
Family
ID=46337945
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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070830A (en) * | 2013-03-25 | 2014-10-01 | 立志凯株式会社 | Printing apparatus |
| CN104608500A (en) * | 2013-11-05 | 2015-05-13 | 卡西欧计算机株式会社 | Stamp face forming apparatus, stamp face forming method, and medium |
| CN107878059A (en) * | 2017-09-22 | 2018-04-06 | 福建联迪商用设备有限公司 | Efficient Method of printing, storage medium |
| CN110789236A (en) * | 2019-11-06 | 2020-02-14 | 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 |
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| JP2523934B2 (en) * | 1990-04-26 | 1996-08-14 | 松下電器産業株式会社 | Resistance trimming method of thermal head |
| JPH08300708A (en) * | 1995-04-28 | 1996-11-19 | Graphtec Corp | Method for controlling driving of thermal head |
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| JPS6480554A (en) * | 1987-09-22 | 1989-03-27 | Toshiba Corp | Thermal recording apparatus |
| JPH07242012A (en) * | 1994-03-02 | 1995-09-19 | Oki Electric Ind Co Ltd | Printer |
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| JP2523934B2 (en) * | 1990-04-26 | 1996-08-14 | 松下電器産業株式会社 | Resistance trimming method of thermal head |
| 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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070830A (en) * | 2013-03-25 | 2014-10-01 | 立志凯株式会社 | Printing apparatus |
| CN104608500A (en) * | 2013-11-05 | 2015-05-13 | 卡西欧计算机株式会社 | Stamp face forming apparatus, stamp face forming method, and medium |
| CN104608500B (en) * | 2013-11-05 | 2016-09-07 | 卡西欧计算机株式会社 | Print face forms device and print surface forming method |
| CN107878059A (en) * | 2017-09-22 | 2018-04-06 | 福建联迪商用设备有限公司 | Efficient Method of printing, storage medium |
| 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 |
| CN110789236A (en) * | 2019-11-06 | 2020-02-14 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012139839A (en) | 2012-07-26 |
| CN102529417B (en) | 2014-10-08 |
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