JPS5822234A - Apparatus for measuring and indicating thickness of blank - Google Patents

Abstract

PURPOSE:To prevent interruption of printing operation or the like by automatically judging whether or not a blank has such thickness as to choke a printing press or the like and indicating the judgement through letters, voices, etc. CONSTITUTION:When, for example in a thickness setting circuit 19 only the upper limit value of blank thickness is set, the measured value and set value of the thickness of a blank 8 are compared with each other by a thickness measuring section 7. When the measured value is not larger than the set value, a switch circuit 13 is turned on so that the blank 8 is sent by drive control circuits 12, 15 and a feed roll 6. Also, at the same time a display controlling circuit 20 and a display section 21 indicate that the blank is fed. When the measured value of the thickness of blank 8 is larger than the set one, the switch 13 is kept turned off so that the feed of the blanket is blocked while the display section 21 indicates that choking of feed.

Description

Detailed Description of the Invention The present invention automatically measures the thickness of the paper in the printing and copying section, determines whether it is within the preset thickness of the nine standard gardens, and controls the use of the paper. Possible cape, character.

This invention relates to a paper thickness measurement and display device that displays information using ITP or the like.

In printing devices, plotting devices, copying devices, etc., there are many restrictions on the thickness of paper that can be used depending on the paper feeding mechanism and printing mechanism, and if the thickness of the paper is too thick, Otherwise, paper will be left behind. Conventionally, the handler checks the thickness of the paper in advance to confirm whether the paper is thick enough to use, but in general, the paper thickness is not accurately measured. However, it depends on the intuition of the operator. Therefore, when using various types of paper, paper jams occur and printing operations have to be interrupted.

The present invention eliminates the above-mentioned drawbacks of the conventional Chiyu, and automatically determines whether or not the paper is thick enough to cause paper jams in printing machines, etc. The purpose of this is to display information in text, voice, etc. Examples will be described in detail below.

Figure W11 is a detailed explanatory diagram of the present invention, and shows the case where the present invention is applied to a copying machine. In the figure, 1 is a photosensitive drum, 2 is a developing section, 5 is a cleaning section, 4 is a light source, 5 is a control circuit, 4g, 44 is a paper feed roller, 7. ．． 74 expansion thickness measuring section, aa, s6 are paper of 85th edition and 14th edition, 9a, ? &11 table. Paper aa, a4
is set on table 9th, 9, paper feed 9
0-') 6a + 6k sends the top paper to thickness measurement 117g+74, and the control circuit 5 selects M8m*ak for multiple types according to the paper designation signal when it is set. The thickness of the paper sheet or 8& is measured, and the setting Ii! It is determined whether the thickness is within the range.
, the results are displayed (by lamps, letters, signal tones, sounds, etc.). Note that charging of the photosensitive drum 1, light image irradiation, and development section 2
The structure of visualization, transfer to fed paper, cleaning after transfer by cleaner section 3, fixing of toner image transferred to paper, etc. is similar to that of a normal copying machine. be.

#! Figure 2 is a wall block diagram of an embodiment of the present invention.
7 is a thickness measuring unit that detects the paper thickness t by the displacement of a measuring roller; 8 is a stack of sheets; 9 is a table pushed upward by a spring, etc.; The feeder roller 6 is displaced upward by the upward force of the table 9.
a limit switch for detecting that the paper 8 is being sent; 12 a feed drive control circuit for controlling the drive of the feed roller 6; 13 a switch circuit; 14 a start button;
15 is a drive control circuit that controls the paper transport mechanism and the like during document feeding; 16 is a measurement control circuit that controls the thickness measuring section 7t;
7 A conversion circuit that converts the measured value into pure binary, ECD code, etc., 18 a comparison circuit, 19 a thickness setting circuit that sets the thickness of paper that can be used, 20 a display control circuit, and 21 a lamp. This is a display unit that has functions such as displaying a single character, generating a signal sound, and playing audio.

When the paper 8 is set on the table 9, the paper 8 is moved by the push-up blade of the table 9 and the feed lever 26 by the spring 10.
t limit switch 11.
Detect with. Feed drive system? The liJ (gl circuit 2 receives the detection signal from the limit switch 11) and drives the feed roller 6 in the direction of the arrow for a certain period of time so that the paper 8t is fed to the thickness measuring section 7. As shown in FIG.
! The rack 24 is movably supported and meshed with the pinion 25, and an encoder 26 is coupled to the shaft of the pinion 25. As the rack 24 moves downward according to the thickness of the paper 8, the pinion 25 is provided with a rotation angle that is adjusted to a higher angle. After conversion, the encoder 26 outputs a signal indicating the thickness 1. Also rack 24
It is also possible to adopt a configuration in which the amount of movement is detected by a differential transformer or the like.

The measurement control circuit 16 supplies power, amplifies signals, etc. in accordance with the configuration of the constant thickness section 7, and also performs paper designation when multiple types of paper 8a*8j are set, as shown in FIG. The constant thickness portion 7m or 7& is selected according to the signal, and the measurement by the selected measuring portion 7m or 7& is controlled.

The conversion circuit 17 converts into a signal format compatible with the comparison operation function in the Hiro comparison Oji 1B.The thickness setting circuit 19 sets the upper limit of the thickness of the sheet 8 for memory writing, dial setting, etc. The lower limit is set, and the setting signal is, for example, BCD.
If the code is applied to the comparison circuit 18, the conversion circuit 17 is also configured to convert it into a BCD code and add it to the comparison circuit 18. Note that if the encoder 26 of the thickness measuring section 7 is a BCD code encoder, the conversion circuit 17t may be omitted.

In the thickness setting circuit 19, for example, if only the upper limit value of the paper thickness is set to 9, the measured value of the thickness of the paper 8 by the thickness measuring section 7 is compared with the set value, and the measured value is If it is not larger than the set value, the output of the comparison circuit 18 turns on the switch circuit 13Fi, and the display control circuit 20 uses the output of the comparison circuit 18 to display a lamp display, 9-character display, audio display, etc. to indicate that copying is possible. Either one or a combination thereof causes the display operation of display $21 to be performed. Based on this, when the start button 14t is pressed, the start signal is sent to the switch circuit 1st.
- is added to the feed drive control circuit 12 and the drive control circuit 15 through the feed roller 6 to control the rotation of the photosensitive drum 10, document feed, etc.
is sent out. Further, when the number of copies is set in advance, the set number of sheets is fed sequentially in the known manner RK.

If the measured thickness of the paper 8 is larger than the set value, the switch circuit 13 is turned off by the output of the comparison circuit 18, and the display control surface 20 displays a lamp indicating that the paper is too thick. The display unit 21 displays nine characters, displays a signal sound such as a warning sound, and displays a voice. In this case, even if the start button 14t is pressed, the switch circuit 1!1 is off, so the feed drive control circuit 12 and the drive control circuit 15 do not operate9, and paper jams can be prevented.

Further, as the setting value of the paper thickness, as shown in the schematic flowchart of FIG. 4, the paper thickness safe range upper limit setting value t11,
Paper thickness alarm range upper limit set value 12 and thickness.

can be set in the setting circuit 19. Then, the measured value t of the thickness of the paper 8 by the thickness measurement unit 7 is compared with the paper thickness safe range upper limit set value tjlj, and if the relationship -≦tj1 is satisfied, copying operation can be performed safely, so the text is displayed. ``Please copy'' is displayed as an audio display, and the switch circuit 13 is turned on.

Also, if t > 1411 and g < gfi2, paper jams will not occur if you operate with care.

A message such as "Please copy with caution" is displayed as text and voice to warn the operator, and the switch circuit 13 is turned on.

If t > tlL2, the thickness of the paper 8 is greater than the upper limit set value, so the paper jam 9 will not occur, so the switch circuit 15 is turned off, and the text display and voice display prevent the paper from jamming. Displays information such as the need for replacement.

Since the voice display is a relatively short message, it may be provided in the simple voice synthesis channel display unit 21, and in response to the comparison output of the comparison circuit 18, a voice synthesis output of the optical content may be created and displayed to the operator. can.

As described above, the present invention has a thickness measuring section 7. Thickness setting circuit 19% Comparison circuit 18 that compares the measured thickness value and the set value. Depending on the comparison result, the lamp display, 9 character display, signal sound display, voice display, etc. are used to determine the use of the set paper. It has a display section 21 that displays whether or not it is acceptable, and a switch circuit 15, and automatically measures the thickness of the paper 8 that is set in the thickness measuring section 7, and displays the set value and measured value of the upper limit of paper thickness. The printing device compares and displays the results of the comparison.

When applied to a plotting device, a copying device, etc., there is an advantage that it is possible to display to the operator whether paper can be used or not, and to prevent paper jams.

[Brief explanation of drawings]

Fig. 1 is a detailed explanatory diagram of the present invention applied to a copying machine, Fig. 2 is a block diagram of main parts of an embodiment of the present invention, and Fig. 5 is an explanatory diagram of the configuration of an example of the thickness measuring section, M4 diagram. 1 is a schematic flowchart of an embodiment of the present invention. 6, 6g, 6b are feed) roller > 7+ ya, 7
8.8. , l is paper, 9.9st9
- is a table, 11 is a +7 switch, 12 is a feed drive control sub-path, 15 is a switch circuit, 14 is a start button, 15 is a drive control circuit, 16 is a measurement control circuit, 17 is a conversion circuit, 1B is a comparison circuit , 19 is a thickness setting circuit, 20
21 is a display control circuit, and 21 is a display section. Patent applicant Fujitsu Ltd. Representative Patent Attorney Tamamushi Gobu and 5 other people

Claims (1)

[Claims] A thickness measuring section that measures the thickness of paper, a thickness setting circuit that sets the thickness of usable paper, a value measured by the thickness measuring section and a setting value of the thickness switching circuit. A comparison circuit that compares
A lamp indicates whether or not the set paper can be used depending on the comparison output of the cough comparison circuit. A display unit that displays at least one of text display, signal sound display, and audio display or a combination thereof, and when the comparison output of the circuit indicates that the set large paper cannot be used, the paper is not sent. A paper thickness measurement and display device with a control circuit and a switch circuit for inhibiting f: 1fII mold.