JPS60204551A - Copying machine - Google Patents

Abstract

PURPOSE:To reduce the space and cost by providing a copying machine capable of manual feed copying, which can make a copy by deciding whether it is manual feed copying or automatic feed copying without a switch for detecting the manually-fed paper. CONSTITUTION:When a copy command is given from a copy start switch disposed on a console panel, a transfer sheet fed from a cassette 5 turns on a paper detection switch 40 at the time of passing a paper fed roller 6. The paper detection switch 40 is disposed on a transport path for a transfer sheet, and adapted to detect a transfer sheet. The switch is provided regardless of the existence of a manual feed mechanism. When the paper detection switch 40 is turned on, a pair of transport rollers 7 are rotated to transport the transfer sheet to a timing roller 8 to be copied. A manual paper feed table 41 is disposed in the vicinity of the right side of the paper feed roller 6. In this arrangement, when a transfer sheet is placed on the manual feed table 41 and manually fed into the copying machine, the transfer sheet turns on the paper detection switch 40 to perform manual feed copying.

Description

[Detailed description of the invention] Technical field The present invention relates to a copying machine capable of manual copying.

Prior Art Conventionally, in order to enable paper feeding by manual feeding in addition to an automatic paper feeding mechanism, for example, a manual feeding table was used to open and close the manual feeding slot and to serve as an ID plate for manually feeding paper in the open state. A switch detects the opening and closing of this manual feed table, and if paper is inserted from the paper feed slot when it is open, the copying operation is started by detecting this with a paper detection switch. etc. are provided.

In any case, the conventional device requires an opening/closing or attachment/detachment mechanism for manual paper feeding, and accordingly requires a conveyance roller and a detection switch exclusively for manual paper feeding, which makes it difficult to operate the copying machine mechanism. This is one of the causes of complexity, increased cost, and increased size of copy paper.

OBJECTS OF THE INVENTION The present invention has been made with attention to the above points, and provides a copying machine that can perform copying by manual paper feeding without using a special detection switch or switching mechanism. The purpose is to

SUMMARY OF THE INVENTION In this type of copying machine, a paper detection switch is always provided at a portion where copy paper enters a copying path, regardless of whether or not a manual paper feed mechanism is provided.

According to this invention, when the copy start switch is operated, the machine operates in automatic paper feeding mode, while when the copy start switch is not operated and the paper detection switch is operated, it operates in manual paper feed mode.

Embodiment FIG. 1 shows the internal structure of a copying machine which is also equipped with a manual paper feeding mechanism according to the present invention.

To explain the outline according to the copying operation, a photoreceptor drum 1 installed approximately in the center of the main body can be rotated in a clockwise direction, and a charge of a predetermined value is first formed in an electrostatic charger 2, and then the photoreceptor drum 1 is scanned to the right. The optical system 3 scans and exposes the image of the document placed on the document glass on the top surface of the main body, and the electrostatic latent image formed here is converted into a toner image by the magnetic brush type developing device 4. On the other hand, copy paper (hereinafter referred to as transfer paper) is stored in a paper feed cassette 5, and is fed one by one from the top layer based on the counterclockwise rotation of the paper feed roller 6. 6, is transported to the left by a pair of transport rollers 7, and transferred to a transfer area A by a pair of timing rollers 8.
leading to.

Here, an electric field is applied to the transfer paper from below by a transfer charger 9, and the toner image is transferred to the transfer paper.

At this time, the transfer paper is brought into close contact with the photoreceptor drum 1 by the electric field, but is separated from the leading edge by the separation belt, and the transfer paper is moved to the conveyance guide plate 2.
The toner image is fed into the fixing device 10 while being guided on the toner rollers 11 and 12, the toner image is fixed by the heating action of the fixing rollers 11 and 12, and the toner image is discharged from the discharge roller pair 13 onto the tray 14.

On the other hand, the photosensitive drum 1 continues to rotate clockwise, residual toner is removed by a blade type cleaner device 15, residual charge is erased by an eraser lamp 16, and the photosensitive drum 1 is prepared for the next copying.

In the copying machine configured as described above, when a copy command is received from the copy start switch 5W3 (Fig. 2) provided on the operation panel, the transfer paper fed from the cassette 5 is transferred to the paper feed roller 6.
When the paper passes through, the paper detection switch 40 is turned on.

This paper detection switch 40 is located on the conveyance path of the transfer paper,
This detects the presence of transfer paper, and is provided regardless of the presence or absence of a manual paper feed mechanism.

When the paper detection switch 40 is turned on, the transport roller pair 7 is rotated to transport the transfer paper to the timing roller 8, and copying is performed by the above-described operation.

A manual paper feed table 41 is provided near the right side of the paper feed roller 6. When a transfer paper is placed on this manual paper feed table 41 and manually fed into the copying machine, the second transfer paper is detected. By turning on the switch 40, manual copying is performed as will be described in detail later.

FIG. 2 shows a block diagram of the control device, in which the CPU5
0 controls the copying operation by the above-mentioned automatic paper feeding, and also includes a control program for manual copying shown in FIGS. 3 and 4. @ In Figure 2, SWl is a contact point of the paper detection switch 40 in Figure 1, SW2 is a timing switch, SW3 is a copy start instruction switch, SLI is a solenoid that drives the automatic paper feed roller 6, and SL2 drives a pair of transport rollers 7. The solenoid SL3 is a timing roller driving solenoid.

FIG. 3 is a main flowchart in an embodiment of the present invention. When the power is turned on, the process advances to step S01, the number of copies is set to 1, the document scanning table is returned to its normal position, and the CP
Initial settings such as setting the count values of internal timers T-1, T-2 and T-3 of U50 to each timer (down counter) are performed, and the process proceeds to step SO2, where the time for one routine of the main flowchart is set. Set the internal timer to control. Step SO3 is a manual feeding processing routine, which controls the manual copying operation of the paper fed from the manual feeding tray 41. The details are as shown in Fig. 4 and will be described later.6 After that, the process proceeds to step S04, in which various DV constant data are cleared, keys such as the stop key are manually operated, countdown processing is performed to display the number of copies, and actual copying is performed. Control etc. Next, the process proceeds to step SO5, and if the internal timer has finished counting by the set value, the process proceeds to step 802, and if the count has not been completed, step SO5 is repeated.

Next, the manual copying operation in step SO3 will be explained with reference to FIG.

In the first step SO of step 803, it is determined whether or not the copy start switch SW3 is off, and when it is on, that is, when a copy command has been issued by the copy start switch on the copying machine, automatic paper feeding is performed. On the other hand, if the copy command is not issued from the copy start switch SW3, the process advances to the switch S1 and the manual paper feed tray 41
The paper detection switch 40 (
That is, whether or not to perform manual copying is selected by turning on/off SW1, ).

Paper detection switch 40. When (SWI) is off, the process proceeds to switch S2, and when it is on, the process proceeds to switch Sll.

When proceeding to step S2, the timer T-1 is counted, and in step S3 it is determined whether or not T-1 has counted over. When timer T-1 counts over,
Immediately, when a predetermined time has elapsed, 7 lag F-1 is set, and in step S5, when the detection switch 40 (SWI) is off, the process of setting the count time of timer T-2, which will be described later, is repeatedly executed. do.

Then, in step S34, the detection switch 40 (swi
) is determined to be off, the process of setting the flange-3 is executed. The 7-lag F-3 is reset in the initial setting, and the counting operation of the timer T-3 is executed only when the reset is performed, as shown in step S30, which will be described later.

Note that 7 lag F-1 indicates that the paper detection switch SWI has been off for more than the time set by timer T-1.
One of the criteria for accepting manual paper feeding is that F-1 is a set.

Further, the timer T-2 determines the time from when the paper detection switch SW1 is turned on until the control of the copying operation associated with manual feeding is executed. That is, if the paper detection switch SW1 is not on for the time set by the timer T-2 or more, the control for manual paper feeding is not executed.

When paper is fed from the manual paper feed tray 41 and the paper detection switch SW1 is turned on, the process advances to step S11.
It is determined whether or not the paper feed roller 6 is rotationally driven. If not, the process proceeds to step 812, where it is determined whether there is a wait (waiting) or a trouble, and the process proceeds to step S13, where 7 lag F-1 is determined.

If the 7-lag F-1 is set, it is determined that manual copying is possible, the process proceeds to step 814, the count of timer T-2 is started, and after the set time of T-2, copying is performed in step 81.6. If it is not being copied, step S
Proceed to 17, and 7 lag F-2 indicates that manual copying is in progress.
is set, the process proceeds to step 81.8, and processing for starting a copying operation is executed.

Then, in step S19, 7 lag F-'1 is reset, and in step S30, 7 lag F-3 is determined, and when it remains reset, the process proceeds to step S31, and timer T-3 is determined.
is counted, the process proceeds to step S32, and when the set time of timer T-3 ends, the process proceeds to jam processing (833).

In step 820, the count value of timer T-1 is set. This timer T-1 counts down when the switch 40 (SWI) is turned off, and when transfer sheets are manually fed one after another, one sheet of transfer paper enters the copying operation and then the next transfer starts. Determines the time it takes for paper to start copying. That is, in this embodiment, in step S3,
After detecting that the switch 4Q (SWi) has been continuously off for a period longer than the set time of the timer T-1, a 7-lag F-1 is set in step S4 to enable manual copying.

Note that if it is determined in step 816 that copying is in progress, the process advances to step S20, and control for starting the manual copying operation is not performed. If the on state of the paper detection switch SW1 continues until the time when copying is no longer in progress, manual copying is performed immediately.

Further, the timer T-3 is set to a time that allows the longest transfer paper that can be passed through the copying machine to sufficiently pass through the paper detection switch 40 (SW1).

This uses a mechanism that drives each conveyance roller to eject the transfer paper out of the copying machine if there is any transfer paper left inside the copying machine when the power is turned on (for example, if you forget to remove jammed paper). switch 4 within the time set by timer T-3.
0 (SWI) is not turned off, jam processing is executed.

If the detection switch 40 (SWI) is off when the power is turned on, the 7 lag F-3 is set and the timer T-3 does not count.

When the power is turned on, if there is no paper near the paper detection switch 40 (SWI) and there is paper after the transfer paper set by timer T-1, the process first proceeds to step S2 and continues until the time set by timer T-1 elapses. 85. Step S34° is repeated, and after the set time has elapsed, 7 lags F-1 are set in step S4.

After that, paper is inserted and the paper detection switch 40 (SWI
) is turned on, the process advances to step S11, and step S
Proceed to step 14 to start manual copying.

Incidentally, the timing of the main parts of the normal copying operation and the manual copying operation are shown in FIGS. 5 and 6.

Effects As described in detail above, the present invention can perform copying by determining whether it is manual copying or automatic paper feeding copying without providing a special switch for detecting manual paper feed. This eliminates the need for a mechanical mechanism, which saves space and eliminates the need for mounting and adjusting switches, making the copying machine cheaper.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a copying machine to which the present invention is applied, FIG. 2 is a block diagram of a main control circuit of the copying machine shown in FIG. 1, and FIG.
Figure 4 shows the control operation of the main parts of the copying machine shown in Figure 1.
The charts shown in FIGS. 5 and 6 are time charts showing the operations of the main parts. 40 (SWI)...Paper detection switch, 41...Manual paper feed tray, SW3...Copy start switch, 50...C
P.U. Patent applicant Minolta Camera Co., Ltd. Representative Patent Attorney Aoyama Hogai (2)

Claims (1)

[Claims] (1) a start operation means for starting the copying operation; an automatic paper feed means for automatically feeding paper from the storage section in accordance with the operation of the start operation means; a copy paper detection means provided to detect copy paper; a guide member provided to manually guide copy paper from outside the copying machine to the copy paper detection means section; and a copy paper detection means provided to detect copy paper. means for determining whether or not the copy paper was sent out in response to the operation of the start operation means; 1. A copying machine comprising: control means for controlling manual copying when it is determined that the copy has not been sent out.