JPS6270869A - Control method for copying machine - Google Patents

Abstract

PURPOSE:To reduce the complexity of operating procedure and to reduce the load of an operator by controlling the operation so that different recovery operation is executed in accordance with the succeeding processing at the interruption of copying operation due to various kinds of causes. CONSTITUTION:Copying paper is carried from paper feeding cassettes 111, 112, an toner image is transferred to the copy paper, fixed by a fixing roller 120 and then discharged to a discharge tray 122. In case of double-sided mode, the copy paper is turned upside-down and accumulated in an intermediate tray 133. At the interruption of copying operation, the cintinuity of the operation, its interruption or the start of new operation is selected by respective exclusive keys or the combination of keys to be used for normal copying operation. When new start is selected, an original is returned to a job tray 215, untransferred sheets accumulated in the tray 133 are discharged to the outside of the machine and copying operation is restarted. At the selection of interruption, the original is reset and the untransferred sheets are discharged to end the operation.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a method for controlling a copying machine equipped with a circulating automatic document feeder that circulates a copy document placed on a document table and sends it to an exposure section of the copy machine. .

(Prior Art) In this type of copying machine, conventionally, when a copying operation is interrupted due to operation of a copy stop key, operation of a transfer paper end sensor, paper jam, etc., a selection is made between keeping the interruption or starting a new one. Even in such cases, the operator was responsible for resetting the original into the job tray. However, in recent years, as the processing speed of copying machines has increased and their functions have improved, repair operations in the event of a failure have become more complex.

(Purpose) The present invention was made based on this background,
The purpose of this type of copying machine is to reduce the complexity of operating procedures due to faster copying operations and to lighten the burden on the operator.

(Configuration) For this purpose, the present invention is characterized in that when a copying operation is interrupted due to various causes, control is performed so that a different recovery operation is performed depending on subsequent processing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an example of a copying machine according to the present invention, in which a circulating automatic document feeder (hereinafter referred to as RD
(referred to as F) 200 is attached.

In the same figure, 101 is a contact glass on which a copy original is placed, and 102 is a photoreceptor 10 for copying an image on the original.
103 is a photoconductor for forming a copy WJ image, 104 is a charger that uniformly charges the surface of the photoconductor 103, and 105 is an optical system for exposing the surface of the photoconductor 1030, in which the image of the copy original is An erase lamp for removing the non-printable portion, 106 a developer for developing the electrostatic latent image formed on the surface of the photoreceptor 103 with toner, 111 and 112 a paper feed cassette for supplying copy paper, 113 and 114 115 is a conveyance unit that conveys the copy paper; 116 is a registration roller that feeds the copy paper to the photoconductor 113 at a predetermined timing; and 117 is the photoconductor 113. A transfer charger that transfers the toner image formed on the copy paper onto the copy paper, 118 a separation charger that separates the copy paper from the photoreceptor 113, and 119 a conveyance belt that transports the separated copy paper. 20 is a fixing roller that presses and heats the copy paper to fix it on the copy paper; 121 is a discharge roller that discharges the copy paper after fixing to a discharge tray 122;

Further, 131 is a switching claw for switching the conveyance path of the copy paper after fixing, 132 is a reversing unit for reversing the copy paper;
133 is an intermediate tray for storing inverted copy sheets;
Reference numeral 34 denotes a paper feed roller that feeds the copy sheets stored in the intermediate tray 133 to the registration rollers 116. In addition,
The bottom plate 133a of the intermediate tray 133 is urged to rotate about one end as a support shaft, as shown by the broken line, when sending out the copy paper.

141 is a paper discharge sensor for detecting the copy paper discharged to the discharge tray 122; 142 is a double-sided population sensor for detecting the copy paper carried into the intermediate tray 133;
43 is a double-sided exit sensor for detecting the copy paper conveyed from the intermediate tray 133.

In the RDF 200, 201 is a hammer tray on which a copy document is placed, 202 is a paper feed belt that feeds the copy document from the document tray 201, 203 is a deflection section, 204 is a diagonal conveyance section, 205 is a deflection conveyance section, 206 207 is a switching claw that switches the conveyance path of the copied original after copying; 209 is a deflection roller that sends out the copied original to the reversing unit 210 or the guide unit 211; 213 a; 21
3 b.

213C is a conveyance roller, 214 is a deflection unit, 215 is a job tray for stacking M copies of originals, 216 is a paper feed belt that feeds the copies from the job tray 215, 217 is a deflection unit, 218 is a horizontal conveyance unit, and 219 is a post-copying unit. This is a document ejection tray from which copy originals are ejected.

221 is a document sensor for detecting that a copy document is placed on the document tray 201; 222 is a document feed sensor for detecting that a copy document is sent out;
Reference numeral 23 denotes a carry-in sensor for detecting that the copy original has been carried onto the contact glass 101; 224 a position sensor for detecting that the copy original is positioned on the switching claw 207; and 225, a position sensor for detecting that the copy original is placed on the contact glass 101. A document population sensor 226 for detecting that the paper is ejected to the tray 215
227 is a document exit sensor for detecting that a copy document is fed out from the job tray 215;
A document feed sensor 229 detects the trailing edge of the copy document fed out from the job tray, and detects that the first copy document whose copying has been completed is stacked on the copy document on the job tray. This is a separation sensor for separating.

In such a copying machine 100 and RDF 200,
One-sided-duplex mode in which an image from one side of the original fiK is formed on one sheet of copy paper, one-sided-to-duplex mode in which images from one side of two copies are formed on both sides of one sheet of copy paper, and both sides of a copy original a duplex-single-sided mode in which images of the original are formed on two sheets of copy paper, and a duplex-duplex mode in which images of both sides of the original are formed on both sides of a single sheet of copy paper; Multiple operations are possible, combining an automatic document feed mode (ADF mode) in which copies are made for the set number of copies, and a recycling mode in which one copy is made from each of multiple originals and this is repeated for the set number of copies. .

Here, the state of the document in each mode is the document tray 20.
1. Contact glass 101. A typical example of what the job tray 215 looks like will be explained with reference to FIG.

1) Single-sided - Single-sided, ADF mode...Figure 2 (a) How to view the drawing: Originals on the original tray, job tray, and contact glass should be imaged in the direction of the arrow, that is, on the lower side in this drawing. It exists face to face. The same shall apply hereinafter.

2) Copying one side to one side, recycle mode 1st set・−・−・・−・−−−−−・−−−−
---...Figure 2 (a) During copying after the second set ---
−−−・−−−−−−−−−−・−Figure 2 (b) 3)
Single-sided - double-sided, ADF mode Copying the front page of the transfer paper-----Figure 2 (a)〃 Back #-------------
--- Figure 2 (b) 4) Single-sided - double-sided, recycling mode Copying the front page of the first set of transfer paper --- Figure 2 (a) From the above ----------- m------・-・・・・
-m----・・・・-・--・-Figure 2 (b) 5) Both sides - Both sides, ADF mode Copying the front page of transfer paper ----------m-・・-Figure 2 (a)〃 Back 〃-・−−−−−1−−−−−・
Figure 2 (b) 6) Both sides - both sides, recycling mode 1M Copying the front page of the first transfer paper - Figure 2 (d) 2
After the group 〃〃-・-Figure 2 (e) In this case, among the documents in the job tray, the front page of the completed document is facing upward, and the front page of the unfinished document is facing downward.

Copying the back page of transfer paper...---1------
Figure 2 (f) 7) Double-sided - Single-sided, ADF mode Copying the front page of the original - 1 - 1 - 1 -
--Figure 2 (a) I N #--・-・・--1-
-・----1--Figure 2 (C) 8) Double-sided - Single-sided, recycle mode Copying the front page of the original -・--・--Figure 2 (a)
〃 Back // −−−−−−−1・−−−−−−
----・FIG. 2(c) On the other hand, regarding the state of the transfer paper, in the single-sided-duplex and duplex-duplex modes, unfinished transfer paper may remain in the intermediate tray.

Furthermore, in order to improve copying speed, recent copying machines perform a specific copying operation on a given original, instead of keeping the original on the contact glass until the transfer paper is completely ejected outside the machine, and instead using the exposure operation. As soon as the copying process is completed, the copying operation is replaced with the next one and the next copying operation is executed continuously, so there is no relationship between the number of completed copies and the original on the contact glass.

Under the above conditions, when the copying operation is interrupted due to the copy stop key, transfer paper end sensor, paper jam, etc., the operator is requested to manually re-set the original or intermediate The work is too complicated to dispose of unfinished copy paper in the tray.

Therefore, in the present invention, the following control method is executed.

1) When the copying operation is interrupted, the operator is allowed to select whether to continue the operation, interrupt it, or start anew. A dedicated key may be provided for selection, or a combination of keys normally used for copying (for example, to continue, press IT I II on the numeric keypad and press the print key; to interrupt, press I on the numeric keypad)
(Press the print key while holding down I 2 If)
But that's fine.

2) If you select a new start, the screen shown in Figure 2 (
The originals in the states a) to (f) are returned to the job tray 215 as shown in FIG. 2(g), and the unfinished transfer paper in the intermediate tray 133 is ejected outside the machine, and the copying operation resumes after the ejection is completed. do.

3) If you choose to interrupt, resetting the original and ejecting the incomplete transfer paper as described in 2) is performed and the process ends.

By controlling in this way, the load on the operator can be reduced.

(Effects) The present invention is as described above, and according to the method of controlling a copying machine according to the present invention, the copying machine has a job tray for originals, an intermediate tray for transfer paper, and has various modes. In the machine, it is possible to reduce the burden on the operator of glue cover operations such as resetting originals after copying operation is interrupted and disposing of unfinished copy sheets in the intermediate tray.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of the entire copying machine according to an embodiment of the present invention, and FIGS. FIG. 3 is a schematic diagram showing the state of a document in a mode. q center V Figure 2

Claims (1)

[Claims] Copying machines that are equipped with a circulating automatic document feeder that circulates the copied original placed on the document table and sends it to the exposure section of the copying machine, may experience interruptions in various copying operations or interruptions in copying operations due to abnormalities such as paper jams. Continuation of a currently running copy operation,
It has a means for selecting either interruption or new start by pressing a key combination used in normal copying on the operating section and executing the operation corresponding to each, and when interruption is selected from the above selections, If you circulate the originals to align them on the original table in the initial state, eject the unfinished transfer paper stored in the intermediate tray for double-sided copying to the outside of the machine, and select a new start, the above operation will occur. A method for controlling a copying machine, characterized in that a new copying operation is started after the completion of the copying operation.