JPS61260761A - Image information reader - Google Patents

Abstract

PURPOSE:To apply scanning only at a desired range by adopting the constitution that only an area between a scale provided to an optical carriage and an original scale is scanned. CONSTITUTION:In copying a part (range y) of an original G, the original G is set on original glass 2 in matching with the original scale 40, the 1st carriage 11 is placed at a point B by depressing the copy area setting key of an operation section and a copy button is depressed. A lamp 6 is lighted and the 1st and 2nd carriages 11, 12 are moved toward the original scale 40 and the range (y) of the original G is scanned, the reflected light from the original G is formed on a CCD 10 via the 1st-3rd mirrors 7-9 and a lens 14 to read the image information. Thus, it is not required to scan uselessly all of the copy-enable areas and the copy time is reduced.

Description

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

[Technical background of the invention and its problems]

Generally, in a scanner copying device, an original is set on an original glass, and the original is scanned while being irradiated with light from a rung, and the reflected light is imaged on a photoelectric conversion element via a mirror and a lens to create an image. It is readable. Then, based on this image reading information, the thermal head of the printer section is made to generate heat to transfer the image onto the paper.

Incidentally, the lamp and mirror are attached to a carriage, and the document is scanned by movement of the carriage.

However, in the past, the carriage was scanned by moving the carriage across the maximum copyable area, so if the area to be copied is small, for example, if the area to be copied is small, or if the document is small, copying time is wasted. This has the disadvantage that it requires a lot of energy, and also consumes a lot of power, especially in the case where the carriage is driven by dry batteries or the like, it consumes a lot of battery power.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide an image information reading device that can scan only a desired copy area.

[Summary of the invention]

In order to achieve the above object, the present invention has a configuration in which a scale is provided on an optical carriage, the scale is moved to a desired part by movement of the optical carriage, and only the area between this scale and the document scale is scanned. By doing so, only the desired range of the copyable area can be scanned.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a main body of the apparatus, and a document glass 2 serving as a document table is provided on the upper surface of the device main body 1, and this document glass 2 is opened and closed by a document cover 3. A document scale 40 for positioning the document G is provided on one side of the document glass 2 . In addition, the device main body 1
As shown in FIG. 2, a scanner part 4 is provided below the document glass 2, and a printer part 5 is provided at the rear of the scanner part 4. .

The scanner part 4 is constructed as shown in FIG. That is, 6 in the figure is a lamp, and the original G placed on the original glass 2 is irradiated with light from this run f6.

The reflected light from the original G is reflected from the first to third mirrors 7.8.
．． 9 and lens 14 to CCDI O,
The image is now readable. The lamp 6 and the first mirror 7 are mounted on a first carriage 11, and the second and third mirrors 8, 9 are mounted on a second carriage 12. As shown in FIG. 4, the first and second carriages 11 and 12 are slidably supported by a guide rail 13 at one end, and supported by a guide plate 17 at the other end via rollers 16a and 16b. ing. Further, one end side of the first carriage 11 is connected to a drive belt 19 via a connecting piece 18, and this drive belt 19 is passed between a drive roller 20 and an idle row 221. The drive roller 20 is rotationally driven by a drive motor 22. Further, a frame 23 is integrally formed on one end side of the second carriage 12, and this frame 23 has a pair of pulleys 3.
0a and 30b are arranged apart from each other. These pulleys 30a.

A wire 25 is passed through 30b, and this wire 2
One end of 5 is fixed to a fixed part 26, and the other end is biased by a spring 27.

The connecting piece 18 is also connected to the middle part of this wire 25 and integrated therewith.

Further, a scale 29 is provided on the upper surface of the first carriage 11.

On the other hand, the drive motor 22 is rotated in forward and reverse directions by pressing a copy methane 32 of an operating section 3, which will be described later, so that the drive belt 19 is driven. A connecting piece 18, a wire 25. Pulley 3
0a.

first and second carriages 11.12 via 30b
is reciprocated along the guide rail 15 and guide plate 17 to scan the original G. At this time, the second carriage 12 is run at half the speed of the first carriage 1 in order to keep the optical path length constant.

Further, the printer section 5 has a platen 37, as shown in FIG.
They grow attached to each other so that they are separated from each other. In addition, the platen 3
A paper P and an increment (not shown) are interposed between the thermal head 7 and the thermal head 38.

The thermal head 38 is a CCD of the scanner part 4.
Heat is generated based on the image information read by the printer 10, and incremental ink is transferred onto the paper P for printing.

On the other hand, an operating section 31 is provided on the front surface of the apparatus main body 1, as also shown in FIG. That is, numeral 32 in the figure is a copy lead, and on the side of this copy lead 32, there are, in order, a density adjustment key 33, a number of copies setting key 34, a segment display section 35, and a pair of copy area setting keys 39a, 39.
b is provided.

By the suppressing operation of the copy area setting key 39a, the drive motor 22 of the carriage 11.12 is rotated in the forward direction, and the carriage 11.1 is rotated in the forward direction as shown in FIGS. 4 and 7.
2 in the direction of arrow a, and by pressing the other copy area setting key 39b, the carriages 11 and 12 are moved.
The drive motor 22 of the carriage 11.12 is rotated in the opposite direction.
It is designed to move in the direction of the arrow.

For example, if you want to copy a part of the document G as shown in FIG. 6 (range y shown in FIG. 8), first place the document G on the document glass 2 as shown in FIG. Set the original according to the scale 40, and then move the first carriage 11 to the copy area setting key 39a of the operation section 3.
Alternatively, by pressing 39b, it is positioned at point B (at a distance y from the original scale 40) in FIG. When the copy button 32 is pressed in this state, the lamp 6 is emitted and the first and second carriages 11, 12 are moved a distance y from the position of point B toward the document scale 40, and the document G is Range y is scanned. Then, the reflected light from the original G passes through the first to third mirrors 7.8.9 and the lens 14 to the CCD 1.
The image is often focused on the object and the image information is read. Based on this read image information, the thermal head 38 of the printer section 6 generates heat, and the image is transferred onto the paper P as shown in FIG.

As described above, according to this embodiment, only a desired area of the copyable area can be scanned, and unnecessary scanning can be eliminated.

Furthermore, since the scale 29 is provided on the first carriage 11, there is no need for a special mechanism for moving the scale 29, and the structure can be simplified.

Note that the present invention is not limited to the above embodiment,
Of course, various modifications can be made within the scope of the gist.

〔Effect of the invention〕

As explained above, the present invention has a structure in which an optical carriage Ic scale is provided, this scale is moved to a desired part by movement of the optical carriage, and only the area between this scale and the original scale is scanned. Unlike conventional methods, there is no need to wastefully scan the entire copyable area, which shortens the copying time and reduces power consumption.Especially when the drive source is a battery, it can last longer, making it more economical. It is true.

Further, since the scale is provided on the optical carriage, there is no need for a special mechanism for moving the scale, and there is an effect that the structure is not complicated and the scale is easy to visually observe.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view showing an image forming apparatus, FIG. 2 is a perspective view showing its internal structure, FIG. 3 is a front view showing the scanner section, and FIG. The figure is a perspective view, FIG. 5 is a perspective view of the operation section, FIG. 6 is a plan view of the document, FIG. 7 is a plan view of the document placement section, and FIG. 8 is a copy area for the document. 9 is a plan view showing a state in which the scale is positioned, FIG. 10 is a plan view showing a copied sheet, and FIG. 11 is a plan view showing a copy scanning state. 2... Original glass (original table), 40... Original scale, G... Original, 11.12... Optical carriage,
29...Scale.

Claims (1)

[Claims] A document is set on a document table according to a document scale, and the document is scanned with light by moving an optical carriage to read the image. An image information reading device characterized in that the image information reading device is configured to move the scale to a desired part and scan only the area between this scale and the document scale.