JPH0266041A - Copying machine - Google Patents

Abstract

PURPOSE:To make a machine convenient for use of paper in size excepting the assigned by displaying the paper when its detected paper size is a size excepting the assigned, in case of the copying machine which can be charged with paper of various sizes. CONSTITUTION:A paper size display part 93 enters sizes A3 to B5 of copying paper in metric size and an inch collectively displaying inch size copying paper. The display part respectively provides LED92a to 92e selected by a select key 92 and lighting the paper size of a cassette mounted to the first and second paper supply ports and LED92f to 92j performing the display being based on the size detected by a size detecting switch. The LED92e and 92j are constituted in a display part of paper size except the assigned. By this constitution, a machine, even when it is charged with the paper in size except the assigned, clearly displays the paper, so that the machine enables an adequate process to be performed, being convenient in use.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying machine that can be equipped with sheets of various sizes, and more specifically to a display unit that displays the sizes thereof.

[Prior art]

Copying machines that are equipped with paper of various sizes loaded into multiple cassettes, etc. are equipped with a display that shows what size paper is currently installed, and the user can The paper to be used is selected according to the display on the copy.

The size display on the display section as mentioned above is based on the standard size of paper in -G, and in the domestic specification, A3
．． Metric displays such as 84 are used, and inch displays such as 17"Xll" and Letter are used for overseas specifications.

By the way, if a copying machine with any size display uses paper of a standard size different from the paper corresponding to the display, for example, if a copying machine with a metric display also uses inch-sized paper,
Inch size paper is not displayed on the display. Therefore, it is necessary for the user to recognize the inch-sized paper in correspondence with one of the sizes of the metric display section. In other words, if the cassette is labeled as A3, for example, unless some measure is taken to make the user aware that the cassette is equipped with inch-sized paper instead of A3 paper, the size difference will occur. Copying errors occur due to this.

Therefore, copying machines have been developed that are capable of displaying characters in both metric and inch sizes using a display section using a dot matrix system, regardless of the specifications mentioned above.

[Problem to be Solved by the Invention] By the way, if it were possible to display both standard sizes in this way, the above-mentioned inconvenience would certainly be solved, but
Compared to a conventional display section using LEDs or the like, the cost of the display element becomes significantly higher. Also, most of the paper used for boat fishing is of one standard size that corresponds to its specifications, that is, the destination, and paper of different standard sizes from other countries does not require as many types. It is thought that there are many cases. In other words, if you frequently use several types of standard sizes for both destination and non-destination paper in terms of the proportion of paper used, there are advantages that compensate for the higher cost of display elements, but in many cases , the destination side will be the main focus, so the effect of high cost I/I will not be fully demonstrated.

The present invention has been made in view of the above circumstances, and provides a copier equipped with a display means that is capable of displaying not only the standard paper size specified by the specifications of the device but also a different standard paper size not specified. The aim is to provide machines at low cost.

[Means for Solving the Problems] A copying machine according to the present invention includes a display unit that displays the size of the paper installed in the paper feed unit, and the display unit displays information for each type of length unit. a display size specifying means for specifying one of the group of standardized paper sizes as a display size; a size detecting means for detecting the size of the paper in the paper feed section; and a detection result of the size detecting means is the display size specifying means. The present invention is characterized by comprising an unspecified paper size display section for displaying that paper of a paper size outside the designated group is installed when the paper size is different from the paper size within the group designated by the means.

[Function] When the size of the paper loaded in the paper feed section is detected, if the paper size is within the paper size group specified in advance on the display section, that paper size will be displayed on the display section. If the paper size is in an unspecified group different from the above group, it is displayed in the unspecified paper size display section.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on drawings showing embodiments thereof. FIG. 1 is a longitudinal sectional view showing the internal structure of a copying machine according to the present invention (hereinafter referred to as the present invention apparatus). In the figure, numeral 1 denotes a photosensitive drum having a photoconductive layer on its outer peripheral surface, and can be driven to rotate in the direction of arrow a. A charger 2 is arranged above the photoreceptor drum 1, and applies a constant electric charge to the surface of the photoreceptor tram 1. An image exposure device 3 is provided above the photosensitive drum 1 and the charger 2, and below the document table glass 30. The image exposure device 3 includes an exposure lamp 31 and a mirror that scan in the direction of the arrow. It consists of a group 32, a lens 33, etc., and forms an electrostatic latent image on the surface of the photoreceptor drum 1 corresponding to the image of the document placed on the document table glass 30.

A developing device 4 is provided at a position on the downstream side of the charger 2 in the rotational direction of the photosensitive drum 1, and the developing device 4 converts the electrostatic latent image formed on the surface of the photosensitive drum 1 by a magnetic brush method. Visualize it into a toner image. A transfer charger 5 is provided below the photoreceptor drum 1, and the transfer charger 5 receives copy paper (not shown) conveyed in the direction of arrow C.
An electric field is applied to the photosensitive drum 1 from its lower surface, and the toner image formed on the photosensitive drum 1 is transferred onto copy paper. A separation charger 6 is provided at a position on the downstream side of the transfer charger 5 in the rotational direction of the photoreceptor drum 1, and by applying an alternating current electric field to the copy paper immediately after transfer, it removes electricity from the copy paper and charges the photoreceptor drum. Peel off from the surface of 1.

A cleaning device 7 is provided at a position on the downstream side of the separation charger 6 in the rotational direction of the photoreceptor drum 1, and the cleaning device 7 uses a blade method to remove toner remaining on the surface of the photoreceptor drum 1.

An eraser lamp 8 is provided between the cleaning device 7 and the charger 2, and the eraser lamp 8 removes the charge remaining on the surface of the photoreceptor drum 1 by irradiating light in preparation for the next copying process. .

20 and 21 are cassettes for storing copy paper, and are removable from the first paper feed port and the second paper feed port provided in the main body. , paper feed rollers 12 and 13 for feeding the copy paper, and size detection switches 201 to 204, 20 for detecting the size of the copy paper.
5 to 208 are each equipped.

The size detection switch in this embodiment uses, for example, a reed switch, etc., and is coded according to the size of the copy paper to be stored, and the magnet attached to the cassette is detected by four switches. Ori,
The code is read based on whether each switch is turned on or off, and the type of cassette, that is, the size of the copy paper is determined.

Above the first paper feed port on the upper side where the cassette 20 is installed, the specifications of the main body are displayed at the time of shipment from the factory, the destination, that is, the area where metric size copy paper is used, and the area where inch size copy paper is used. A destination changeover switch 209 is provided as the display size specifying means for switching to a region, and this switch is normally disposed inside the main body so as not to be operated by the user.

The copy paper sent out by the paper feed roller 12 or 13 is conveyed in the direction of arrow C to the timing roller 9 and once stopped. Then, the copy paper is synchronously fed between the photoconductor drum 1 and the transfer charger 5 so that the toner image on the photoconductor drum 1 is transferred to a predetermined position on the copy paper, where the toner image is transferred. After that, it is separated by a separation charger 6 and sent to a fixing device 1 by a conveyor belt 10.

The fixing device 11 uses heat to melt and fix the toner image onto the copy paper. The copy paper with the image fixed thereon is discharged onto a paper discharge tray 14.

FIG. 2 shows an operation panel 70 provided at the front of the document table 30. As shown in FIG. 71 is a print key for starting the copying operation, and 72 is a display for the number of copies. Numeric keypad 80~
89 is mainly used for inputting and setting the number of copies. 90 is a key for interrupt copying, and 91 is a clear/stop key for canceling set numbers or interrupting copying.

Reference numeral 92 is a select key for selecting the copy paper displayed on the paper size display section 93, which is the main part of the present invention. The paper size display section 93 shows a display for regions that use metric size copy paper, and in this embodiment, "'A" is used as the display name for each metric size.
3°゛1'B4', "'A4"B5°', and "inch°" as a display name for collectively displaying inch-sized copy sheets.

Two types of LEDs are provided for each of these sizes, L
Eo 92f, 92g, 92h, 92i, 92j are
The size detection switches 201 to 204, 205 to 208 detect the paper size of the cassettes installed in both paper feed ports.
This is for detecting and lighting up the LED 92
a, 92b, 92c, 92d, and 92e are used to illuminate and display the paper size of the cassette installed in the first or second paper feed port selected by the select key 92. That is, in this case LEDs 92j and 92
e constitutes the unspecified paper size display section.

The display on the paper size display section 93 for regions that use inch-sized copy paper is as shown in FIG.
LEDs 92a to 92d and LEDs 92f to 92
i is "17'Xll'" of each inch size,
“Legal” “Letter +”1n
LED 92e and 92j
is now compatible with M[1TRIC], which displays metric sizes all at once.There is also an operation panel for areas that use metric size copy paper and an operation panel for areas that use inch size copy paper. It is compatible with the other printers except for the paper size display, and can be replaced by changing the destination selector switch.

Exposure up/down keys 94 and 95 allow the density of the copied image to be set in stages.

FIG. 4 is a block diagram of the control circuit of the apparatus of the present invention, which includes a microcomputer (CPU) 2 for controlling copying operations.
01 is a switch matrix 210.01 consisting of a group of keys on the operation panel and switch sections for various sensors. Number of sheets display section 72 and LED 92a for displaying paper size
92j are connected via the decoder 211, and the destination changeover switch 209 is also connected. On the other hand, the output boat section includes a main motor (not shown),
Developing motor, timing roller clutch, paper feed roller 2
0.21 clutch.

Electric charger 2. Respective drive circuits (not shown) such as the transfer charger 5 are connected thereto. Also, CPt120
Reference numeral 1 communicates data with a CPU (not shown) for controlling the scanning optical system.

Next, refer to the flowcharts in Figure 5 and below to
The control procedure by 201 will be explained.

FIG. 5 shows the main routine of CPU 201. When the power is turned on, the CPU 201 is reset, and the program is started, first in step S1, the RAM is cleared, various registers are initialized, and initial settings are made to put each device into the initial mode. Next, in step S2, an internal timer is started.

This internal timer determines the time required for one routine of the main routine, regardless of the processing content in the subroutine described below, and its value is set in advance in initial setting step S1.

Next, the subroutines shown in steps 53 to S5 are sequentially called, and when the processing is completed, the process waits for the internal timer to end in step S6, and then returns to step S2. The length of time of this one routine is used to count various timers used in other processing subroutines in step S5, such as a timer for copy control sequence control.

The other processing subroutines mainly control copying, and also control communication with other CPUs.

The stored size display routine in step S3 indicates that the current cylinder 1.
This is to display the size of the copy paper stored in the cassette installed in each second paper feed port, and as shown in FIG. 6, first determine whether the destination cut switch 209 is on or off. Step 531), if this is on, it is assumed that the specification is for metric size display, and the size code of the cassette installed in the first paper feed slot is detected by the size detection switches 201 to 204 and input (step 5
32).

This size code is set as shown in FIG. 10, and an IO size code is assigned in correspondence with a binary code based on the on/off combination detected by each size detection switch. In this embodiment, size codes 1 to 4 are assigned to metric display sizes, and 9 to 12 are assigned to inch display sizes. For example, if the input binary code is 0010, the size code will be 2, indicating that the cassette contains B4 copy paper.

When the size code of the first paper feed port is input, the LED of the size corresponding to the input size code is turned on in the next metric size display routine (step 533).

The contents of this metric size display routine are shown in Figure 7 (a
). Any size code from 1 to 4, i.e. metric size A3-B5 where the copy paper matches the specifications.
If any of the above, turn on the corresponding LEo 92f to 92i, and if the size code is 9 to 12, that is, if the copy paper is in an inch size different from the specifications,
Regardless of its size, the LED 92j is turned on, that is, it displays "inches".

When the storage size of the copy paper in the first paper feed port is thus displayed, the storage size of the copy paper in the second paper feed port is similarly displayed (steps S34, 535).

On the other hand, when the destination selector switch 209 is off, it is assumed that the inch size display is specified, and the size display section 93 shown in FIG. (steps 536 to 539).

Note that step S37. The inch size display routine of S39 is as shown in Fig. 7, etc.), and in this case,
On the other hand, if the size code is 1 to 4, it is different from the specifications and has nothing to do with the size (turn on LED 92j, that is, "MET").
RIC" is displayed, and when the size code is 9 to 12, one of the LEDs 92f to 92i of the corresponding size is turned on.

FIG. 8 shows the paper selection routine in step S4. When the select key 92 is turned on when copying is not in progress (steps S41, 542), if the first paper feed port is currently selected at that edge, the second paper feed port is selected. If the second paper feed port is selected, the first paper feed port is selected and the paper size code is entered manually (steps S43 to S545).

Then, the paper size conversion routine of step S46 is called.

FIG. 9 shows the paper size conversion routine. First, the specification is determined by setting the destination changeover switch 209 (Step 547). If the specification is for metric size display, the process proceeds to step S48. If the specification is for inch size display, the process proceeds to step S48). respectively proceed to step S49. First, in the metric size display specifications, if the paper size code input from the selected paper feed slot is one of 1 to 4 or 9 to 12, the LEDs 92a to 4 corresponding to the corresponding size Turn on one of the LEDs 92d and exclude the other LEDs, that is, the ones that are turned on (LIED 92a
- Turn off the display of 92e, and LE for 9-12
Turn on D 92e and turn on the other LEDs 92a to 92.
Turn off the display of d.

On the other hand, when the paper size code is other than the above-mentioned 1 to 4 and 9 to 12, the display of all the LEDs 92a to 92e is turned off.

Next, in the inch size display specifications, if the paper size code is 1 to 4, LfiD 92e is turned on, and the other LEDs 92a to 92d are turned off.
If it is any one of 9 to 12, turn on any of the LEDs 92a to 92d corresponding to the corresponding size, remove the turned on LED (turn off the display of LEDs 92a to 92e, and similarly Code 1-4,
In cases other than 9 to 12, all LEDs 92a to 92
Turn off the display of e.

A display example based on the above control procedure will be explained with reference to the metric display specifications shown in FIG. First, as an example of normal use according to the specifications, a cassette containing A3 size paper is installed in the first paper feed port, and a cassette containing 85 size paper is installed in the second paper feed port. Then, the LEDs 92f and 92i indicating this are lit, and if the first paper feed port is currently selected, the LED 92a is lit. When the select key 92 is turned on once in this state, the second paper feed port is selected and the LED
92a is turned off and LED 92d is turned on.

Now, next time a cassette containing, for example, Letter size paper is installed in the second paper feed slot, L[! D 92j lights up. This allows the user to recognize that inch-sized paper is installed, and when the user selects the second paper feed port, the LIE
o 92e is lit and the inch size, that is, Le t
ter size paper can be used.

〔effect〕

As described above, the copying machine according to the present invention does not require high costs for display elements, etc., and can not only handle copy paper sizes of a standard that corresponds to the specifications set for the device, but also copy paper of a different standard. The present invention has excellent effects, such as being able to clearly display information and providing convenience for the user, even when a computer is installed.

[Brief explanation of the drawing]

FIG. 1 is a joint cross-sectional view showing the internal structure of a copying machine according to the present invention, FIG. 2 is a layout diagram of the operation panel, FIG. 3 is a plan view showing another embodiment of the main part, and FIG. A block diagram of the control system, FIGS. 5 to 9 are flowcharts showing the cpυ control procedure, and FIG. 10 is a size code assignment diagram. 1... Photosensitive drum 20.21... Cassette 9
2...Select key 93...Paper size display section 92a-92j...LED 201...C
PU Patent Applicant Minolta Camera Co., Ltd. Agent Patent Attorney Noboru Kono and 92°i deposit γ92h ”2d〜binvo ice (7”92'92e−
Mouth, 6e. sc O~92jI:I't! Diagram: Funeral diagram (a) (b) Diagram: Funeral diagram (a) (b) Diagram: Funeral diagram (a) (b)

Claims (1)

[Scope of Claims] 1. A copying machine equipped with a display section that displays the size of the paper installed in the paper feed section, wherein the display section displays one of the groups of paper sizes standardized for each type of length unit. display size specifying means for specifying one as the display size; size detecting means for detecting the size of paper in the paper feed section; 1. A copying machine comprising: a non-designated paper size display section that displays, when the paper size is different from the paper size, a non-designated paper size display section that displays that paper of a paper size outside the designated group is installed.