JP2011131177A - Washing jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing jig capable of preventing a crystal blank from getting into a gap between an outer body and the body of the washing jig to prevent the damaging of the crystal blank, and of preventing the bending or damaging of the washing jig itself. <P>SOLUTION: The washing jig for use in washing a thin plate, including a first outer body comprising a first storage member constituted of a first base member and a first frame member so that a thin plate can be inserted thereinto, with the bottom face of the first storage member comprising a first through hole, and a second outer body comprising a second storage member constituted of a second base member and a second frame member with the bottom face of the second storage member comprising a second through hole and second injection/discharge holes each disposed on the four corners thereof respectively, is characterized in that the first frame member is made insertible into the second storage member, and first injection/discharge holes are each disposed on the four corners of the first frame member respectively, at a position facing the corresponding second injection/discharge hole to communicate with the first storage member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning jig used when cleaning a thin plate-shaped body.

  As a thin plate-like body, that is, a thin plate, for example, there is a quartz base plate. Conventionally, this quartz element plate has been used in piezoelectric devices mounted on communication equipment, electronic equipment, and the like.

The quartz base plate 400 shown in FIGS. 5 and 6 is used after being cleaned. Since the quartz base plate 400 is small and easily broken, a cleaning jig 300 is used for cleaning the quartz base plate 400.
Specifically, as shown in FIGS. 5 and 6, the cleaning jig 300 is composed of a first exterior body 310 and a second exterior body 320.

The first exterior body 310 includes a first base portion 310a and a first frame portion 310b.
A plurality of the frame portions 310b are provided by etching a single metal plate, and a portion surrounded by the first frame portions 310b becomes the first accommodating portion 311. That is, the first accommodating portion 311 is formed by the first base portion 310a and the first frame portion 310b.
The first housing portion 311 can be inserted with the crystal base plate 400 therein, and the first base portion 310a in the first frame portion 310b serving as the bottom surface of the first housing portion 311 has a first penetration. A hole 312 is provided.

The second exterior body 320 includes a second base portion 320a and a second frame portion 320b.
The frame portion 320b is provided by etching a single metal plate, and a portion surrounded by the second frame portion 320b serves as a second accommodating portion 321. That is, the second housing portion 321 is formed by the second base portion 320a and the second frame portion 320b.
A plurality of second housing portions 321 are formed by the second base portion 320a and the second frame portion 320b, and the second base portion 320a in the second frame portion 320b serving as the bottom surface of the second housing portion 321 is connected to the second base portion 320a. Two through holes 322 are provided.
The first exterior body 310 is sandwiched between the bottom surface of the first housing portion 311 facing the quartz base plate 400 and the bottom surface of the second housing portion 321 facing the crystal base plate 400. (See, for example, Patent Document 1).

  In the cleaning of the crystal base plate 400 using the conventional cleaning jig 300, the crystal base plate 300 is accommodated, the cleaning jig 300 is immersed in a cleaning tank, and a water flow is sprayed toward the cleaning jig 300. By doing so, shower cleaning is performed to remove deposits such as polishing powder and dust adhering to the quartz base plate 400 (see, for example, Patent Document 2).

JP 2009-240977 A JP 2007-28453 A

However, the conventional cleaning jig 300 is configured to inject the water flow toward the outer surface of one of the first exterior body 310 and the second exterior body 320, so that the first through hole is formed. The exterior body on the surface opposite to the side from which the water flow is jetted by the water pressure of the water flow that has entered the first housing portion 311 and the second housing portion 312 from the inside of the 312 and the second through hole 322. Since the crystal element plate 400 enters between the first exterior body 310 and the second exterior body 320, the crystal element plate 400 breaks.
Further, since the exterior body on the side opposite to the side from which the water flow is jetted is in a floating state, the crystal base plate 400 is not fixed, and therefore the first exterior body 310 and the second exterior body 320 Since a process of rearranging the quartz base plate 400 that has entered between the two into the housing portion is required, there is a problem in that productivity decreases.

  The present invention has been made in view of the above problems, and a thin plate enters between the first exterior body and the second exterior body to prevent the thin plate from being damaged and to improve productivity. It is an object to provide a jig.

  The cleaning jig of the present invention is a cleaning jig used when cleaning a thin plate, and is a first housing portion provided by a first base portion and a first frame portion so that the thin plate can be inserted. A first exterior body in which a first through hole is provided on the bottom surface of the first housing part, and a second housing part provided by a second base part and a second frame part, A second exterior body in which a second through hole is provided on the bottom surface of the second housing portion, and a second inlet / outlet hole is provided in four corners of the bottom surface of the second housing portion. The frame portion can be fitted into the second accommodating portion, and the first injection / discharge holes are provided at the four corners of the first frame portion at positions facing the second injection / discharge holes, and the first injection / discharge holes are provided. The discharge hole is in communication with the first housing portion.

  Further, the cleaning jig of the present invention is a cleaning jig used when cleaning a thin plate, and includes a first housing provided by a first base and four wall portions so that the thin plate can be inserted. A first exterior body provided with a first through-hole on the bottom surface of the first housing portion, and a second housing portion provided by a second base and a second frame portion. A second exterior body in which a second through hole is provided in the bottom surface of the second housing portion, and a second inlet / outlet hole is provided in four corners of the bottom surface of the second housing portion. The wall portion is adapted to be fitted into the second accommodating portion, and the first injection / discharge holes are provided at four positions of the first base portion at positions facing the second injection / discharge holes. To do.

According to such a cleaning jig, the second inlet / outlet holes are provided at the four corners of the bottom surface of the second housing portion of the second exterior body, and the four corners of the first frame portion of the first exterior body are provided. The first injection / discharge hole is provided at a position facing the second injection / discharge hole, so that a water flow is jetted onto one surface of the cleaning jig, so that the inside of the first through hole and the The water flow that has entered the first housing portion and the second housing portion from within the second through hole is ejected from the first injection / discharge hole and the second injection / discharge hole, thereby ejecting the water flow. Since the water pressure applied to the exterior body on the surface opposite to the surface can be reduced and the crystal base plate can be prevented from entering between the first exterior body and the second exterior body, the crystal base plate is damaged. This can be prevented.
Further, by discharging from the first injection / discharge hole and the second injection / discharge hole, it is possible to reduce the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is being injected. It can prevent that the exterior body of the surface on the opposite side to the spraying side will be in the state which floated. Therefore, the crystal element plate does not enter between the first exterior body and the second exterior body, and a process of rearranging the crystal element plate into the first housing portion is not necessary, thereby improving productivity. be able to.

Further, according to such a cleaning jig, the second inlet / outlet holes are provided in the four corners of the bottom surface of the second housing portion of the second exterior body, and the four wall portions of the first exterior body are provided in the first exterior body. The cleaning jig is configured so that the first injection / discharge holes are provided at four positions of the first substrate portion at positions facing the second injection / discharge holes. By injecting a water flow onto one surface of the first through-hole, the water flow that has entered the first housing portion and the second housing portion from within the first through-hole and the second through-hole, By being discharged from the hole and the second injection / discharge hole, the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is jetted is reduced, and the first exterior body and the second exterior body Since it is possible to prevent the quartz base plate from entering between, it is possible to prevent the quartz base plate from being damaged.
Further, by discharging from the first injection / discharge hole and the second injection / discharge hole, the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is injected can be reduced. It can prevent that the exterior body of the surface on the opposite side to the spraying side will be in the state which floated. Accordingly, the crystal element plate does not enter between the first exterior body and the second exterior body, and a process of rearranging the crystal element plate into the first housing portion is not necessary, so that productivity is improved. be able to.

It is the disassembled perspective view which looked at the cleaning jig which concerns on the 1st Embodiment of this invention from the 1st exterior body side. It is the disassembled perspective view which looked at the cleaning jig which concerns on the 1st Embodiment of this invention from the 2nd exterior body side. It is the disassembled perspective view which looked at the cleaning jig which concerns on the 2nd Embodiment of this invention from the 1st exterior body side. It is the disassembled perspective view which looked at the cleaning jig which concerns on the 2nd Embodiment of this invention from the 2nd exterior body side. It is the disassembled perspective view which looked at the conventional cleaning jig from the 1st exterior body side. It is the disassembled perspective view which looked at the conventional cleaning jig from the 2nd exterior body side.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The thin plate will be described as a quartz base plate.
The cleaning jig 100 shown in FIGS. 1 to 5 accommodates the crystal base plate 10, immerses the cleaning jig 100 in a cleaning tank (not shown), and jets a water flow toward the cleaning jig 100. Thus, a water flow is applied to the surface of the crystal base plate 10 to remove the adhering matter adhering to the crystal base plate 10 for cleaning. Hereinafter, the quartz base plate 10 and the cleaning jig 100 will be described in this order.

(Crystal base plate)
The quartz base plate 10 is a substantially flat plate shape that is cut from an artificial crystalline lens at a predetermined cut angle and is subjected to outer shape processing, and has a planar shape of, for example, a square shape.
The thickness of the quartz base plate 10 is, for example, 20 μm to 50 μm. Exciting electrodes (not shown) are formed on both the front and back main surfaces of the cleaned quartz base plate 10 to form a quartz vibrating element (not shown).
The crystal resonator element is excited in a predetermined vibration mode and frequency when an external voltage is applied to the crystal base plate 10 through an extraction electrode (not shown) through an excitation electrode. .
The excitation electrode is formed by depositing and forming a metal film on both the front and back main surfaces of the crystal base plate 10, and chromium (the first metal film) is formed on the top surface of the crystal base plate 10. Cr) and titanium (Ti) are formed, and the second metal film, gold (Au), is stacked on the upper surface of the first metal film.

(Cleaning jig)
(First embodiment)
As shown in FIGS. 1 to 2, the cleaning jig 100 according to the first embodiment includes a first exterior body 110 and a second exterior body 120.
The 1st exterior body 110 shown in FIGS. 1-2 is comprised by the metal plate of the single plate comprised by stainless steel, such as SUS304, for example.
The first exterior body 110 includes a first base portion 110a and a first frame portion 110b.
A plurality of the frame portions 110 b are provided by etching a single metal plate, and a portion surrounded by the first frame portions 110 b becomes the first accommodating portion 111. That is, the first accommodating portion 111 is formed by the first base portion 110a and the first frame portion 110b.

The first accommodating portion 111 can be inserted with the crystal base plate 10 therein, and the first accommodating portion 111 has a first penetration through the first base portion 110a in the first frame portion 110b serving as a bottom surface of the first accommodating portion 111. A hole 112 is provided.
The first through hole 112 is provided by punching a metal plate or the like. The first through-hole 112 has the shape of an excitation electrode and a lead electrode provided on the main surface of the quartz base plate 10.

In addition, first injection / discharge holes 113 are provided at four corners of the first frame portion 110 b of the first exterior body 110. That is, the first injection / discharge holes 113 are provided at the four corners of the first frame portion 110b so as to face the second injection / discharge holes 123 described later.
The first injection / discharge hole 113 communicates with the first accommodating portion 111. That is, the first injection / discharge hole 113 serves to inject a water flow into the first storage portion 111 and the second storage portion 121 described later, and the first through hole 112 and the second injection / discharge described later. It plays the role of discharging the water flow that has entered through the holes 123.

Moreover, the opening area of the 1st accommodating part 111 is smaller than the 2nd accommodating part 121 of the 2nd exterior body 120 mentioned later. That is, the outer peripheral size of the first frame portion 110b is smaller than the opening size of the second accommodating portion 121 provided in the second frame portion 120b described later.
Moreover, the thickness of the 1st exterior body 110 is 70-140 micrometers, for example, adding the thickness of the 1st base part 110a and the 1st frame part 110b.

The second exterior body 120 shown in FIGS. 1 to 2 is configured by a single metal plate made of stainless steel such as SUS304, for example, similarly to the first exterior body 110.
The second exterior body 120 includes a second base portion 120a and a second frame portion 120b.
The frame portion 120b is provided by etching a single metal plate, and a portion surrounded by the second frame portion 120b serves as the second accommodating portion 121. That is, the second accommodating part 121 is formed by the second base part 120a and the second frame part 120b.

A plurality of second housing portions 121 are formed by the second base portion 120a and the second frame portion 120b, and the second base portion 120a in the second frame portion 120b which becomes the bottom surface of the second housing portion 121 is connected to the second base portion 120a. Two through holes 122 are provided.
The second through hole 122 is provided by punching a metal plate or the like. The second through-hole 122 has a shape of an excitation electrode provided on the main surface of the quartz base plate 10.

In addition, second injection / discharge holes 123 are provided at four corners of the bottom surface of the second housing portion 121 of the second exterior body 120.
Further, the second injection / discharge hole 123 is provided so as to face the first injection / discharge hole 113. In other words, the second injection / discharge hole 123 is provided at a position facing the first injection / discharge hole 113.
Accordingly, the second injection / discharge hole 123 serves to inject a water flow into the first storage portion 111 and the second storage portion 121, the second through-hole 112, and a first to be described later. It plays the role of discharging the water flow entered from the injection / discharge hole 113.

In addition, the opening size of the second housing portion 121 is larger than the outer peripheral size of the first frame portion 110 b of the first exterior body 110. The first frame portion 110b of the first exterior body 110 can be fitted.
By fitting the first frame part 110 b into the second housing part 121 in this way, the bottom surface of the first housing part 111 and the bottom surface of the second housing part 121 face the crystal base plate 10. It has become.
In addition, by fitting the first frame portion 110b into the second accommodating portion 121 in this way, the second injection / discharge hole 123 and the first injection / discharge hole 113 face each other.

One of the first exterior body 110 and the second exterior body 120 is located at the center of the bottom surface of the first housing portion 111 and the center of the bottom surface of the second housing portion 121 facing the crystal base plate 10. A first through-hole 112 and a second through-hole 122 penetrating from the main surface to the main surface are provided. In addition, the opening size of the 1st accommodating part 111 and the 2nd accommodating part 121 is smaller than the main surface size of the quartz base plate 10 accommodated in an inside.
Moreover, the thickness of the 2nd exterior body 120 is 70-140 micrometers, for example, adding the thickness of the 2nd base 120a and the 2nd frame 120b.
Moreover, the space | interval with the 1st exterior body 110 and the 2nd exterior body 120 is about the thickness of the quartz base plate 10 accommodated.

In such a cleaning jig 100, the crystal base plate 10 is accommodated in the first accommodating portion 111 of the first exterior body 110, and the first exterior is accommodated in the second accommodating portion 121 of the second exterior body 120. The first exterior body 110 and the second exterior body 120 are overlapped with each other so as to fit the first frame portion 120b of the body 110, and are used in a bonded and fixed state.
A water flow is sprayed toward the opening of the first through hole 112 and the second through hole 122 of the cleaning jig 100 in which the crystal base plate 10 is accommodated.
When the water stream hits the crystal base plate 10 through the first through hole 112 provided in the first exterior body 110 and the second through hole 122 provided in the second exterior body 120, the crystal base plate 10 The adhered material adhering to the substrate is removed, and the quartz base plate 10 is cleaned.

As described above, according to the cleaning jig 100 of the present invention, the second inlet / outlet holes 123 are provided at the four corners of the bottom surface of the second housing part 121 of the second exterior body 120, and the first exterior body 110. Since the first injection / discharge holes 113 are provided at the four corners of the first frame portion 110b at positions facing the second injection / discharge holes 123, a water flow is jetted onto one surface of the cleaning jig 100. As a result, the water flow that has entered the first accommodating portion 111 and the second accommodating portion 121 from the first through hole 112 and the second through hole 122 is converted into the first inlet / outlet hole 113. By discharging from the second injection / discharge hole 123, the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is jetted is reduced, and the first exterior body 110 and the second exterior body 120 are reduced. Can prevent the quartz base plate 10 from entering between In, it is possible to prevent that the quartz crystal plate 10 may be damaged.
Moreover, by discharging from the first injection / discharge hole 113 and the second injection / discharge hole 123, the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is injected can be reduced. Therefore, since the exterior body on the side opposite to the side from which the water flow is jetted does not float, it does not enter between the first exterior body 110 and the second exterior body 120, and the crystal element plate Since the process of arranging 10 in the 1st accommodating part 111 is unnecessary, productivity can be improved.

(Second Embodiment)
As shown in FIGS. 3 to 4, the cleaning jig 200 according to the second embodiment includes a first exterior body 210 and a second exterior body 220, and the first exterior body 210 includes: The point which is comprised by the 1st base 210a and the four wall parts 210b differs from 1st Embodiment.
The first exterior body 210 shown in FIGS. 3 to 4 is made of a single metal plate made of stainless steel such as SUS304, for example.
The first exterior body 210 includes a first base portion 210a and four wall portions 210b.
A plurality of the four wall portions 210b are provided by etching a single metal plate, and a portion surrounded by the four wall portions 210b becomes the first accommodating portion 211. That is, the first accommodating portion 211 is formed by the first base portion 210a and the four wall portions 210b.

The first accommodating portion 211 can be inserted with the crystal base plate 10 therein, and the first accommodating portion 211 has a first base portion 210a surrounded by four wall portions 210b serving as a bottom surface of the first accommodating portion 211. A through hole 212 is provided. The four wall portions 210b surround the first through-hole 212 and are provided at positions where the wall portions 210b do not contact each other.
The first through hole 212 is provided by punching a metal plate or the like. The first through hole 212 has the shape of an excitation electrode and a lead electrode provided on the main surface of the quartz base plate 10.

Further, a first injection / discharge hole 213 is provided at a position of the first base portion 210a of the first exterior body 210 facing a second injection / discharge hole 223 described later.
That is, the first injection / discharge holes 213 are provided at four locations on the first base portion 210a where the four wall portions 210b are not provided so as to face the second injection / discharge holes 223 described later. Yes.
The first injection / discharge hole 213 serves to inject a water flow into the first storage portion 211 and a second storage portion 221 described later, and the first through hole 212 and a second injection / discharge hole described below. It plays the role of draining the water stream entered from H.223.

The second exterior body 220 shown in FIGS. 1 and 2 is configured by a single metal plate made of stainless steel such as SUS304, for example, like the first exterior body 210.
The second exterior body 220 includes a second base portion 220a and a second frame portion 220b.
The frame portion 220b is provided by etching a single metal plate, and a portion surrounded by the second frame portion 220b is a second accommodating portion 221. That is, the second accommodating portion 221 is formed by the second base portion 220a and the second frame portion 220b.

A plurality of second housing portions 221 are formed by the second base portion 220a and the second frame portion 220b, and the second base portion 220a in the second frame portion 220b serving as the bottom surface of the second housing portion 221 is secondly connected. Two through holes 222 are provided.
The second through hole 222 is provided by punching a metal plate or the like. The second through hole 222 has the shape of an excitation electrode provided on the main surface of the quartz base plate 10.

In addition, second injection / discharge holes 223 are provided at the four corners of the bottom surface of the second housing portion 221 of the second exterior body 220.
Further, the second injection / discharge hole 223 is provided so as to face the first injection / discharge hole 213. That is, the second injection / discharge hole 223 is provided at a position facing the first injection / discharge hole 213.
Accordingly, the second injection / discharge hole 223 serves to inject a water flow into the first storage portion 211 and the second storage portion 221, the second through-hole 222, and the first to be described later. It plays the role of discharging the water flow that has entered from the injection / discharge hole 213.

In addition, the opening size of the second housing portion 221 is larger than the outer peripheral size of the four wall portions 210b of the first exterior body 210, and the second housing portion 221 has an opening area. The four wall portions 210b of the first exterior body 210 can be fitted.
By fitting the four wall portions 210b into the second housing portion 221 in this way, the bottom surface of the first housing portion 211 and the bottom surface of the second housing portion 221 face the crystal base plate 10. It has become.
Further, by fitting the four wall portions 210b into the second accommodating portion 221, the second injection / discharge hole 223 and the first injection / discharge hole 213 face each other.

  According to such a cleaning jig 200, the second injection / discharge holes 223 are provided at the four corners of the bottom surface of the second housing portion 221 of the second exterior body 220, and the four walls of the first exterior body 210 are provided. The portion 210b can be fitted into the second accommodating portion 221 and the first injection / discharge hole 213 is provided at the position of the first exterior body 210 facing the second injection / discharge hole 223. By injecting a water flow onto one surface of the cleaning jig 200, the first accommodation portion 211 and the second accommodation portion 221 from within the first through hole 212 and the second through hole 222. The water flow entering the inside is discharged from the first injection / discharge hole 213 and the second injection / discharge hole 223, thereby reducing the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is injected. be able to. Therefore, since the quartz base plate 10 can be prevented from entering between the first exterior body 210 and the second exterior body 220, the quartz base plate 10 can be prevented from being damaged.

  Moreover, since the water pressure applied to the exterior body on the surface opposite to the surface from which the water flow is injected can be reduced by being discharged from the first injection / discharge hole 213 and the second injection / discharge hole 223, It can prevent that the exterior body of the surface on the opposite side to the side which is injecting a water flow will be in the state which floated. Therefore, the crystal element plate 10 does not enter between the first exterior body 210 and the second exterior body 220, and there is no need for a process of rearranging the crystal element plate 10 into the first housing portion 211. Productivity can be improved.

In addition, this invention is not limited to the said embodiment, A various change, improvement, etc. are possible in the range which does not deviate from the summary of this invention.
Moreover, in the said embodiment, although the 1st injection | pouring discharge hole 213 and the 2nd injection | pouring discharge hole 223 are each provided in four places with respect to one accommodating part, it is provided in another adjacent accommodating part. The first injection / discharge hole and the second injection / discharge hole may be connected to each other.

  Moreover, in the said embodiment, although the 1st through-hole 212 and the 2nd through-hole 222 were described with the square shape in the planar shape, it may be circular. Further, the crystal base plate 10 is also described as a quadrilateral planar shape, but it may be a circular plate.

  Moreover, in the said embodiment, although the thin plate was demonstrated as the quartz base plate 10, you may use the thing of hard brittle materials, such as a ceramic, glass, and sapphire.

The piezoelectric device includes a quartz resonator element in which an excitation electrode is provided on the quartz base plate 10 in a recessed space formed on one main surface of the element mounting member, and the sealing conductor pattern and lid There is a crystal unit in which bodies are joined and hermetically sealed.
In addition, there is a crystal oscillator in which a crystal resonator element and an integrated circuit element are mounted on an element mounting member, and a sealing conductor pattern of the element mounting member and a lid are joined and hermetically sealed.

DESCRIPTION OF SYMBOLS 10 ... Crystal base plate 110, 210 ... 1st exterior body 110a, 210a ... 1st base part 110b ... 1st frame part 210b ... Wall part 111, 211 ... 1st 1 accommodating part 112,212 ... 1st through-hole 113, 213 ... 1st injection | emission / discharge hole 120,220 ... 2nd exterior body 120a, 220a ... 2nd base 120b, 220b ... 2nd frame part 121, 221 ... 2nd accommodating part 122, 222 ... 2nd through-hole 123, 223 ... 2nd injection | emission / discharge hole 100, 200 ... washing | cleaning jig

Claims (2)

A cleaning jig used for cleaning a thin plate,
In order to allow the thin plate to be inserted, the thin plate has a first housing portion provided by a first base and a first frame portion, and a first through hole is provided in the bottom surface of the first housing portion. A first exterior body;
A second housing portion provided by a second base portion and a second frame portion; a second through hole is provided in the bottom surface of the second housing portion; and at four corners of the bottom surface of the second housing portion. A second exterior body provided with a second injection / discharge hole,
The first frame portion can be fitted into the second accommodating portion, and the first injection / discharge holes are located at the four corners of the first frame portion so as to face the second injection / discharge holes. A cleaning jig provided, wherein the first injection / discharge hole communicates with the first housing portion. A cleaning jig used for cleaning a thin plate,
A first receiving portion provided by a first base and four wall portions so that the thin plate can be inserted, and a first through hole is provided in a bottom surface of the first receiving portion. 1 exterior body,
A second housing portion provided by a second base portion and a second frame portion; a second through hole is provided in the bottom surface of the second housing portion; and at four corners of the bottom surface of the second housing portion. A second exterior body provided with a second injection / discharge hole,
The four wall portions can be fitted into the second accommodating portion, and the first injection / discharge holes are provided at four positions of the first base portion at positions facing the second injection / discharge holes. A cleaning jig characterized by

Images