JPS5938760A - Copying device - Google Patents

Abstract

PURPOSE:To prevent the inadvertent changing over of double side copying mode to one side copying mode, by the operator during copying on double sides by emitting an alarm ''Paper remains''. CONSTITUTION:When a key switch for double side copying is held pushed, a double side copying flag is erected. When a copying button is pushed, paper is fed from cassette 37, 38 and is copied. When the double side copying flag is held erected, the paper copied on one side is contained in an intermediate tray 36 and a remain flat is erected. If the double side copying mode is released and one side copying is going to be stored while the paper ramins in the tray 36 ever the final page of an odd number of sheet originals is copied or in a like case, the remain flag is detected and the remaining of the paper is announed by voice to give an allowance for the operator in resetting the double side copying mode. When said mode is not reset within a specified time, the remaining paper is forcibly discharged.

Description

[Detailed description of the invention] The present invention relates to a copying apparatus equipped with a double-sided copying mechanism.

This type of copying machine is generally equipped with one double-sided copy instruction key and a buffer tray, and when double-sided copying is instructed by an electronic control device such as a microcomputer, the recording of cassette 1 is performed depending on the off position of the copy instruction switch. The paper is sent to a recording position such as a photoreceptor, and a first image f is printed on the surface of the recording paper.
Record φ and send it to the buffer tray (intermediate 1-ray),
When this is done for the set number of copies, in response to the next closing of the copy instruction switch, the recording paper in the buffer tray is sent to the recording position on the photoreceptor, etc., a second image is recorded on the back side, and the recording paper is transferred to the paper ejection slot (ejection port). Paper 1-lay) and repeat this for the set number of sheets.

When single-sided copying is instructed, the recording paper in cassette 1- is sent to the recording position such as the photoreceptor, the first image is recorded on the surface of the recording paper, and the paper is sent to the ejection port (paper ejection 1-ray). The image No. 2 is also recorded on paper fed out from the cassette 1-.

In this type of copying machine, when the last original has an image only on the front side, when copying that image, the operator does not change to single-sided copying, but copies in duplex mode 1-, and the original is also copied. When I finish the process, I sometimes forget to eject paper from the buffer tray. Therefore, conventionally, when the copy setting is changed from double-sided copy mode to single-sided copy mode, the buffer 1-ray recording paper is ejected.

However, if duplex copying is canceled by mistake at the same time (one-sided copy instruction key is turned on or duplex cancellation key is turned on, or the two-sided copy instruction key is set to 2-seat-1-loaf and the duplex copy instruction key is operated again), The recording paper in the buffer tray is ejected, and you have to set duplex mode again and try copying again.

SUMMARY OF THE INVENTION An object of the present invention is to provide a copying apparatus that does not immediately eject paper from the buffer 1-ray when double-sided copying is canceled due to an erroneous key touch or the like.

In order to achieve this object, the present invention includes copy operation instruction means including a double-sided copy instruction means and a copy instruction means;
Notification means: A paper feeding mechanism that sends the recording paper on which image recording has been completed to the buffer L-ray; A paper feeding mechanism that sends the recording paper of the buffer L-ray to the image recording position; and a paper ejection mechanism that sends the recording paper to the ejection port. In a copying machine equipped with ;, when Copy Star 1- is designated with a one-sided copy instruction, it refers to the remaining paper in the buffer tray and performs the lli paper of Buffer 1-lay while there is paper in Ban Fat Tray. It is equipped with an electronic control device such as a microcomputer that energizes the notification means. The notification means in this case is a display or voice notification that says ``There is only one paper left in the paper tray.''

According to this, even if double-sided copying is canceled by mistake, if double-sided copying is set before turning on the copy switch, the paper in the buffer 1-lay will not be ejected wastefully. Additionally, if the previous user leaves the area with paper left in the buffer tray and the next user sets 1-sided copy and presses the copy switch key, the paper in the buffer tray will be ejected and the remaining paper will be removed. Emissions will be notified.

FIG. 1 shows the structure of a mechanical section of an embodiment of the present invention.

In Fig. 1, B is the document conveying device, and each time a document is manually set, the contact glass 2 and Ir.
3! A mode in which one or more originals are automatically sent onto the glass by setting one or more originals, and a mode in which the original transport device is used as a pressure plate.

A is the main body of the copying machine, where images are created.

In the copying machine, the drum 20 is a photoreceptor using a selenium photoconductor, is rotatably supported on a shaft 50, and is rotated in the direction of the arrow in response to a copy command or the like.

A heater is installed inside the drum 11 to control the charging weight.

Before the drum 20 rotates, the static eliminating lamp 33. Pre-transfer lamp, separation charger, transfer charger 30. Erase lamp 29. and drives the cleaning device 32.

In this example, the cleaning device 32 is operating under the power-on condition. However, it may be configured to operate at the above timing. This allows the ram 2 to pass through the static elimination lamp.
The leading edge of the image to be rotated is the part after the position passing the cleaning device 32 by the control unit. When the drum 20 rotates to a normal position, the documents placed on the contacts 1 to glass 15 are optically scanned by the first mirror 16 and the halogen lamp 21, which are identical to the first cartridge 6.

The reflected light image is the first mirror 16. 2nd mirror 17° 3rd
Mirror 18. Lens 14. The image is formed on the drum 20 via the fourth mirror 19. After the main charger 28 charges the tiger 1120, the erase lamp 29 shines light on unnecessary parts to create an image frame suitable for the transfer paper or the projected image. Thereafter, a latent image is created on 1 to 2 by the reflected light image.

At this time, in order to obtain an image of the same size, it is preferable that the speed of the drum 20 and the speed of the first carriage 6 be the same. The latent image on the driver 11 is visualized as a 1-ner image by the developing section 26. At this time, by applying a potential (eg, +) to the developing section, a dark or light image 4 can be obtained.

The recording paper in the first paper feed tray 37 or the second paper feed tray 38 is fed by the paper feed roller until the paper detection is activated.

Next, the paper feed roller is driven again, and the transfer paper is sent to the registration roller 43, which has been stopped in advance, and the paper is transferred to the drum 20-.
The registration roller 43 is driven at the timing when the leading edge of the color image and the leading edge of the transfer paper match. The 1 to 3 images on the driver 1120 are transferred to transfer paper by the transfer charger 3o. At this time, since the surface of the drum is very smooth, the adhesion between the drum 2o and the transfer paper is large, so the separation charger lowers the potential of the transfer paper, reduces the adhesion, and separates the paper. The toner is conveyed to the fixing section 34 by the conveyor belt 52, where heat and pressure are applied to the toner to make it adhere to the toner, and the toner is discharged onto the paper discharge 1-lay.

Since a small amount of i-ner remains on the surface of the drum 20 after transfer, the pre-cleaning charger (-discharge) is activated, the drum surface is cleaned with the brush blade, and the surface potential is reduced with the next static elimination lamp. (The method for eliminating static electricity is a lamp. 1. EI), El.

(C is also good depending on the AC power supply). Then proceed to the next cycle. These controls are mainly based on pulses generated in synchronization with the rotation of the drum or fortune-telling (+8 pulses for 10) to drive the drum.

When one-sided copying is set, the recording paper sent to the fixing device 34 passes through the fixing device 34 and is sent out to the paper ejection l-ray 58 through the ejection 1''.

When double-sided copying is set, the fixing device 3 is
After passing through the fixing device 34, the recording paper sent to the buffer 1-lay: 36 is sent to the one-way reversing transport path 59 by the transport direction control roller 35, and then sent to the transport path to the buffer 1-lay: 36. Sent to 36.

In the copying operation in response to the even-numbered copy star 1-, the recording paper in the buffer tray "2" is sent to the transfer section,
After the transfer is completed and the recording paper is sent to the fixing device 34, the recording paper is transferred to the fixing device 3.
After passing through step 4, the paper is sent out to the paper ejection tray 58 through "ejection" in the same way as in the case of one-sided copying.

FIG. 2 shows the configuration of an electrical control system that controls the operation of each part of the mechanism. The main body of the electrical control system is a microcomputer unit 61, to which input signals 1-62. Abnormality display units 1 to 63. Various sensors 11'j G 4 and various electric circuits for energizing the electric elements of the copying mechanism elements are connected. microcomputer uni y h 6
1 is microprocessor C1-IJ, human output port T
10Ki R-OM, Crowd Capo-1-1/Oi J'R
AM and Goo 1-Element, Amplifier.

It consists of interface elements such as inverters.

When the power switch of the copying machine is turned on, the indicator light showing the following indication lights up.

A, power supply switch ON IN, please wait 9 years, C, number of copies... 1 =, number of copies... wait time until copying is possible E, '/a degrees......to standard 9 Paper size: Site set for paper source, Paper source: Paper source setting instructions (7 or below) H1: Magnification: 1/+ (100%) ) The main key switches provided with the operation board 1-62 are as follows.

1. Power saving key: Press this switch to enter power saving mode. Press 11i times to return to normal. In power saving mode, the following states occur.

a0 power saving lamp flashing The following information will be deleted.

Disabled except for the C1 power saving key.D, the drive 11 and fixing heater are controlled to a lower temperature than during copying.C9 Copy settings are standard (1 size, "Nicasse I-Paper feeding.

When the power saving mode is canceled when the density is 9 single-sided recording and the number of sheets set is 1), the copy setting becomes standard. The power saving key is disabled during copying (until the recording paper is ejected or until it has entered the buffer tray).

2. Pudding 1 ~ Key switch: The copy operation is started by pressing this key.

Can be entered only when copy operation is enabled.

3. Interrupt key switch: If you press this key during copying, copying will stop at that cycle if it is before paper feeding, or after the copying is finished (after ejecting the recording paper). (or after entering the buffer tray), the mode and display at that time are memorized, the mode is set to the standard state, the number of copies per copy is set to 1, and the number of copies per copy is set to 0 (light off). When entering interrupt mode, the interrupt display lights up. Pressing the key is valid multiple times even during standby and copying, and the mode at the time when copying is completed is adopted.

4. 10 key (numeric keypad) switch: The 10 key is used to set the desired number of copies, and it is possible to set a 2-digit number using this key. IO
During copying, when the number of copies is not 1, the first 0 key and the third digit key press are disabled. Further, the entered key is displayed on the screen 1 and the contents of the key are stored in the memory.

5. Double-sided copy key: When this key is pressed for the first time, double-sided copy mode 1~ is entered, and double-sided copy is displayed. Press it again to return to the 11-page copy mode.

The ROM of the microcomputer unit 1-61 contains a programmer 11 that performs copy status setting, display, single-sided mode copying, duplex mode copying, and other scheduled controls.
is stored. 3 to 5 show the control operation of the microcomputer unit 61 based on the program.

Please refer to FIGS. 3-5. When powered on, the microcomputer unit 61 initializes its input/output board, sets a three-minute timer, and powers on the fixing heater. Next, the state of each part is read, and control settings are made so that the state of each part is in a predetermined state, and if there is no abnormality, the copying conditions are set to standard. The following conditions are set by ``2''.

Number of sheets per sheet...1 Copy density...Medium magnification...1/1 Single-sided copy paper feed tray...Upper cassette (lower cassette if there is no paper in this) Next, the microcomputer unit 1-61 enters the operation reading of the keys on the operation board, and when a key is operated, the copying conditions specified by the key operation are updated and set. This key-in reading is performed until the pudding 1 key switch is opened. In addition, after initialization, the 3-minute timer is set to 1~, and if the 3-minute timer times out before the lin 11 key inch is closed (copy is instructed),
Enter Auto Reset 1- and return the copying conditions to standard. This time 1- and auto-reset are performed after the subsequent a-photograph is started. In other words, a 3-minute timer is set each time the set number of copies is completed, and if the print key switch is not operated before the timer reaches 11,
Proceed to O1-Resefh.

When double-sided copying is instructed by reading the key-r, the microcomputer unit 1-61 sets a double-sided copy flag in the register.

When there is a copy instruction (printer 1 - key switch on), the microcomputer unit 1 - 61 sets a residual flag that is set during front side copying of double-sided copying (copy mode that stores the transferred recording paper in the buffer 1 - lay). , and if it is stored in the register, the process proceeds to paper ejection as shown in FIG. If there is no remaining flag, the double-sided copy flag is referred to, and if it is, the process proceeds to 11-sided copying, and if there is, the process proceeds to double-sided copying.

Assume that there is no recording paper in buffer 1-ray (there is no residual flag), double-sided copying is set, and copying has started. In this first copy, the copy is stored on the buffer tray 36. When the first copy of the first page of the original is completed, the microcomputer unit 61 sets a residual flag in the register and sends an indication to the camera 1 that recording paper remains in the buffer. , increments the number of copies by 1, reads the status to see if the next copying operation is possible, and if abnormal, proceeds to reading and controlling the status of each part, but if normal, the number of copies is referred to as the set number. do. If the number of copies does not reach the set number, copying is performed in a mode in which the transferred recording paper is stored on the buffer tray 36 until the number of copies reaches the set number. When the number of copies becomes equal to the number of copies set, the number of copies is cleared in the third step of FIG. 4, and the process waits for the next copy instruction. Key-in reading is performed while waiting for a copy instruction, and when one-sided copying is instructed, the two-sided copy flag is cleared. When the next copy is instructed without key-in, copying is performed in a mode in which paper is fed from the buffer tray 36 and the copy is discharged onto the 1-ray 58. When this is done until the number of copies reaches the set number (the number of copies equals the number of sets), the number of copies is cleared and since there is no remaining paper on the buffer tray, the remaining flag is cleared.

The display indicating that recording paper remains in the buffer 1-r36 is reset. Incidentally, if there is a key-in, one-sided copy is set, and a copy instruction is issued, the process goes through the step "Is there a residual flag?" in FIG. 3 and then proceeds to the ejection process shown in FIG. 5. If there is a key-in and the number of sheets set is changed even though it is duplex copying, the number of recording sheets stored in the buffer 1-ray 36 and the number of sheets to be copied next will not match, resulting in a copy error. :
Figure 3: [Residual flag present?] After completing step J, proceed to the loss “output ring” shown in Figure 5.

Not shown in Figure 5 111: In the source ring, first [buffer 1 ~
Sera 1-shi announces that there is paper left in Ray.

All the recording sheets of buffer 1 to ray 36 are ejected.

In this, the buffer 1
- Feed the recording paper from the tray to the photosensitive drum and discharge it to the paper discharge tray 58.

When the output of the paper sensor becomes out of paper, the notification is stopped, and when the last paper comes out to the l-ray 58, the ejection operation is stopped.

The operation of the embodiment of the present invention described above is summarized as follows.

(+) Copies of odd-numbered originals for double-sided copying are stored in the buffer 1-ray 36, a residual flag is set, and the remaining paper on the buffer 1-ray is displayed.

(2) For double-sided copying, copies of even-numbered originals are made on recording paper supplied from buffer 1-ray 36, and 411
'When the sheet of paper is sent to the paper tray 58 and one sheet of paper has been copied, the remaining flag is cleared and the display indicating that there is remaining paper is reset.

(3) If the copy mode is changed to single-sided copy after making an odd-numbered copy in double-sided copying, when the print key switch is operated, a message saying "There is a copy in buffer tray 36 recording sheets are ejected to the tray 58.

(4) The copy mode does not change after making an odd-numbered copy in double-sided copying, but if the number of sheets set is changed, the [Buffer 1
The recording paper in the buffer tray 36 is ejected to the tray 58 with the notification that there is a copy on the tray.

In the above embodiment, the detection signal of the vapor sensor of the buffer 1-ray section is referred to at t9 in the paper ejecting process of ejecting the recording paper from the buffer tray 36 to the hanging tray 58, but the microcomputer unit 1-6
1 may memorize the number of copies from the previous time, and perform the ejection operation in the ejection process until the number of ejected sheets (#1' output operation number) reaches the number of copies from the previous time.

As shown in the second part, in the present invention, recording paper stored in buffers 1 to rays for one-sided copying is ejected to paper outputs 1 to rays with a specific notification at the same time as J1 side copying, which is performed in a different mote. Therefore, even if you accidentally press the single-sided copy setting key while duplex copying is in progress, the buffer 1-ray recording paper will not be ejected until you operate the print key switch. At the same time, the buffered recording paper is not ejected, and it is possible to return to double-sided copying before operating the print key switch, and continue double-sided copying without wasting paper or operations.

Also, when the person who used it first leaves the last, odd-numbered copy in the buffer 1~ray and another person makes the next copy, a predetermined notification will be issued if the same double-sided copy has a different number of copies. The recording paper of the buffer L-ray is ejected to the 1-lay, so that a later person will not have to make double-sided copies with errors.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an outline of the mechanism of an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of an electrical control system that controls each part of the mechanism shown in FIG. 2, and FIG. Figures 4 and 5 show the microcomputer unit 1 shown in Figure 2.
The process now advances to flowchart 1 showing the control operation of step 1. Δ: Copying machine body B: JM document conveyance device 6:
Carriage 14: Lens 15: Contact glass plate 16-19: Mirror 20: Photoreceptor drum t,
21: Halogen lamp 26: Developing device
28: Main Charsha 29: Erase lamp 30
: Notary charger 32: Cleaning device 33:
Static elimination lamp 34: Fixing device 36: Buffer tray 37. 38: Cassette 43 Ni register L - roller 50: Φ mountain 58: Paper discharge 1 - Ray 59
: Reversal 1 "1 Route Inside Ricoh Co., Ltd., 1-3-6 Nakamagome, Ota-ku, Tokyo 0 Inventor: Toshio Watanabe Inside Ricoh Co., Ltd., 1-1-6 Nakamagome, Ota-ku, Tokyo

Claims (1)

[Scope of Claims] Copy operation instruction means including double-sided copy instruction means and copy start instruction means; Notification means; Paper feeding mechanism for sending the recording paper on which image recording has been completed to the buffer tray; Paper feed to recording position 4
! When the paper ejector that sends the recording paper to the ejection port dies; and when Copy Star 1 is instructed to copy, it refers to the remaining paper in the buffer tray and sends the paper to buffer 1 when there is paper on the tray. A copying apparatus comprising: an electronic control unit that discharges a buffer 1-ray and energizes a notification means.