CN101109846B - Reflection mirror unit in image reading device and image reading device using the same - Google Patents
Reflection mirror unit in image reading device and image reading device using the same Download PDFInfo
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- CN101109846B CN101109846B CN2007101303571A CN200710130357A CN101109846B CN 101109846 B CN101109846 B CN 101109846B CN 2007101303571 A CN2007101303571 A CN 2007101303571A CN 200710130357 A CN200710130357 A CN 200710130357A CN 101109846 B CN101109846 B CN 101109846B
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- Facsimile Scanning Arrangements (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
A reflection mirror unit for a document on a platen includes first and second reflection mirrors, a base frame formed of a plate member and having a sliding portion adapted to slidably engage a guide rail located in a sub-scanning direction for the document on the platen, and a mirror support frame formed of a plate member. The mirror support frame includes a mirror mounting portion for supporting the first and second reflection mirrors opposite to each other with a predetermined angle. First and second coupling portions are formed on the base frame and the mirror support frame to couple together.
Description
Technical field
The present invention relates to scanister, duplicating machine, read the catoptron in the image read-out of draft image of facsimile recorder etc. with optical mode, in particular, the present invention relates to according to light source the improvement of the mirror assembly of the image read-out that the mode that the optical system of catoptron etc. moves back and forth scans the draft that is positioned on the pressing plate.
Background technology
Generally, the image read-out in scanister, duplicating machine, the facsimile unit with light from light source irradiation to the draft that is positioned on the pressing plate, this reflected light images on the components of photo-electric conversion, with electric power mode reading images.In addition, be generally following apparatus, the components of photo-electric conversion adopt rows of sensors, and light source adopts light source row, along draft, according to sub scanning direction this light source is scanned, and thus, reads plane picture.
Passing through imaging optical system, read the occasion of such draft image according to the line precedence, for along sub scanning direction, move with light source with from the guides reflected light of the draft catoptron to the components of photo-electric conversion, according to can be along on the reciprocating balladeur train of draft face, load light source and catoptron, by moving of this balladeur train, the mode that the draft face is scanned constitutes.In this occasion, people know has light source and catoptron to be loaded on 1 balladeur train, constitutes the device of imaging optical system; The the 1st, the 2 two balladeur train is set, loads light source on a balladeur train therein, on another balladeur train, load catoptron, in mobile the 1st balladeur train and the 2nd balladeur train, constitute the device of imaging optical system.
General in above-mentioned any apparatus structure, will be mapped to from the illumination of light source on the draft on the pressing plate that is positioned over the device top, by this reflected light, by catoptron, along device vertically (horizontal direction) form light path, make device be flat and thickness reduces.Such as, in Japanese kokai publication hei 1-116662 document, disclose following device, wherein, be provided with the 1st balladeur train and the 2nd balladeur train, on the 1st balladeur train, load illuminator and the 1st catoptron that makes from the reflected light deflection of draft, on the 2nd balladeur train, load the 2nd, the 3rd catoptron that makes from the light deflection of the 1st catoptron.In addition, also disclose following scanning mechanism, wherein, according to supporting above-mentioned the 1st, the 2nd balladeur train along the mode that pressing plate moves, by driving motor, move the 1st balladeur train with fixing speed, move the 2nd balladeur train with its speed of 1/2, by condenser, on the components of photo-electric conversion that are arranged on the device substrate, carry out imaging.
Equally in TOHKEMY 2004-77851 document, disclose modular construction, wherein, when being loaded into a pair of catoptron on the 2nd balladeur train, by metal sheet separately, constitute carriage that slidably is supported on the guide rail and the lens supports that supports a pair of catoptron, by screw, with the fixing one that forms of two supports.
Like this, according to a pair of catoptron being dressed up assembly, the occasion that can constitute along the mode that pressing plate moves, in the past, disclosed as aforementioned TOHKEMY 2004-77851 document, on the underframe of portable unit, lens supports is installed, support this underframe according to the mode that can on guide rail, slide.Like this, the purpose that the support that supports a pair of catoptron is separated into 2 parts is to adopt metalwork for constituent components securely, in this occasion, by pressurization processing, the position of cutting apart the supporting reflex mirror does not have difference aspect dimensional accuracy, the position adjustments when assembling easily.
Such as, shown in the image pattern 6 (a) like that, if a pair of catoptron 50a, 50b not with predetermined angular, are installed on the lens supports 51 according to correct posture, then have the danger of light path bending.In addition, if this lens supports 51 correctly is not installed on the correct position of underframe 52, then in scanning when mobile, mirrors vibrate, or optical path direction moves.Thus, lens supports 51 is at the two ends of strut shape framework 51a, and the curved tabs that is processed to form by pressurization is set, and the mode that is positioned surperficial benchmark according to the two ends of catoptron is installed on this pair of right and left curved tabs 51b, the 51c.In addition, by screw etc., this lens supports 51 is fixed on the underframe 52.
If as described above, 2 frame parts are connected, constitute mirror assembly, then in handling ease, needn't make the crooked mirror that catoptron is installed be integral shaping for by pressurization processing, and to such as about the position of eyeglass installation portion adjust, make assembling easily.When adopting such assemble method, in the past, as above-mentioned patent documentation 2, because by screw etc., lens supports is fixed on the underframe, so lens supports is installed obliquely along illustrated arrow a direction (with reference to Figure 11 (a)).
Because simultaneously, the curved tabs of supporting reflex mirror is easily along arrow b direction (with reference to Figure 11 (b)) bending, thus if the occasion bending of the curved tabs about having when assembling etc., the problem of mirror tilt ground installation.If when two supports connect, produce bending in the installation site, then catoptron is arranged at correct position not with correct posture, and light path bends, or the curature variation of eyeglass, thus, causes reading images that the problem of distorting takes place.If like this, a pair of catoptron tilts along arrow a direction, then produce with image the danger that mode image blurring or that distort reads the draft image takes place, in addition, if produce offset, then along sub scanning direction along arrow b direction, produce the skew of illustrated Δ y, produce image blurring, figure anamorphosis, along the skew that main scanning direction produces illustrated Δ x, image read open offset.Particularly, eyeglass is difficult to make tabular surface completely, usually, though it is little to have an aberration of this core, the tendency that the aberration of its periphery is big.Thus, when assembling, the center non-migration mode of catoptron being assembled, is helpless and the very operation of difficulty that carry out.
So, major subjects of the present invention is to provide a kind of mirror assembly, wherein, in the lens supports that will load a pair of catoptron when underframe on being supported in guide rail is connected, needn't require special anchor clamps, can keep catoptron with correct posture along main scanning direction and the correct position of sub scanning direction.In addition, the image read-out that problem of the present invention is to provide a kind of mirror assembly and adopts it in this mirror assembly, constitutes the lens supports that supports a pair of catoptron by metal and other thin plate, in handling ease, lightweight, can keep catoptron reliably.
Summary of the invention
The 1st invention of the present invention constitutes following assembly, wherein, on the curved tabs on the both ends of the main scanning direction that is arranged at lens supports, support a pair of catoptron, according to can be when the mode of sliding on the guide rail of sub scanning direction setting supports the underframe that lens supports is installed, the slit-shaped groove that is formed at the slit-shaped embedded hole on the underframe and be formed on the lens supports is engaged, two supports are connected, this slit-shaped embedded hole comprises the regulation nip side wall of the main scanning direction spacing of relative curved tabs mutually, the face that touches of the position of regulation sub scanning direction, above-mentioned slit-shaped groove according to the rules the 1st, the mode of the relative position up and down of the 2nd catoptron forms, thus, a pair of catoptron with correct posture, is installed on correct position on underframe.
That is, because in the catoptron on being supported in the curved tabs of pair of right and left, the position of the slit-shaped groove of this curved tabs is positioned and is defined in the face that touches place in the slit-shaped embedded hole that is formed at underframe, so the situation of installation not with tilting.Because meanwhile, the spacing (span (ス パ Application)) of the main scanning direction in the relative mutually curved tabs is by the nip side wall regulation of slit-shaped embedded hole, so at the state of pair of curved bending tablet, it is not installed on the underframe.Meanwhile, by being formed at the slit-shaped groove on the curved tabs, the state of the position of regulation above-below direction is installed on the underframe at a pair of catoptron.
So, on the underframe that slidably is supported on the track segment, the situation that a pair of catoptron tilts along ground, sub scanning direction front and back can not take place, the situation of not being partial to the side before and after the main scanning direction yet and installing does not more have a pair of catoptron along amesiality and be installed on situation on the underframe up and down.In addition, because lens supports and underframe are connected under slit-shaped embedded hole and the chimeric mutually situation of slit-shaped groove, historical facts or anecdotes now keeps catoptron securely, can constitute the significant effect of two supports etc. by thinner plate lightweight ground.
In addition, the 2nd invention of the present invention is that a pair of catoptron located and fixed is in the connecting portion that is formed on the underframe, this underframe slidably engages with the guide rail of sub scanning direction, like this, by pressurization processing, be integrally formed into metal and other plate-shaped member, so, the sliding part and the connecting portion of underframe are formed with correct position relation, can be installed on the correct position of underframe with a pair of catoptron with correct posture.
Meanwhile; the main scanning direction of each catoptron read the reference side end face by being formed at the curved tabs on the lens supports; located and fixed is on underframe; the opposition side end face of this catoptron is by being installed on the carriage member on the lens supports in the mode that can carry out position adjustments; located and fixed is on underframe, and like this, the 1st, the 2nd catoptron is installed on the underframe with the posture that reads benchmark that meets main scanning direction; by lens supports, protected securely.
So, on the underframe that slidably is supported on the guide rail, a pair of catoptron can not take place in the situation about tilting forward and back along sub scanning direction, be not biased to main scanning direction one side and the situation of installing yet.In addition, even have by thinner plate, lightweight ground constitutes under the situation of lens supports, and catoptron still can pass through underframe, remains in the significant effect of correct position etc. securely.
Description of drawings
Fig. 1 is the overall description figure of the image read-out of built-in mirror assembly of the present invention;
Fig. 2 is the perspective illustration of scanning mechanism of the present invention;
Fig. 3 is the assembling exploded view of the mirror assembly of the 1st embodiment;
Fig. 4 is the top side portion component of the mirror assembly of the 1st embodiment;
Fig. 5 is the key diagram of the chimerism of the mirror assembly of expression the 1st embodiment, and Fig. 5 (a) is the enlarged drawing of the major part of lens supports and underframe, and Fig. 5 (b) is the side view of mirror assembly;
Fig. 6 is the key diagram of the mirror assembly of the 2nd embodiment, and Fig. 6 (a) is an exploded perspective view, and Fig. 6 (b) is the figure that specifies of the connecting portion of carriage member and underframe;
Fig. 7 is the perspective illustration of the lens supports in the mirror assembly of the 2nd embodiment;
Fig. 8 is the side view of the mirror assembly of the 2nd embodiment, and Fig. 8 (a) is a distolateral side view, and Fig. 8 (b) is another distolateral side view;
Fig. 9 be carriage member in the mirror assembly of the 2nd embodiment and underframe connecting portion specify figure;
Figure 10 is the key diagram of the position relation that reads benchmark in the presentation video reading device;
Figure 11 is the structural drawing of mirror assembly in the past, Figure 11 (a) expression assembling exploded view, the key diagram of the distortion of Figure 11 (b) expression frame.
Embodiment
According to illustrated preferred implementing form, the present invention is specifically described below.Fig. 1 is the overall description figure that is built-in with the image read-out of mirror assembly of the present invention.Fig. 2 is the perspective illustration of its scanning mechanism.
At first, the structure to image read-out A of the present invention is described.Image read-out A by shell 10, be arranged at flat 11 on the part of this shell 10, be arranged at the track segment 12 of the inside of shell 10, the 1st balladeur train 13 and the 2nd balladeur train 14, condenser 15 and the light-to-current inversion mechanism 16 that slidably are supported on this track segment 12 constitute.
Illustrated image read-out A is made of single shell structure, and the sidewall of shell 10 is made of securely synthetic resin etc., and fixing glass pressing plate 11 on end face, original copy lid 17 are provided with in mode to be opened/closed.In addition, around flat 11, flange 11a is set,, forms the diagram X-X benchmark (main scanning direction reads benchmark) and the Y-Y benchmark (sub scanning direction reads benchmark) that constitute the benchmark when arranging draft by this flange 11a.
According to the mode parallel track segment 12 is set with above-mentioned flat 11, illustrated track segment 12 is along vertical (sub scanning direction) of flat 11, with the state of Fig. 2 in front and back according to a pair of setting, the 1st track segment 12a is parallel respectively with the 2nd guide rail 12b, is arranged at abreast on the surface of flat 11.In addition, two track segment 12a, 12b are the L font by the cross section, or the parts of コ font constitute.Another track segment 12 also can be made of the rounded rod unit in cross section.Below above-mentioned track segment 12 singly is called " guide rail ".
On above-mentioned guide rail 12, support the 1st balladeur train 13 and the 2nd balladeur train 14 with sliding type.At first, the 1st balladeur train 13 is made of the rectangular case such as synthetic resin, and its inside is provided with the line source 13a of fluorescent light etc.; The 1st catoptron 13b, the 1st catoptron 13b make from this light source 13a along prescribed direction and shine reflection of light light deflection on the draft on the flat 11.Thus, in the 1st balladeur train 13, by thermotolerance synthetic resin, to form the receptacle of linear light source 13a and the receptacle of the 1st catoptron 13b respectively such as molded mode.
On the other hand, on above-mentioned the 2nd balladeur train 14, load the 2nd catoptron 20a and the 3rd catoptron 20b that accepts from the light (illustrated embodiment is horizontal optical path Ph1) of above-mentioned the 1st catoptron 13b.
Below, the drive system of above-mentioned the 1st, the 2nd balladeur train 13,14 is described, the 1st, the 2nd balladeur train 13,14 is by the drive mechanism of stepping motor etc.Specifically, pair of right and left take-up pulley 46a, 46b are set on the driving shaft 45 of driving mechanism, on take-up pulley 46a, 46b, are wound with tinsel 47.The pars intermedia of this tinsel 47 is fixed on the 1st balladeur train 14, and its leading section is wound on above-mentioned movable pulley 24a, the 24b of the mirror assembly that constitutes the 2nd balladeur train 14.Thus, by the rotation of driving shaft 45, the 1st, the 2nd balladeur train 13,14 moves along flat 11, and the 2nd balladeur train 14 relative the 1st balladeur trains 13 move with its speed of 1/2.In addition, on guide rail 12,,, the 1st balladeur train 13 and the 2nd balladeur train (mirror assembly) 14 are led according to reciprocating mode along flat 11 with good positional precision.In addition, by being arranged at the imaging len 15 of device bottom surface (or bottom side), projection is in light-to-current inversion mechanism 16 from the reflected light of the 2nd balladeur train 14.
Here, the 1st, the 2nd form of implementation to mirror assembly 14 of the present invention specifically describes.
At first, the structure to the mirror assembly 14 of the 1st form of implementation is described.Shown in the image pattern 3 like that, mirror assembly 14 is made of underframe 21 and lens supports 31.Support above-mentioned the 2nd catoptron 20a and the 3rd catoptron 20b with prescribed form,, move draft on the flat 11, simultaneously it is read along sub scanning direction along above-mentioned guide rail 12.For this reason, above-mentioned two supports 21,31 must be firmly, and lightweight ground constitutes simultaneously, is made of the sheet metal with physical strength etc.
Shown in above-mentioned underframe 21 image patterns 3 like that, the sheet metal by ferroaluminium etc. carries out press molding, the image that its length is a bit larger tham flat 11 reads width (main scanning direction length).On this underframe 21, by pressurization processing, on periphery, form the sweep that strengthens usefulness, in the external force that opposing is impacted etc.,, guarantee the intensity of mirror shell by assembling lens supports 31 described later.In addition, above-mentioned underframe 21 slidably engages and is supported on corresponding the 1st, the 2nd guide rail 12a, the 12b.For this reason, in illustrated occasion, only support slidably by the rail sliding part 23a of placement underframe 21 on the 1st, the 2nd guide rail 12a, 12b, the mode of 23b.In addition, rail sliding part 23a, 23b are made of the distance member such as the lubricity resin of Teflon (registered trademark) resin etc., and this resin system rail sliding part 23 is chimeric with the mounting hole 21a that is formed in the underframe 21, the formation one.
In addition, (26a 26b) is arranged in respectively in the both ends of main scanning direction pulley mounting hole 25a, the 25b of movable pulley 24a described later, 24b and slit-shaped embedded hole 26 to be installed on underframe 21.This each embedded hole 26a, 26b comprise nip side wall 28a, the 28b and the face that the touches 29a that contacts limit flexion sheet 31a, 31b of curved tabs 31a, the 31b of clamping lens supports 31 described later.According to passing through each wall, the mode of the position of regulation curved tabs 31a, 31b forms.In addition, pulley bracket is installed in pulley mounting hole 25a, 25b and is supported in movable pulley 24a, 24b on this pulley bracket by bearing, in slit-shaped embedded hole 26a, 26b, chimericly be connected with lens supports 31 described later, though it is, not shown in the drawings about this point.
Shown in lens supports 31 image patterns 3 like that, the sheet metal by ferroaluminium etc. carries out press molding, along main scanning direction (about Fig. 3), is a bit larger tham the plate-like piece that image reads width by length, the spacer member that the cross section is the コ font substantially constitutes.Above-mentioned the 2nd, the 3rd catoptron 20a, 20b are installed on this lens supports 31, are connected, constitute mirror assembly 14 with this underframe 21.Thus, on lens supports 31 at the main scanning direction two ends, curved tabs 31a, 31b according to the above-mentioned perpendicular substantially mode bending of supporting rod part 31c that is the コ font substantially, form in mutual relative mode.
4 positions on two curved tabs 31a, 31b, mode according to relative (opposed) forms mirror mounting hole 32a, 32b, 32c, 32d respectively, in each mirror mounting hole 32a～32d, positioning element 33a, 33b, 33c, 33d are set, the surface (reflecting surface) of this positioning element 33a, 33b, 33c, 33d and the 2nd, the 3rd catoptron 20a, 20b contacts, and stipulates its position (with reference to Fig. 5 (b)).In illustrated occasion, constitute by positioning element 33a and set screw 33b, with the location positioning of adjustable mode with the mirror surface with the 3rd catoptron 20b location.In addition, positioning element 33c and the 33d with the surface alignment of the 2nd catoptron 20a is made of the projection that is formed on above-mentioned curved tabs 31a, the 31b.
As described above, by curved tabs 31a, 31b; Be formed at the mirror mounting hole 32a～32d on this curved tabs 31a, the 31b; Be formed at the positioning element 33a～33d on this curved tabs 31a, the 31b equally, at a pair of catoptron 20a of lens supports 31 upper supports and 20b.So the pressurization processing by sheet metal etc. forms mirror mounting hole 32a～32d, positioning element 33a～33d or its installation portion, like this, correctly forms each dimensional accuracy.In addition, on the inner face of above-mentioned the 2nd, the 3rd catoptron 20a, 20b leaf spring 38a, 38b, 38c, 38d are set, it is held fixing by the mode that makes the mirror back side be offset to positioning element 33a～33d side.
In addition, on above-mentioned lens supports 31 slit-shaped groove 39 is set, this slit-shaped groove 39 is cut apart the reference position (Fig. 5 (a) Z-Z direction) of the 2nd, the 3rd catoptron 20a, 20b.Illustrated slit-shaped groove 39 forms by benchmark wall and L shaped stator 40 (40a, 40b), and this benchmark wall is formed on the lens supports 31 by punching press, and this L shaped stator 40 is installed on the lens supports 31 by modes such as spot welding.This L shaped stator 40 (40a, 40b) also can be integral and form agley from lens supports 31.Like this, on lens supports 31, a pair of the 2nd, the 3rd catoptron 20a, 20b are installed on its curved tabs 31a, 31b, meanwhile, form the slit-shaped groove 39 of the reference position (Fig. 5 (a) Z-Z directional reference) of stipulating each mirror.
Above-mentioned underframe 21 and lens supports 31 form one as following.At first, on underframe 21, form slit-shaped embedded hole 26 (26a, 26b) as aforementioned, slit-shaped groove 39 is formed at the two ends of main scanning direction respectively in lens supports 31, passes through the die-cut of punch process respectively, guarantees its positional precision.So according in slit-shaped embedded hole 26 (26a, 26b), the chimeric mutually mode of slit-shaped groove 39 makes up underframe 21 and lens supports 31 these two stands.In this assembled state,, two supports are fixed by being formed at the threaded hole on the L font stator 40 (40a, 40b).
Like this, assembling the 2nd, the 3rd catoptron 20a and 20b on the lens supports 31 that is combined on the underframe 21 thus, constitutes mirror assembly 14.So at first, the 2nd, the 3rd catoptron 20a, 20b are the supporting rod part 31c of コ font and the crooked edge of underframe 21 by the cross section of lens supports 31, guarantee to resist the physical strength of the bending force of main scanning direction.So even have under the situation of external force effect of impact etc., catoptron is still not damaged, or not crooked, and is held securely.
In addition, the curved tabs 31a of lens supports 31,31b are embedded among slit-shaped embedded hole 26a, the 26b of underframe 21, and its position is by nip side wall 28a, the 28b regulation that forms this embedded hole 26a, 26b.So, in being assembled in underframe 21 after, pair of right and left curved tabs 31a, 31b by nip side wall 28a, 28b the regulation, its base end part is not crooked.So, even forming by thin sheet metal under the situation of lens supports 31, during still not because of assembling or the impact in when use etc. make the situation of curved tabs bending, like this, can be by the thin sheet metal of processing easily, lightweight ground constitutes lens supports 31.Because like this, be easier to nip side wall 28a, the 28b regulation of the position of crooked pair of right and left curved tabs 31a, 31b, so the 2nd, the 3rd catoptron 20a, the 20b that remain on the lens supports 31 do not install obliquely along main scanning direction by underframe 21.
In addition, because (26a 26b) goes up setting and touches face 29a at above-mentioned slit-shaped embedded hole 26, so in curved tabs 31a, the 31b of pair of right and left, slit-shaped groove 39 touches this and touches face 29a, stipulates its position, relative underframe 21, lens supports 31 is not installed obliquely along main scanning direction.So, being supported in the underframe 21 on the track segment 12 relatively, lens supports 31 is not installed obliquely according to correct posture.
Because slit-shaped groove 39 is arranged at the reference position of the 2nd, the 3rd catoptron 20a, 20b on lens supports 31 therein, so by making this slit-shaped groove 39 chimeric with the slit-shaped embedded hole 26 (26a, 26b) of underframe 21, the 2nd, the 3rd catoptron 20a, 20b are border and relatively supported up and down with underframe 21.
As described above, mirror assembly 14 of the present invention can keep a pair of catoptron 20a, 20b securely by making the slit-shaped groove 39 on the slit-shaped embedded hole 26 that is formed on the underframe 21 and the relative curved tabs 31a, the 31b that are formed at lens supports 31 chimeric mutually under situation about not tilting along any direction in main scanning direction and the sub scanning direction.In addition, meanwhile, relative mutually the 2nd, the 3rd catoptron 20a, 20b can easily be cut apart correct position by the pressurization processing of underframe 21 and lens supports 31 with respect to underframe 21 with good precision setting.
The structure of following the mirror assembly 14 of relative the 2nd form of implementation is described.In addition, here, the label of mirror assembly 14 is 114, so that do not confuse with the 1st embodiment.Shown in the image pattern 6 (a) like that, mirror assembly 114 is made of underframe 121 and lens supports 131, according to the rules posture, support above-mentioned the 2nd catoptron 120a and the 3rd catoptron 120b, along above-mentioned guide rail 12, when moving, the draft on the pressing plate 11 is read along sub scanning direction.For this reason, above-mentioned two supports 121,131 must be firmly, and lightweight ground constitutes simultaneously, can pass through the big formation such as sheet metal of physical strength.
Shown in above-mentioned underframe 121 image patterns 6 (a) like that, the press molding by the sheet metal of ferroaluminium etc., its length reads width (main scanning direction length) greater than the image of pressing plate 11 slightly.On this underframe 121, form the crooked edge that strengthens usefulness by pressurization processing at periphery, in the external force that opposing is impacted etc., assemble lens supports 131 described later, thus, can guarantee the intensity of mirror shell.In addition, above-mentioned underframe 121 engages respectively in the mode of sliding and is supported on corresponding the 1st, the 2nd guide rail 112a, the 112b.Therefore, in illustrated occasion, only support slidably by the rail sliding part 123a of placement underframe 121 on the 1st, the 2nd guide rail 112a, 112b, the mode of 123b.In addition, rail sliding part 123a, 123b are made of the distance member such as the lubricity resin of Teflon (registered trademark) resin etc., and this resin system rail sliding part 123 is chimeric with the mounting hole 121a that is formed in the underframe 121, the formation one.
Pulley mounting hole 125a, 125b that movable pulley 124a described later, 124b will be installed on underframe 121 are arranged in the both ends of main scanning direction.In addition, on this underframe 121, the crooked brace 126a of pair of right and left, 126b turn up the soil at interval along main scanning direction and relatively are provided with.This bending brace 126a, 126b are connected the curved tabs 131b of lens supports 131 described later with carriage member 131a.In addition, in pulley mounting hole 125a, 125b, pulley support parts (not shown) and the movable pulley 124a, the 124b that are supported on these pulley support parts are installed.
Shown in lens supports 131 image patterns 7 like that, the sheet metal by ferroaluminium etc. pressurizes and is shaped, and along main scanning direction (about Fig. 7), to be longer than the plate-like piece that image reads width slightly, to be コ font distance member substantially with the cross section and to constitute.On this lens supports 131, above-mentioned the 2nd, the 3rd catoptron 120a, 120b are installed, be connected with above-mentioned underframe 121, constitute mirror assembly 14.For this reason, next curved tabs 131b and carriage member 131a are set on lens supports 131.
This curved tabs 131b and carriage member 131a according to shown in the image pattern 7 like that, relatively be provided with along main scanning direction in the mode of the end face that supports the 2nd, the 3rd catoptron 120a, 120b, form mirror construction opening 132a, 132b, 132c, 132d respectively.In addition, this curved tabs 131b is integral and formation agley from the supporting rod part of lens supports 131, carriage member 131a is along the mode of main scanning direction according to removable adjustment, be anchored on the supporting rod part 131c by screw, intersect substantially with supporting rod part 131c respectively, form continuously.The configuration relation of the main scanning direction of this curved tabs 131b and carriage member 131a is a position shown in Figure 10 described later relation.
Among mirror construction opening 132a～132d on being formed at above-mentioned curved tabs 131b and carriage member 131a, positioning element 133a, 133b, 133c, 133d are set, the surface (reflecting surface) of this positioning element 133a, 133b, 133c, 133d and the 2nd, the 3rd catoptron 120a, 120b contacts, and stipulates its position (with reference to Fig. 8 (b)).In illustrated occasion, constitute by the positioning element 133a and the set screw 133b that make the 3rd catoptron 120b location, determine the position on mirror surface according to adjustable mode.In addition, the positioning element 133c and the 133d of the surface alignment of the 2nd catoptron 120a are made of the projection that is formed on above-mentioned curved tabs 131a, the 131b.As described above, by carriage member 131a, curved tabs 131b, be formed at mirror construction opening 132a～132d on the two, be formed at the positioning element 133a～133d of this opening part, a pair of catoptron 120a and 120b are supported on the lens supports 131.
So the pressurization processing by sheet metal etc. is integrally formed into mirror mounting hole 132a～132d, positioning element 133a～133d or its installation portion, so correctly form each dimensional accuracy.In addition, in carriage member 131a, form slotted hole 131d, in this slotted hole 131d, be fixed on the supporting rod part 131c by fixing Screw 134 along main scanning direction.So, shown in the image pattern 9 like that, carriage member 131a is according to can be along main scanning direction, the mode of carrying out position adjustments is installed on the lens supports 131.In addition, on the inner face of above-mentioned the 2nd, the 3rd catoptron 120a, 120b, leaf spring 138a, 138b, 138c, 138d are set, are offset to positioning element 133a～133d side, the 2nd, the 3rd catoptron 120a, 120b are fixed on the mirror construction opening 132 by making minute surface.
In addition, as described above, on the curved tabs 131b and carriage member 131a that are connected with lens supports 131, the slit-shaped groove 139 of the reference position of cutting apart the 2nd, the 3rd catoptron 120a, 120b is set respectively.In addition, by this slit-shaped groove 139 is chimeric with underframe 121, relative underframe 121,2nd, the 3rd catoptron 120a, 120b spacing and locating according to the rules, be fixed on above-mentioned crooked brace 126a, the 126b by screw etc., thus, image pattern 9 forms one like that.
That is, above-mentioned underframe 121 and lens supports 131 form one as following.At first, on underframe 121, as aforementioned, pair of curved brace 126a, 126b are set, the curved tabs 131b of lens supports 131 and carriage member 131a location also are fixed on this bending brace 126a, the 126b.At this moment, in lens supports 131, adjust by fixing Screw 134 in the position of carriage member 131b that with curved tabs 131b is the opposition side of benchmark.
As described above, assembling the 2nd, the 3rd catoptron 120a and 120b on the lens supports 131 that is combined on the underframe 121 thus, constitutes mirror assembly 14.So at first, the 2nd, the 3rd catoptron 120a, 120b are the supporting rod part 131c of コ font and the crooked edge of underframe 121 by the cross section of lens supports 131, guarantee to resist the physical strength of the bending force of main scanning direction.So even under the situation of the external force effect that impact etc. is arranged, catoptron is still not damaged or crooked, and is held securely.
In addition, the position of curved tabs 131b of an end that is formed at lens supports 131 is by the crooked brace 126b regulation of underframe 121, adjust the position of carriage member 131a by fixing Screw 134, the location positioning that another is distolateral and being fixed on the crooked brace 126a of underframe.So, on being combined in underframe 121 after since the position by by crooked brace 126a, 126b the restriction, so the base end part of the curved tabs 131b of pair of right and left and carriage member 131a is not crooked.Thus, even owing to forming under the situation of lens supports 131 by thin sheet metal, curved tabs during still not because of assembling or the impact in when use etc. bend, so lens supports 131 can by handling ease, thin sheet metal lightweight constitute.
Below according to Figure 10, the position relation of aforesaid curved tabs 131b and carriage member 131a is described.Shown in the image pattern 10 like that, form flange 11a at the periphery of pressing plate 11, diagram Xp is set at the position reference of main scanning direction, Yp is set at the position reference of sub scanning direction.In addition, on pressing plate, be that benchmark is placed draft with this Xp and Yp.According to the placement benchmark of relative this draft, the consistent mode of beginning benchmark XS that reads that makes the components of photo-electric conversion (sensor row) 16 is with the components of photo-electric conversion 16 location and fixing.
According to such position relation, above-mentioned underframe 121 according to about sliding part 123a, 123b engage along the mode parallel and be positioned on the guide rail 12 with the position reference Yp of above-mentioned sub scanning direction.In addition, be formed at the curved tabs 131b of one of them the crooked brace 126b fixing len support 131 on this underframe 121, the mode of assigned position that the end face that is supported in catoptron 120a, 120b on this curved tabs 131b is positioned at the outside of above-mentioned position reference Xp forms.In addition, the position of the curved tabs 131b of location is as described above followed in the position that is formed at another carriage member 131a on the underframe 121, adjusts on lens supports 131 along main scanning direction, is fixed on the crooked brace 126a.
Because as described above, mirror assembly 114 of the present invention is by the pair of curved brace 126a, the 126b that are formed on the underframe 121; The curved tabs 131b of lens supports 131; And the carriage member 131a that is mounted thereon in the mode that can carry out position adjustments; The a pair of catoptron 120a, the 120b that are installed between this curved tabs 131b, the carriage member 131a constitute, so a pair of catoptron 120a, 120b can not kept obliquely securely along any direction in main scanning direction and the sub scanning direction.In addition, meanwhile, mutually relative the 2nd, the 3rd catoptron 120a, 120b can be provided with good positional precision with respect to underframe 121.In addition, can cut apart correct position easily by the punch process of underframe 121 and lens supports 131.
Claims (9)
1. the mirror assembly in the image read-out, this mirror assembly comprises: underframe, this underframe is made of plate-shaped member, this plate-shaped member has sliding part and connecting portion, this sliding part slidably engages with track segment, and this track segment is along the sub scanning direction setting that is positioned over the draft on the pressing plate; 1st, the guides reflected light on the 2nd catoptron, the 1st, the 2nd catoptron draft on will be from the light source irradiation to the pressing plate is to the light-to-current inversion mechanism of regulation; Lens supports, this lens supports is made of plate-shaped member, and the plate-shaped member of this lens supports comprises according to the eyeglass installation portion and the connecting portion that support above-mentioned the 1st, the 2nd catoptron in the relative mode of predetermined angular, it is characterized in that:
Above-mentioned underframe and above-mentioned lens supports connect by the connecting portion of above-mentioned underframe and the connecting portion of above-mentioned lens supports with being integral;
Above-mentioned eyeglass installation portion is formed at the mutual relative pair of curved sheet formation on the above-mentioned lens supports agley by the mode according to the two ends of the main scanning direction that supports above-mentioned the 1st, the 2nd catoptron;
The connecting portion of above-mentioned underframe is made of the slit-shaped embedded hole that engages with above-mentioned pair of curved sheet;
This slit-shaped embedded hole comprises the face that touches of position of nip side wall, the regulation sub scanning direction of the spacing of the main scanning direction of stipulating above-mentioned pair of curved sheet;
The connecting portion of above-mentioned lens supports comprises the slit-shaped groove, and this slit-shaped groove is arranged on the above-mentioned pair of curved sheet, by chimeric with above-mentioned slit-shaped embedded hole, stipulates the relative position up and down of above-mentioned the 1st, the 2nd catoptron.
2. the mirror assembly in the image read-out according to claim 1, it is characterized in that on above-mentioned pair of curved sheet, positioning element and bias component are set respectively, this positioning element touches the surface of above-mentioned the 1st, the 2nd catoptron and limits it, this bias component is pushed and the mirror back side of setovering, and at least one the surperficial positioning element that limits in above-mentioned the 1st, the 2nd catoptron constitutes according to the mode that can carry out position adjustments.
3. the mirror assembly in the image read-out according to claim 1 is characterized in that above-mentioned underframe is made of the plate-shaped member that is flat substantially;
Above-mentioned lens supports is by at the two ends of main scanning direction, and the spacer member that the cross section with relative mutually above-mentioned curved tabs is the コ font constitutes;
On above-mentioned curved tabs, above-mentioned the 1st, the 2nd catoptron is installed with predetermined angular according to the mode that input path and reflected light path walk abreast substantially;
In above-mentioned underframe and above-mentioned lens supports, it is chimeric mutually that above-mentioned slit-shaped fitting portion and above-mentioned slit groove are the T font substantially.
4. image read-out, it has the described mirror assembly of claim 1, it is characterized in that above-mentioned mirror assembly comprises:
Place the pressing plate of draft;
With the light source assembly that can be provided with along the mode that above-mentioned pressing plate moves;
Mirror assembly, this mirror assembly will from above-mentioned light source assembly shine on the above-mentioned draft guides reflected light to the regulation light-to-current inversion mechanism on;
The 1st driving mechanism, the 1st driving mechanism move above-mentioned light source assembly along sub scanning direction with fixing speed along the draft on the above-mentioned pressing plate;
The 2nd driving mechanism, the 2nd driving mechanism moves above-mentioned mirror assembly with 1/2 speed of the translational speed of above-mentioned light source assembly along sub scanning direction.
5. the mirror assembly in the image read-out, this mirror assembly comprises: underframe, this underframe is made of plate-shaped member, this plate-shaped member has sliding part and connecting portion, this sliding part slidably engages with track segment, and this track segment is along the sub scanning direction setting that is positioned over the draft on the pressing plate; 1st, the guides reflected light on the 2nd catoptron, the 1st, the 2nd catoptron draft on will be from the light source irradiation to the pressing plate is to the light-to-current inversion mechanism of regulation; Lens supports, this lens supports is made of plate-shaped member, and the plate-shaped member of this lens supports has the supporting rod part and the eyeglass installation portion that is connected with this supporting rod part that keeps above-mentioned the 1st, the 2nd catoptron, it is characterized in that:
Above-mentioned eyeglass installation portion is by the curved tabs that is bent to form from above-mentioned supporting rod part, constitute with the carriage member that can be installed on above-mentioned supporting rod part along the mode that main scanning direction carries out the position adjustment;
Above-mentioned curved tabs support above-mentioned catoptron main scanning direction read the reference side end face, above-mentioned carriage member is provided with according to the mode of another the distolateral end face that supports above-mentioned catoptron;
Above-mentioned curved tabs and above-mentioned carriage member are fixed on the connecting portion of above-mentioned underframe.
6. the mirror assembly in the image read-out according to claim 5, it is characterized in that, the bias component that has positioning reference plane respectively and push the biasing back lens surface, on the curved tabs and above-mentioned carriage member that are formed on the above-mentioned lens supports, this positioning reference plane touches the surface of above-mentioned the 1st, the 2nd catoptron respectively and limits.
7. the mirror assembly in the image read-out according to claim 5 is characterized in that above-mentioned underframe is made of the plate-shaped member of basic flat;
Above-mentioned lens supports is made of plate-shaped member, this plate-shaped member have the cross section be the コ font supporting rod part, be formed at the eyeglass installation portion at the two ends of this supporting rod part;
Above-mentioned the 1st, the 2nd catoptron is installed on the above-mentioned eyeglass installation portion with predetermined angular according to the mode that input path and reflected light path walk abreast substantially;
Above-mentioned underframe and above-mentioned lens supports are the T font substantially and interconnect.
8. the mirror assembly in the image read-out according to claim 5, the connecting portion that it is characterized in that being arranged on the above-mentioned underframe is made of the pair of curved brace with the prescribed distance bending, to stipulate the main scanning direction position of above-mentioned catoptron.
9. image read-out is characterized in that having:
Place the pressing plate of draft;
With the light source assembly that can be provided with along the mode that above-mentioned pressing plate moves;
The mirror assembly of claim 5 record, this mirror assembly will shine guides reflected light on the above-mentioned draft to the light-to-current inversion mechanism of regulation from above-mentioned light source assembly;
The 1st driving mechanism, the 1st driving mechanism move above-mentioned light source assembly along sub scanning direction with fixing speed along the draft on the above-mentioned pressing plate;
The 2nd driving mechanism, the 2nd driving mechanism moves above-mentioned mirror assembly with 1/2 speed of the translational speed of above-mentioned light source assembly along sub scanning direction.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006198593 | 2006-07-20 | ||
| JP2006-198593 | 2006-07-20 | ||
| JP2006198593A JP2008028672A (en) | 2006-07-20 | 2006-07-20 | Reflection mirror unit in image reader and image reader using the same |
| JP2006-223846 | 2006-08-21 | ||
| JP2006223846 | 2006-08-21 | ||
| JP2006223846A JP4868977B2 (en) | 2006-08-21 | 2006-08-21 | Reflective mirror unit in image reading apparatus and image reading apparatus using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109846A CN101109846A (en) | 2008-01-23 |
| CN101109846B true CN101109846B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101303571A Expired - Fee Related CN101109846B (en) | 2006-07-20 | 2007-07-18 | Reflection mirror unit in image reading device and image reading device using the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008028672A (en) |
| CN (1) | CN101109846B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009276395A (en) * | 2008-05-12 | 2009-11-26 | Nec Access Technica Ltd | Optical unit, image reader, and optical unit regulation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636273Y (en) * | 2003-07-22 | 2004-08-25 | 力捷电脑股份有限公司 | Optics scanning module |
| CN1797063A (en) * | 2004-12-21 | 2006-07-05 | 亚洲光学股份有限公司 | Scanning unit of possessing reflective layer with high reflectivity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426833A (en) * | 1990-05-22 | 1992-01-30 | Matsushita Electric Ind Co Ltd | Mirror supporting device for optical system |
| JP3747894B2 (en) * | 2002-08-20 | 2006-02-22 | 村田機械株式会社 | Image reading device |
-
2006
- 2006-07-20 JP JP2006198593A patent/JP2008028672A/en active Pending
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2007
- 2007-07-18 CN CN2007101303571A patent/CN101109846B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636273Y (en) * | 2003-07-22 | 2004-08-25 | 力捷电脑股份有限公司 | Optics scanning module |
| CN1797063A (en) * | 2004-12-21 | 2006-07-05 | 亚洲光学股份有限公司 | Scanning unit of possessing reflective layer with high reflectivity |
Non-Patent Citations (2)
| Title |
|---|
| JP平1-116662A 1989.05.09 |
| JP特开2004-77851A 2004.03.11 |
Also Published As
| Publication number | Publication date |
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| CN101109846A (en) | 2008-01-23 |
| JP2008028672A (en) | 2008-02-07 |
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