JPS6342275A - Handy image reader - Google Patents

Abstract

PURPOSE:To eliminate an influence due to an individual difference as much as possible and to obtain a stable scan speed in a subscanning direction by driving by a motor in which a travelling roller is internally mounted in a main body case. CONSTITUTION:The main body case 2 is placed on an original surface 1, and a switch 17 is pressed, thereby, the light source of an LED array 6 is lighted, at the same time, the motor 10 is rotated, the travelling roller 7 is rotated through a speed reducer 11, reduction gears 14-16 and the main body case 2 is moved in parallel to the sub-scanning direction at a prescribed set speed to read the original. In the other rotation axis of the motor 10, a rotary encoder disk 12 is rotated, pulses corresponding to the number of rotations are generated by a photoelectric transfer device 13 to form the moving pulse to the sub- scanning direction and synchronize a main scanning and the sub-scanning.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention provides a method for reading and scanning objects such as W and manuscripts.
Is'3-t-2+ is a handy image reader that scans the main body of the reader by hand-held.

[Conventional technology]

The fifth part is a diagram showing the main parts of a conventional handheld image reader, and this is the main body case (2) of the reading device.
Inside, from the bottom, insert the dustproof glass (3), the rod 1/sensor 1/a (4), the main scanning CCD, and the image sensor (
In addition to installing dustproof glass (
3) and the rod 1/lens array (4).
(6) A part of the outer circumferential surface of the traveling roller (7) is disposed in the main body case (2) in parallel with these optical system parts. , the main body 1-1-space (
2) Placed at the bottom! -7) Place the lower surface of the dust-proof glass (3) on the original surface 11) and move the whole body manually in the sub-scanning direction in the direction of the arrow shown in the AI state. 1
, 7, and the rotation of this running port (7) rotates the τ rotary encoder disk (9) via the belt (8) to extract read pulses in the sub-scanning direction.

Next, the operation will be explained.
? 1i (1) When reading the aria, place the above main body case (2) device on the bamboo at the starting position of the relevant aria.9.
・Press the switch (not shown) provided at F21 J-, and then manually move the entire frame in the sub-scanning direction (arrow A) while reading. At this time, linearity in the sub-scanning direction is maintained by a running roller (7) installed parallel to the OCT image sensor (5) shown in FIG. 5, and the rotation of this running roller (7) is controlled by a bell! = (8) is used to transmit the signal to the rotary encoder disk (9).

Movement pulses in the sub-scanning direction are generated to synchronize main and sub-scanning.

[Problem that the invention seeks to solve]

The operation of the conventional Handy Image League is performed as follows.9The weight of the entire main body case, the pressure of the presser foot in the hand, the operating time in the sub-scanning direction, the speed unevenness at that time, etc. (Operation 1 for meandering, etc. due to hand shaking etc.)
The drawback was that the individual differences in Nota's smoker's power and operability were inferior. .

This invention solves the following problems:
cormorant.

Eliminate as much as possible the influence of individual differences in operator sorting L7
, J that can obtain a stable scan speed m'' in the sub-scanning direction
- When it comes to sea urchins, it's worth the money.Z), l.

[Means for solving problems]

J suspension θ of this invention:. Inside the main body case ((Built-in motors for both axes, a reducer is installed on one of the rotating shafts, and its output) 1 ql + all J, close to the document surface, 17 strokes, 1 sura rotating shaft The reduction gear tooth J1f is engaged through the gears, and the rotary encoder disk with the rotary encoder disk with equally spaced [ ] molars is mounted [all rotated at the same time]. Then, the rotation output pulse of the rotary encoder disk is taken out from the photoelectric converter.

[Function] The pot C of this invention runs! By controlling the speed reduction ratio of the 9-diameter motor of the suit, or the like, the traveling roller is relatively unaffected by manual presser pressure, and moves in parallel on the document surface at high speed with high torque.

〔Example〕

An embodiment of the present invention will be described above. That is, in FIGS. 1 to 3, parts that are the same as those in the prior art shown in FIGS. 4 and 5 will be designated with the same -@ symbols and redundant explanation will be omitted. In the case of this invention, as shown in Fig. 3, the motor (1Fm (2500m) inside the main body case (2)
RPM) has rotation 1III (10a) (1
0b) All gears are lowered, and one rotating shaft (10a) is equipped with a reducer +111 (reduction ratio: /,,)e on the same axis.

and a reduction gear (a61) provided on the rotating shaft (7a) of a traveling roller (12 mm in diameter), for example, through a reduction gear (i4 fil f) provided on its output shaft. (7) is supported by bearings (7b) at both ends thereof.

A rotary encoder disk 2 is integrally attached to the other rotating shaft (10b) of the motor a1. A photoelectric converter fi3 is further provided for detecting the rotation cover and the lasing caused by the rotation of -11. Others 1
ηU: Manual switch attached to the outer surface of the main body case (2). (1gl is pulled out from the main body case (2), is a power cord, and has one or more features.

In the above configuration, as shown in FIG. 4, place the main body case (2) in your hand on the document surface (1) to be read. By pressing the above switch ([η°) with your fingertip, this is connected to the power supply, and the
) is at point tTl, and each of the above-mentioned optical system members becomes operational. At the same time, the internal motor a1 rotates L2.
The speed reducer 111) is connected to the diameter L7. Further, the traveling roller (7) rotates at, for example, 1100 RP via the reduction gear a010.

At a predetermined set speed pt, the main body case (2) (in the sub-scanning direction) is moved in parallel in the direction of the arrow shown in FIG. 1 to read the entire document.
On the other rotating shaft of 1, the rotary encoder disk 03 shown in FIG. The main and sub-scans can be synchronized by ζ'h.

Although the description has been given below of a single front wheel drive system for all sub-scanning directions, similar effects can be obtained with a rear wheel drive system. The minor shaft of the above optical system member (
It is also possible to use a system in which the running rollers are centered on B) and have nine front and rear wheels.

〔Effect of the invention〕

Since the handy image league of the present invention is constructed as described above, it is possible to obtain a handy image league that is relatively unaffected by individual differences among operators and has high resolution and high speed processing capabilities.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the main parts showing one embodiment of the Handy Image League of the present invention, Fig. 2 is a front view, Fig. 3 is a side view partially shown in cross section, and Fig. 4 is a state in use. FIG. 5 is a longitudinal cross-sectional view of the main parts of a conventional non-day image league. Note that 9 (1) in the figure is the original surface, +2 + Fi main case, (
5) is a CCD image sensor 1 (7) is a running roller,
al is a motor, al is a speed reducer, (1 is a 1-talien 1-da disk, a41 (IunH reduction gear).

Claims (3)

[Claims] (1) A reading device in which an optical system member including a CCD image sensor that performs main scanning is installed inside the main body case, is provided parallel to the image sensor, and a part of it is exposed on the bottom of the main body case. A handy image reader comprising a running roller that runs in the reading direction while in close contact with the surface of a document, and the running roller is driven by a motor built into the main body case. (2) The handy image reader according to claim 1, wherein the rotation of the motor is transmitted to the traveling roller via a speed reducer provided on the rotating shaft. (3) A speed reducer is provided on one rotating shaft of the motor, and the rotation of the output shaft is transmitted to the traveling roller via a reduction gear, and the other rotating shaft of the motor is provided with a movement pulse corresponding to the rotation. 3. A handy image reader according to claim 1, wherein a rotary encoder disk for generation is attached, thereby synchronizing main and sub-scanning.