JPS62294373A - Handscanning device - Google Patents

Abstract

PURPOSE:To improve operability, by forming a cabinet long lengthways, and with a small bottom area, and providing a subscan pulse generating means which generates a pulse corresponding to subscan speed in the inside of the cabinet, and a photoelectric transducing means which starts read scan by the pulse. CONSTITUTION:Assuming that the width of the cover 10 of a bottom plane is set as (d), and the height of the cover 10, as (h), (h) is set enough larger than (d), and an operator performs the read scan by grasping the side plane D of the cover 10, and moving it in the direction of arrow head A. And since an encoder disk 3 is also rotated at the same speed by the rotation of a manually operated detecting ring 1, and the input light of a photoelectric transducer 5 can be obtained by making continue intermittently the irradiation of a light emitting apparatus 4, and repeated pulses at the speed corresponding to the subscan speed can be obtained at the photoelectric transducer 5. Also, since the start pulse SP of a photoelectric transducer 9 is generated corresponding to the distance of subscan, it is always possible to obtain a regulated level of scanning line density even how the subscan speed changes.

Description

DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention The present invention relates to a so-called hand scanning device in which an object to be read and scanned (such as a document) is scanned by holding a reading scanning unit in the hand.

Conventional facsimiles and the like are large devices, and therefore the objects to be read and scanned are limited to thin, sheet-like originals and several types of standard shapes.

For this reason, conventional facsimiles cannot read and scan information such as stickers printed or pasted on the surface of immovable objects, stickers printed or pasted on the surface of three-dimensional packages, and thick books. I couldn't.

The present invention has solved these problems, and it is possible to easily read and scan objects that could not be scanned conventionally, make the reading scanning surface compact, and improve operability. The purpose is to provide an excellent hand scanning device.

Hereinafter, the present invention will be explained in detail based on the drawings. 1st
The figure is a front sectional view of the hand scanning device showing one embodiment of the hand scanning device according to the present invention, and FIG. 2 is a side sectional view thereof. In these figures, 1 is the object to be read and scanned (
A sub-scanning speed detection wheel that contacts and rotates on the reading surface of the object to be scanned (7), 2 is the rotating shaft of the detection wheel 1, 3 is an encoder disk for sub-scanning speed detection fixed to the rotating shaft 2, 4 is an encoder disk 3 is a light emitter for reading the scale, 6 is a photoelectric converter, 06 is a lamp for illuminating the object to be scanned 7, and 8 is for condensing the reflected light from the object to be scanned 7. Lens 9 is a photoelectric conversion element. Reference numeral 10 is a cover that supports each of these devices and allows the operator to hold them in their hands and move them in the sub-scanning direction.As shown in FIG. Letting h be the height of the d1 cover 10, h is set to be sufficiently larger than d. By making the cover 10 elongated in this manner, the operability is improved when the operator grasps the side surface of the cover 10 with his/her hand and moves in the direction of the arrow to perform reading scanning. Furthermore, as shown in FIG. 2, if the optical axis can do. This means that the area that shields the object to be scanned from the field of vision becomes smaller, which is extremely convenient for visually observing and recognizing the film number position during reading scanning.

In addition, the photoelectric conversion element 9 and the scanning target document 7a on the scanning object 7
The reading/scanning relationship between the two is shown in FIG.

1, A indicates the sub-scanning direction and B indicates the main scanning direction. The photoelectric conversion element 9 housed in the cover 1° is moved in the sub-scanning direction at a feeding speed manually by the operator.

Here, the sub-scanning speed is determined very artificially. In other words, the speed varies depending on the person handling the device, and even one person does not always move the hand scanning device at a constant speed from the sub-scanning start point to the end point.

For this purpose, the encoder disk 3, on which the sub-scanning speed detection encoder disk 3 is provided, has a transparent disk body as shown in FIG. is attached as a scale 3a. Therefore, as the detection wheel 1 rotates manually, the encoder disk 3 also rotates at the same speed, so that the input light to the photoelectric converter 5 is generated by intermittent light emitted from the light emitter 4 by the scale 3a of the disk 3. The converter 5 obtains repetition of pulses at a speed corresponding to the sub-scanning speed. For example, set the scanning line density to 8
17 mm, and the outer circumference of the detection wheel 1 is 100 mm/cm, then 8 start pulses are required during sub-scanning movement, so 80 start pulses are required during one rotation of the detection wheel 1.
Requires 0 pulses. Therefore, in order to create an 80o pulse with one revolution of the encoder disk 3mo, a scale 3a for every □ is required, which is difficult to manufacture with a disk having a small outer diameter. Therefore, the scale 3a of the encoder disk 3 may be set to a fraction of the normal scanning line density, for example, one that can easily produce 400 or 200 pulses.

An embodiment of a block diagram of a node scanning device using such an encoder disk 3 will be explained with reference to FIG. The electric circuit section shown in FIG. 5 is also housed within the cover 10 shown in FIGS. 1 and 2. It is fixed on the shaft 2 of the detection wheel of the hand scanning device that is manually moved in the sub-scanning direction, and as mentioned above, it rotates 20 times per rotation.
The encoder disk 3, which is manufactured to obtain 0 nolus, detects the sub-scanning speed by manual operation using the light emitter 4 and the photoelectric converter 5.The output pulse of the 0 photoelectric converter 5 is multiplied. The signal is multiplied by the number of pulses of a required scanning line density, for example, 800 pulses, and is supplied to the start pulse generating circuit 12. The start pulse SP generated by the start pulse generation circuit 12 is amplified by the driver circuit 13 and then applied to the photoelectric conversion element 9, and the start pulse SP is also supplied to the four-phase lock generation circuit 15. . The 4-phase lock generation circuit 15 is supplied with a master clock from the master clock generator 14 and synchronized with the start pulse SP to create 4-phase clock pulses, which are appropriately amplified by the driver circuit 16 and then output to the photoelectric conversion element. 9 is applied. Therefore, the read information of the photoelectric conversion element 9 is read out at the speed of clock pulses at start pulse intervals corresponding to an arbitrary sub-scanning speed, is amplified by the video amplifier 1, and a video signal is output from the video signal output terminal 18. Ru.

In this way, the start pulse SP of the photoelectric conversion element 9 is created according to the sub-scanning distance, so no matter how the sub-scanning speed changes, for example, even if the sub-scanning speed is moved by 100 mm7t, -7 in 1 second, Alternatively, even if the scanning line density is moved in □ seconds, a scanning line density of SOO can be obtained, and a constant scanning line density can always be obtained without being affected by changes in the sub-scanning speed.

In this embodiment, a pair of detection wheels 1 that rotate in contact with each other on the object T to be scanned has been described, but if another pair of wheels is provided at a position parallel to this pair of detection wheels 1, the contact with the object 7 to be scanned can be improved. This is convenient because parallelism with the photoelectric conversion element 1 is always maintained.

Still encoder disk 32 light emitter 4. Photoelectric converter 5
The speed-distance converting means constituted by the above is not necessarily limited to this example, and various known examples may be considered.

Furthermore, the video signal output terminal 18 is connected to other processing devices using an appropriate code, such as an image signal correction circuit, an amplifier compression circuit, a modem, etc. necessary for sending out facsimile signals. It is connected to the main body (processing device) side containing various devices, and the video signal read by this hand scanning device is sent to the main body (processing device) side.

The present invention has a vertically elongated casing and a small bottom area of the casing, and includes a sub-scanning pulse generating means that generates a pulse in accordance with the sub-scanning speed inside the casing, and a photoelectric conversion means that starts reading scanning with this pulse. Since it is a hand scanning device equipped with
The area that shields the object to be scanned during reading scanning is small, making it easier to recognize the reading scanning position and improving operability.

Therefore, if you hold the hand scanning device in your hand and move the sub-scanning speed detection wheel 11' in contact with the surface of the object to be scanned at an appropriate speed, you can easily obtain a normal read video signal. Can be done. As mentioned above, hand-held scanning can be easily performed, so stickers, slips, etc. on packages can be easily scanned.
This makes it possible to easily read image information even from objects that cannot be read and scanned using ordinary facsimile machines, scanners, and the like.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing an embodiment of the hand scanning device of the present invention, FIG. 2 is a side sectional view thereof, and FIG. 3 is a top view showing the reading and scanning relationship between the photoelectric conversion element and the document to be scanned. FIG. 4 is a front view of the encoder disk, and FIG. 5 is a block diagram of the main parts of the hand scanning device of this embodiment. 1... Sub-scanning speed detection wheel, 3... Encoder disk, 4... Light emitter, 5...
・Photoelectric converter, 6...Lamp, 7...
Object to be scanned, 9...Photoelectric conversion element, 10...
...Cover, 11... Multiplier, 12...
- Start pulse generation circuit, 14...Master clock generator, 16...4-phase lock generation circuit, D...Cover side. Name of agent: Patent attorney Toshio Nakao and 1 other person 2
Illustration destruction 1 0 times

Claims (1)

[Claims] a casing having a reading scanning window on the bottom surface and having a height greater than the length of the bottom surface in the sub-scanning direction; and sub-scanning pulse generating means for generating a pulse according to a manual sub-scanning speed;
A hand scanning device that includes a light source that illuminates an object to be scanned, and a photoelectric conversion element that photoelectrically converts light reflected from the object to be scanned.