JP2005333348A - Image reading apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image reading apparatus capable of reading an original whose area is equal to and more than the area of platen glass without the need for extending the area of the platen glass resulting in upsizing the image reading apparatus. <P>SOLUTION: The image reading apparatus 2 provided with: the platen glass 21 fitted to an upper face of a reading original placing platen 20; and a platen cover 22 for openably covering the platen glass 21, includes an automatic original reader 25 whose long side directional length is nearly the same as the long side directional length of the platen glass 21 that is located at one side of the platen cover 22 in a short side direction, and the automatic original reader 25 is configured to capture the original in the short side direction of the platen cover 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is an image including a platen glass attached to the upper surface of a reading table, a platen cover that covers the platen glass so as to be freely opened and closed, and an automatic document reader attached to one side of the platen cover. The present invention relates to a reading device.

  An image reading apparatus and an image recording apparatus are vertically arranged in the main body of an image reading and recording apparatus such as a copying machine and a facsimile machine. The image reading apparatus is used as a flat bed type scanner and a sheet feed type scanner. Is known (for example, see Patent Document 1).

  As shown in FIGS. 5 to 7, the image reading apparatus 102 of the small image reading and recording apparatus 101 has substantially the same size as the A4 size document on the upper surface of the reading table 120 provided on the upper part of the apparatus main body 110. A platen glass 121 is attached, and an operation unit 129 is provided on one side in the short direction of the reading mounting table 120, so that the image reading and recording apparatus 101 is horizontally long with respect to a user standing on the operation unit 129 side of the apparatus main body 110. Has been placed. A platen cover 122 that covers the platen glass 121 is detachably attached to the rear side end in the short direction of the reading table 120, and an automatic document reader (hereinafter referred to as ADF) is provided on one side in the longitudinal direction of the platen cover 122. ) 125 is attached. A paper feed tray 123 extends obliquely upward in the longitudinal direction of the platen cover 122 from the inlet 125 a of the ADF 125, and a paper discharge tray 124 is placed on the upper surface of the platen cover 122 below the paper feed tray 123. Is formed.

  A pair of document guides 126 and 126 are provided on both sides of the platen cover 122 in the short direction on the paper feed tray 123, and one or both of the pair of document guides 126 and 126 is the short side of the platen cover 122. The document guides 126 and 126 are configured to be slidable in the direction so as to open to the short side width of the A4 size document at the maximum.

  A reading device 128 is arranged on one side in the longitudinal direction of the reading table 120 with its longitudinal direction facing the short direction of the platen glass 121. The reading device 128 is placed on the platen glass 120 in the reading table 120. The glass 121 is configured to scan in the longitudinal direction.

  With the above configuration, when the image reading apparatus 102 is used as a flat bed type scanner, a document is placed on the platen glass 121, and the reading apparatus 128 is placed on one side in the longitudinal direction within the reading table 120. Scanning is performed from the home position of the scanning section in the longitudinal direction of the platen glass 121, and when used as a sheet feed type scanner, an A4 size document is placed on the paper feed tray 123 in the short direction of the platen cover 122. The reading device 128 is set in the hand direction, the leading end on the short side of the document is inserted into the intake port 125a of the ADF 125, and the reading device 128 is fixed to the home position on one side in the longitudinal direction in the reading table 20. In this state, the original is taken into the ADF 125 from the short side and read. That.

Japanese Patent Laid-Open No. 11-215295

However, the image reading apparatus 102 cannot read A4-size originals such as B4-size originals or A3-size originals on the ADF 125 or the platen glass 121, and can read these A4-size originals or more. Then, as shown in FIG. 8, the area of the platen glass on the reading mounting table must be enlarged to enlarge the size of the image reading apparatus 202, and the size of the image reading and recording apparatus 201 must be increased. .
Accordingly, in view of this point, the present invention provides an image reading apparatus capable of reading an A4 size or larger document without enlarging the area of the platen glass and increasing the size of the image reading apparatus as a whole. In general, an object of the present invention is to provide an image reading apparatus capable of reading a document larger than the area of the platen glass without enlarging the area of the platen glass and increasing the size of the image reading apparatus as a whole. .

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
First, according to a first aspect of the present invention, there is provided an image reading apparatus comprising: a platen glass attached to an upper surface of the reading table; and a platen cover that covers the platen glass so as to be freely opened and closed. An automatic document reader having a longitudinal length substantially equal to the longitudinal length of the platen glass is provided on one side in the lateral direction, and the automatic document reader is configured to take the document in the lateral direction of the platen cover. To do.

  According to another aspect of the present invention, an operation unit is provided on one side in the longitudinal direction of the reading table.

  Alternatively, as described in claim 3, an operation unit is provided on a side of the reading table on the side of the anti-automatic document reading device in the short direction.

Since the present invention is configured as described above, the following effects can be obtained.
First, according to the first aspect of the present invention, the length in the short direction is the longitudinal direction of the platen glass in the automatic document reading device without enlarging the area of the platen glass and increasing the size of the image reading device as a whole. A document having a size substantially the same as the length can be read, and convenience is improved with a compact configuration.
Further, when a document having the same size as the platen glass of the image reading device is read by the automatic document reading device of the conventional image reading device, the document is taken in the longitudinal direction and the image is read. When a document of the same size as the platen glass of the image reading device is read by the automatic document reading device of the reading device, the document is taken in the short direction and the image is read. This shortens the processing speed.

  Further, the invention described in claim 2 can achieve the same effect as that of the invention described in claim 1 and can place the image reading apparatus in a narrow space.

  According to the invention described in claim 3, the same effect as that of the invention described in claim 1 can be obtained, and the image reading apparatus can be placed in a narrow space.

  Next, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a main body 10 of an image reading and recording apparatus 1 such as a copying machine or a facsimile is mounted and fixed on a paper feeding apparatus 5 having a paper feeding cassette. 2 and the image recording device 3 are arranged vertically, and the image reading device 2 is configured to read a document as a flatbed type scanner and to read a document as a sheet feed type scanner.

  As shown in FIG. 1 to FIG. 3, the image reading apparatus 2 includes a reading mounting table 20 provided on the upper part of the apparatus main body 10 and an A4 size attached to the upper surface of the reading mounting table 20. A platen glass 21 that is substantially the same size as the original, and a platen cover that is rotatably supported by a side end in the longitudinal direction or a side end in the lateral direction of the reading table 20 so as to open and close the platen glass 21. 22 and an operation unit 29 provided on one side in the longitudinal direction of the reading table 20, and the image reading and recording apparatus 1 having the image reading device 2 is a user standing on the operation unit 29 side of the apparatus main body 10. It is arranged vertically.

  The length in the longitudinal direction of the platen glass 21 is formed to be slightly longer than the long side width of the A4 size document or the long side width of the A4 size document, and the short direction length of the platen glass 21 is the short side width of the A4 size document. The area of the platen cover 22 facing the platen glass 21 is slightly larger than that of the platen glass 21.

  Further, an automatic document reading device (hereinafter referred to as ADF) 25 is attached to one side of the platen cover 22 in the short direction, and the longitudinal length of the ADF 25 is substantially the same as the longitudinal length of the platen glass 21. Thus, the ADF 25 is configured to take a document in the lateral direction of the platen cover 22.

The ADF 25 has a paper feed tray 23 extending obliquely upward from the intake port 25a in the short direction of the platen cover 22 and both sides of the platen cover 22 on the paper feed tray 23 with respect to the longitudinal direction. A pair of document guides 26, 26 provided, and one or both of the pair of document guides 26, 26 is configured to be slidable in the longitudinal direction of the platen cover 22, and between the document guides 26, 26. Is configured to open up to the long side width of an A4 size original.
A paper discharge tray 24 from which a document read by the ADF 25 is discharged is formed on the upper surface of the platen cover 22 below the paper feed tray 23.

  A reading device 28 is arranged on one side in the short direction of the reading table 20 with the longitudinal direction of the reading device 28 facing the longitudinal direction of the platen glass 21, and the longitudinal length of the reading device 28 is the platen glass 21. The reading device 28 is configured to scan in the lateral direction of the platen glass 21 within the reading table 20.

  With the above configuration, when the image reading apparatus 2 is used as a flat bed type scanner, a document is placed on the platen glass 21 and the reading apparatus 28 is placed on the home in one side in the short direction in the reading apparatus 20. Scanning is performed by scanning from the position in the short direction of the platen glass 21. On the other hand, when the image reading apparatus 2 is used as a sheet feed type scanner, an A4 size original is set on the paper feed tray 23 with the longitudinal direction thereof set in the longitudinal direction of the platen cover 22, and the long side of the original is placed. The reading device 28 is fixed to the home position on one side in the short side direction in the reading table 20 while the document is inserted into the ADF 25 from the long side. It is configured to read in and read.

  According to this configuration, the length of the short direction in the ADF 25 is substantially the same as the length of the platen glass 21 in the ADF 25 without enlarging the area of the platen glass 21 and increasing the size of the image reading apparatus 2 as a whole. Therefore, it is possible to read even an A3 size original, and the convenience is improved with a compact configuration.

Further, when an A4 size original is read by the ADF 125 of the conventional image reading apparatus 102, the original is taken in the longitudinal direction and an image is read, whereas an A4 size original is read by the ADF 25 of the image reading apparatus 2 of the present invention. Is read, the original is taken in the short direction and the image is read, so that the time required for reading is shortened and the processing speed is improved as compared with the prior art.
Furthermore, the image reading and recording apparatus 1 having the image reading apparatus 2 capable of reading an original having an area approximately twice the area of the platen glass 21 can be placed in a narrow space.

  The operation unit 30 having a display panel and various operation keys may be provided on the side opposite to the ADF 25 in the short direction of the reading table 20 as shown in FIG. The image reading and recording apparatus 1 having the image reading apparatus 2 capable of reading a document having an area approximately twice the area of the glass 21 can be placed in a narrow space.

The embodiment of the present invention has been described by taking the image reading and recording apparatus 1 such as a copying machine or a facsimile as an example. However, the present invention can also be applied to a single image reading apparatus such as a scanner equipped with an ADF. .

1 is a front view of an image reading and recording apparatus 1 according to the present invention. 1 is a plan view of an image reading and recording apparatus 1 according to the present invention. FIG. 2 is a plan view of the image reading and recording apparatus 1 according to the present invention with the platen cover 22 removed. The top view of the image reading and recording apparatus 1 which concerns on another embodiment of this invention. 1 is a front view of a conventional image reading and recording apparatus 101. FIG. FIG. 3 is a plan view of a conventional image reading and recording apparatus 101. FIG. 2 is a plan view of a conventional image reading and recording apparatus 101 with a platen cover 122 removed. FIG. 6 is a plan view of an image reading and recording apparatus 201 that can read a conventional A3 size document.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image reading and recording apparatus 4 Fixing unit 7 Jam access cover 41 Heat roller 42 Press roller 43 1st frame 43b Base receiving part 44 2nd frame 44c 1st guide groove 44d 2nd guide groove 44e Chamfer 44f Chamfer 49 Common shaft 50 Nip release lever 50a Head portion 50b Base portion 50c Guide portion 50d Contact portion 50e Arm portion 50f Nip release surface 50g Nip surface 50h Long hole 52 Coil spring 53 Spring receiver 70 Frame 70a First engagement portion 70b Second engagement portion 70c Guide Part

Claims (3)

A platen glass attached to the upper surface of the reading table;
A platen cover that covers the platen glass so as to be freely opened and closed;
An image reading apparatus comprising:
An automatic document reading device having a longitudinal length substantially the same as the longitudinal length of the platen glass is provided on one side portion of the platen cover in the short direction, and the automatic document reading device places the document in the short direction of the platen cover. A document reading apparatus characterized in that the document reading apparatus is configured to capture the document.   The document reading apparatus according to claim 1, wherein an operation unit is provided on one side in the longitudinal direction of the reading table.   The document reading apparatus according to claim 1, wherein an operation unit is provided on a side portion of the reading table on the side of the anti-automatic document reading apparatus in the short direction.

Images