JPH03164730A - Original cassette - Google Patents

Abstract

PURPOSE:To make it possible to set an original fixed on a film mount in an original cassette and to improve work for reading an image by demarcating a recessed part where the film mount is housed on a plate material for mounting and directly forming an aperture part for reading an original image. CONSTITUTION:The original cassette 100 is provided with a frame 106 formed in a nearly rectangular shape and the plate material 112 for mounting which is mounted to the rectangular aperture part 110 demarcated in the center part of the frame 106. A pair of nearly rectangular recessed parts 120 is provided on the plate material 112 for mounting and the film mount 130 is housed in the recessed part 120. In such a case, the rectangular aperture parts 120a is formed to penetrate at a position opposed to the original S for reading when the film mount is housed in the recessed part 120. The original S can be irradiated with reading light through the aperture part 120a. Since the original S is positioned and fixed in the original cassette 100 just by setting the film mount 130 in the recessed part, workablity is improved in the case of reading the image.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a document cassette that is suitably used when setting a document on which image information is recorded in a reading section of an image reading device.

[Prior Art] In the fields of printing, plate making, etc., for the purpose of streamlining work processes and improving image quality, a manuscript is created as a film master by electrically processing image information and recording it on the manuscript. An image scanning reading/reproducing system is known.

The image reading device, which is the main body of the image scanning reading/reproducing system, transports a document positioned and stored in a document cassette, such as a developed film, to a reading section, where the document cassette carrying the document is transferred as a secondary document. While being conveyed in the scanning direction, main scanning is performed using a light beam, thereby reading image information two-dimensionally.

The present applicant has already proposed a new document cassette for use in such an image scanning reading/reproducing system, and has already filed a patent application.

In this case, the document cassette has a pair of support plates, at least one of which is made of a transparent material, and the light reflected or transmitted from the document through the transparent support plates is
Image information is read by being photoelectrically converted by an optical/electrical conversion element such as a CCD provided in the reading section.

In this case, for example, an original such as 135 (35 mm) film, 120 or 220 (Pro 12) film, etc. may be stored in the film mount. Therefore, when obtaining a reproduced image from this type of original, the operator must first remove the original from the film mount, set it in the original cassette, read the image information, and then return the original to the film mount and return it to the user. The need arises.

[Problems to be Solved by the Invention] In this way, the work process of taking out a document from a film mount, loading it into a cassette, reading the image carried on the document, and then loading it into the film mount again requires a lot of work in reading the document. There is a problem that work efficiency decreases,
In particular, when the film mount is made of paper, the document is adhered to the film mount with an adhesive such as glue, which makes the task of removing the document from the film mount even more complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a document cassette in which a document fixed to a film mount can be set as is in the document cassette, which is easy to handle and has further improved workability for reading images carried on the document. It's about doing.

[Means for Solving the Problems] In order to achieve the above object, a document cassette according to the present invention includes: a cassette frame; and a recessed portion for accommodating a film mount for supporting a sheet-like document; and the document cassette is fixed to the cassette frame. and a means for fixing the mounting plate to a cassette frame, the mounting plate having an opening through which the document carried by the film mount faces.

[Function] In the document cassette according to the present invention, a recess for accommodating a film mount is defined in the mounting plate constituting the document cassette, and a document image is directly read on the document in the film mount further accommodated in the recess. An opening is formed therethrough to introduce light for the purpose.

Therefore, reading light can be irradiated onto the surface of the document through the opening while the film mount supporting the document is housed in the recess.

[Embodiments] Next, preferred embodiments of the document cassette according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an image reading device 10 for reading an image of a document, preferably a developed film, using a document cassette according to the present invention.

The device IO includes a cassette attachment/detachment section 12, an identification mechanism 20 for identifying the type of document S, a photographing and feeding mechanism 28 for withdrawing the document cassette 100, and a sub-scanning mechanism 36 for sub-scanning the document S. A trimming mechanism 44 that moves forward and backward in a predetermined direction to trim the document S, a positioning mechanism 56 that positions and fixes the document cassette 100, and an image reading unit 6 that reads image information recorded on the document S.
It is mainly composed of 8.

The cassette attachment/detachment section 12 is provided near one end side of the upper part of the casing 14 of the apparatus IO, and the document cassette 100 is configured to be able to be introduced into and taken out of the casing 14 via the cassette attachment/detachment section 12.

On the other hand, the identification mechanism 20 is disposed near the cassette insertion opening 16 provided close to the cassette attachment/detachment section 12, and is driven in response to an output signal from the identification mechanism driving sensor 22. In this case, the identification mechanism 20 includes a light-emitting section 24 and a light-receiving section 26 as sensors, which are arranged opposite to each other with the document cassette 100 in between. It has a plurality of LEDs that are arranged corresponding to the plurality of holes provided in the light receiving section 26 and emit light in the direction of the light receiving section 26. The light receiving section 26 is equipped with a plurality of phototransistors that receive light emitted from the LED. Note that a cassette detection sensor 18 is provided near the cassette insertion opening 16 to detect whether or not the original cassette 100 is set in the apparatus 10.

The conveyance mechanism 28 includes a frame 30 and a plurality of guide rollers 32 supported by the frame 30, each of which has an arcuate cross section. As shown by broken lines, grooves 104a and 10 in the shape of a 7 are formed in the original cassette 100.
It engages with the inner wall surface of 4b by point contact. Therefore, the document cassette 100 can be transported in a predetermined direction by the guide roller 32.

A plurality of conveyance rollers 34 are supported on the frame 30 along the conveyance direction of the document cassette 100.
06 and is rotated by a rotation transmission mechanism 31 consisting of a belt and a roller under the biasing action of a rotation drive source 29.

Note that one end of the transport mechanism 28 is disposed near the identification mechanism 20, and the other end extends above a rotary table 54, which will be described later.

The sub-scanning mechanism 36 is configured to displace the document table 38 in the direction of arrow X in FIG. , the document table 38 can be moved forward and backward in the sub-scanning direction.

The document table 38 is provided with a trimming mechanism 44 . The trimming mechanism 44 has a rotational drive source 46 attached to the document table 38, and the rotational operation of the rotational drive source 46 is transmitted to the trim table 50 via the ball screw 48, so that the trim table 50 performs the trimming process. It moves forward and backward in the direction (direction perpendicular to the sub-scanning direction). In addition, the ball screw 48
One end is connected to a rotational drive source 46, and this ball screw 48 extends in the trimming direction, and is attached to the trim base 5.
The other end is rotatably supported on the document table 38 while being engaged with a nut member (not shown) provided at the document table 38 .

The positioning mechanism 56 has a rotational drive source 58 fixed to the lower surface of the trim base 50, and is rotated by a locking plate 62 that is rotated via a cam plate 60 that is attached to the rotation shaft of the rotational drive source 58. Perform positioning and fixing of 100. The positioning mechanism 56 is configured to rotate the original with respect to the trim table 50 and the original with respect to the rotary table 54 provided in the rotation mechanism 52 that rotates the original by a predetermined angle.
It is driven when positioning and holding 100.

The image reading unit 68 has a light source 64 that extends in the main scanning direction that is substantially orthogonal to the arrow The light is input to the optical/electrical converter 72 such as the above. The image reading unit 68 includes an imaging lens 76 that can move forward and backward with respect to the optical axis direction under the driving action of a rotational driving source 74, and a light beam that can move forward and backward with respect to the imaging lens 76 under the driving action of a rotational driving source 78. An electrical conversion section 72 is provided. Note that the optical/electrical converter 72 converts the color image information recorded on the reading document S into R, G
, B are read as image information corresponding to each color.

Next, as can be understood from FIGS. 2 and 3, 100 is a frame 106 formed in a substantially rectangular shape.
and a rectangular opening 1 defined in the center of the frame 106.
10.

Note that the document cassette 100 is provided with a cassette identification section 102 for identifying the type of the document S to be read. This cassette identification section 102 may preferably be a bar code, but it has a plurality of vertical holes so that it can be converted into a bit signal by a sensor consisting of a light emitting element and a light receiving element to determine the type of document S to be read. There may be.

Here, as understood from FIG. 3, the mounting plate 112 is provided with a pair of substantially rectangular recesses 120, and the size of the recesses 120 is determined by the size of the film to which the reading document S is fixed. The size is selected to be slightly larger than the size of the mount 130. Film mount 130 has recess 120
contained within.

In this case, a film mount 130 is provided in the recess 120.
A rectangular opening 120a is formed through the opening 120a at a position facing the original surface of the reading original S when the reading original S is housed, and the light emitted from the light source 64 through this opening 120a is used for reading. After being irradiated onto the document surface of the document S, the light reaches the image reading section 68 .

Note that since the reading document S is generally read while being placed on a transparent supporting glass plate, the optical system used for image reading is also set accordingly. That is, the focal length of the optical system is set assuming that there is a support glass for placing the original. In the present invention, since this support glass is not used, the depth of the recess 120, that is, the height H in FIG. The position at which reading is performed and the position at which the film mount 130 is accommodated are set so that they are at the same focal point when viewed optically.

Furthermore, a circular recess 120b is formed in the mounting plate 112 and communicates with the recess 120.
20b, as understood from FIG.
A ring-shaped leaf spring 140 that expands in the Y direction is housed. Therefore, due to the return force of the leaf spring 140, the recess 12
The film mount 130 housed in the film mount 130 is always urged in the direction of the arrow P in FIG.

Note that a rectangular recess 120C is provided in the mounting plate 112 that faces the recess 120b and defines the recess 120, and this recess 120C is used by the operator to take the film mount 130 in and out of the recess 120. It is large enough to allow you to insert your finger etc. This recess 120C allows the film mount 130 to be easily removed.

Next, the mounting plate 112 is provided with a leaf spring 150 that presses and fixes the housed film mount 130. As can be understood from FIG.
b are integrally formed in three protruding places, and the base 150a
includes a locking protrusion 150c that prevents the leaf spring 140 from rotating.
is formed on its underside. That is, the leaf spring 150
When fixed as will be described later, the locking protrusion 150c enters the gap between the two inwardly bent ends of the leaf spring 140, and acts to prevent the leaf spring 140 from rotating.

In this case, two stop holes 150d are formed in the base body 150a, and corresponding to these stop holes 150d,
A stopper hole (not shown) is formed in the mounting plate 112. Therefore, the leaf spring 150 is fixed to the mounting plate 112 by screwing the screw 160 into the screw hole of the mounting plate 112 through the fixing hole 150d (see FIG. 2).

In this way, the plate spring 150 is mounted on the mounting plate 112.
Since a ring-shaped leaf spring 140 is provided, the film mount 130 is fixed by being pressed from the P direction and the Q direction in FIG.

As explained above, in this embodiment, the document cassette 10
A mounting plate 112 is fixed to an opening 110 formed in the frame 106 of No. 0. That is, the mounting plate 1
A film mount 130 is housed in the recess 12.
An opening 120a is formed in the interior of the film mount 130 to correspond to the reading document S mounted on the film mount 130.

Therefore, the operator can easily position and fix the reading original S by simply storing the film mount 130 on which the reading original S is installed in the recess 120 of the original cassette 100. For this reason, the film mount 130
Since it is possible to read images, etc. without removing the original from the scanner, the efficiency of this type of work is further improved.

Note that the position, shape, number, etc. of the concave portion 120 can be formed in accordance with the size of the reading document S set in the document cassette 100. For example, as shown in FIG. As can be understood, when a large-sized document S for reading is set in the document cassette 100, or as understood from FIG. It can be selected as appropriate depending on the case.

[Effects of the Invention] As understood from the above description, the document cassette according to the present invention has a concave portion formed to accommodate a film mount for fixing a sheet document to a mounting plate provided on a cassette frame, In addition, the document in the film mount accommodated therein is positioned in the opening defined in the recess. Therefore, the reading light can be irradiated onto the document through the opening.

In other words, the operator simply sets the film mount in the recess provided in the mounting plate, and the document is positioned and fixed in the document cassette, which has the unique effect of improving work efficiency when reading images, etc. is obtained.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic explanatory diagram of an image recording apparatus using a document cassette according to the present invention, FIG. 2 is a plan view of a document cassette in a preferred embodiment of the present invention, and FIG. 3 is an implementation shown in FIG. FIG. 4 is a perspective view of a leaf spring provided on the mounting plate shown in FIG. 2, and FIGS. 5 and 6 show other embodiments of the present invention. It is a schematic configuration explanatory diagram shown. IO... Image reading device 12... Cassette attachment/detachment section 20... Identification mechanism 28... Transport mechanism 3
6... Sub-scanning mechanism 44... Trimming mechanism 56... Positioning mechanism 68... Image reading unit
...Cassette identification section...Mounting plate material...Film mount, 150...Leaf spring 06...Frame 50b

Claims (1)

[Claims] (1) Consisting of a cassette frame, a mounting plate in which a recess for accommodating a film mount for carrying a sheet-like original is formed and fixed to the cassette frame, and means for fixing the mounting plate to the cassette frame. A document cassette, characterized in that the mounting plate material is provided with an opening through which the document carried by the film mount faces.