JPH05289197A - Device for holding light source for illuminating original - Google Patents

Abstract

PURPOSE:To easily fix the position of a terminal block, and to accurately and easily adjust the position of a light source at a time by displacing the terminal block in an original reading scanning direction and the vertical direction and fixing the movement of the terminal block in two directions such as the original reading scanning direction and the vertical direction with one kind of fixing screw. CONSTITUTION:By loosening the fixing screw 9, the terminal block 7 to which a halogen lamp 6 is connected is changed in the longitudinal direction of a slide hole 8 and also turned centering around the axial center of the screw 9. By the combination of the displacement of the block 7 in a linear direction and the displacement thereof in a turning direction, the block 7 is displaced in the original reading scanning direction and the vertical direction, and the position of the block 7 is easily fixed by aligning a projection 14 with 1st and 2nd peepholes 15 and 16 when the block 7 is displaced. Furthermore, by tightening one kind of screw 9, the movement of the block 7 in two directions such as the original reading scanning direction and the vertical direction is simultaneously fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document illumination light source holding device for holding a light source for illuminating a document, which is used in a document reading device such as a copying machine, an image scanner and a facsimile.

[0002]

2. Description of the Related Art Conventionally, a transparent document placing surface on which a document is placed and a scanner body having a light source and a reflecting plate are provided.
2. Description of the Related Art There is a document reading device that reads a reflection image of a document in a process of moving a scanner body in a document reading scanning direction relative to a document placement surface. In this case, the document is illuminated by the direct light from the light source and the reflected light from the reflection plate, but if the position of the light source with respect to the document mounting surface or the reflection plate is not constant, uneven illuminance occurs. In particular, when a halogen lamp is used as a light source, the coaxiality of the filament of the halogen lamp is large, so the position of the light source must be adjusted. For that purpose, the terminal plate connected to both ends of the light source,
There is an adjustment method of displacing the document in the scanning direction and the vertical direction so that the document is fixed at an arbitrary position.

[0003]

SUMMARY OF THE INVENTION A conventional adjusting method includes an adjusting mechanism for adjusting the position of a terminal plate in the original scanning direction.
By independently operating the adjusting mechanism for adjusting the vertical position of the terminal plate and finally tightening the fixing screw of each adjusting mechanism, the terminal plate is fixed at the proper position together with the light source. However, the terminal board cannot be fixed unless the fixing screws of the two adjusting mechanisms are tightened, and when tightening one fixing screw, the tightening force acts on the other adjusting mechanism. However, the adjustment work is extremely difficult.

[0004]

According to a first aspect of the present invention, there is provided a scanner body which is movable in a document reading direction relative to a document placing surface on which a document is placed, and terminal plates at both ends. A light source connected to the document placement surface facing the original placement surface,
A terminal block fixedly provided in the scanner body, an elongated sliding hole formed in the terminal plate, and a fixing screw inserted into the sliding hole to fix the terminal plate to a side surface of the terminal block. A pointer portion formed on the terminal plate, a first peep hole formed on the scanner body at a regular position of the pointer portion in the document scanning direction, and a regular pointer portion in the vertical direction. It is configured by a second peep hole which is positioned in the position and formed in the scanner body.

According to a second aspect of the present invention, the scanner main body is provided so as to be movable in the original reading direction relative to the original placing surface on which the original is placed, and both ends of the original are connected to terminal plates. The light source arranged to face the mounting surface, the terminal block fixedly provided on the scanner body, the groove for rotatably holding a fulcrum shaft erected from the side surface of the terminal plate, and the document platen. A plurality of terminal holding bodies having elongated holes extending in the width direction of the mounting surface, and the terminal holding bodies provided on the terminal base are rotatable about a rotation axis perpendicular to the fulcrum shaft and the rotation axis thereof. An eccentric cam fitted in the elongated hole having a shaft supporting portion slidably held in the axial direction and a collar for holding the terminal holding body between the terminal block and the eccentric cam. The lever eccentric cam is constituted by a fixing screw for fixing the eccentric cam to the terminal block. .

According to a third aspect of the present invention, the scanner main body is provided so as to be movable in the original reading direction relative to the original placing surface on which the original is placed, and both ends of the scanner main body are connected to terminal plates. A light source arranged to face the mounting surface, a terminal block fixedly provided on the scanner main body, and the terminal plate provided on the terminal block being rotatable and slidable in the direction of the rotation axis. A shaft support portion, an elastic member interposed between the terminal block and the terminal plate, an elongated hole formed in the terminal plate along the width direction of the document placing surface, and the terminal. An eccentric cam that has a flange for pressing the plate toward the terminal block and is fitted into the elongated hole, and a fixing screw that penetrates the eccentric cam and fixes the eccentric cam to the terminal block. Is.

According to a fourth aspect of the present invention, the scanner main body is provided so as to be movable in the original reading direction relative to the original placement surface on which the original is placed, and both ends of the scanner main body are connected to terminal plates. A light source arranged to face the mounting surface, a terminal block fixedly provided on the scanner main body, and the terminal plate provided on the terminal block being rotatable and slidable in the direction of the rotation axis. The shaft supporting portion, the long hole formed in the terminal plate along the width direction of the document placing surface, the eccentric cam fitted in the long hole, and the eccentric cam rotatably fitted. And a groove engaged with a part of the terminal plate, and an inclined surface inclined in a direction in which a protruding length from one end of the fitting portion continuously changes in the rotation direction. And a protrusion formed on the terminal block and brought into contact with the inclined surface of the swing cam. Wherein is through the swing cam is obtained constituted by a fixing screw for fixing the swing cam on the terminal block.

[0008]

According to the first aspect of the invention, by loosening the fixing screw, the terminal plate to which the light source is connected can be displaced in the longitudinal direction of the sliding hole and rotated about the axis of the fixing screw. It is possible to displace the terminal plate in the direction perpendicular to the original reading scanning direction by the combination of the displacement in the linear direction and the displacement in the rotating direction at this time. The position of the terminal board can be easily determined by aligning the pointer part with the second peep hole, and by tightening one type of fixing screw, the document reading / scanning direction of the terminal board and the vertical direction can be set. The movements of the light sources can be fixed at the same time, and thus the position of the light source can be adjusted accurately and easily at one time.

According to the second aspect of the invention, the fixing screw is loosened.
The fulcrum shaft of the terminal board to adjust the holding force of the terminal holding body.
And the terminal plate is rotated around its fulcrum shaft.
Then, by rotating the eccentric cam,
The holder can be rotated together with the terminal board.
The displacement of the terminal board about the axis and the axis of the fulcrum axis
The displacement of the terminal holding plate around the shaft support
The plate is used as a light source in two directions: the original scanning direction and the vertical direction.
Can be displaced in any direction, and one type of fixing screw
By tightening, between the eccentric cam collar and the terminal block
Hold and hold the terminal holding body, and hold these terminal holding bodies.
It is possible to hold the fulcrum shaft between the bodies and fix the terminal board.
Therefore, the position adjustment of the light source is accurate and easy at one time
Can be done.

According to the third aspect of the invention, the terminal plate can be rotated around the shaft supporting portion by loosening the fixing screw and turning the eccentric cam, and by tightening the fixing screw, the eccentric cam is fixed. In addition to fixing, the terminal plate pressed by the collar of the eccentric cam can be displaced along the axis of the shaft support according to the tightening force of the fixing screw. The position in the scanning direction and the vertical direction can be adjusted, and moreover, by fixing one type of fixing screw, the movement of the terminal plate connected to the light source in the scanning direction and the vertical direction of the document can be reliably fixed. can do.

According to the invention of claim 4, the rocking cam and the eccentric cam can be rotated in arbitrary directions by loosening the fixing screw, and the rotary motion of the rocking cam at this time causes the terminal block to rotate. Since the contact position of the inclined surface of the rocking cam with respect to the protrusion changes, the rocking cam can be axially displaced together with the terminal plate, and the pivoting motion of the eccentric cam causes the terminal plate to move along the axis of the eccentric cam. The terminal plate can be displaced in a direction orthogonal to the direction. By displacing the terminal board in two directions, the position of the light source in the original reading scanning direction and the vertical direction can be adjusted.
Furthermore, the swinging cam is fixed by tightening the fixing screw, and the terminal plate is clamped and fixed between the one surface of the groove of the swinging cam and the terminal block, and the eccentric cam is rotated at the edge of the long hole of the terminal plate. Dynamic movement can be prevented, and therefore, by tightening one type of fixing screw, the movement of the terminal plate to which the light source is connected in the document reading scanning direction and the vertical direction can be reliably fixed at one time.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention of claim 1 will be described with reference to FIGS. As shown in FIG. 1, a contact glass 1 as a transparent document placing surface is horizontally provided. The original 2 is placed on the upper surface of the contact glass 1. A pair of left and right terminal blocks 4 made of synthetic resin are fixed by screws 5 on both sides of the scanner body 3 which is reciprocally driven along the inner surface of the contact glass 1, and the side surfaces of these terminal blocks 4 serve as a halogen light source. Terminal plates 7 connected to both ends of the lamp 6 are connected. These terminal boards 7 are formed with elongated slidable holes 8 which are slightly inclined in the horizontal direction (see FIG. 2), and fixing screws 9 inserted in these slidable holes 8 are screwed onto the terminal block 4. Thus, the terminal board 7 is fixed. Further, in the scanner body 3, a reflector 10 for covering the lower surface of the halogen lamp 6, an auxiliary reflector 11,
A mirror 12 that reflects the reflected image of the original 2 and a lamp cover 13 that covers the top and the back of the halogen lamp 6 are attached. Then, an acute-angled protrusion 14 is formed as an indicator portion at the end of the terminal plate 7, and the scanner main body 3 is provided with a normal position of the protrusion 14 in the original reading scanning direction (moving direction of the scanner main body 3). A first peephole 15 correspondingly positioned and a second peephole 16 positioned corresponding to the regular position of the protrusion 14 in the vertical direction are formed. As shown in FIG. 1B, the terminal board 7 is connected to a power source (not shown) via a connector 17 and a harness 18.

In such a structure, by loosening the fixing screw 9, the terminal plate 7 to which the halogen lamp 6 is connected is displaced in the longitudinal direction of the sliding hole 8 and rotated about the axis of the fixing screw 9. The terminal plate 7 can be moved in the vertical direction and the original reading / scanning direction by a combination of the linear displacement and the rotational displacement of the terminal plate 7 at this time. By aligning the protrusion 14 with the first and second peepholes 15 and 16 during displacement, the position of the terminal board 7 can be easily determined. Further, by tightening one type of fixing screw 9, the terminal board 7
It is possible to simultaneously fix the movements in the two directions of the original reading scanning direction and the vertical direction. Therefore, the position of the halogen lamp 6 can be adjusted accurately and easily at one time.

Next, one embodiment of the invention of claim 2 is shown in FIG.
Or, it demonstrates based on FIG. The same parts as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof is omitted (the same applies hereinafter). A fulcrum shaft 19 is erected on the inner surface of the terminal plate 7 connected to both ends of the halogen lamp 6. Then, as shown in FIG.
A pair of terminal holding bodies 24, 25 having a groove 20 for rotatably holding the fulcrum shaft 19, a long hole 21 along the width direction of the contact glass 1, and a small hole 23 are provided. Further, the terminal base 4 is provided with a shaft support portion 26 for holding the terminal holding bodies 24, 25 so as to be rotatable about a rotation axis orthogonal to the fulcrum shaft 19 and slidable in the direction of the rotation axis. ing. The shaft support portion 26 is a shaft fitted in the small hole 23. However, when a shaft is provided upright in the terminal holding body 24 instead of the small hole 23, the small hole fitted in the shaft is used as the shaft support portion 26. It may be formed on the terminal block 4 as a support. In addition, the terminal block 4
An eccentric cam 28 having a collar 27 for holding the terminal holding bodies 24, 25 between is fitted into the elongated hole 21, and a fixing screw 9 penetrating the eccentric cam 28 is screwed on the upper surface of the terminal block 4. Have been combined.

In such a structure, by loosening the fixing screw 9, the fulcrum shaft 19 of the terminal board 7 is held by the terminal holding body 2.
4 and 25 are released from the holding force, the terminal plate 7 is rotated up and down around the fulcrum shaft 19, and the eccentric cam 2
By turning 8, the terminal holding body 2 is centered around the shaft support portion 26.
It is possible to horizontally rotate the terminals 4 and 25 together with the terminal board 7. Due to the displacement of the terminal plate 7 around the fulcrum shaft 19 and the displacement of the terminal holding plates 24 and 25 around the shaft supporting portion 26 orthogonal to the axis of the fulcrum shaft 19, the terminal plate 7 is moved together with the halogen lamp 6. It can be displaced in two directions, the original scanning direction and the vertical direction. Further, by tightening one type of fixing screw 9, the collar 2 of the eccentric cam 28 is
The terminal holding bodies 24, 25 are held and fixed between the terminal holding body 7 and the terminal base 4, and the grooves 20 of the terminal holding bodies 24, 25 are fixed.
The terminal plate 7 can be fixed by holding the fulcrum shaft 19 between them. Therefore, the position of the halogen lamp 6 can be adjusted accurately and easily at one time. The terminal board 7
Rotates in an arc around the fulcrum shaft 19, the position of the tip of the terminal plate 7 is displaced in the moving direction of the scanner body 3 when the terminal plate 7 is rotated, but the displacement is a small rotation angle of the terminal plate 7. Therefore, the allowable range is small and can be ignored.

Further, an embodiment of the invention of claim 3 is shown in FIG.
And FIG. 7 will be described. A bent piece 29 facing the upper surface of the terminal block 4 is formed on the terminal plates 7 connected to both ends of the halogen lamp 6, and the bent piece 29 is held so as to be rotatable and slidable in the direction of its rotation axis. The shaft support portion 30 is provided on the upper surface of the terminal block 4. This shaft support 30 is shown in FIG.
As shown in FIG. 5, the shaft fitted in the small hole 35 formed in the bending piece 29 is shown. However, when the bending piece 29 is provided with a shaft, the small hole fitted in the shaft is used as the shaft. It may be formed on the terminal block 4 as a support. In addition, a long hole 31 is formed in the bent piece 29 along the width direction of the contact glass 1. Further, an eccentric cam 33 having a collar 32 that presses the bent piece 29 of the terminal plate 7 toward the terminal base 4 is fitted into the elongated hole 31, and the fixing screw 9 penetrating the eccentric cam 33 is fixed to the terminal base 4.
Is screwed onto the upper surface of. Further, an elastic member 34 is interposed between the bending piece 29 and the terminal block 4 so as to surround the fixing screw 9. In this example,
The elastic member 34 is an umbrella-shaped washer formed of a steel plate, but a leaf spring or a coil spring having another shape may be used.

In such a structure, by loosening the fixing screw 9 and turning the eccentric cam 33, the terminal plate 7 can be rotated around the shaft support portion 30 along the document reading and scanning direction. Also, by tightening the fixing screw 9,
The eccentric cam 33 can be fixed, and the terminal plate 7 pressed by the flange 32 of the eccentric cam 33 can be vertically displaced along the axis of the shaft support 30 in accordance with the tightening force of the fixing screw 9. .. Therefore, by displacing the terminal board 7 in two directions, the position of the halogen lamp 6 in the original reading scanning direction and the vertical direction can be adjusted. Moreover, by tightening one type of fixing screw 9, the halogen lamp 6
It is possible to reliably fix the movements of the terminal plate 7 connected to the in the original reading scanning direction and the vertical direction at one time.

Furthermore, an embodiment of the invention of claim 4 is shown in FIG.
Or, it demonstrates based on FIG. The bent piece 29 formed on the terminal plate 7 includes a long hole 31 extending in the width direction of the contact glass 1, two locking pieces 36 extending along the inner side edge of the long hole 31 in the longitudinal direction, and a small piece. A hole 35 is formed.
A shaft support portion (shaft) that holds the small hole 35 rotatably and slidably on the upper surface of the terminal block 4 facing the bending piece 29.
30 are erected. An eccentric cam 37 is fitted in the long hole 31. The eccentric cam 37 has a fitting hole 38 whose center is eccentric with respect to the center of its outer circumference (see FIG. 11). Further, a swing cam 39 fixed to the upper surface of the terminal block 4 by a fixing screw 9 is provided. The swing cam 39 has a groove having a diameter larger than the space between the fitting portion 40 rotatably fitted in the fitting hole 38 of the eccentric cam 37 and the locking piece 36. 41
And two inclined surfaces 42 that are inclined in a direction in which the protruding length from the end surface of the fitting portion 40 continuously changes in the rotational direction (see FIG. 10). Furthermore, FIG.
As shown in FIGS. 12 and 13, on the upper surface of the terminal block 4, two protrusions 43 that are in contact with the inclined surface 42 of the swing cam 39 are formed.

In such a structure, by loosening the fixing screw 9, the swing cam 39 and the eccentric cam 37 can be coaxially rotated in arbitrary directions. Since the pivotal movement of the swing cam 39 at this time changes the contact position of the inclined surface 42 of the swing cam 39 with respect to the protrusion 43 of the terminal block 4,
The swing cam 39 can be displaced in the axial direction together with the terminal plate 7. Further, the terminal plate 7 can be displaced in a direction orthogonal to the axis of the eccentric cam 37 by the rotational movement of the eccentric cam 37. By displacing the terminal plate 7 in two directions at this time, the position of the halogen lamp 6 in the document reading / scanning direction and the vertical direction can be adjusted. Since the bending piece 29 of the terminal plate 7 is displaced by the rotational movement of the eccentric cam 37, the position of the locking piece 36 with respect to the swing cam 39 also changes, but the locking piece 36 does not move. Since it is locked in the groove 41 with play, it does not hinder the displacement operation of the terminal plate 7.

Further, the fixing screw 9 is tightened to fix the swing cam 39, and the bent piece 29 of the terminal plate 7 is sandwiched and fixed between the upper surface of the groove 41 of the swing cam 39 and the terminal base 4. The rotation of the eccentric cam 37 can be prevented by the edge of the elongated hole 31 of the terminal plate 7. Therefore, by tightening one type of the fixing screw 9, the movement of the terminal plate 7 to which the halogen lamp 6 is connected in the original reading scanning direction and the vertical direction can be reliably fixed at one time.

[0021]

According to the first aspect of the invention, the scanner body is provided so as to be movable in the document reading direction relative to the document placing surface on which the document is placed, and both ends are connected to the terminal plates. A light source arranged to face the document mounting surface, a terminal block fixedly provided on the scanner body, an elongated sliding hole formed in the terminal plate, and the sliding hole inserted into the sliding hole. A fixing screw for fixing the terminal plate to the side surface of the terminal block, a pointer portion formed on the terminal plate, and a first member formed on the scanner body by being positioned at a regular position of the pointer portion in the document reading scanning direction. And the second peep hole formed in the scanner body positioned at the normal position of the pointer portion in the vertical direction, the terminal plate to which the light source is connected by loosening the fixing screw. Is displaced in the longitudinal direction of the sliding hole In addition, the terminal plate can be rotated about the axis of the fixing screw, and by combining the displacement of the terminal plate in the linear direction and the displacement in the rotation direction at this time, the terminal plate can be moved in the direction perpendicular to the original reading scanning direction. It can be displaced, and the position of the terminal board can be easily determined by aligning the pointers with the first and second peep holes during this displacement, and by tightening one type of fixing screw. The movement of the terminal plate in the two directions of the original reading scanning direction and the vertical direction can be fixed at the same time, so that the position of the light source can be adjusted accurately and easily at one time.

According to a second aspect of the present invention, the scanner main body is provided so as to be movable in the original reading direction relative to the original placement surface on which the original is placed, and both ends are connected to terminal plates to provide the original. The light source arranged to face the mounting surface, the terminal block fixedly provided on the scanner body, the groove for rotatably holding a fulcrum shaft erected from the side surface of the terminal plate, and the document platen. A plurality of terminal holding bodies having elongated holes extending in the width direction of the mounting surface, and the terminal holding bodies provided on the terminal base are rotatable about a rotation axis perpendicular to the fulcrum shaft and the rotation axis thereof. An eccentric cam fitted in the elongated hole having a shaft supporting portion slidably held in the axial direction and a collar for holding the terminal holding body between the terminal block and the eccentric cam. Since the lever eccentric cam is composed of a fixing screw that fixes the terminal block to the terminal block, By loosening the screw, the fulcrum shaft of the terminal plate is released from the holding force of the terminal holding body, the terminal plate is rotated around the fulcrum shaft, and the eccentric cam is turned to rotate the terminal holding body around the shaft supporting part. Can be rotated together with the terminal plate, and the displacement of the terminal plate around the fulcrum shaft and the displacement of the terminal holding plate around the shaft support portion orthogonal to the axis of the fulcrum shaft cause the terminal plate to be the light source. With it, it can be displaced in two directions, the original reading scanning direction and the vertical direction, and by tightening one type of fixing screw,
The terminal holding body can be held and fixed between the collar of the eccentric cam and the terminal block, and the terminal plate can be fixed by holding the fulcrum shaft between these terminal holding bodies, thus adjusting the position of the light source. It has the effect that it can be performed accurately and easily at one time.

According to a third aspect of the present invention, the scanner main body is provided so as to be movable in the original reading direction relative to the original placement surface on which the original is placed; A light source arranged to face the mounting surface, a terminal block fixedly provided on the scanner main body, and the terminal plate provided on the terminal block being rotatable and slidable in the direction of the rotation axis. A shaft support portion, an elastic member interposed between the terminal block and the terminal plate, an elongated hole formed in the terminal plate along the width direction of the document placing surface, and the terminal. The plate is composed of an eccentric cam that has a collar that presses the plate toward the terminal block and is fitted into the elongated hole, and a fixing screw that penetrates the eccentric cam and fixes the eccentric cam to the terminal block. , By loosening the fixing screw and turning the eccentric cam, turn the terminal plate around the shaft support. In addition, the eccentric cam is fixed by tightening the fixing screw, and the terminal plate pressed by the flange of the eccentric cam is displaced along the axis of the shaft support according to the tightening force of the fixing screw. By displacing the terminal plate in two directions, the position of the light source in the original reading scanning direction and the vertical direction can be adjusted, and moreover, by fixing one type of fixing screw, the terminal to which the light source is connected can be adjusted. This has the effect that the movements of the plate in the original scanning direction and the vertical direction can be reliably fixed at one time.

According to a fourth aspect of the present invention, the scanner main body is provided so as to be movable in the original reading direction relative to the original placement surface on which the original is placed, and both ends are connected to terminal plates to provide the original. A light source arranged to face the mounting surface, a terminal block fixedly provided on the scanner main body, and the terminal plate provided on the terminal block being rotatable and slidable in the direction of the rotation axis. The shaft supporting portion, the long hole formed in the terminal plate along the width direction of the document placing surface, the eccentric cam fitted in the long hole, and the eccentric cam rotatably fitted. And a groove engaged with a part of the terminal plate, and an inclined surface inclined in a direction in which a protruding length from one end of the fitting portion continuously changes in the rotation direction. And a protrusion formed on the terminal block and brought into contact with the inclined surface of the swing cam. Since the rocking cam is formed by a fixing screw that penetrates through the rocking cam and fixes the rocking cam to the terminal block, the rocking cam and the eccentric cam can be rotated in arbitrary directions by loosening the fixing screw. The pivoting movement of the swing cam at this time changes the contact position of the inclined surface of the swing cam with respect to the protrusion of the terminal block, so that the swing cam can be axially displaced together with the terminal plate. The terminal plate can be displaced in the direction orthogonal to the axis of the eccentric cam by the rotating motion of the eccentric cam, and the displacement of the terminal plate in two directions adjusts the position of the light source in the scanning direction and the vertical direction. In addition, the swinging cam is fixed by tightening the fixing screw, and the terminal plate is sandwiched and fixed between one surface of the groove of the swinging cam and the terminal block, and the edge of the long hole of the terminal plate is fixed. Prevents the eccentric cam from rotating. It can be, therefore, by tightening the one type of fixing screws, it has the effect of the original reading scanning direction and the vertical direction of movement of the light source terminal plate connected can be reliably fixed at once.

[Brief description of drawings]

FIG. 1 relates to an embodiment of the invention of claim 1, (a) is a vertical sectional front view, and (b) is a partial horizontal sectional view.

FIG. 2 is a perspective view of a terminal plate.

FIG. 3 relates to an embodiment of the invention of claim 2, (a) is a partially cutaway plan view, and (b) is a longitudinal side view.

FIG. 4 is a perspective view of a terminal plate.

FIG. 5 is an exploded perspective view showing a support structure for a terminal holding body.

6 (a) is a plan view and FIG. 6 (b) is a vertical side view according to an embodiment of the invention of claim 3. FIG.

FIG. 7 is an exploded perspective view showing a support structure for a terminal board.

FIG. 8 is an exploded perspective view according to an embodiment of the invention of claim 4;

FIG. 9 is a perspective view of a terminal plate.

FIG. 10 shows a swing cam, (a) is a plan view,
(B) (c) is a side view seen from a different direction.

FIG. 11 shows an eccentric cam, (a) is a plan view,
(B) is a side view.

FIG. 12 is a vertical sectional side view showing a support structure for a terminal board.

FIG. 13 is a plan view showing a part of the support structure for the terminal board.

[Explanation of symbols]

 1 Document Placement Surface 2 Document 3 Scanner Main Body 4 Terminal Block 6 Light Source 7 Terminal Plate 8 Sliding Hole 9 Fixing Screw 14 Pointer Part 15 First Peeping Hole 16 Second Peeping Hole 19 Support Shaft 20 Groove 21 Long Hole 24, 25 Terminal Holding Body 26 Shaft Support 27 Collar 28 Eccentric Cam 30 Shaft Support 31 Long Hole 32 Collar 33 Eccentric Cam 34 Elastic Member 37 Eccentric Cam 39 Swing Cam 40 Fitting 41 Groove 42 Inclined Surface 43 Projection

Claims (4)

[Claims] 1. A scanner body, which is movably provided in a document reading direction relative to a document placing surface on which a document is placed, and both ends of which are connected to terminal plates to face the document placing surface. The arranged light source, a terminal block fixedly provided on the scanner body, an elongated sliding hole formed in the terminal plate, and the terminal plate inserted into the sliding hole to attach the terminal plate to the terminal block. A fixing screw for fixing to the side surface, a pointer portion formed on the terminal plate, a first peep hole formed on the scanner main body at a regular position of the pointer portion in the document scanning direction, and a vertical direction. The document illumination light source holding device, which is characterized in that it comprises a second peep hole formed in the scanner body by being positioned at a regular position of the pointer portion in the. 2. A scanner main body provided so as to be movable in a document reading direction relative to a document placing surface on which a document is placed, and both ends thereof are connected to terminal plates to face the document placing surface. A light source arranged, a terminal block fixedly provided on the scanner body, a groove for rotatably holding a fulcrum shaft erected from a side surface of the terminal plate, and a width direction of the document placing surface. A plurality of terminal holding bodies each having a long hole extending along the terminal holding body, and the terminal holding bodies provided on the terminal base are rotatable about a rotation axis orthogonal to the fulcrum axis and slide in the direction of the rotation axis. An eccentric cam fitted to the elongated hole having a collar that holds the terminal holding body between the shaft supporting portion that holds freely and the terminal block, and the eccentric cam that penetrates the eccentric cam. Document illumination light source holding characterized by comprising a fixing screw for fixing to the terminal block apparatus. 3. A scanner main body provided so as to be movable in a document reading direction relative to a document placing surface on which a document is placed, and both ends thereof are connected to terminal plates to face the document placing surface. A light source arranged, a terminal block fixedly provided on the scanner body, and a shaft support portion provided on the terminal block for holding the terminal plate rotatably and slidably in the direction of the rotation axis thereof. An elastic member interposed between the terminal block and the terminal plate, an elongated hole formed in the terminal plate along the width direction of the document placing surface, and the terminal plate on the terminal block. An original document illumination including an eccentric cam that has a flange that presses to the side and is fitted into the elongated hole, and a fixing screw that penetrates the eccentric cam and fixes the eccentric cam to the terminal block. Light source holding device. 4. A scanner main body provided so as to be movable in a document reading direction relative to a document placing surface on which a document is placed, and both ends thereof are connected to terminal plates to face the document placing surface. A light source arranged, a terminal block fixedly provided on the scanner body, and a shaft support portion provided on the terminal block for holding the terminal plate rotatably and slidably in the direction of the rotation axis thereof. A long hole formed in the terminal plate along the width direction of the document placing surface, an eccentric cam fitted in the long hole, and a fitting portion rotatably fitted in the eccentric cam. And a rocking cam having a groove that is locked to a part of the terminal plate and an inclined surface that is inclined in a direction in which the protruding length from one end of the fitting portion continuously changes in the rotating direction. A protrusion that is formed on the terminal block and abuts the inclined surface of the swing cam, and a protrusion that penetrates the swing cam. A document illumination light source holding device comprising a fixing screw that is passed through and fixes the swing cam to the terminal block.