JPS63233656A - Original tray used in original reader - Google Patents

Abstract

PURPOSE:To improve inconvenience such that an original is entangled or rubbed, by setting the plane of an original placing part side as the focal point reference plane of an original reader in the transparent part of a cover plate supported pivotally in such a way that it can be rocked freely on a substrate having the original placing part and sandwiches an original by turning in one direction. CONSTITUTION:Since the plane of the original placing part 90 side of the transparent part 910 is set as the focal point reference plane, it is easily performed to read the original plane of the original 92 being held with an original tray 9. Therefore, it is possible to improve a problem of discrepancy between the focal point of a read head 2 and the original plane of the original 92 due to shaking at the time of carrying the original tray 9 even when the the range of focal point of the read head is narrow. Also, since the original 92 is read by using the original tray 9, the inconvenience such that the original 92 is entangled or rubbed can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a document tray used in a document reading device that reads a document. INDUSTRIAL APPLICATION This invention can be utilized for the original reading device used for a facsimile, a copying machine, an image input device, etc.

(Prior Art) As a document reading device, document reading devices disclosed in Japanese Patent Laid-Open No. 60-150381 and Japanese Patent Laid-Open No. 60-150379 are known. The document reading device disclosed in Japanese Patent Application Laid-Open No. 60-150381 has a housing, a reading head movably provided in the housing, and a conveyance section for moving the reading head as main components.

(Problems to be Solved by the Invention) This document reading device tends to be large in size because the reading head moves during reading.

The document reading device disclosed in Japanese Unexamined Patent Application Publication No. 150379/1987 includes a housing, a reading head fixed to the housing, a feed roller rotatably provided to the housing, and a drive unit that drives the feed roller. are the main components.

Although problems such as increased size can be improved with this document reading device, there are other problems such as the document being easily entangled with the feed roller due to static electricity, and the document being rubbed by the feed roller.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to provide an original 8i that solves the problem that the original gets entangled in the feed or is rubbed by the feed roller.
To provide a document tray used in a reading device.

[Structure of the Invention] (Means for Solving the Problems) A document tray according to the present invention includes a substrate having a document placement portion on which a document is placed, and a portion of which is pivotably supported on the substrate. , a lid plate that holds the original on the original document tray by swinging in one direction and has a transparent part at least in part; It is characterized by being used as a focal reference plane of the reading device.

The document tray according to the present invention is composed of a substrate and a cover plate. Here, the substrate is the document aut1 on which the document is placed.
Has 5. It is preferable that the document placement section is made of an elastic material such as polyurethane foam. In this way, since the document placement section has a resilient force, the document placed on the document placement section can be brought into pressure contact with the back surface of the transparent part of the cover plate, and the document is placed on the focal point reference plane of the reading device. This is because it is easy to match the original surfaces.

Preferably, at least one of the substrate and the lid member has a visual signal section that is read by a visual sensor of the document reading device. Providing a visual signal section in this manner is advantageous for automatically detecting the insertion of the document tray, the start of conveyance of the document tray, and the end of conveyance of the document tray.

In addition, in its cross section, the lid plate includes a lid portion having a transparent portion, and a conveying portion extending downward from both ends of the lid portion, contacting the feed roller of the original II reading device, and being conveyed by the feed roller. , is preferably configured.

The substrate can be formed of a hard material such as a metal plate.

(Example) (Configuration of Example) An example in which a document tray according to the present invention is applied to a small automobile facsimile is shown in FIGS. 1, 8, and 9.

For convenience of explanation, a document reading apparatus using a document tray according to this embodiment will be explained first.

(Original reading 1fff) As shown in FIG. 3, the original reading device used in this embodiment includes a housing 1, a reading head 2, and a transport
It consists of 3 and.

In Fig. 3, the housing 1 has a thin box shape with a long depth and a short vertical direction so that it can be used in the interior of a car where installation is limited to an instrument panel, etc., and has an insertion hole. 10, a tray storage section 11, and a guide rail 12.

The insertion hole 10 is a document insertion hole, and opens into a front portion 15a of a swing bracket 15 that is pivotally supported on the housing 1 via a hinge portion 14 so as to be swingable in the vertical direction. Opening of the swing bracket 15 is detected by a microswitch 154. The tray storage section 11 is a space formed in communication with the insertion hole 10. A stopper portion 11a is provided at the rear of the tray storage section 11. As shown in FIG. 2, the guide rail 12 has an angular cross-sectional shape, and has a guide surface 120 extending from the insertion port 10 side to the tray storage section 11. The guide rail 12 is the seventh
As shown in the figure, the tray guides 13 are arranged in two horizontal lines in the housing 1, and below the guide rails 12, a tray guide 13 having a hole 13a is arranged.

The read head 2 is located behind the JlifJJ bracket 15 and has a mounting plate 2 in the housing 1, as shown in FIG.
It is held through 0. This reading head 2 is for reading a document to be transmitted, and is located between two guide rails 12, 12 as shown in FIG. The reading head 2 has a 1-magnification imaging lens array optical element, an original illumination light source, and an equal-belief element type scanning reading element. As shown in FIG. 3, reflective photointerrupters 23 and 24 are provided near the reading head 2 as visual sensors.

As shown in FIG. 7, the conveyance section 3 is for conveying the original to be transmitted, and includes a feed roller device t30 as a feed section, a stepping motor 31, and a filter roller device W130 that transfers the driving force of the stepping motor 31. A gear mechanism 32 for transmitting the signal to the user, and a spring member 33 shown in FIG.
and a leaf spring member 34 shown in FIG. As shown in 2nd @ 1, the feed roller assembly "a30" includes a horizontal shaft type feed roller main body 300 and a bracket 301 having flanges 307a at both ends that pivotally support the feed roller main body 300.
has. Here, the flange 301a of the bracket 301 is swingably supported on the housing 1 via a hinge pin 302, as shown in FIG. The swing of the flange 301a is caused by a bottle-shaped stopper 3 fixed to the housing 1.
03. Note that the hinge bin 302 also serves as a support shaft for a gear 325, which will be described later. As shown in FIG. 7, the stepping motor 31 is attached to a mounting plate 310 and fixed to the housing 1. The gear mechanism 32 includes a gear 320 that meshes with a gear 310 of the stepping motor 31.
, gears 321.322.323.324.325. The gear 325 meshes with the gear 300a at the end of the feed roller body 300.

The spring member 33 shown in FIG. 3 is for urging the bracket 301 downward, and the spring member 33 shown in FIG.
It consists of 31. As shown in FIG.
It is located above 2.

Next, the printer mechanism built into the housing 1 will be explained. This printer mechanism is provided at the front of the housing 1 as shown in FIG. 3, and includes a thermal head 6 built into the housing 1, a platen roll 7 rotatably held by a swing bracket 15, a print paper roll holding section 8 held by a swing bracket 15;
It is equipped with The platen roll 7 is driven by the driving force of the stepping motor 70 shown in FIG.
02.703.704, it rotates and conveys the paper. As shown in FIG. 4, the thermal head 6 is held by a screw 60a on a bracket 60 biased by a coil spring 61, and is swingable by a pin 62. Swinging of the thermal head 6 is controlled by a stopper shaft 63. The thermal head 6 is urged by the elastic force of a coil spring 61 and is brought into pressure contact with the platen roll 7, and is given tension suitable for printing. A thermal paper roll 80 is attached to the print paper roll holding section 8 . In addition, an odd interrupter 2 is attached to the reflective type.
4 detects a paper-out state.

(Original Tray) The original tray 9 used in the Kinomu 111 example will be described with reference to FIGS. 1, 8, and 9. This manuscript tray 9
As shown in FIG. 1, it consists of a substrate 90 and a lid plate 91. The substrate 90 is made of polycarbonate as a hard material, and has an original W1 portion 900 on which an original 1i92 is placed. [i! The publication loading section 900 is formed into a sheet shape from polyurethane foam as an elastic material.
This is for pressing the original 92 against the back surface of the cover plate 91. The cover plate 91 is made of a stainless steel plate, the outer periphery of the stainless steel plate, 5
As shown in FIG. 9, which is a cross-sectional view of the transparent part 910 made of polycarbonate, a lid 1911 and a conveying part 912. Here, the conveyance section 912 includes the lid section 91
The guide rail 1 extends downward from both ends of the guide rail 12 in the width direction, and comes into contact with the guide surface 120 of the guide rail 12 .

As shown in FIG. 1, one end 91a of the lid plate 91 is rotatably supported on the base plate 90 by a hinge 901. As shown in FIG. A latch 913 is formed at the other end 91b of the M plate 91. The latch 913 is engaged with the stop portion 902 of the board 90 . In FIG. 8, visual signal portions 915 are provided on both sides 914 in the width direction on the front side of the lid plate 91. As shown in FIG. The visual signal section 915 is for detecting the start and end of conveyance of the document tray 9, and as shown in FIG. 8, it consists of a colored section 915a and a non-colored section 915b1. Note that the visual signal section 915 is hard coated to prevent wear.

(Operations of the Embodiment) Next, a method of using the facsimile according to the embodiment will be described.

First, when sending, as shown in Figure 1, the original 9
2 is placed on the original 8I mounting portion 900 of the substrate 90, and its state (
At step 1, the cover plate 91 and the substrate 90 are aligned, and the latch 913 is fixed to the stop portion 902, thereby holding the original 92. At this time, Hara [9
2, the transparent portion 9 of the cover plate 91 is moved by the elastic force of the document placement portion 900.
10(7) Close to the back side.

With the original [92] held in the original tray 9 in this way,
As shown in FIG. 3, the original tray 9 is inserted from one end side through the insertion hole 10 of the housing 1, and pushed into the tray storage section 11. Then, the reflective photointertaper 2
3 is the visual signal i! of the original tray 9. ! 915 is detected and a signal is issued. This signal causes the stepping motor 31
driving is started. Therefore, the driving force of the stepping motor 31 is transmitted to the feed roller main body 300 via the gears 320 to 325 of the gear mechanism 32, and the feed roller main body 300 rotates. As a result, the document tray 9 is conveyed into the tray storage section 11 along the guide surface 120 of the guide rail 12. Then, the original tray 9
When the document is conveyed, the reflective photointerrupter 23 detects the visual signal section 915 at the other end of the document tray 9, the stepping motor 31 stops, and the document tray 9 stops at the document scan reading start position.

As described above, when the document tray 9 is guided along the guide surface 120 of the guide rail 12, as shown in FIG. The document tray 9 is pressed against the guide surface 120 of the guide rail 12 by the member 34 . Therefore, a gap is created between the reading head 21 of the reading head 2 and the cover plate 91 of the document tray 9.

In this way, since the originals j to 12 are pressed against the guide surface 120 of the guide rail 12, the focus of the reading head 2 is on the back surface of the transparent part 910 of the cover plate 91, that is, the surface on the side of the original reading and placing section 900. Therefore, it matches the document surface of document 92 in documents 1 to 9.

As mentioned above, the document tray 9 is at the starting position d for scanning the document.
While the machine is stopped at , the user operates the scanning/reading start switch. Then, the stepping sweater 31 is driven, the feed roller main body 3oo is reversed at a constant speed, and the document tray 9 is moved onto the guide surface 12 of the guide rail 12.
The document 92 is conveyed toward the insertion port 10 while being pressed against the document 92 along the document tray 9 , and the reading head 2 starts reading the document 92 in the document tray 9 . At this time, since the original 1-ray 9 is pressed against the guide surface 120 of the guide rail 12, the focus of the reading head 2 is on the back surface of the transparent portion 910 of the cover plate 91, that is, the original reading a! It matches the surface on the η portion 900 side, and therefore matches the document surface of the document 92 in the document tray 9. Note that the read information is sent out to the telephone line.

When the reflective photointerrupter 23 detects the visual 4g portion 915, the end of document scanning is detected.

Then, the stepping motor 31 is driven in a certain step, rotates the feed roller main body 300 to the maximum, and stops the document tray 9 at a position where it is completely separated from the feed roller main body 300. The invader takes out the document tray 9 from the insertion hole 10.

Next, the reception will be explained. The information received through the telephone line is printed on the thermal paper 80a of the roll 80 by the thermal head 6. And printed thermal paper 80
a is discharged from the discharge port 16 by the rotation of the platen roll 7.

When replacing the paper, the latch release lever 151 is manually moved in the direction of the arrow shown in FIG. 6 against the spring 151a. Then, the latch 150 is pushed by the latch release pin 151 and swings via the shaft 150a, and is pushed by the latch release lever 151 to release the launch 15.
0 is removed from the latch pin 100, the swing bracket 15 can be swung downward about the hinge portion 14 as shown in FIG. At this time, as is clear from FIG. 5, the pin 152 is guided along the guide groove 101. When the swing bracket 15 swings in this way, the print paper roll holding section 8 is exposed as shown in FIG. 4, so the roll 80 is rotated as appropriate. The ms bracket 15 is replaced by the elastic force of the spring 153.
When the latch 150 and the latch pin 100 are restored, the latch 150 and latch pin 100 are locked.

(Effects of Embodiment) As explained above, in the document tray 9 according to the present embodiment, the surface of the transparent portion 910 on the document placement section 90 side is used as the focus reference plane, so that the document tray 9 holds the document. Manuscript 9
Easy to read the 0 document side.

Therefore, even if the focal range of the reading head is narrow, it is possible to improve the problem of mismatch between the focal point of the reading head 2 and the original surface of the original 1i92, which is caused by rattling when transporting the original tray 9. can.

Further, in this embodiment, since the original 92 is read using the original tray 9, problems such as the original 1192 being entangled or rubbed can be improved.

Further, since the substrate 90 of the original tray 9 used in this embodiment has a certain degree of rigidity, it can also be used as an underlay when creating an original 92.

By the way, the original tray 9 consists of a substrate 90 and a lid plate 91.
In this case, it is possible to make the lower surface of the substrate 90 contact the guide surface 120 of the guide rail 12, but in this case, the dimensional tolerance of the substrate 90 in the thickness direction and the dimensional tolerance of the cover plate 91 overlap, and the document tray This increases the dimensional tolerance of the document tray 9, which may make it difficult for the focus of the reading head 2 to match the document surface of the document 92 when the document tray 9 is read while being conveyed. In this regard, in this embodiment, as shown in FIG. 9, the lower surface of the conveyance section 912 extending downward from both ends of the lid section 91 as described above is pressed against the guide section 1210 of the guide rail 12@. Since it is set to 9, the board 9
The dimensional tolerance in the thickness direction of 0 and the dimensional tolerance of the cover plate 91 do not overlap, so that it becomes easier to align the surface of the original 92 with the focal position of the reading head 2.

(Other Embodiments) 10th Other Embodiments of the Document Tray According to the Present Invention
This will be explained with reference to the figures. The document tray of this example has basically the same structure as the document tray of the above-described embodiment, and therefore provides the same functions and effects. However, a rack portion 95 is formed at the side end portion of the document tray 9 according to this embodiment.

Then, the pinion 39 is rotated by a stepping motor, and the original tray 9 is conveyed. In this case as well, the document tray 9 is pressed against the guide portion of the guide rail 12 by a spring member (not shown).

[Effects of the Invention] As explained above, with the document tray according to the present invention, problems such as entanglement and rubbing of documents can be improved.

Furthermore, in the document tray according to the present invention, if the document placement portion is made of an elastic material such as foamed polyurethane, the document can be pressed against the transparent portion of the lid plate by its elastic force.
This is advantageous in aligning the document surface of the document with the focus.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to 77 units,
Fig. 1 is a perspective view of the original tray with the document tray open, Fig. 2 is a perspective view of the vicinity of the feed roller device, Fig. 3 is a sectional view of the entire facsimile machine, and Fig. 4 is a perspective view of the document tray when replacing paper. Fig. 5 is a cross-sectional view of the entire hook millimeter at different parts, Fig. 6 is an explanatory view of the opening 111IA structure of the swing bracket, and Fig. 7 is a horizontal view of the facsimile. FIG. 8 is a plan view of the original tray, FIG. 9 is a cross-sectional view of the original tray, and FIG. 10 is a perspective view of main parts according to a different embodiment.

Claims (5)

[Claims] (1) A board having a document placement section on which a document is placed, one end of which is swingably supported on the substrate, and the document on the document placement section is clamped by rotation in one direction. and a cover plate having at least a transparent part, and the transparent part of the cover plate is characterized in that a surface on the side of the document placement section is used as a focus reference plane of the document reading device. A document tray used in a document reading device. (2) The document placement section of the substrate is made of an elastic material such as foamed polyurethane, and the document placed on the document placement section is pressed against the back surface of the transparent section of the cover plate. A document tray used in the document reading device according to scope 1. (3) The document tray used in the document reading device according to claim 1, wherein at least one of the substrate and the lid member has a visual signal portion read by a visual sensor of the document reading device. (4) In its cross section, the lid plate includes a lid portion having a transparent portion, and a conveying portion that extends downward from both ends of the lid portion, contacts the feed roller of the document reading device, and is conveyed by the feed roller. A document tray used in a document reading device according to claim 1, comprising: (5) The document tray used in the document reading device according to claim 1, wherein the substrate is made of a hard material.