JPH01172865A - Image forming device - Google Patents

Abstract

PURPOSE:To form a fixed-format sheet image by digital image processing by storing a fixed-format sheet original corresponding to the fixed-format sheet in an external storage means as digital image data and enabling it to be read at all times. CONSTITUTION:This device is provided with an image plotting means which plots an image on a photosensitive body by projecting a light beam on an optional position on the photosensitive body, an image input means which inputs the fixed-format original, the external storage means which stores the fixed- format sheet original image data inputted from the image input means previously, and a plotting control means which controls the light beam irradiation from the image plotting means to a prescribed position on the photosensitive body according to the fixed format image data read out of the external storage means. Namely, the plotting control means controls the driving of the plotting means which projects the light beam to form the fixed format image on the photosensitive body. Consequently, the desired fixed-format sheet is reproduced by digital image data processing.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an image forming apparatus that forms a fixed format image on recording paper based on fixed format image data stored in a predetermined external storage means. .

[Conventional technology]

Conventionally, this type of image forming apparatus has been equipped with a recording paper reversing mechanism and has been capable of forming images on both sides of the recording paper by reversing or not reversing the recording paper in accordance with instructions from an operation unit. Alternatively, analog image forming apparatuses that can form multiple images on one side, that is, optically scan a document, have been commercialized.

This allows you to create pre-created fixed format image sheets (specific logos and tables (consisting of vertical and horizontal ruled lines)).
) can now be scanned to form a fixed format image on one or both sides of the recording paper. Then, by multiple-transferring the desired original onto the standard format using the recording paper reversing mechanism described above, it has become possible to easily form a form overlay image between the standard format and the original image.

[Problem that the invention seeks to solve]

However, when using a standard format image sheet to form a standard format on recording paper as described above, it is necessary to prepare two standard format sheets and the corresponding manuscript before obtaining the final image. It is necessary to perform multiple exposure scans of the original document, which greatly complicates the operability.

In addition, the same standard format sheet must be scanned every time the original is needed, and the standard format sheet may fold depending on the frequency of use.

There are management problems such as inducing stains such as discoloration, increasing the risk of not being able to form optimal standard format document sheets, and making management of standard format sheets troublesome.

This invention has been made to solve the above problems, and by storing a standard format sheet original corresponding to a standard format sheet in an external storage means as digital image data and making it possible to read it at any time, An object of the present invention is to obtain an image forming apparatus that can form a format sheet image by digital image processing.

[Means for solving problems]

The image forming apparatus according to the present invention includes an image drawing means for writing or erasing an image on the photoreceptor by irradiating a light beam onto an arbitrary position on the photoreceptor, and an image input means for inputting a standard format document of a standard size. , an external storage means for pre-storing the fixed format original image data input from the image input means, and a fixed format image data of the fixed size read from the external storage means from the image drawing means to a predetermined position on the photoreceptor. A drawing control means for controlling the light beam irradiation is provided.

(Function) In this invention, when the fixed format image data of a fixed size is inputted from the image input means and read out from the external storage means, the drawing control means controls the drive of the drawing means for irradiating the light beam to the read fixed format image data. Control is performed based on format image data to form a regular format image on the photoreceptor.

〔Example〕

FIG. 1 is a sectional view illustrating an example of an image forming apparatus according to an embodiment of the present invention, which is roughly divided into a main body part A, a pedestal part B, an editor part C, an IC card unit part, and a management unit part E1. It is composed of an input section F and the like.

It should be noted that each part B to F is configured to be selectively connectable to the main body part A.

In the main body part A, 1 is a system controller (sequence controller) which also serves as the drawing control means of the present invention, and includes a CPU, ROM, and RAM which serve as controllers for controlling the above-mentioned parts A to F.

It is composed of an interface and the like, and also serves as the drawing control means of the present invention.

Reference numeral 2 denotes an original table glass, on which an original is placed flat.

Reference numeral 3 denotes an irradiation lamp (exposure lamp) that exposes the original placed on the original platen glass 2. 4 to 6 are reflective mirrors for scanning (scanning mirrors), which change the optical path of the reflected light of the document exposed by the irradiation lamp 3. Incidentally, the irradiation lamp 3 and the reflection mirror 4 constitute a scanning unit that moves together with the document scanning.

A lens 7 adjusts the optical path length and focus of the reflected light scanned by the scanning mirror 6. Note that the lens 7 is positioned at a position corresponding to the magnification between the dotted line positions in the figure in accordance with a magnification specified by an operation unit to be described later.

Reference numeral 8 denotes a reflecting mirror (scanning mirror) that reflects light reflected from the original projected through the lens 7 onto the photoreceptor 17 . Reference numeral 9 denotes an optical system motor that changes the speed of the scanning unit according to the magnification, and causes the scanning unit to move and scan at a constant speed corresponding to the magnification. A sensor 1o detects the movement state of the scanning unit and notifies the sequence controller 1 of the movement state. 13 is a semiconductor laser which is 0N10FF modulated based on fixed format image data read from an IC card (described later) which is inserted into the IC card unit section by the system controller 1 and constitutes an external storage means of the present invention; It is deflected by a polygon mirror 14 rotated at a constant speed by a scanner motor 15, and a regular format image is formed on a photoreceptor 17 by a reflecting mirror (scanning mirror) 16. Note that 13 to 16 described above constitute a laser unit serving as an image drawing means of the present invention.

A main motor 18 rotates the photoreceptor 17 at a constant speed (in the direction of the arrow). A high voltage unit 19 charges the photoreceptor 17 to a latent image forming level potential. A developing unit 2o develops a document image and a regular format image formed on the photoreceptor 17 using developer material (toner) supplied from a toner hopper.

Reference numeral 21 denotes a transfer charger that transfers the toner image developed on the photoreceptor 17 onto the recording paper being conveyed. 22 is a 1 mIf electric device that separates the recording paper after the transfer process from the photoreceptor 17. A cleaner device 23 collects toner remaining on the photoreceptor 17.

Reference numeral 24a designates an upper cassette from which recording paper is fed to the main body A by driving a paper feed roller 25. Reference numeral 24b denotes a lower cassette from which recording paper is fed to the main body A by driving a paper feed roller 26. A registration roller 27 aligns the leading edge of the image formed on the photoreceptor 17 with the leading edge of the fed recording paper, and feeds the stopped recording paper to the main body A at a predetermined timing. A conveyance belt 28 conveys the recording paper that has undergone the transfer process to a fixing device 29. The fixing device 29 fixes the conveyed recording paper by thermocompression bonding.

First, the operation of the main body section A will be explained.

The surface of the photoreceptor 17 is composed of a seamless photoreceptor using a photoconductor layer and a conductor, and is rotatably supported by a main motor 18 that is activated in response to pressing of a copy start key, which will be described later. It starts rotating at a constant speed in the direction of the arrow in the figure. Next, when the predetermined rotational control and potential control processing (preprocessing) of the photoreceptor 17 is completed, the original placed on the original platen glass 2 is scanned by a scanning unit consisting of an irradiation lamp 3 integrated with a scanning mirror 4. The reflected light from the original is sent to scanning mirrors 4-6. The image is formed on a photoreceptor 17 via a lens 7 and a scanning mirror 8.

The photoreceptor 17 is corona-charged by the high-voltage unit 19, and then an image (original image) irradiated by the irradiation lamp 3 is exposed to slit light, and an electrostatic latent is formed on the photoreceptor 17 by a known NP method (electrophotographic process). An image is formed.

Next, the electrostatic latent image on the photosensitive drum 17 is developed by the developing roller 20a of the developing unit 20 and visualized as a toner image, and the toner image is transferred to recording paper by the transfer charger 21 as described later. That is, the transfer paper in the upper cassette 24a or the lower cassette 24b is
The recording paper is fed into the main unit by the paper feed roller 25 or 26, and is conveyed toward the photoreceptor 17 with accurate timing by the registration roller 27, so that the leading edge of the latent image and the leading edge of the recording paper are aligned. Thereafter, the recording paper passes between the transfer charger 21 and the photoreceptor 17, so that the toner image on the photoreceptor 17 is transferred onto the recording paper. After this transfer process is completed, the recording paper is separated from the photoreceptor 17 by a separation charger 22, guided to a fixing device 29 by a conveyance belt 28, and then discharged to the outside of the main body A by a discharge roller 44.

After the transfer, the photoreceptor 17 continues its post-rotation, and the surface thereof is cleaned by a cleaner device 23 composed of a cleaning roller and an elastic blade, and residual toner is collected.

In the bedside section B, 31 is a vapor deck that accommodates, for example, about 2000 sheets of recording paper. Reference numeral 32 is an intermediate tray that temporarily holds the recording paper so that the side of the recording paper on which image formation has been completed is the top side during double-sided copying, and so that the side of the recording paper on which image formation has been completed is the bottom side during multiple copying. Place it. Reference numeral 33 denotes a lifter, which gradually lifts up according to the amount of recording paper stored in the vapor deck 31 so that the uppermost recording paper comes into contact with the paper feed roller 34 .

35 is a paper ejection flapper (direction flapper), and the feed roller 3
0 to switch the path between the paper conveyance path on the double-sided recording side or the multi-recording side and the ejection conveyance path of the recording paper that is repulsed through the paper. 3
6.37 is a conveyance path through which the recording paper is conveyed when the paper conveyance path on the double-sided recording side or the multi-recording side is selected. Reference numeral 38 denotes an intermediate tray weight, and by driving this intermediate tray weight 38, the paper ejection flapper 35 and the conveyance path 36 are
．． The recording paper that has passed through the tray 37 is reversed and stored in the intermediate tray 32.

Reference numeral 39 denotes a multiplex flapper, which switches the conveyance path between double-sided recording and multiplex recording.
lead to. Reference numeral 41 denotes a multiple paper ejection sensor that detects the end of the transfer paper of the recording paper passing through the multiple flapper 39 and notifies the system controller 1 of the detection. 42 is a paper feed roller, and a path 43
The recording paper is fed to the photoreceptor 17 side through. Reference numeral 44 denotes a paper ejection roller that ejects the recording paper on which image formation has been completed from the bed fork section B. Reference numeral 45 denotes a paper discharge tray on which recording paper on which image formation has been completed is placed in a stack.

Next, the operation of the pedestal section B will be explained.

During double-sided recording (double-sided copying) or multiplex recording (multiple overlapping copying), first raise the paper discharge flapper 35 of pedestal section B upward in the figure, and move the recording paper on which image formation has been completed to the conveyance path 36, 37 of pedestal section B. It is stored in the intermediate tray 32 via the. At this time, the multiplex flapper 39 is lowered during double-sided recording, and the multiplex flapper 39 is lifted upward in the figure during multiplex recording. This intermediate tray 32 can store up to 99 sheets of recording paper, for example. The recording paper stored in the intermediate tray 32 is transferred to the intermediate tray weight 38.
is held down by

During the next back-side recording or multiplex recording, the recording sheets stored in the intermediate tray 32 are fed one sheet at a time from the bottom to the paper feed roller 42. Due to the action of the intermediate tray weight 38, it is guided to the registration roller 27 of the main body part A via the path 43.

The editor section C will be explained with reference to FIG.

2 is a plan view illustrating the configuration of the editor section C shown in FIG. 1, in which 51 is a digitizer section;
When using the text add-on and handwriting input, place the original and enter the coordinates. Reference numeral 52 is a reference mark that indicates the position to abut against the edge of the document. Reference numeral 53 denotes a stylus pen, which inputs coordinate information by pressing the digitizer section 51 when inputting an add-on of nine characters for area designation and handwriting. Reference numeral 54 denotes an input information area, in which alphabets, numbers, symbols, 2 date information (January 9, 2017), etc. in the area are instructed and inputted to the system controller 1 using the stylus pen 53. Reference numeral 55 denotes an area mode designation key, and by pressing the area mode designation key 55, an area designation mode is instructed to the system controller 1. Reference numeral 56 denotes a memory key, which is pressed to store an area specified by the stylus pen 53, for example, which is closed by two diagonal points. A mode key 57 specifies whether the area specified with the stylus 53 is to be trimmed or masked. Reference numeral 58 denotes a clear key, which is pressed to instruct cancellation of area designation.By pressing this clear key 58, area information registered in the internal memory of the system controller 1 is cleared. Reference numeral 59 denotes a region designation mode indicator, which lights up when the region mode designation key 55 is pressed to notify the operator of this fact. 6o is the area storage number display,
Each time the stylus pen 53 and memory key 56 are pressed, they light up in sequence, and for example, when area information is stored in three locations, all of them light up. Reference numeral 61 denotes a mode indicator, which is sequentially and cyclically lit each time the mode key 57 is pressed to indicate masking or trimming mode.

Reference numeral 62 denotes an add-on mode key, which is pressed when writing characters on an image, and notifies the system controller 1 of the add-on mode. 63 is a font size key, press this font size key 63 to change the size of the characters to be written,
For example, either 4 mm or 8 mm square is input to the system controller 1. 64 is the direction key,
This direction designation key 64 is pressed to instruct the system controller 1 as to the direction of characters to be written, parallel or perpendicular to the conveying direction of the recording paper. 65 is a character writing position designation key; this character writing position designation key 65
By pressing , an instruction is input to the system controller 1 to start writing characters. Reference numeral 66 denotes an enter key, and by pressing the enter key 66, an instruction is input to the system controller 1 to end writing characters.

67 is a character clear key, and when this character clear key 67 is pressed, an instruction is input to the system controller 1 to clear input character information. A character input display 68 lights up when the add-on mode key 62 is pressed to notify the operator of the character input mode. 6
9 is the font size display, and the font size key 63
When pressed, the font lights up alternately to notify the selected font size. Reference numeral 70 denotes a writing direction indicator, which turns on alternately when the direction designation key 64 is pressed to display the selected writing direction.

Reference numeral 71 denotes a position input end indicator, which lights up when the enter key 66 is pressed to indicate the end of position input. Reference numeral 72 denotes a handwriting input mode key. When the handwriting input mode key 72 is pressed, the display 75 lights up, notifying the operator of the fact, and inputting an instruction to the system controller 1 to that effect. 73 is an enter key to input an instruction to the system controller 1 to end the handwriting input mode. 74 is a handwriting mode clear key, and by pressing this handwriting mode clear key 74, the handwriting mode is cleared.

Next, the configuration of the IC card unit shown in FIG. 1 will be explained with reference to FIGS. 3(a) and 3(b).

3(a) and 3(b) are a perspective view and a cross-sectional view illustrating the structure of the IC card unit shown in FIG. 1. FIG.

In these figures, 81 is a card insertion slot into which an IC card 84 is inserted. Note that the IC card 84 has semiconductor integrated circuits (CPU, RA, etc.) mounted on a base such as a plastic card.
M, ROM), etc. are built-in. In addition, IC card 8
4 (external storage means) contains one or more fixed format sheet images (one line data group consisting of a set of 1 and 0) for forming a fixed format sheet (fixed format sheet images of different fixed sizes), which will be described later. It is input from an image scanner and stored. Also,
The IC card 84 stores a department code that prohibits copying of the stored fixed format sheet image, and when this department code matches the department code stored in the magnetic card described later, the department code is activated. The sequence controller 1 prohibits (suppresses) copying of a fixed format sheet image based on a flowchart described later.

82 is a card ejection button, and the inserted IC card 8
Press when ejecting 4. Reference numeral 83 denotes a display, which lights up when the IC card 84 is inserted and turns off after being ejected. 85
．． 86 is a card position sensor, the card position sensor 85 detects insertion of the IC card 84, and the card position sensor 86
detects the completion of insertion of the IC card-84 and notifies the sequence controller 1 of this fact. 87 is a connector,
It is connected to the main body part A via this connector 87.

Reference numeral 88 denotes a contact, which contacts the port of the IC card 84. 8
Reference numeral 9 denotes a transport motor, which rotates forward to load the IC card 84 when the insertion of the IC card 84 is detected by the card position sensor 85, and stops when the card position sensor 86 detects the IC card 84. Further, when the card eject button 82 is pressed, the IC card 84 is driven in reverse.
is pulled out, and stops when the card position sensor 85 can no longer detect the IC card 84.

Next, the configuration of the management unit section E shown in FIG. 1 will be explained with reference to FIGS. 4(a) to 4(C).

FIGS. 4(a) to 4(C) are a perspective view and a sectional view illustrating the configuration of the management unit E shown in FIG. 1.

and its control block diagram. In these figures, 91 is a card insertion slot into which a magnetic card 94 is inserted. Reference numeral 92 denotes a card ejection button, which is pressed to eject the inserted magnetic card 94. Reference numeral 93 denotes a display which lights up when a magnetic card 94 is inserted and goes out after being ejected. 9
5.96 is a card position detection sensor, the card position detection sensor 95 detects the insertion of the magnetic card 94, the card position detection sensor 96 detects the completion of insertion of the magnetic card 94,
The sequence controller 1 is notified of this fact.

97 is a connector, and the main body A is connected through this connector 97.
connected to. 98 is a magnetic head that reads data 2 (department code) written on the magnetic card 94;
It also writes department data output from the sequence controller 1.

Reference numeral 99 denotes a card transport motor, which rotates forward to load the magnetic card 94 when the insertion of the magnetic card 94 is detected by the card position detection sensor 95, and when the card position detection sensor 96 detects the magnetic card 94. Stop in case. Further, when the card ejection button 92 is pressed, the magnetic card 94 is driven in the reverse direction and pulled out, and stops when the card position detection sensor 95 can no longer detect the magnetic card 94. 100 is a control unit, CPtJlooa.

It is composed of a ROM 100b, a RAM 100c, an interface section 100d, 100e, etc., and a CPU 100a.
is the control procedure (
Each part is controlled based on the control program.

The RAM 100c functions as a work memory for the CPU 100a and temporarily stores input data. The interface unit 100d outputs a CPLJlooa control signal to loads such as the card transport motor 991 and display 93, and sends detection signals input from the card position detection sensors 95 and 96 to the CPU 100a. The interface section 100e outputs a write signal to the magnetic head 98, and also outputs the data read by the magnetic head 98 to the CPU 100a.

The CPU 100a determines the data read from the magnetic card 94 inserted into the card insertion slot 91 of the management unit section E via the interface section 100e, and if this data is a department code, the CPU 100a reads the data from the main body section. A copy enable signal is sent to the sequence controller 1 of A to manage the number of copies. In addition, if an upper limit for the number of copies is set, it is determined whether the number exceeds the upper limit, and when the set number of copies is exceeded, a copy prohibition signal is sent to the main unit A.
The data is sent to the sequence controller 1. Further, if the data read from the magnetic card 94 is not a preset department code but code information for reading a function, the CPU 100a performs the processing necessary for that function (details will be described later). )Execute. Further, if the data read from the magnetic card 94 is a preset department code, it is determined whether the department code prohibits copying of the fixed format sheet image stored in the IC card 84. , controls to suppress the copying process of the standard format sheet image stored in the IC card 84 based on a flowchart to be described later.

Next, referring to FIG. 5, the operating section of the main body A shown in FIG. 1 will be explained.

FIG. 5 is a plan view illustrating the operation section of the main body A shown in FIG. Press to enter setting mode such as setting frame eraser size. Reference numeral 112 denotes an all reset key, which is pressed to forcibly set any mode being set to the standard mode (same size, automatic density, automatic paper feed, copy setting copy value (``1 sheet'')). Reference numeral 113 denotes a preheating key, which is pressed when setting the print engine of the main body A to a preheating state and when canceling the preheating state. Note that the preheat key 113 is also pressed when returning from the auto-shutoff state to the standard mode.

114 is a copy start key (copy start key);
Press to start copying operation.

115 is a clear/stop key, which functions as a clear key during standby and as a copy stop key during copy recording. The clear/stop key 115 is also pressed when canceling the number of copies set as the clear function, and also when canceling the asterisk mode. Further, the clear/stop key 115 is pressed to interrupt continuous copying as a stop function, and the copying operation stops after the copying operation at the time of pressing is completed.

Numeric keys 116 are pressed to set the number of copies. It is also used to set asterisk mode. A memory key 117 allows the user to register frequently used modes. 118a, 11
8b is a copy density key, which is pressed when manually adjusting the copy density. 119 is automatic density setting key (AE key)
This button is pressed to automatically adjust the copy density according to the density of the original, and to cancel the automatic density adjustment (AE) and switch the density adjustment to manual.

Reference numeral 120 denotes a cassette selection key, which is pressed to select paper feed from the upper cassette 24a, the lower cassette 24b, and the vapor deck 31. Furthermore, when the cassette selection key 120 is pressed when a document is placed in the editor section C, automatic paper cassette selection (APS) is set and paper of a size matching the document size is stored. The cassette to be played is automatically selected.

Reference numeral 121 is a same size key, which is pressed when making a same size (original size) copy. Reference numeral 122 denotes an auto-magnification key, which is pressed when automatically reducing or enlarging the original image according to the specified transfer paper size.

Reference numerals 123 and 124 are zoom keys, which are pressed to specify an arbitrary copying magnification between 64% and 142% for the original. Reference numerals 125 and 126 are fixed size scaling keys, which are pressed when specifying reduction or enlargement of the fixed size. Reference numeral 127 denotes a double-sided key, which is pressed to perform double-sided copying from a single-sided original.1 double-sided copying from a double-sided original, or single-sided copying from a double-sided original. A binding margin key 128 is pressed to create a binding margin of a specified length on the left side of the recording paper. 129 is a photo key, which is pressed when copying a photo original. 130
is a multiple key, which is pressed when creating (combining) an image from two originals on the same side of recording paper.

Reference numeral 131 denotes a document frame erase key, which the user presses when erasing the frame of a standard size document.The size of the document at that time is set using the asterisk key 111. Reference numeral 132 denotes a sheet frame erase key, which is pressed to erase the frame of the document according to the cassette size. Reference numeral 133 denotes a page continuous copying key, which is pressed when copying the left and right pages of a document on separate sheets.

140 is an LCD (liquid crystal) type message display (display), for example, 1 with 5 x 7 dots.
It can compose characters and display a 40-character message. This display 140 is a transflective liquid crystal display and uses two colors for the backlight.Normally, the green backlight is lit, and the orange backlight is lit when there is an abnormality or when copying is not possible. A magnification display 141 displays the copy magnification set by the zoom keys 123 and 124 in %. Reference numeral 142 denotes an equal magnification indicator, which lights up when equal magnification is selected. Reference numeral 143 is a color development indicator, which lights up when a sepia development device is set. A copy number display 144 displays the number of copies or a self-diagnosis code. 145 is a cassette display device, which indicates the upper cassette 24a,
It is displayed whether the lower cassette 24b or the paper deck 31 is selected.

Reference numeral 146 denotes a document direction indicator that displays the direction in which the document is set (vertically or horizontally). Reference numeral 147 denotes an AE indicator, which lights up when AE (automatic density adjustment) is selected using the AE key 119. Reference numeral 148 denotes a preheating indicator, which lights up in the preheating state. In addition, in the auto shut-off state, preheating indicator 1
48 goes out. 149 is a ready/wait indicator,
It is a two-color LED of green and orange, and when ready (
When copying is possible), the green light is lit, and when there is a wait (copying is not possible), the orange light is lit.

Reference numeral 150 denotes a double-sided copy indicator, which lights up when either double-sided copying from a double-sided original or double-sided copying from a single-sided original is selected.

In addition, in standard mode, the number of copies is 1, density AE mode, -
Auto paper selection 9 Same size 9 Single-sided original to single-sided copy setting.

Next, the configuration of the system controller 1 shown in FIG. 1 will be explained with reference to FIG. 6.

FIG. 6 is a block diagram showing the configuration of the system controller 1 shown in FIG. 1, and the same parts as in each of the figures from FIGS. 1 to 5 are given the same reference numerals.

In this figure, 1a is a CPU, for example μC0M87
AD (manufactured by NEC Corporation), ROM1b
Each part is comprehensively controlled based on a control program stored in the controller. 1C is a RAM serving as a main memory device, which functions as a storage area for input data and a working memory area. 1d is an output interface circuit (I10 output), which is composed of an input/output circuit board μPD8255 (manufactured by NEC Corporation) and the like, and outputs a control signal instructed by the CPU 1a to a load such as the main motor 18. 1e is an input interface circuit (I10 input), which is connected to the input/output circuit board μPD82.
55 (manufactured by NEC Corporation), etc., and sends a detection input signal detected by the image tip sensor 12 etc. to the CPU 1a. 1f is an interface circuit, which is an input/output circuit board μ
It is composed of a PD8255 (manufactured by NEC Corporation) or the like, and controls the input/output of the display group DS and key group of the operation section shown in FIG. The display group DS is a general term for each display shown in Fig. 5, consisting of an LED and an LCD, and the key group corresponds to each key shown in Fig. The state identification is determined by the CPU 1a using a known key matrix.

A laser driver 1g outputs a drive signal for driving the semiconductor laser 13 and the scanner motor 15 based on a drive control signal output from the CPU 1a. Note that 27a is a registration clutch that drives the registration motor 27 shown in FIG. S is a bed sensor, which corresponds to the sensor inside the bed wall portion B.

Next, the image writing/erasing operation by the drawing means according to the present invention will be explained with reference to FIG.

FIG. 7 is a perspective view illustrating the driving operation of the semiconductor laser 13 shown in FIG. 1, and the same parts as in FIGS. 1 and 6 are given the same reference numerals.

In this figure, 151 is a collimator lens that adjusts the laser beam irradiated from the semiconductor laser 13 into parallel light. A cylindrical lens 152 adjusts the optical axis of the laser beam irradiated via the collimator lens 151 so that it becomes parallel to the axial direction of the photoreceptor 17 on the scanning mirror 16 . Reference numeral 153 denotes an imaging lens that adjusts the scanning speed of the laser beam deflected by the polygon mirror 14 on the photoreceptor 17 to a constant value.

The CPU 1a takes in the fixed format sheet image data stored in advance in the memory section of the IC card 84 inserted into the IC card unit section into the RAM 1c, and outputs the video signal VD corresponding to the fixed format sheet image data to the laser driver 1g. . In response to this,
A laser drive signal LD for driving the semiconductor laser 13 is sent out from the laser driver 1g, and this laser drive signal LD
A laser beam biased on/off is oscillated by the semiconductor laser 13. The oscillated laser beam is converted into parallel light by a collimator lens 151, and converted into a straight line parallel to the drum axis on the scanning mirror 16 by a cylindrical lens 152. Furthermore, the laser beam deflected by the polygon mirror 14 rotating at a constant speed is transmitted to the photoreceptor 17 via the imaging lens 153.
forming an electrostatic latent image thereon.

In this way, the video signal VD output from the CPU 1a
control, the electrostatic latent image can be placed at any position on the photoreceptor 17 with high precision, in this example, 4pe 1 (4 dots/mm).
Therefore, the standard format sheet image developed in the RAM IC can be accurately reproduced on recording paper when necessary.

Next, the operation of reading a fixed format sheet image from the IC cart 84 will be explained.

The IC card 84 stores image data constituting a fixed format sheet consisting of tables, logos, etc.
When the IC card 84 is inserted into the card insertion slot 81 of the C card unit, the stored standard format sheet image data is read out for each scanning line through the contacts 88 and stored on the RAMIC of the sequence controller 1. Be expanded.

Next, the fixed format image forming processing operation according to the present invention will be explained with reference to FIG.

FIG. 8 is a flowchart illustrating a procedure for forming a fixed format image according to the present invention.

Note that (1) to (lO) indicate each step.

The dot information corresponding to the first scanning line is read from the IC card 84, expanded to the RAM 1c, and the value of the address counter is set to the first address (1). Next, vertical synchronization (synchronization of the paper feeding direction of the recording paper) is performed using (vertical synchronization O).
Wait for K) and 2), if OK, then horizontal synchronization (
Waits for synchronization (scanning direction synchronization) to be established (horizontal synchronization OK) (3).

Next, the content of the address indicated by the address counter is "1".
(black dot) 4), if YES, turn off the video signal VD from CPola 5),
Step (7) by forming a black electrostatic latent image on the photoreceptor 17
Proceed to the following steps, and if No, the video signal V from the CPU 1a
Turn on D 6) to form a white electrostatic latent image on the photoreceptor 17.

Next, the address counter (not shown) is incremented (7), and it is determined whether one scanning line is completed (8). If NO, the process returns to step (3); if YES, the next scanning line is read from the IC card 84. R dot information
The data is expanded to AM1c, and the value of the address counter is set to the first address of the scanning line (9). Next, it is determined whether or not the vertical scanning is completed (10). If No, the process returns to step (2), and if YES, the process ends. Thereafter, under the control of cPUla, it becomes possible to form an image on a regular format sheet, and image formation is performed according to a known electrophotographic process.

Next, the configuration of the image input section F shown in FIG. 1 will be explained with reference to FIGS. 9(a) and 9(b).

FIGS. 9(a) and 9(b) show the image input section F shown in FIG.
1 is an external perspective view and an internal structure diagram illustrating the configuration of an image scanner showing an example.

In these figures, reference numeral 200 denotes an original table glass, on which a standard format sheet original (not shown) is placed at a predetermined position and pressed against an original pressing plate 200a. A scan start switch 201 notifies the CPU 1a of the system controller 1 to start scanning a standard format sheet original on the original table glass 200. Reference numeral 202 denotes an illumination lamp that exposes the standard format sheet original placed on the original table glass 20o. Scanning mirrors 203 to 205 scan reflected light from the original onto an imaging lens 206. Reference numeral 207 denotes an image pickup device composed of, for example, a CCD, which converts the original image formed by the imaging lens 206 into an electric signal (analog image signal).

208 is an A/D converter that converts the electrical signal output from the image sensor 207 into a digital signal and outputs it to the CPU 1a.

When the scan start switch 201 is pressed, the optical scanning unit that is integrated with the illumination lamp 202 and the scanning mirror 203 starts exposing the document, and the scanning mirror 20
3 to 205, the light is guided to an imaging lens 206 while the optical path is sequentially changed, and the reflected light is imaged by the imaging lens 206 on an image sensor 207. The charges accumulated in the light receiving section in the CCD constituting the image sensor 207 are converted into analog voltage signals in order from the end to the A/D converter 2 at the subsequent stage.
It is output on 08. The A/D converter 208 is the image sensor 2
The analog electrical signals of each pixel sequentially sent from 07 are converted into digital signals according to the density, and are output to the CPU 1a of the sequence controller 1. The CPU 1a sends the sent digital signal directly or to the RAM.
1c and in synchronization with a write clock signal (not shown), the data is sequentially written into the IC card 84 inserted into the IC card unit section. Note that the IC card 84 can store a plurality of standard format sheet originals input from an image scanner.

FIG. 10 shows the sequence controller 1 shown in FIG.
3 is a flowchart illustrating a fixed format sheet image selection processing procedure according to the present invention. Note that (1) to (12) indicate each step.

First, wait for the asterisk key 111 to be pressed (1), and when the asterisk key 111 is pressed, the fixed format sheet image selection mode is entered, and the numeric keypad 11 is pressed.
2), and when the numeric keypad 116 is pressed, the fixed format sheet image (multiple stored in the IC card 84) instructed by the numeric keypad 116 is displayed on the display 140 shown in FIG. Display the title.

Next, it is determined whether the zoom key 123, that is, zoom enlargement has been requested (3), and if YES, the title of the fixed format sheet image in the rear row registered in the IC card 84 is displayed on the display 140 (4).

Next, it is determined whether the asterisk key 111 has been pressed (5), and if YES, the selected fixed format sheet image is developed in the RAM 100c (6), and the process is terminated.

On the other hand, if the determination in step (5) is No, the address of the fixed format sheet image area stored in the IC card 84 is moved backward (7), and the title of the backward fixed format sheet image is displayed on the display 140. 8) and return to step (5).

On the other hand, if the judgment in step (3) is NO, the title of the standard format sheet image in the front row is displayed on Display 1.
40 (9). □Next, press the asterisk key 1
It is determined whether or not 11 was pressed (10), and if YES, the process returns to step (6), and if No, the IC card 84 is pressed.
The address of the fixed format sheet image area stored in is advanced (11), the title of the advanced fixed format sheet image is displayed on the display 140 (12), and the process returns to step (IO).

After this, a regular format sheet image is formed according to the procedure described above. In this way, the IC card 84
By storing a plurality of fixed format sheet images in , it is possible to select and create a desired fixed format sheet using a single IC card 84.

Next, with reference to FIG. 11, a description will be given of the standard format sheet image copy inhibition control operation by the sequence controller 1 shown in FIG. 1.

FIG. 11 shows the sequence controller 1 shown in FIG.
3 is a flowchart illustrating a standard format sheet image copying prevention control procedure according to the present invention.

Note that (1) to (7) indicate each step.

First, wait for the asterisk key 111 to be pressed (1), and when the asterisk key 111 is pressed, the fixed format sheet image selection mode is entered, and the numeric keypad 116 is pressed.
2) When the numeric keypad 116 is pressed, the magnetic card 9 inserted into the management unit section E is pressed.
3) Read the pre-written department code from 4 and write it to the work area of RAM100C.

Next, wait for the prohibited department code that prohibits copying of the selected standard format sheet image to be read out from the IC card 84 (4). 5), and if YES, the process ends without executing the RAM expansion process of the selected fixed format sheet image.

On the other hand, if the determination in step (5) is NO, the title of the selected standard format sheet image is displayed on the display 140 (6), and the standard format sheet image is expanded to the RAM 1c of the sequence controller 1 (7).
), the process ends.

This makes it possible to restrict copying of standard format sheet images in a specific department, and prevent erroneous standard format sheet creation processing.

In the above embodiment, the laser unit constitutes the drawing means according to the present invention, and a case has been described in which a fixed format sheet image 1 data stored in the IC card 84 is drawn on the photoreceptor 17. However, a known LED blank may be used. The drawing means may also be composed of a liquid crystal shutter or a liquid crystal shutter.

Further, in the above embodiment, the IC card 8 is used as an external storage means.
4 is configured, but the memory card,
Lii! Similar effects can be obtained by using a storage medium such as a storage device or a laser card.

Furthermore, in the above embodiment, the fixed format sheet image data stored in the IC card 84 is developed in the RAM 1c for each scanning line. It is also possible to control the fixed format data to be directly transferred from the card 84 to the laser driver 1g.

In addition, in the above embodiment, the fixed format sheet image is
Although the case where processing is performed as dot information has been described, character information may also be used.

Further, in the above embodiment, a case has been described in which a standard format sheet manuscript is inputted from an image scanner and registered in the IC card 84, but the image input section F may be built into the main body section A, or the document creation device ( Fixed format sheet data created by a word processor) may be registered in the IC card 84.

〔Effect of the invention〕

As described above, the present invention includes: an image drawing means for writing and erasing an image on the photoreceptor by irradiating a light beam onto an arbitrary position on the photoreceptor; an image input means for inputting a standard format document of a standard size; an external storage means for pre-storing the fixed format image data of a fixed size inputted from the image input means; and a predetermined position of the photoreceptor from the image drawing means based on the fixed format image data of the fixed size read from the external storage means. Since a drawing control means for controlling light beam irradiation to the image data is provided, a conventional fixed-format original sheet can be registered as digital image data, and the desired image can be created by digital image data processing without relying on optical original scanning. It has the excellent advantage of being able to reproduce fixed format sheets with high quality at any time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view illustrating an example of an image forming apparatus showing an embodiment of the present invention, FIG. 2 is a plan view illustrating the configuration of the editor section shown in FIG. 1, and FIG. 3(a) ,(b) is
FIG. 4(a) is a perspective view and sectional view illustrating the configuration of the IC card unit shown in FIG. 1, and FIG. (
b) is a sectional view illustrating the configuration of the management unit section shown in FIG. 1, FIG. 4(C) is a control block diagram illustrating the configuration of the management unit section shown in FIG. 1, and FIG. is the first
6 is a block diagram showing the configuration of the system controller shown in FIG. 1, and FIG. 7 is a plan view illustrating the operation section of the main body shown in FIG. FIG. 8 is a flowchart explaining the procedure for forming a fixed format image according to the present invention; FIGS. 9(a) and 9(b) show an example of the image input section shown in FIG. 1. FIG. 10 is a flowchart illustrating the standard format sheet image selection processing procedure by the sequence controller shown in FIG. 1, and FIG. 3 is a flowchart illustrating a procedure for controlling copying of a fixed format sheet image by the illustrated sequence controller. In the figure, 1 is the system controller, 1a is the CPU, 1b
is ROM, 1c is RAM, Ig is laser driver, 1
3 is a semiconductor laser, 84 is an IC card, A is a main body, B
C is an editor section, D is an IC card unit section, E is a management unit section, and F is an image input section. Figure 3 (a) (b) 8Z89 87 Figure 4 (a) Figure 4 (C)] Due Figure 7a Figure 9 (a) 200a Anti (b) Figure 10

Claims (7)

[Claims] (1) In an image forming apparatus that scans an original image to form an image on a photoreceptor, an image drawing unit that writes or erases an image on the photoreceptor by irradiating a light beam onto an arbitrary position of the photoreceptor; , an image input means for inputting a standard format original of a standard size, an external storage means for storing in advance the standard format original image data inputted from the image input means, and a standard format of the standard size read from the external storage means. An image forming apparatus comprising: a drawing control means for controlling irradiation of a light beam from the image drawing means to a predetermined position on the photoreceptor based on image data. (2) The image forming apparatus according to claim (1), wherein the external storage means is constituted by a semiconductor storage medium. (3) The image forming apparatus according to claim (1), wherein the external storage means is constituted by an IC card having a built-in controller that controls reading of fixed format image data of a fixed size. (4) The image forming apparatus according to claim (1), wherein the external storage means stores a plurality of fixed format image data of a fixed size. (5) The image forming apparatus according to claim (1), wherein the external storage means stores a plurality of fixed format image data of different sizes. (6) The drawing control means selects and reads out one instructed fixed format image data from the external storage means from among the plurality of fixed format image data. image forming device. (7) The drawing control means compares the selected fixed format image data with department information stored in advance, and suppresses reading of the fixed format image data from the external storage means. 1st (1st
).