JPS63121356A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To start reading from a prescribed position without errors by abutting on a travelling original, detecting a shift quantity and starting reading as soon as the shift quantity reaches a prescribed value. CONSTITUTION:A titled equipment is constituted in such a way that a shift quantity detection means 18 is provided in proximity to a feedout roller 3 and an original 1 which has been separated in the roller 3 and has been fed out enters between a detection roller 19 and a pinch roller 20 to rotate the roller 19. With the shift of the original 1 by the roller 3, a rotary encoder 21 generates a pulse signal which is proportional to the shift quantity through the roller 19. The number of the generated pulses from the encoder is counted, and if the number of the pulses reaches a prescribed number, the reading of the original 1 starts. Consequently, the original 1 passes through a clearance between guide boards 11' and 12' and reaches a reading position. A read means 17 reads the contents from the position where a tip part overreaches for prescribed quantity. Thus, reading can be started from the prescribed position without errors.

Description

[Detailed Description of the Invention] [Summary] A transfer amount detection means that detects the transfer amount by contacting the fed document is provided, and reading is started when the detected transfer amount reaches a predetermined value. Get the start timing right.

[Industrial application field]

The present invention relates to a facsimile machine, and more particularly to a method for optimizing the timing of reading a document.

Recently, office automation (OA: 0ffi)
With the spread of fax machines, the use of facsimile machines has become popular.

In these facsimile machines, it is extremely important to read the original from a predetermined position in order to maintain high quality of recorded images.

[Conventional technology]

As shown in the side view of the facsimile machine in Figure 2,
is fed out from the hopper 2 and inserted as shown by arrow A between a feeding roller 3 made of a friction member such as rubber, and a tongue-shaped separate rubber 4 that comes into pressure contact with the feeding roller 3.

At the same time as this insertion, the leading end of the original 1 presses down the leading end 5a of the sensor lever 5 that protrudes into the path of the original 1.

The pressed sensor lever 5 moves in the direction of arrow B with the shaft 6 as a fulcrum.
The insertion of the original 1 is detected by rotating in the direction and blocking the optical path of the original sensor 7, which is composed of, for example, a light emitting element and a light receiving element.

Based on this detection information, a control unit (not shown) rotates a stepping motor (not shown).

The rotation of this stepping motor is controlled by a conveying means 1 consisting of a feed roller 3, a feed roller 8, a pinch roller 9, etc.
Drive 0.

That is, the feeding roller 3 is rotated in the direction of arrow C, and the bottom sheet of the documents 1 stacked on the hopper 2 is separated and fed out by the frictional force.

Then, the original l passes through the gap between the guide plates 11 and 12 and reaches the part where the feed roller 8 and the pinch roller 9 are in pressure contact, and is ejected from the ejection port 13 by rotation of the feed roller 8 in the direction of arrow C. It has become.

On the other hand, reading the original 1 is performed using a fluorescent tube 14, a lens 15,
A reading means 17 comprising a reading element 16 is used to perform the reading at a location where the original 1 is removed from the guide plate 12.

The image of the original illuminated by the fluorescent tube 14 is formed on the reading element 1 via the lens 1s.

The reading of a document by such a facsimile machine is timed such that the number of pulses of the stepping motor is counted from the time when the document sensor 7 detects the leading edge of the document, and the reading starts when the count reaches a predetermined number.

That is, reading is set to start from a position where the leading edge of the document is a predetermined distance beyond the reading position, so as not to read the shadow created by the warping of the leading edge of the document.

[Problem that the invention seeks to solve]

The document is read as described above, but after detection by the document sensor, slipping occurs between the document and the feed roller at the part where the feed roller and the separate rubber come into pressure contact, and before the document reaches the reading position. When scanning starts, the shadow at the leading edge of the document may be read, resulting in unnecessary linear recording at the leading edge of the image on the recording side.

This is considered to be a stain in image evaluation, and in the case of devices destined for overseas markets, there is a problem in that the reading start position is determined by standards, resulting in out-of-spec specifications.

[Means for solving problems]

FIG. 1(a) is a side view of the facsimile apparatus of the present invention.

In the present invention, a transfer amount detection means 18 is provided which detects the transfer amount by contacting the document 1 to be fed, and the reading means 17 starts reading as soon as the transfer amount reaches a predetermined value. be.

[Effect]

Since the transport amount detection means directly detects the transport amount of the document and determines the reading timing, it is possible to start reading from a predetermined position without error.

〔Example〕

FIG. 1 shows an embodiment of the present invention.

Identical parts are designated by the same reference numerals throughout the figures.

In the present invention, as shown in the side view of the facsimile machine in FIG. 1(a) and the sectional view taken along the line DE in FIG. A transfer ffi+feeding means 18 for detecting the transfer amount is provided, and reading is started by the reading means 17 as soon as the transfer amount reaches a predetermined value.

That is, the transfer amount detection means 18 includes, for example, a detection roller 19, a pinch roller 20 in pressure contact with the detection roller 19, and a rotary encoder 21 attached to one end of the detection roller 19, as shown in FIG. Become.

This transfer! The detection device 8 is provided close to the feed roller 3 as shown in FIG. It is configured to enter and rotate the detection roller 19.

Therefore, as the document l is transferred by the feed roller 3, the rotary encoder 21 generates a pulse signal proportional to the amount of transfer via the detection roller 19.

With such a configuration, the facsimile apparatus of the present invention does not require the document sensor 7 as in the prior art, and rotates the motor (not shown) by pressing a start button (not shown) or the like. The feeding roller is rotated in the direction of arrow C to separate the stacked documents 1 from the hopper 2 and feed them out, and furthermore, the transfer amount detection means 18 is driven.

Therefore, the reading of the original 1 is started by counting the number of pulses generated by the rotary encoder 21 of the transfer amount detecting means 18, and when the number of pulses reaches a predetermined number.

The number of pulses is set at a position where the leading edge of the document 1 is a predetermined amount beyond the reading position, as in the prior art.

Therefore, the document 1 that has driven the transfer amount detection means 18 passes through the gap between the guide plates 11' and 12' and reaches the reading position.
Here, the content is read by the reading means F according to the prior art from the position where the tip has gone too far by a predetermined amount.

The read document 1 is transferred to the feed roller 8 as in the prior art.
The feed roller 8 reaches the portion where it is in pressure contact with the pinch roller 9, and is discharged from the discharge port 13 by rotation of the feed roller 8 in the direction of arrow C.

With such a configuration and reading means, there is no need to read the shadow at the leading edge of the document.

〔Effect of the invention〕

As explained above, since the facsimile device of the present invention directly detects the amount of document transport and starts reading, even if a slip occurs, reading starts from a predetermined position, and the shadow at the leading edge of the document can be read. This has great industrial effects, such as ensuring high quality recorded images without the occurrence of such problems.

[Brief explanation of the drawing]

FIG. 1(a) is a side view of the facsimile apparatus of the present invention, FIG. 1 is a document, 2 is a hopper, 3 is a feeding roller, 4 is a separate rubber, 7 is a document sensor,
8 is a feed roller, 9.20 is a pinch roller, 11.11'', 12.12' are guide plates, 13 is an outlet, 14 is a fluorescent tube, 15 is a lens,
16 is a reading element, 17 is a reading means, 18 is a transfer amount detecting means, 19 is a detection roller, and 21 is a low reencoder. j is R gem 2 (Puki-7
]＼Go-3 (1 time 70 rollers 4 (Guse/Rootco'2.7 is the document sensor 31 ma7 existence Toshi-ra 1
5 shins / 6 + craft 8 tower element ticket 1
Eye (a)

Claims (1)

[Claims] A facsimile device configured to read a document (1) to be sent at a predetermined position using a reading means (17), the facsimile device detecting the amount of conveyance by contacting the document (1) to be sent. A transfer amount detecting means (18) is provided, and when the transfer amount reaches a predetermined value, the reading means (17) is provided.
) A facsimile device characterized in that reading starts at