JPS63143144A - Controller for document tip registration mechanism - Google Patents

Abstract

PURPOSE:To eliminate useless regist time, by opening a registration gate with a time delay preset according to the detection results of the width of an inserted document through a sensor and carrying out positioning optimal for the sheet size. CONSTITUTION:The width of a document is detected by means of a plurality of sensors 2 arranged laterally at a document insertion port 1. A control section 6 obtains the length of the document based on the detected width of the document, and upon elapse of time preset according to said length, a solenoid 5 is energized to open a registration gate 3 so as to lift an idler roll 4. The document is fed by means of a drive roller 7 and the idler roll 4. Consequently, positioning optimal for the detected paper size is made to enable good copy, while the registration time is optimized to eliminate useless regist so as to enable efficient work.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a document leading edge registration that reliably and efficiently aligns the leading edge by changing the leading edge registration run time according to the width of the document. It relates to a control device for a mechanism.

[Conventional technology]

The conventional control device for the document edge registration mechanism is
The document detection section detects the document manually inserted from the document insertion slot, and then the document is detected for a certain period of time (for example, 0.
5 sec) After the leading edge is aligned by the registration gate, the document is transported to the document scanning section.

[Problem that the invention seeks to solve]

However, according to the control device of the conventional document leading edge registration mechanism, the leading edge registration is always performed at a fixed time after document detection regardless of the width of the document.
For example, a leading edge registration of about 0.5 seconds is appropriate for small-sized documents (A, ~ A2), but large-sized documents (AO ~ A1) may be transported before the leading edge registration is determined. There is a risk that it will happen. Furthermore, if the time is set to about 1 to 2 seconds for large-sized originals, there is a problem that time will be wasted for small-sized originals.

[Means for solving problems]

The present invention has been made in view of the above, and in order to ensure reliable leading edge positioning for each document size and to obtain an appropriate leading edge registration time without waste, a sensor is provided to detect the width of the document, and the sensor detects the width of the document. The present invention provides a control device for a document leading edge registration mechanism that changes the document leading edge registration time in accordance with the width of the document, and performs leading edge registration in an appropriate time.

Hereinafter, the control device for the document leading edge registration mechanism of the present invention will be described in detail.

〔Example〕

FIG. 1 shows an embodiment of the present invention, which includes a document insertion slot 1 into which a document is manually inserted, a document detection unit 2 equipped with a plurality of sensors that detect the width of the document, and the leading edge of the inserted document. A front end registration gate 3 for alignment, a solenoid 5 for moving the front end registration gate 3 and an idler roll 4 up and down, and control for controlling the solenoid 5 according to the width of the document detected by the document detection section 2. 6, and a drive roll 7 that is conveyed by two rolls: an idler roll 4 on which the tip registration has been completed.

FIG. 2 shows a plurality of sensors 80 to S4 of the document detection section 2.
It is a figure showing the arrangement of (five pieces in this example).

The sensors 30 to S4 are arranged as shown in the figure at positions for detecting the width of A0 to A4 size documents, respectively.

Here, 1 is a document insertion section, and 3 is a registration gate.

In the above configuration, a document is manually inserted through the document insertion slot 1 and the leading end is inserted up to the leading end registration gate 3. At this time, the width of the document is detected by five sensors 80 to S4 of the document detection section 2, and the detected information is sent to the control section 6. Each of the sensors 80 to S4 sends information on whether the document has passed through the center position to the control unit 6, and as shown in the flowchart of FIG. Then, the solenoid 5 is driven based on the leading edge registration time set according to the width of the document. In this example, Ao
, At When the width of the document is sized, the setting time t1=1
~2 seconds (for example, 1.5 seconds), when the document width is A2 to A4 size, the setting time tz=o, s~1.0 (for example,
Set the tip registration time to 0.8 seconds).

For example, in the case of A size document 8 (see FIG. 2), the sensors S3 and 84 detect the passage of the document. Control unit 6
, the checks are performed in order from sensor S0, and the third
The tip registration time is 0 as shown in the flow of the figure.
．． 8 seconds is decided.

After the document is inserted, when an appropriate leading edge registration time determined by the document width has elapsed, the solenoid 5 is activated to lower the leading edge registration gate 3 and at the same time push up the connected idler roll 4. At this time, the document is sandwiched between the idler roll 4 and the drive roll 7. 0.2 to 0.5 seconds after the gate 3 is lowered, the drive roll 7 rotates and conveys the document to the document scanning section.

In this embodiment, the sensors S0 to S4 are arranged in correspondence with the widths of A0 to A4 size documents, but a plurality of sensors may be arranged based on other criteria. In addition, in this example, the tip registration time is changed to 1 for large size and small size.
, and t2; however, a leading edge registration time suitable for each document width may be further set.

Further, the document insertion may not be performed manually, but may be automated using a slip roller or the like.

〔Effect of the invention〕

As described above, according to the control device for the document leading edge registration mechanism of the present invention, the document detection section is provided with a plurality of sensors that detect the width of the document, and the document detecting section is provided with a plurality of sensors that detect the document width, and the document is selected based on the document width detected by the sensor. Since the leading edge registration time is set, reliable leading edge positioning is possible for various document widths, and wasteful leading edge registration time can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing sensors S0 to S4 of a document detection section, and FIG. 3 is a flowchart diagram showing setting of leading edge registration time. Explanation of symbols 1 -------・-----1 Document insertion slot 2 ・-・-
・・・−・・・−・Document detection section 3−・−・−−1−−−
−−Tip registration region gate 4−・−・−・−Idler roll 5 ・・・・・−・−−−−−−Solenoid 6 ・−・
・−・−−−−m−Control unit 7−−−−−−One drive roll 8−・−・
--・--1---- Original (A! size) S0~S4---
---------・Sensor patent applicant Fuji Xerox Co., Ltd. Representative Patent attorney Hei 1) Tadao Figure 2 A.

Claims (1)

[Scope of Claims] A document that detects the width of the document when the document is inserted in a document leading edge registration mechanism of a copying machine that transports the document to a document scanning unit after performing leading edge registration of the document inserted from the document insertion slot. A control device for a document leading edge registration mechanism, comprising: a detection section; and a control section that opens a registration gate after a preset time according to the width of the document detected by the document detection section.