JPS59230928A - Paper feeding part selector - Google Patents

Abstract

PURPOSE:To make the order of priority to select plural paper feeding parts determinable according to the state of a copying machine, by installing a device judging the loading of a cassette and the presence of paper, a specifying device for paper size and a selective device altogether, in case of a setting method of an initial value for paper size selection in time of turning on the power for the copying machine and/or in time of automatic resetting after copying being over. CONSTITUTION:In a paper feeder capable of loading plural cassettes, each of devices 3-1-3-8 and 4-1-4-2 judging the loading of a cassette and the presence of paper and each of devices 5-1-5-5 specifying paper size in advance are all installed. At a device 2, when the paper size cassette specified by the said specifying device is loaded inside, the abovementioned cassette is selected in time of turning on the power and/or in time of copying being over. With this constitution, in times of turning on the power and/or getting through the copying, the most numerous paper size in terms of service frequency by a user in times of turning on the power and/or getting through the copying can be selected providing it enters either the upper step or the lower one so that this paper feeder is efficienct indeed. Moreover, according to user's requests, it also has a function capable of setting the desired paper size.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a paper feed section selection device in a copying machine equipped with a plurality of paper feed sections.

[Prior art]

In recent years, copying machines have become commonplace as they have cassettes for a plurality of paper sizes, allowing inexpensive copies to be made with paper sizes according to needs.

Conventionally, in such copying machines, when the power is turned on,
Some paper feeders have a function of selecting a specific paper feeder from among a plurality of paper feeders, for example, a paper feeder with two upper and lower stages, such as selecting the upper paper feeder.

[Problems with conventional technology]

However, this means that, for example, if the paper feed section is in the upper stage, the upper stage is always selected when the copying machine is powered on. For example, when the power is turned on, if there are upper, middle, and lower paper feed sections, the selection of the paper feed section cannot be specified, and initially only the same paper feed section can be selected. Therefore, for example, selecting only the upper row does not necessarily mean that frequently used paper sizes will be stored and selected, and there is a problem that even if less frequently used paper sizes are stored in the upper row, they will be selected. Ta. Furthermore, since the cassette is selected even if it is not set in the upper cassette, the operator must reselect the cassette containing the paper of the size to be used, or reload the paper in the upper cassette. There are also problems that make it unusable. Furthermore, since the same cassette is always selected when the power is turned on, the operator has the problem of copying with the wrong paper size.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks, and the present invention has been made in view of the above-mentioned drawbacks. It is an object of the present invention to provide a paper feed section selection device for a copying machine having a function of determining priority order for selecting paper feed sections.

[Key points of the invention]

In order to achieve the above object, the present invention includes a means for determining loading of a cassette and the presence or absence of paper, a means for specifying a paper size in advance, and a cassette having a paper size specified by the specifying means. The apparatus is characterized in that the apparatus further comprises selection means for selecting the cassette when the power is turned on and/or when copying is completed.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a control circuit configuration diagram when the copying machine has a 2' paper feeding section.

In the figure, a microcomputer 2 is connected to a PH'I'' desk 6 via a bus B. A paper size selection switch 5
-1. ...5-4. Minimum paper size selection switch 5-5
The signal from the microcomputer 2 input port i6
. . . input to i+o, and the common terminal of each paper size selection switch is connected to +■Cc, forming a controller 1.

In addition, the input port 11...i of the microcomputer 2
5 is a paper presence switch 4-1.4-2 A paper size detection switch 3 for knowing the paper size in the upper or lower row
-1. The signal line from 3-8 is connected. On the other hand, the signal from the output port O+ of Microconbuque 2 is sent to the upper paper size detection switch 3-1. ... 3-4 and the paper size detection switch 4-1, and then the lower paper size detection switch 3-5°...3-8 and the paper presence switch 4 via the inverter circuit 10. -2 is input to the common terminal. An operation console 6 connected to the microcomputer 2 via a bus B is provided with a paper size display 7, a cassette top/bottom display 8, and a cassette top/bottom selection key 9 for selecting the top and bottom cassettes.

In the figure, the microcomputer 2 selects the output port 0+ based on information from the cassette up/down selection keys 9 on the console 6.
When outputting “H” (high level) from 0+ to “L”, the upper cassette is selected;
(low level), the lower cassette is selected. Further, in connection with this selection of the upper and lower stages, the information selected by the paper presence switches 4-1 and 4-2 provided at the upper and lower stages is input to the input port i5 of the microcomputer 2. On the other hand, the input port i of the microcomputer 2
6...19 includes a paper size selection switch 5-1 that allows the user to select a desired paper size when the copying machine is turned on and/or when copying is completed. ...The information from 5-4 is input as a signal of paper sizes A4, B5, A3, and B4, for example. Further, a signal for selecting the minimum paper size from the minimum paper size selection switch 5-5 is input to the input port i+o. Then, the microcomputer 2 inputs the above information and performs cassette selection control in the paper feed section by a program based on the flow chart shown in FIGS.

FIG. 2 (al, (bl) is a flowchart of one embodiment of the present invention. Step 1 (processing at S, T-1) is when PO14EIll ON (power-on) of the copying machine is performed.
Perform the action.

First, the input port j+, .・
...It is detected by the signal from 3-4, and if no cassette is inserted in the upper row, the lower row is selected (S, T-2
processing). If the cassette is set in the upper row and not in the lower row, select the upper row (S,
T-3 treatment). Next, in the second priority order, when only one cassette 1- of the cassettes in the paper feed section contains paper, an operation is performed to select the cassette containing the paper. Signals from the upper and lower paper presence switches 4-1 and 4-2 are input to the input port i5 of the microcomputer 2, and if no paper is set in the upper cassette, the lower cassette is selected (S, T- 4). Next, if there is no paper in the lower cassette, select the upper cassette (
S.

Processing at T-5) 1. . As a result of operating in the above order,
If cassettes are set in both the lower cassettes and the microcomputer 2 receives a signal indicating that all paper is set in both the upper and lower cassettes, proceed to ■ and step 6 (S, T-6). processing). However, after the above-mentioned lower row selection process and upper row selection process are performed, the process moves to (2). In the third priority order, if the user specifies the cassette of the paper size that is most used, the specified cassette will be selected. First microcomputer 2
Based on the paper size selection signal input to the input ports i6, . . . t+o, the paper size selection switch 5 for paper size A4 is selected.
-1 is se-nodded or not (S, T
-6 processing). If this paper size selection switch 5-1
If it is ON, it is determined whether a cassette of paper size A4 is loaded or not based on the signal from the paper size detection switch 3-1.3-5. If the cassette/gutter is sewn (even if the cassette/gutter is sewn), a process for selecting a cassette with paper size A4 is performed and the process proceeds to (2). However, if this skein throat has not been sewn, select the minimum paper size selection switch 5-5.
is ON or OFF based on the signal input to the input port t+n of the microcomputer 2 (S,'
If the minimum paper size selection switch 5-5 is ON in this judgment, the B5 size cassette selection process is performed and the process moves to ■.On the other hand, if this switch is OFF, the A3 size cassette is selected. Perform the processing and move on to ■.If the paper size selection switch 5-1 for the paper size ^4 mentioned above is not ON, determine whether the paper size selection switch 7ch 5-2 for paper size B5 is ON or OFF. (S)
.

T-7 treatment). Paper size selection switch 5-2 is ON
In this case, the paper size B5 cassette set selection process or the judgment whether the minimum paper size selection switch 7ch 5-5 is ON or OFF is performed depending on whether the paper size B5 cassette/gutter is set (S, T -10), and if the minimum paper size selection switch 5-5 is ON, the paper size B5 selection process is performed, and if it is OFF, the paper size A3 color/gutter selection process is performed, and the process moves to ■. . The above process is carried out by turning on the paper size selection switch 5-3 for paper size A3.
, in the case of OFF (processing with S, T-8), paper size B4
If the paper size selection switch 5-4 is ON or OFF (
Processing at S and T-9) is also performed. And A
If 3. Paper size selection switch 5-3 is ON, A3
If a cassette of the same size is loaded, select the A3 size cassette. If three sizes of cassettes are not loaded, step 10 (S, T -1
0). If the paper size selection switch 5-3 for A3 size is OFF, the process advances to step 9 (processing in S and T-9). In the step 9 (processing in S, T-9), the paper size selection switch 5-4 of 84 is set to O.
In the case of N, if a B4 size cassette is loaded, the B4 size cassette is selected. If the B4 size cassette is not loaded, step 10 (S
, proceed to processing at T-10). Also, if the B4 paper size selection switch 5-4 is OFF, step 10 (S, ?-
Proceed to step 10).

After step 10 (processing in S and T-10), ■
Move to. If the user has not set the most used paper size selection switch, this is the last priority, and if the minimum paper size selection switch 5-5 is OFF among the multiple cassettes to be sent to the copier, the paper Select a size A3 cassette, and if ON, paper size B5
It is designed to select the cassette. In addition, the above-mentioned lower row selection process, upper row selection process, paper size A4, B5, A3,
The result of the B4 selection process is sent from the microcomputer 2 to the console 6 via bus B in a process not shown in the flowchart.
This is displayed on the paper size display 7 and cassette top/bottom display 8. - The process after moving to 10,000 determines whether the copying machine is in the process of copying (processing in S and T-11).

At this time, if a copy operation is in progress, the process waits until after copying of the specified paper size is completed. After this copying is completed, the copying machine is determined to be auto-resetting the paper size selected for the copy for approximately 60 seconds (processing in S and T-12), and this auto-reset timer is activated. When completed, move on to ■. This process returns to step 2 (processing at S and T-2) in order to select the initial paper size. In addition, Fig. 2 fa1. In the flowchart of (b), the paper feed units are set at the upper stage and the lower stage, and the paper sizes are set to A4, B5, A3, and B4, respectively, but the paper supply units may be multistage and the paper sizes may be set to other sizes.

〔Effect of the invention〕

As explained above, the present invention can be selected as long as the paper size most frequently used by the user is placed in either the upper or lower tray of the paper feed section when the power is turned on and/or when copying is completed, thereby achieving an efficient effect. have

Furthermore, it has a function that allows the user to select the desired paper size according to the user's request, and even if there is a sudden need to copy, as long as there is paper in one of the cassettes, the power can be turned on and/or copies can be made. It also has the useful aspect of selecting the cassette containing the paper when finished. Furthermore, by prioritizing these functions, it has become possible to use them efficiently according to the purpose of use.

[Brief explanation of the drawing]

Fig. 1 is a circuit configuration diagram of an embodiment of the present invention, Fig. 2 is a tag,
Tb) is a flowchart illustrating the operation flow of an embodiment of the present invention. 2...Microcomputer 3-1. '3-2
．． 3-3.1-4.1-5.3-6.3-7゜3-8・
...Paper size detection switch 4-1゜4-2...
Switch with paper 5-1.5-2.5-3.5-4
- Paper size selection switch 5-5 Minimum paper size selection switch 10 Inverter circuit 9 Cassette upper and lower selection keys Utility model registration applicant Casio Computer Co., Ltd. Same as above
ID Co., Ltd. Representative Patent Attorney Yoshiyuki Osuga Figure 2

Claims (6)

[Claims] (1) In a paper feeding device capable of loading a plurality of cassettes, a means for determining whether the cassettes/cassettes are loaded and whether there is paper, a means for specifying a paper size in advance, and a paper size specified by the specifying means. a selection device for selecting one of the cassettes when the power is turned on and/or when copying is completed when the cassette is loaded. (2) The paper feed section selection device according to claim 1, wherein the selection means is means for selecting a cassette when only one cassette is loaded. (3) The paper feed section selection device according to claim 1, wherein the selection means is a means for selecting one of the loaded cassettes when only one cassette has paper. . (4) The selection means selects a predetermined paper size if the paper size has not been specified by the specification means or if a cassette of the paper size is not loaded even if the specification has been made. 2. A paper feed section selection device according to claim 1, further comprising means. (5) The paper feed unit selection device according to claim 4, wherein the predetermined paper size is a minimum size paper. (6) The selection means automatically selects a cassette when the power is turned on and/or when copying is completed, selects that cassette when only one cassette is loaded, and selects that cassette when there is only one cassette containing paper. selects that cassette, selects that cassette if a cassette with a pre-specified paper size is loaded, selects that cassette if the paper size has not been specified in advance, or selects that cassette even if the paper size is specified. Claim 1 characterized in that if the selection is not made, the selection is performed in the order of the predetermined paper size.
The paper feed section selection device described in Section 1.