JPS58116551A - Cassette selector of copying machine - Google Patents

Abstract

PURPOSE:To select a cassette easily by providing cassette loading detecting means for detecting the loading of cassettes and a means for selecting a cassette corresponding to output variation of each detecting means. CONSTITUTION:A cassette changeover key 3C, reed switch 6a (upper) for detecting upper-stage cassette loading, reed switch 6a (lower) for detecting lower- stage cassette loading, and reed switches 6b (upper), 6c (upper), 6b (lower), and 6c (lower) for detecting cassette sizes of an upper and a lower stage are provided. Further, FFs 7, 15, and 16, monostable multivibrators 8-10, OR circuits 11, 12, 19, and 20, AND circuits 13, 14, 17, 18, and 21-23, and NOT circuits 24- 26 are provided to select a cassette.

Description

[Detailed description of the invention] The present invention relates to a cassette selection device for a copying machine.

If you want to make a copy using transfer paper of a size other than the cassette currently installed in a cassette-fed copying machine, with conventional copiers, you can remove one of the cassettes currently installed and use it. Power cassette 1-install or
Currently vacant case.

In addition to selecting the cassette to be used for Toro, it was necessary to operate a lever or key to select A for that cassette.

This makes the operation complicated, and if a user forgets to switch the lever or key, there is a problem that paper may be fed from an unintended cassette.

The present invention eliminates the above-mentioned problems of the conventional device and automatically selects the cassette by simply inserting the cassette.The present invention simplifies the cassette selection operation and eliminates troubles such as forgetting to set the cassette. The object of the present invention is to provide a cassette selection device.

In order to achieve this goal, a cassette installation detection means and a size detection means are provided at the cassette installation position, and a cassette is automatically selected in response to a change in the output of any of the above detection means caused by the installation of a new cassette or cassette. Being able to do this is considered a sexual characteristic.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of a copying machine according to an embodiment of the present invention, in which 1 is the main body of the copying machine, 2 is the upper and lower cassettes installed in the IK of the main body of the copying machine, and 3 is the operation channel Z4. ,
4 is a paper discharge tray.

As shown in FIG. 2, on this operation panel 3, there is a cassette selection display 3as that displays the selection status of the upper and lower cassettes 2, a size selection display 3b that displays the selected cassette (transfer paper) size, A cassette switching key 3C is arranged. Furthermore, 3d indicates various abnormality indicators such as jam and toner exhaustion, 3. indicates the number of sheets, 3f indicates numeric keypad, and 3gV.
i concentration setting key, 3h is the main switch.

On the other hand, in order to detect that the cassette 2 is completely installed in the copying machine main body 1, a magnet 5a is embedded in the cassette 2KFi as shown in FIG. A reed switch 6a is attached. Furthermore, the cassette 2 is equipped with magnets 5b and/or ld for detecting the size of the cassette 2.
5c is embedded, while reed switches 6b and 6c are attached to the copying machine main body 1 side. That is,
The magnet embedded in the cassette 2) 5b, 5c Compared to the Fi size, the one with a turret is suitable for combinations with forest conditions. In other words, the reed switch 6b moves with these magnets.

6c ON, OFF forest state 6, combinations shown in Table 1 below, rainbow, and cassette size are detected.

Table 1 FIG. 4 shows a configuration diagram of a control circuit according to an embodiment of the present invention that automatically selects the cassette 2 when it is installed in the copying machine main body 1, so 3C is shown in FIG. 6m (top) is the reed switch that detects the installation of the upper cassette explained in Fig. 3, 6a (bottom) is the reed switch that also detects the installation of the lower cassette,
Also, 6 b (top), 6 c (top) work 6 b ff)
, 6c (lower) t-j Reed switches for detecting the sizes of the upper and lower cassettes. In history, 7, 15. 16 is flip frog, 8-10 Fi mono multi, 11, 12
．． 19.20 is an OR circuit, 13.14.17.18.2
1 to 23 FiAND circuits, and 24 to 26 d NOT circuits.

In *a above, the copying machine main body 1 has an A4 size cassette 2 installed in the upper part and an A3 size cassette 2 in the lower part, and now the upper part cassette ) (A4 size) is selected. Therefore, currently, Lead Sui, Chiro m (top), 6aσ)F
Both i are ON, and also lead switch, chiro b Q:), 6
e (top) Fi both ON, reed switch 6b (bottom) Fi
OFF, reed switch 6e (lower) is ON.

Further, the flip-frog 15 is held ON, the (±) of the cassette selection display 3a is lit for swearing, and the (A4) of the size selection display 3b is lit for swearing.

In this state, if the operator wants to copy 84 size, for example, if he pulls out the lower cassette (A3 size) and inserts a B4 size cassette, the reed switch 6m (lower) will be It turns OFF when removed, but turns ON again when the 84 cassette is installed.The monomulti 10 operates at the rising edge of this reed switch Chiro a (bottom) when it turns ON, and a pulse is generated.

Due to this mother Rus, the flip-flop 16 is 7t,
Flip Frog 1 Ugari 7, becomes Torin state and automatically lowers.

mode. That is, the lower cassette selection display signal is displayed on the cassette selection display 3.
When (1) of a is illuminated and a paper feed signal is input, the AND circuit 18 outputs a paper feed signal for the lower cassette, and paper is fed from the lower cassette. Also, B4
When the cassette is installed, the reed switch 6b (lower) is set to O.
N, 6c (lower) is turned OFF, and 84 on the size selection display 3b is displayed as being lit by the output of the AND circuit 22. At the same time, the output of the frame circuit 22 is used by a main control circuit (not shown) to control processes such as the scanner return position and the site erase width.

On the other hand, if you wish to switch between upper and lower cassettes other than when replacing cassettes, press cassette switching key 3cg. Then, the state of flip-flop 7 is switched, and the state of flip-flop 15 or 16 is switched by the output from Fi9, which is weaker than monomulti 8 compared to the output of 7, and this causes the switching of the cassette. A selection is made.

FIG. 5 shows another embodiment of the present invention (a
) Id is a configuration diagram of a portion corresponding to the cassette selection display 3 &, size selection display 3 b % cassette switching key 3C on the operation a4 channel 3 in the above embodiment. In this embodiment, the upper and lower cassettes 1 are selected separately, and the selected state tl - the cassette to be displayed, ) selection/display key 3I, and all cassette sizes installed in the copying machine body 1 are displayed respectively. Size selection display 33t-display 3m, 3b,
It is provided in place of the switching key 3C. Also, (b) t-
j 411# of the cassette selection control circuit: In the figure,
The same reference numerals as in FIG. 4 indicate the same or corresponding parts. Furthermore, 2
7.28, 33゜34rriOR@IN, 29-32F
iANDlill path.

Further, the other components of w and composition are the same as those of the previous embodiment.

Assume that in the above case of i#4, an A4 cassette and an A3 cassette are installed in the upper part of the copying machine main body 1, and an A3 cassette is installed in the lower part, and the lower cassette is selected. Then, the reed switches 6b, 6
The earth represents the ON and OFF states of e.

A lower blade set size display signal is output, and as a result, A4 and A3 of the size selection display i31 are displayed as being illuminated. In addition, when the lower cassette is selected, the flip-flop 16 is set (1#), and the lower cassette selection display signal output from the lower cassette select/display key 31 (lower)
is lit. At the same time, the selected size signal output from the OR circuits 33 and 34 via the AND circuits 3x and 3zt is output to the main control circuit and used for process control, as in the previous embodiment.

In this state, as in the previous embodiment, the lower A3 cassette 'j
-84 case, G, the OR circuit 12 operates at the rising edge of the OR circuit 28 output, and the flip-flop 16 turns 7,
The lower cassette mode is set. On the other hand, if you want to switch this mode to the upper cassette mode, press the size selection display 31 (upper). Then, OR circuit 11. A
A set signal is applied to flip-flop 15 via ND circuit 13', and a set signal is applied to flip-flop 16, resulting in switching to the upper cassette mode.

In this embodiment, Kn, IJ-de switch 6 b
+ 6 e also serves as the cassette loading detection switch, so magma in reed switch low a and cassette 2,
The port 5a becomes unsanitary.

Further, in the above embodiment, the case where the cassette is arranged in two stages, upper and lower, has been described, but the present invention is not limited to this, and a plurality of stages can be provided. It goes without saying that the size of the paper can also be set arbitrarily. Furthermore, it goes without saying that a tray may be used instead of the cassette.

As described above, according to the present invention, the selection of the cassette is automatically performed just by loading the cassette into the copying machine, and as a result, there is no need for the complicated operations required in the past. There will be no troubles caused by forgetting things.

[Brief explanation of the drawing]

Figure 1 is an external perspective view of a copying machine according to an embodiment of the present invention;
Figure 2 is a configuration diagram of its operation and motherboard surface, Figure 3 is an explanatory diagram of the cassette installation and cassette size detection mechanism, Figure 4 is a control circuit diagram of item 7, and Figure 5 (, ) is the main part of the book. FIG. 5(b), which is a partial diagram of the operation panel surface according to another embodiment of the invention, is a control circuit diagram thereof. DESCRIPTION OF SYMBOLS 1... Subject body, 2... Cassette, 3... Operation spring, 3a... Cassette selection display, 3b, 3j.
...Size selection display, 3C...Cassette switching key,
3d... Abnormality indicator, 3... Number of sheets indicator, 3f.
...Numeric keypad, 3g...Concentration setting key, 3h...Main switch, 31...Power seven selection and display key, 4
... Paper output tray, 51-5c ... Mag mat, 61
~6 c river reed switch, 7,15.16...flip flop, 8~10...mono multi, 11.1
2,19,20°27.28,33.34...OR circuit, 13.14°17.18.21~23.29~32
...AND circuit, 24-26...NOT circuit. Essay 2 Figure 7

Claims (4)

[Claims] (1) In a cassette selection device for a subject that can mount multiple cassettes, each cassette mounting detection means detects that a cassette is mounted, and the output of each of these cassette mounting detection means changes in response to vc. and means for selecting a cassette in which a cassette is generated. (2) - A cassette selection device for a subject according to claim 1, wherein each cassette size detection means is provided on the screen and the size of the installed cassette is displayed as a t% indication. (3) 4I! + In the scope of Xu Zhaoqi described in paragraph 1,
A cassette selection device of a photographing machine whose hook is to stop the selection operation of the cassette during copying. (4) The cassette selection device for a copying machine as set forth in claim 2, wherein each cassette and the size detection means are also used as the cassette size detection means.