JPS613561A - Picture information reader - Google Patents

Abstract

PURPOSE:To make the titled reader small in size and light in weight by providing a read means scanning a picture information suport, and reading its picture information and an operating section operating the reading means to move the reading means up to the back side of the operating section. CONSTITUTION:An original scanning section 6 activated based on the operation of the operating section 2 is provided in a main body 1, in which a light source 7 lighting an original 3 placed on an original platen 4, a lens 8 and a photoelectric converting section 9 are provided. Then a guide 11 and a rail 12 are provided to the lower side of the operating section 2, then the original scanning section 6 comes under the operating section 2. Since the space under the operating section 2 i small, the reader is miniaturized in scanning direction as a whole, that is, in the forward/backward direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image information reading device used in, for example, an image forming device.

[Technical background of the invention and its problems]

In the image information reading device of the above type, as shown in FIG. 7, the original on the original placing table a is illuminated by the light sources e and 6, and the reflected light is sent to the lens d.

There is a device in which a reading section f, which is led to a photoelectric conversion section through a photoelectric conversion section d, is moved along the lower surface of a document mounting table a to scan the document and read its image information.

However, in this type of device, the operating section 2 for operating the reading section fYt is not provided independently in a separate frame on the front side of the document table a, so the reading section f cannot be moved to the bottom of the operating section g. It has an unbelievable configuration. For this reason, the space below the operating section g becomes wasted space, which increases the size and weight of the device.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and an object thereof is to provide an image information reading device that can be made smaller and lighter.

[Summary of the invention]

In order to achieve the above object, the present invention moves a reading means for scanning an image information support held by a holding means and reading the image information to the back side of an operating section for operating the reading means. It is characterized by having a structure that follows.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. In FIG. 2, reference numeral 1 denotes a main body, and an operating section 2 is provided at the front of the upper surface of the main body 1. Further, on the upper surface of the main body 1, a document placing table 4 is provided on which a document (image information support) 3 is placed, and a document holding cover 5 is provided on the document placing table 4 so as to be openable and closable.

Inside the main body 1, as shown in FIGS. 1 and 3,
A fine scanning section 6 is provided which operates based on the operation of the operating section 2, and includes a light source 7.7 for illuminating the original 3 placed on the original placing table 4; ] A configuration including a lens 8.8 disposed on the optical path of the light reflected from the illuminated original 3, and a photoelectric conversion section 9 that receives and photoelectrically converts the light that has passed through the lens 8.8. It has become. Further, this document scanning section 6 is supported by a carriage 10, and this carriage 10 is installed between a guide 11 and a rail 12. Then, it is reciprocated in the front and back direction via a seat ion guild 14 by the driving force of a motor 13 provided in the rear part of the main body 1. Hikoo, power to the light source 7.7 is supplied from an inverter 15 installed at the rear of the main body 1 through a flat cable 16, and image information is converted into an analog signal by a photoelectric converter 9 through lenses 8, 8. After that, it is converted into a digital signal by an amplifier and a converter 17, and then sent to a flat cable 16.
is sent to the recording device via.

Further, the guide 11 and the rail 12 are provided below the operating section 2, and the document scanning section 6 is configured to move below the operating section 2 due to the breakage. and,
The lower part of this operation section 2, that is, the front side is the document scanning section 6.
At the home position, the document scanning section 6 attaches a lens 8, a lens 8,
8 to focus. In addition, rail 12
A carriage stopper 19 is provided on the front side of the
Collision between the light source 7 and the front frame 20 is prevented.

The control circuit of the original scanning unit 6 will be explained based on FIG. 4. The control circuit of the original scanning unit 6 will be explained based on FIG.
The analog signal that is serially extracted is sent to the amplifier 22.
is amplified by The signal amplified by this amplifier 22 is separated into white (W), yellow (Y), and cyan (C) color signals by an analog switch 24 that operates in response to pulses from a pulse generator 23.
The A/D converter 25 operates on the 4 pulse from the ψ converter 23,
The analog signal from the converter 24 is digitally converted and sent to a buffer memory 26, which stores the signal digitized by the digital converter 25 at the address indicated by the address counter 27. In this way, one line of color data read by the photoelectric converter 9 is converted and stored in the buffer memory 26 for each color.

According to the above configuration, the document scanning section 6 is moved to below the operation section 2. Since the configuration is as shown in FIG. 5 (FIG. 5 (a) is the conventional device, and FIG. 5 (b) is the device according to the present invention)
, L*<Ll, and the space 28 below the operation unit 2
gayo) becomes smaller.

Therefore, if the scanning distance Lo is the same, the overall size can be reduced in the scanning direction, that is, in the front-back direction, and at the same time, the weight can be reduced.

In the above embodiment, a device in which two lenses 8.8 are arranged in a 7-shape is described, but the present invention is not limited to this. For example, as shown in FIG. 8 is arranged horizontally, and the reflected light from the original 3 is reflected by the mirror 30, and is transmitted to the photoelectric conversion unit 9 via the lens 8t.
It may also be applied to devices designed to lead to In this case, it is possible to further reduce the thickness.

〔Effect of the invention〕

As explained above, according to the present invention, there is provided a holding means for holding an image information support, a reading means for scanning the image information support held by the holding means and reading the image information, and a reading means for scanning the image information held by the holding means. Since the reading means is configured to move to the rear side of the operating section, excellent effects such as reduction in size and weight can be achieved.

[Brief explanation of drawings]

Figures 1 to 5 show one embodiment of the present invention.
The figure is a sectional view showing the main parts, Figure 2 is a perspective view of the exterior, Figure 3 is a side view showing the internal structure, Figure 4 is a control circuit, and
Figure 5 is an explanatory diagram for comparison with the conventional device, and Figure 6 is an explanatory diagram for comparison with the conventional device.
The figure is a perspective view showing the internal structure of another device to which the present invention is applied, and FIGS. 5 and 7 are schematic sectional views showing a conventional example. 2... Operation unit, 3... Image information support (original), 4
. . . Original mounting table, 6. Original scanning unit, 18. Alignment scale. Applicant's agent Patent attorney Takehiko Suzue Figure 2 Figure 4 Figure 5 (a) (b)

Claims (3)

[Claims] (1) It is equipped with a holding means for holding an image information support, a reading means for scanning the image information support held by the holding means and reading the image information, and an operation section for operating the reading means. . An image information reading device, characterized in that the reading means is configured to move to the rear side of the operating section. (2) The image information reading device according to claim 1, wherein the home position of the reading section is the back side of the operating section. (3) The holding means has a positioning scale for the image information support at its end, and the reading section is configured to face the back side of the positioning scale when in the home position. The image information reading device according to item 1 or 2.