JPS59146042A - Copying machine - Google Patents

Abstract

PURPOSE:To eliminate the need for judgement processing wherein magnification data is compared with reference data after being read out, by storing an ROM as a storage means with flag data which indicates whether proper magnification and proper direction are set or not in addition to displacement data. CONSTITUTION:The copying machine consists of a central processing unit (CPU) 1, ROM1a stored with the control part program of the CPU, variable magnification table, etc., an original size detection part 2 consisting of plural reflection type photosensors, a form size detector 3 which detects form size from the positions and number of projections provided to a paper feed cassette, an operation display part 4, and an optical system control part 5 which controls copy magnification, etc. The ROM as the storage means is stored with flag data which indicates whether proper magnification and a proper direction are set or not in addition to variable magnification data, so the need for the judgement processing wherein magnification data is compared with reference data after being read out is eliminated, thereby simplifying a processing program.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a copying machine equipped with a size uniformity mode.

[Prior art] In recent years, different sizes such as A3. B4. 2. Description of the Related Art Copying machines equipped with a size uniformity mode for copying an A4-size original by completely fitting it onto copy paper of a certain size, for example, A4'i'4J, are in practical use. With this copier, you can easily file copies of documents, especially when you only have one type of paper for copying, especially when the size is large! You can obtain effects such as being able to copy everything.

However, with such a conventional device, the first copy process is not performed on the original (if the copy paper is too large or too small, the processing described in the example is also practical). This resulted in the inconvenience that the image on the copy paper was too small and had too many blank spaces. Also,
Even if the orientation of the original document and the copy paper are different, the copying process is continued as is, resulting in the inconvenience that part of the original is not copied onto the copy paper.

〔the purpose〕

SUMMARY OF THE INVENTION It is an object of the present invention to provide a copying machine that eliminates the above-mentioned inconveniences and is capable of making uniformly sized copies.

〔composition〕

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

FIG. 1 shows a control system according to an embodiment of the present invention. In the figure, 1 is a CPU that executes control to be described later.
(Central processing unit), 1a is a ROM (1a) that stores a control program for the CPU 1 and a variable magnification table (described later), etc.
(read-only memory), 2 is the document size detection unit consisting of a plurality of reflective photosensors attached to the pressure plate that presses the document onto the optical scanning surface, and 3 is the position of the protrusion attached to the paper feed cassette. and a paper size detector for detecting the paper size from a number; 4 is an operation display section to be described later; and 5 is an optical system control section for controlling copying magnification and the like.

FIG. 2 shows a specific example of the document size detection section 2.
It is composed of six reflective photosensors 81 to S6 disposed on the surface of a pressure plate (not shown) in contact with the original.

The CPU 1 determines the size of the document based on the outputs of these sensors S1 to S6 and with reference to Table 1 below.

Note that the paper size section in Table 1 corresponds to the paper size shown in Figure 2. Sizes with R such as A4R and B4R indicate that the original is placed vertically. It shows that there is. (Margins below C) Table 1, FIG. 3 shows a specific example of the paper size detection section 3.

In the figure, five photointerrupters 811 to 815 constituting the paper size detection section 3 are arranged in a row inside the copying machine building (not shown) corresponding to the mounting position of the paper feed cassette 6.

On the other hand, a projection 6a for size display is attached to one end of the paper feed cassette 6, and the size and orientation of the sheets to be accommodated are indicated by the position and combination of the projection 6a.

Therefore, when the paper feed cassette 6 is attached to the copying machine, the photo ink rack corresponding to the position of the protrusion 6a is shielded from light, so that the output of the photo interacitors Sll to S15 and the size of the paper stored in the paper feed cassette 6 are There is a one-to-one correspondence, and based on this, the CPU 1 determines the paper size.

FIG. 4 shows a specific example of the operation display unit 4. In the figure, 4 is a variable magnification display that displays the copy magnification; 4b
4C is a direction confirmation display that allows the operator to confirm the paper size, 4d is a document size display that displays the size of the document, and 4e is a document size display that allows the operator to confirm the paper size. A mode display displays various modes, and a paper size display 4f displays paper size.

4g is a magnification selection key for selecting a magnification ratio, 4h is a mode switching key, 41 is a paper feed selection key for selecting a paper feed cassette, and 4j is a size uniformity key for selecting a size uniformity mode.

FIG. 5 shows the storage contents of the ROM 1a. This R
OM1a has a storage capacity of 12 bytes and is located at address 0.
OH (may the H be a hexadecimal number) ~3000
The entire copying machine is Grodarum for the part-time job at 8 up to H.
3000H~37FFH'? In the 2nd byte, there is a data table for scaling such as scaling data, which will be described later, at 37FFH.
The second byte in ~3FFFH stores other data tables.

Table 2 shows part of the contents of the scaling data table. R
8-bit magnification data for a platform with paper size A3 is stored in the storage area of addresses 3000H to 300F'H of OM1a, and 8-bit magnification data for a paper size of B4 is stored in the storage area of addresses 3010H to 301FH. are doing.

The lower 4 bits of the 8-bit magnification data in this table are magnification data that shows the magnification when the paper size and original size in the notes column are combined, and the 7th bit (column "6") is the Vertical: 321 check flag that is set to ``1'' when the upper copy image is slightly offset and the vertical and horizontal directions of the original and the paper do not match.
(column r7J) is an appropriate amount rate check flag that is set to "1" when the document is too thick or too small for the paper. Note that the fifth and sixth bits are not used as data, and are stored as 0, for example.

(Jlj l minus 111) Also, the data table for scaling for other paper sizes is stored at address 3020 of ROM1a as shown in Table 3.
Data for paper size A4 is stored in H~302FH, and paper size B5 is stored in address 30' 30H~303FH.
Data for paper size A4R (vertical for A4) is stored in addresses 3040H to 304FH, data for paper size B5R (vertical for B5) is stored in addresses 3050 to 305FH, and data for paper size B5R (vertical for B5) is stored in addresses 3060 to 3060 to 304FH. 306
F HVC paper size A5R (A5 vertically placed) data is stored and formed. (here（・'、
Th white) With the configuration shown in Table 3 or above, when the operator presses the size uniformity key 4j' to copy the size uniformity mode, the CP
Among the controls executed by U1, the result of judgment 11 of the unified mode routine L1 shown in FIG. to be displayed.

Next, the CPU 1 inputs the output data of the document size detector 2 as document size data (process 13), and also inputs the output data of the paper size detector 3 as paper size data (process 14), and these processes 13.14 Based on the original size data and paper size data obtained by the above, the magnification variable r-data table is referred to and the corresponding magnification ratio is read out from the ROM 1a (process 15).

For example, if the original size is B4 and the paper size is A3,
CPU 1 specifies address 3001H of ROMI a and reads its storage contents (see Table 2).

The magnification data in this case is (10010000). Yes, the vertical/horizontal check flag of the 7th bit is O and the appropriate magnification flag of the 8th bit is 0, so judgment 16 is made.
The result of is N, and the result of judgment 17 is N,
The CPU 1 outputs the variable magnification data (1001) 2 to the optical system control unit 5 and sets the variable magnification to X 1.154 times (processing 18).

Thereafter, the control of the CPU 1 shifts to the next process (eg, starting process of the optical system, process of igniting each electrode, etc.).

Also, if the original size is A4 and the paper size is A3, C
PU 1 specifies address 3002H of ROMI & and reads data. In this case, the double jump data is (000
10010) 2 is true, the vertical/horizontal check flag of the 7th pit is 1, so the result of judgment 16 is Y, 9, C
The PUI executes process 19 and displays a predetermined message (for example, "Please check the direction") on the direction confirmation display 4c to call the operator's attention.

If the document size is B5R (B5 portrait) and the paper size is A3, CPU 1 is at address 30 of ROMI a.
Specify 07H and read the magnification data.

In this case, the magnification data is (11010001)2, and the appropriate magnification check flag in the 8th bit is 1, so the result of judgment 17 is Y, and the CPU executes process 20 and displays a predetermined message ( For example, "Please check the paper size.")'f: Displays to call the operator's attention.

In addition, the size confirmation display 4b and the direction confirmation surface water type 4c
The display is 1. ,,h Mi12 (, -) The message may be a light emitting display of the light emitting element inside.

In that case, it is necessary to write a character string such as 1 one-way confirmation J or "-size confirmation" on the display section of the operation display section 4 so that you can see which table 7. There is.

It's a trench.As shown in Figure 7, the result of judgment 16.17 is -
When it is Y, process 19 and 20 are executed YT L-
, to alert the operator, and at the same time execute process 21.22 to display a copy prohibition display.
It is also possible to avoid copying at extremely high or low magnifications.

As a matter of course, the CPU 1 is also provided with operation keys such as a normal copy key, numeric keypad, clear key, etc., and a display such as a numeric display.

In addition, the document size detection section and the paper size detection section are not limited to those described above, and may be other conventionally used I/)
You can change it to anything you want.

In the above embodiment, address: 3 (100H 306
Although only 112 bytes of FH are used, for example, if the copying machine can also use paper of other sizes than those mentioned above, the size After 3070H, record (7)-f in response:
a Use the remaining storage area in server t-1.

Effect] As described above, according to the present invention, when making all copies in the one-size mode, it is possible to correct copies that are too large or too small. “Still, the storage means and [-1(, OM f/C are variable power]
, '14, Flag data indicating whether the magnification is old or illuminating and whether the direction is appropriate or not is also stored, so read out the magnification data and set all the standard data and the data here. 17 without requiring judgment processing such as comparison.
Therefore, A1 that the processing fr-J-gram can be simplified
” All points are 1.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention. Figure 2 is a schematic diagram showing an example of the document size detection section, Figure 3 is a partial diagram illustrating the paper size detection section, and Figure 4 is a diagram of the operation display section. Partial diagram shown in main part,
FIG. 5 shows a memory map of the ROM 1a, and FIG. 6 shows an example of the size uniformity mode routine] o-chart,
FIG. 7 is a flowchart showing another example of the size unification mote routine. 1... CPIJ, la... ROM, 2... Original size detection section, 3... Paper size detection section, 4... Operation display section. Fig. 7 Fig. 2<C Fig. 6 Friend's processing N Heavy nnnni 4) Processing r・,

Claims (1)

[Claims] A paper size detection means for detecting the size of copying paper; a document size detection means for detecting the size of the original; and a selection means for selecting a size uniform mode for copying an original of size f onto copy paper of the same size. and a variable magnification mechanism for changing the copy magnification, and control for setting the magnification of the variable magnification mechanism based on the outputs of the paper size detection means, original size detection means, and selection means, and controlling a predetermined copying process of 70 processes. In a copying machine equipped with a means for checking whether or not the magnification ratio is appropriate, corresponding to each combination of the size and orientation of the original and copy paper, the appropriate magnification check flag and the original are placed. It further includes a storage means in which a direction check flag for checking whether the orientation is inappropriate or old is stored in advance, and when the size uniformity mode is selected, the appropriate magnification check, cross lag, and direction check are read out from the storage means. Add 2 rods to the contents of the flag - C
Reizii (a copying machine that is customary to display an I confirmation display and a direction confirmation display.