JPH09331415A - Image processor with recording position adjustment function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a print position based thereon by outputting a pattern image for confirming recording position of an image of recording paper of a basic size, measuring left and right margin in measures and registering them. SOLUTION: A facsimile equipment is provided with a scanner 3, a plotter 4, a page memory 5, an image information memory 8, a coding decoding section 9, and an operation display section 10, and a control section 1 stores data for a pattern for a recording position confirmation of an image on recording paper to a system memory 2, and outputs an image subjected to magnification corresponding to a recording paper size to the plotter 4 according to a command by keys of the operation display section 10. The user measures margin measures from both left right recording paper ridge as to the pattern image for the position confirmation outputted on recording paper of, e.g. A4 size and enters it as position error information according to a guidance displayed on the operation display section 10 in the 'recording position error setting mode'. The system memory 2 stores it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus such as a facsimile apparatus, a copier, a printer, or a multifunction terminal such as a multifunction facsimile / copy apparatus for performing recording using plain paper of a fixed size. More particularly, the present invention relates to an image processing apparatus capable of adjusting a recording position during printing so as to obtain a high-quality image adjusted to a center position.

[0002]

2. Description of the Related Art In a facsimile apparatus using regular-size plain paper, the recording position of an image does not always coincide with a desired recording range due to an error in a cassette, a transport mechanism, or the like, and may vary. That is, it is difficult to fit and record the image so that the image recording position is within a predetermined range. As a conventional method for solving such inconvenience, for example, in a process inspection after assembling, a test pattern image for checking a recording density or the like or a predetermined original is copied to correct a recording position. . There is also known a device that reduces the test process by comparing the image pattern transmitted by facsimile communication with the image pattern generated by the similar signal generating circuit and simultaneously testing the two functions of the facsimile control board. (For example, Japanese Patent Laid-Open No. 2-3266)
No. 8). However, a specific method of detecting an error in a paper feed cassette or the like and adjusting the deviation of the recording position has not been put to practical use.

[0003]

An image processing apparatus such as a facsimile apparatus, a copier, a printer, or a multi-function terminal such as a facsimile / copy composite apparatus using a paper feed cassette or the like in which standard size plain paper is stored. In, the recording position (printing position) of an image is adjusted using various tools and originals at the time of manufacture, inspection, and the like. However, even if the angle position is adjusted, if the position actually reaches the user, the position is shifted due to vibration or the like generated in a process such as packing or transportation.
Also, in the case of optional parts such as multi-stage paper feeding, since the adjustment is such that it is evaluated according to the main body of the specific device, there is a tolerance when actually combined with the user's device at the installation location of the user. Occurrence is unavoidable. SUMMARY OF THE INVENTION It is an object of the present invention to enable a user to accurately adjust the position at the time of printing by simply adding a simple means, to enable printing at the center position of a recording paper, and to eliminate the misalignment of printing. I am trying.

[0004]

According to a first aspect of the present invention, an operation control means for outputting a pattern for confirming a recording position of an image corresponding to a recording paper size, and a pattern when the control is executed by the operation control means Format creation means for formatting so as to be printed inside fixed-size recording paper, image expansion means for expanding the pattern as an output image on the page memory, and printing for printing the image of the expanded pattern by the recording unit of the machine. An image processing apparatus comprising a control means and performing recording using plain paper, and an error information input means for inputting error information of a recording position obtained from a measurement result of an output recording pattern confirmation pattern image, Error information storage means for storing the error information of the recording position and error information confirmation means for confirming the error information of the recording position.

According to a second aspect of the invention, in the image processing apparatus of the first aspect, error information adding means for adding the error information of the recording position to a service report or the like is provided.

According to a third aspect of the present invention, in the image processing apparatus according to the first or second aspect, an error information reading unit that reads error information of a recording position and a photosensitive member that uses the read error information as a correction value when printing is performed. The writing position adjusting means for adjusting the writing position on the body is provided.

According to a fourth aspect of the present invention, in the image processing apparatus according to the first or second aspect, the error information reading means for reading the error information of the recording position and the error information of the recording position read at the time of printing are corrected. As a value, there is provided an expansion position adjusting means for adjusting the expansion position on the page memory.

According to a fifth aspect of the present invention, in the image processing apparatus according to the first aspect, the error information of the recording position obtained by the measurement result of the output pattern image for checking the recording position is input for each cassette. Input means, pattern error information storage means for registering and storing error information of recording position for each cassette, recording paper cassette selecting means for selecting a recording paper cassette of an optimum size at the time of printing, and selected cassette An error information reading unit that reads error information of a recording position in units, and a position adjustment that adjusts the writing position on the photoconductor or the expansion position on the page memory using the read error information of the recording position as a correction value at the time of printing. And means are provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an image processing apparatus according to the present invention will be described in detail with reference to the drawings. The present invention relates to a communication terminal having an image recording function, such as a multi-function terminal such as a facsimile machine, a copier, a printer, or a facsimile / copy multifunction machine, which uses a paper feed cassette or the like for storing regular-sized plain paper. The device is a device and can be implemented in all of these image processing devices, communication terminal devices having an image recording function, and the like, and includes all of them. Hereinafter, description will be made mainly on a facsimile device. First, the configuration and operation of the facsimile machine will be outlined.

FIG. 1 is a functional block diagram showing an example of an embodiment of the main configuration of the image processing apparatus of the present invention. In the figure, 1 is a system control unit, 2 is a system memory, 3 is a scanner (reading unit), 4 is a plotter (recording unit), 5 is a page memory, 6 is a network control unit, 7
Is a G3 FAX modem, 8 is an image information memory, 9 is an encoding / decoding unit, 10 is an operation display unit, and 11 is a system bus.

The facsimile apparatus shown in FIG. 1 is basically the same as the conventional one except that the system control unit 1 controls recording position adjustment (correction) according to the flow shown in FIGS. It has the same configuration as the device. First, the configuration and operation common to the conventional one will be briefly described. As described above, the system control unit 1 has a function of controlling the entire facsimile apparatus shown in FIG. 1. In addition to performing the same control as the conventional apparatus, the system control section 1 is unique to the present invention described later. It has a control function. The system control unit 1 has a built-in ROM in which software for controlling the facsimile machine is recorded, and performs all controls according to instructions of a program stored in the ROM.

The system memory 2 is a memory used by the system control unit 1 to store data and the like necessary for executing a program and to be used as a work area. It is also used to store parameters necessary for system control and registration data obtained by user operations. Further, a file for managing the image information stored in the image information memory 9 is also stored in the system memory 2. Then, the data is backed up by a battery (not shown) so that the contents of the memory are not erased even when the power of the apparatus is turned off. Scanner 3
The (reading unit) is composed of a CCD, a contact sensor, etc.
It has a function of reading a document to be transmitted or copied at a predetermined resolution. The plotter (recording unit) 4 records image information read at a predetermined resolution or received image information on recording paper, or outputs and records various management reports.
The page memory 5 is a memory for developing a recorded image in a writing process using a laser or the like, and has a storage capacity for one page of a normally transmitted image. Network control unit 6
Has a function of controlling a connection to a public telephone line network, an ISDN line, or the like, and has an automatic calling function.

The G3 FAX modem 7 is a group 3 facsimile modem and has a function of modulating / demodulating an analog signal. Note that the present invention can be applied to a G4 facsimile apparatus, and in this case, a G4 fax modem is used. The image information memory 8 is a memory unit that stores image information read by the scanner 3 and subjected to image processing, and image information received by communication as necessary. The encoding / decoding unit 9 has a function of compressing image information data to be transmitted by a known encoding method, and decoding the received image information data to reproduce the original image. The operation display unit 10 is a display L provided on the panel.
It is composed of a CD, an LED, operation keys and the like, and has a function of displaying an operation state of the device and an operator performing various operations such as communication operation and registration operation. The above is the outline of the configuration and operation of the image processing apparatus of the present invention in the case of a facsimile apparatus. A pattern for checking the recording position of an image is output, and error information of the recording position obtained by the measurement result is input. The configuration is basically the same as the conventional one, except that the user can confirm the recording position shift as needed. The configuration of the facsimile apparatus shown in FIG. 1 is the same in all the embodiments described below.

First Embodiment The first embodiment mainly corresponds to the invention of claim 1, but is also related to the inventions of claims 2 to 5, and Is the basic invention. 2. Description of the Related Art In an image processing apparatus such as a facsimile apparatus that uses a paper feed cassette or the like that stores plain paper of a fixed size, a positional shift occurs during printing due to an error in the paper feed cassette or a transport mechanism. In the first embodiment, a pattern for confirming the recording position of an image corresponding to the recording paper size is output, and the error information (variation information at the time of printing) of the recording position obtained from the measurement result is held and It is characterized in that the user or the like can confirm the recording position deviation as needed, and can judge the recording position deviation state during printing (variation state during printing). Regarding the specific usage of the error information of the recording position held in this way,
The second embodiment, which will be described later, will be described in detail below.

Since the image processing apparatus of the present invention uses the pattern for confirming the recording position of the image corresponding to the recording paper size, the pattern image for confirming the recording position will be described. Note that calling and using such a pattern by an operation such as a service mode is a well-known technique. For example, in process inspection,
The recording position is corrected by copying a test pattern image for confirming the recording density or the like or a predetermined document.
In the image processing apparatus of the present invention, a pattern for confirming the recording position of an image corresponding to such a recording paper size is stored inside the image processing apparatus, and operation control for performing a scaling process according to the recording paper size is performed. An image of the pattern can be output by the means. When outputting this pattern image, the scaling factor and linear density corresponding to the recording paper size are also specified. In the first embodiment, the positional deviation state of the output pattern image is measured, and the error information of the recording position obtained from the measurement result is used for printing in the "recording position error setting mode". The information is held as variation information so that the recording position deviation can be checked and used as a correction value for the position deviation as needed.

FIG. 2 is a diagram showing an example of a pattern used in image evaluation and the like. In the figure, ΔL indicates the distance of the recording position from the left end, and ΔR indicates the distance of the recording position from the right end.

The pattern as shown in FIG. 2 is conventionally used as a multipurpose pattern for image evaluation in order to confirm the image state of an image when the apparatus is installed or adjusted. In the first embodiment, the pattern data as shown in FIG. 2 is stored inside the image processing apparatus, and the pattern image can be output by the operation control means. When outputting this pattern image, the size and linear density of the recording paper are also specified, but generally, for example, for the basic A4 size,
The pattern data as shown in FIG. 2 is prepared, and a scaling process corresponding to the size of the recording paper is performed to output a pattern image of the specified recording paper size. The linear density is not directly related to the width in the main scanning direction even when the size of the recording paper changes. In the first embodiment, the output pattern image is used for measuring the error in the recording position of the image. Therefore, the distance ΔL of the recording position from the left end and the distance ΔR of the recording position from the right end of the output pattern image.
And measure. Then, the error of the recording position is obtained from the measured distances ΔL and ΔR between the left and right recording positions. The error of the recording position in this case is calculated by the following equation: error = (ΔR−ΔL) / 2.

In the case of a relatively simple model, for example, a model in which only the main body cassette is mounted, or a model in which the main body paper feed adjustment also serves as other paper feed adjustment, the calculated error The value is stored and held in a predetermined area in the system memory 2 of FIG. 1 as error information of the recording position (variation information at the time of printing). In the first embodiment, the user executes the measurement of the output pattern image, the calculation of the error based on the measurement result, and the storage of the error information. The operation of storing the error information is performed, for example, in the “recording position error setting mode”. In order to set this mode, by assigning an appropriate function key among the operation keys of the operation display unit 10 and instructing from the corresponding operation key of the operation display unit 10, the system control unit 1 controls. Will be realized. In the “recording position error setting mode”, a guidance screen as shown in FIG. 3 is displayed on the display unit of the operation display unit 10.

FIG. 3 is a diagram showing an example of a display screen at the time of inputting the set value of the recording position error in the image processing apparatus of the present invention. In the figure, DP1 to DP3 indicate operation screens, and diagonal lines indicate selected items.

When the "recording position error setting mode" is set, a guidance screen (operation screen) indicated by DP1 in FIG. 3 is displayed. In this guidance screen,
The figure shows the case where it is possible to move "+ 0.6mm" to the right. However, when this mode is set, the numerical value (error information) is initialized to "+ 0.0mm", and Also, the numerical value "+0.0 mm" is displayed.
It should be noted that instead of such a numerical value, “−−−−−” or “*
It is also possible to display a message indicating that the setting has not been made, such as “***”. For changing the numerical value, for example, a function is assigned to the "right" key or the "left" key of the scroll so that the value can be changed in units of 0.1 mm. The changeable range is, for example, “+3.0 mm to −3.0 m”.
It is set in advance such as "m". This changeable range is
Since it varies depending on the model, set the optimum value according to the model. Although it is possible to assign numerical values to the numeric keypad, it is necessary to enter the numerical values after the decimal point, so it is necessary to perform a total of four operations including the positive and negative signs. Operability is good. Then, when the desired numerical value is set, use the scroll "Down" key to change the selected item and press the "YES" key to store the error information of the recording position and print the subsequent image. Sometimes, the recording position can be adjusted by the value (error information) (third to fifth embodiments described later).
If the "NO" key is pressed, the set "recording position error setting mode" is canceled.

FIG. 4 is a diagram conceptually showing an example of the storage state of the error information stored in the system memory 2.

FIG. 4 shows the case where a plurality of paper feed cassettes are provided. For example, necessary information such as “error”, “size”, and “presence / absence of cassette” is stored in correspondence with each paper feed cassette, such as main body paper feed and second paper feed. In this way, the error information (numerical value) once set is stored in a predetermined area in the system memory 2. Therefore, when the “recording position error setting mode” is set again, the error information (numerical value) is set in DP1 in FIG. Numerical values (error information) as shown are displayed. Therefore, the error information that has already been set can be easily confirmed.

Although the error information shown in FIG. 4 can be set for each sheet feeding cassette, it is possible to adjust other sheet feeding by adjusting the sheet feeding in the case of a model in which only the body cassette is mounted. In the case of a relatively simple model that doubles as
It is sufficient to store only the set “error information”, and it is not always necessary to use such a table format. That is, it is only necessary to independently store and hold the error information of the recording position. The above is the operation at the time of setting the recording position error (input of error information, storage of error information, confirmation of error information) and the operation of the apparatus according to the invention of claim 1.

The image processing apparatus according to the present invention is characterized in that the held error information of the recording position is utilized, and in the case of a model having a plurality of paper feed stages or a model equipped with an optional paper feed device. With, it is possible to set the error information for each sheet cassette (the invention of claim 5). In this case, it goes without saying that the process of measuring the output pattern image and calculating the error based on the measurement result is performed for each paper feed cassette. The display screen when the error information is set for each paper feed cassette is also shown in FIG. 3, and the storage state of the error information in that case is also shown in FIG. Therefore, in the case of a model with multiple paper feed stages or a model with an optional paper feeding device installed, input operation of the error information and
The storage state of the error information will be described.

When the error information is set for each paper feed cassette, the selection item is changed by using, for example, another function key on the guidance screen (operation screen) shown by DP1 in FIG. Switch to the "Recording position error setting" screen such as DP2. On the DP2 screen, it is possible to select the paper feed cassette or the main body paper feed. If there are a plurality of paper feed cassettes, for example, "Main body paper feed / Second paper feed"
The selection items may be increased, such as “paper feed / third paper feed /.../ nth paper feed”. After selecting the paper feed cassette, the scroll “down” key is pressed to switch to the display of DP3 in FIG. 3, and the error information previously obtained for the selected paper feed cassette is input. The case of FIG. 3 is the case of selecting the simplest paper feed cassette and main body paper feed, and DP2 and D
P3 can be switched by the "down" key and "up" key of the scroll. The above is the operation of inputting error information in the case of a model having a plurality of paper feed stages or a model equipped with an optional paper feed device.

The error information input for each paper feed cassette is stored, for example, as shown in FIG. In FIG. 4, information such as “error”, “size”, and “presence / absence of cassette” set corresponding to each sheet feeding cassette like the main body feeding and the second feeding is stored in a table format. This is the case when they are retained. Regarding the selection of the paper feed cassette at the time of printing, a method of selecting the paper feed cassette of the optimum size according to the printing conditions has been conventionally known. In the present invention, when the paper feed cassette is selected, it corresponds to it. The error information or the like is selected and read.

Second Embodiment The second embodiment corresponds to the invention of claim 2, but is also related to the invention of claim 1. In the first embodiment described above, in order to adjust the deviation of the printing position, a pattern for confirming the recording position of the image corresponding to the recording paper size is output and measured, and the recording position determined by the measurement result is recorded. The case where the error information is held has been described. The second embodiment is characterized in that the error information of the stored recording position can be output as a report as needed, thereby making it easier to check the printing position deviation and adjust the printing position. have.

As described in the first embodiment,
Error information is stored in the system memory 2 of FIG. 1 in the form of a table as shown in FIG. 4 or as independent information. This error information is extremely useful information for the system, not just the user,
For example, when used by a service person for maintenance, work can be performed quickly. Therefore, the error information can be output as a report.

FIG. 5 is a diagram showing an example of a report for outputting the stored error information as a system parameter list. In the figure, 21 is a system parameter list, 22 is a system parameter list 2
The recording correction unit (correction value) recorded in No. 1 is shown.

In creating the system parameter list 21, the title part (system parameter list),
Source name part, ROM Ver. Section, CSI (Called Terminal Identification Information Signal) section, etc. are created in sequence and the recording correction section 22 is created, the system parameter list 21 as shown in FIG. 5 is completed. Here, the recording correction unit 22 creates a character string of the subtitle “recording correction”,
The presence or absence of the cassette shown in FIG. 4 is sequentially determined from the main body sheet feeding, and if there is, the error information corresponding to it is read and replaced with a character string. The input ASC
Information such as the II code and the shift JIS code is replaced by an internal code such as a character generator built in the device. After that, if the character strings are aligned in line units and actual character expansion is performed in line units, a list as shown in FIG. 5 is output, but such processing is well known,
Detailed description is omitted. The above procedure is shown in the flow.

FIG. 6 is a flow chart for creating a system parameter list by adding error information in the image processing apparatus of the present invention. (1) is a flow chart showing the main processing flow, (2) 3 is a flowchart showing a detailed flow of processing when the recording correction unit is created. In the figure, # 1 to # 6 and # 51 to # 59 indicate steps.

In step # 1 of FIG. 6 (1), preparation of the system parameter list 21 shown in FIG. 5 is started.
In the next step # 2, the title part is input. In this case, enter the system parameter list. In step # 3, sender name part, in step # 4, ROM
Ver. Are input sequentially (hereinafter, some steps are omitted). In the final step # 5, the recording correction unit 22 is created, and the creation flow of FIG. 6 (1) ends (step # 6).

The procedure for creating the recording correction section 22 is shown in FIG. 6 (2). Step # 52 of FIG. 6 (2)
Create a subtitle string with. In this case,
Create a character string of "Record correction". Proceeding to step # 53, it is judged whether or not there is error information of the main body paper feeding by referring to the error table of FIG. If there is error information of the main body sheet feeding, the "error information" is read out in the next step # 54, the information is created, and the process proceeds to step # 55.
Also, as a result of the determination in the previous step # 53, when there is no error information of the main body paper feeding, the process proceeds to step # 55. In step # 55, it is determined whether or not there is error information for the second sheet feeding. If there is error information for the second paper feed, the next step # 56.
Then, the "error information" is read, the information is created, and the process proceeds to step # 57. Similarly, the previous step # 5
As a result of the judgment in 7, even when there is no error information of the second sheet feeding,
Go to step # 57.

Here, although illustration of the paper feeding in the middle is omitted, it is determined in step # 57 whether or not there is error information of the nth paper feeding. If there is error information for the n-th sheet feeding, the "error information" is read out in the next step # 58 to create the information. If there is no error information for the n-th sheet feeding, the error information of FIG. ) Ends the flow. By the above procedure, the error information of the recording position is added to the report, for example, the system parameter list 21. Therefore, by outputting such a report, a user, a service person, or the like can accurately and quickly know the variation information at the time of printing (the invention of claim 2).

Third Embodiment This third embodiment corresponds to the invention of claim 3, but is also related to the invention of claim 1 and claim 2. In the first embodiment described above, a case will be described in which a pattern for confirming the recording position of an image corresponding to the recording sheet size is output and measured, and the error information of the recording position obtained from the measurement result is held. did. The third embodiment is characterized in that the writing position on the photoconductor is adjusted at the time of printing using the held error information of the recording position.

FIG. 7 is a perspective view conceptually showing a state in which a latent image is drawn on a photoconductor by a polygon mirror in the image processing apparatus of the present invention. In the figure, 3
1 is a photoreceptor, 32 is a polygon mirror, 33 is an optical writing position, 34 is a developing position, W is a writing width, S is a writing start position, Smax is the largest value among the adjustable positions,
Smin is the smallest value among the adjustable positions, and E is the write end position.

In FIG. 7, the writing start position when the recording paper of a predetermined size is conveyed without error on the surface of the photoconductor 31 is S, and the writing width corresponding to the recording paper of that size is W. It shows with. In this case,
An image is recorded at the center of the recording paper (no deviation occurs in position recording). At the time of printing, as shown in FIG. 7, a latent image is drawn at the optical writing position 32 on the surface of the photoconductor 31 according to the writing width W. Adjustment of the polygon mirror 32
Since it is performed at the time of assembly, it is assumed here that there is no error in the recording position. In the conventional image processing apparatus, after the adjustment of the polygon mirror 32 is completed, the writing start position S of the latent image is fixed by the recording paper width, and the writing width W and the writing end position E are determined from the writing start position S. You. At the time of actual optical writing, a write start position S and a write width W are notified, and control is performed so that pixel data on the page memory 5 is written line by line by DMA or the like. In FIG. 7, the polygon mirror 32 shown by the broken line is in the state of the writing start position S, and the polygon mirror 32 shown by the solid line is in the state of the writing end position E.

In the case of performing optical writing, that is, LD (laser) writing, first, the writing width W is determined by the image width to be printed and the linear density. Next, with respect to the paper feed cassette to be used, the presence or absence of error information of the paper feed cassette is checked by referring to the error information storage means such as the table shown in FIG. In the normal case where it is not stored in the error information table or the like), the normal writing start position S is determined as the writing start position for the paper feed cassette. The writing start position S in this case is such that the recording paper stored in each paper cassette is
This is a start position that is located at the center and determined on the assumption that the paper is supplied from the transport path. However, as described above, if there is a permissible error in the attachment position of the paper cassette, the center of the recording paper stored in the paper cassette is displaced by the permissible error.

Therefore, with respect to such an error, the error information is obtained by the operation as described in the first embodiment and stored in a table or the like. This error information is used as a correction value, and the correction amount S 'of the normal write start position S is determined. That is, when such error information is stored, the error information is read out, the write start position S is corrected to obtain S ', and the corrected write start position S' is determined for the paper cassette. This is the writing start position. Here, the correction amount S 'of the writing start position is Smin≤S'≤Smax. In this case, if S = S ', there is no correction amount (no error set: S' = 0), and if S <S 'or S>S', the previous Smin.ltoreq.S'.ltoreq.Smax. The write start position is corrected within the range. Also, if S '<
When Smin or S '> Smax, S' = Smin, S '
= Smax, the maximum error information is set within a system-settable range. Thus, the write width W
And the write start position S or S 'is determined. The subsequent LD writing operation is the same as that of the related art. One line of the image information of the page memory 5 is read and the LD writing is performed.

In this case, at the writing start position S, the LD writing is performed from the recording position according to the initial setting, and the writing width W (= writing length / line) is fixed at a preset value depending on the size of the paper. This is a value, and the write end position E is automatically determined. The same applies to the corrected write start position S ′, and LD writing is performed over the write width W from the start position S ′. With this operation, when the error information is stored, the writing position of the latent image formed on the photosensitive member 31 is corrected, and the deviation of the recording position caused by the positional deviation of the sheet cassette is corrected. become. It should be noted that the correction amount in this case is normally used in byte units. The above operation is shown in the flow.

FIG. 8 is a flow chart showing the main processing flow at the time of writing the LD on the photoconductor in the image processing apparatus of the present invention. In the figure, # 11-
# 19 indicates a step.

In step # 11 of FIG. 8, LD writing is started, and in step # 12, the write width W is determined.
This writing width W (main scanning direction), that is, the image width W to be printed is constant according to the designated size, and when the line density is different, only the number of dots per unit length is different. The processing in the sub-scanning direction is slightly different depending on the line density. In step # 13, it is determined whether or not the error information is set for the paper cassette to be used. If no error information is set, next step #
In step 14, the write start position S is set, and step # 1
Go to 5. In this case, an initial value corresponding to the image width and the line density to be printed is used.

On the other hand, as a result of the judgment in the previous step # 13, if the error information is set, the process proceeds to step # 18, the error information is read to obtain the correction amount S ', and the write start position is set. Correct S to S '. here,
The correction value S 'is set to Smin≤S'≤Smax. Then, the process proceeds to step # 15 to read one line of information of the print image developed on the page memory 5 and perform LD writing. In step # 16, it is determined whether or not the processing of the next line is necessary. If not necessary (when printing of all lines is completed), the process proceeds to step # 19 and the flow of FIG. 8 is completed.

When the processing for the next line is required, the line pointer of the page memory 5 is incremented by "+1" in step # 17, and the process returns to step # 15. The process of step # 17 is performed when the expanded image corresponding to the linear density is printed without being expanded in the sub-scanning direction at the same size.
LD sub-scanning of 400 × 100 dpi image is 400 dpi
This is necessary when writing by the recording unit of i.
Since such a control technique is well known, a detailed description thereof will be omitted. In this case, the processing of one line on the page memory 5 is completed by repeatedly writing one line in the page memory 5 four times. Therefore, control is performed so that the image of the same line in the page memory 5 can be written four times by the line pointer.

Then, when it is determined in step # 16 that the processing of the next line is not necessary (the processing is completed), the flow of FIG. 8 is terminated. As described above, by adjusting the writing position of the image on the photoconductor during printing, the variation of the recording position is corrected. That is, since the recording position on the recording paper is corrected by determining the writing start position S or S 'and the writing width W, the recorded image can be just-fitted regardless of the presence or absence of an error in the paper cassette used. In addition to this, it is possible to prevent image loss and the like (the invention of claim 3).

Fourth Embodiment The fourth embodiment corresponds to the invention of claim 4, but is also related to the invention of claims 1 and 2. In the third embodiment, the case where the writing position on the photoconductor is adjusted using the held error information has been described. The fourth embodiment is characterized in that the development start position of the developed image on the page memory 5 used for writing an image on the photosensitive member is adjusted using the held error information. doing.

Also in the fourth embodiment, the writing position on the recording paper at the time of printing can be corrected by using the variation information at the time of printing, as in the third embodiment. The processing for setting and storing the error is the same as that in the first embodiment. Here, regarding the recording paper, the transport path, and the page memory 5,
The relationship between the recording positions will be described with reference to an image diagram.

FIG. 9 is a diagram conceptually showing the positional relationship with the respective images of the recording paper, the transport path, and the page memory 5 in the image processing apparatus of the present invention. In the figure, 41 is a recording paper, 42 is a conveyance path, PW is a recording paper 41
, ΔPL is the transfer position error range from the left end, ΔPR is the transfer position error range from the right end, MS is the basic start position of the page memory 5, MSmin is the lowest start position of the page memory 5, MSmax is its maximum start position, MW indicates the width of the image expanded on the page memory 5, MWmin indicates the image width when expanded to the leftmost on the page memory 5, and MWmax indicates the image width when expanded to the rightmost.

FIG. 9 shows a case where an image is developed on the page memory 5 of FIG. 1 and printed on the recording paper 41 conveyed through the conveyance path 42 of the apparatus. Here, the image writing range of the page memory 5 and the recording paper 41 are
The image width MW of the image in the page memory 5 and the width PW of the recording paper 41 are shown to be equal (MW = PW). That is, it shows the basic principle of correcting the deviation of the recording position due to the mounting error of the paper feed cassette or the like, and in practice, there is some margin (non-printing range) at both ends of the width PW of the recording paper 41. Not too much (MW <PW). Also in FIG. 9, when a recording paper of a certain predetermined size is conveyed without error, the recording paper 41
The recording will be done according to the center of. Basically, when the line density and the width of the information (image) to be printed are determined, the image is developed in the width MW portion of the image on the page memory 5 and printing / conveying is performed. In this case, as in the third embodiment, when the previously set error information is stored in a table or the like, the error information is used as a correction value. In the page memory 5 shown in the lower part of FIG. 9,
The image is expanded over the width MW of the image, and the width of the image when expanded to the leftmost is MWmin, and the width of the image when expanded to the rightmost is MWmax. Therefore, the widths of the images actually developed are all the same, and
W = MWmin = MWmax. The width M in this case
W varies depending on the recording size, but in the case of the same size, W has such a relationship.

On the other hand, the recording paper 41 (upper side in FIG. 9) supplied through the conveyance path 42 shown in the center of FIG. Although it has conveyance position error ranges ΔPL and ΔPR from the left and right ends, it is originally designed as ΔPL = ΔPR. When the mounting error of the paper feed cassette or the like is the largest and is farthest to the left, the recording paper 41 is at a position shown by a two-dot chain line. become. The width PW of the recording paper 41 is
The width is the same as the width MW of the image developed in the page memory 5. As a result, if the image is developed from the same development start position on the page memory 5 as the conventional one, that is, from the basic start position MS of the page memory 5, the recording position is shifted due to the error of the recording paper 41.

Therefore, by using the error information, the recording paper 41
Is corrected for the basic start position MS on the page memory 5 by the amount of the error that is carried. The correctable range in this case is from the minimum start position MSmin to the maximum start position M of the page memory 5.
The correction value is determined based on the error information obtained and stored before Smax. Also, if MS '<
When MSmin or MS '> MSmax, MS' = MS
Assuming that min and MS '= MSmax, the maximum error information is set within a system-settable range. The expansion processing after the expansion start position on the page memory 5 is determined is the same as the conventional processing. As described above, by correcting the start position of the image to be developed on the page memory 5 based on the error information of the paper feed cassette or the like, the error of the recording paper 51 supplied from the transport path 52 at the time of printing is eliminated. An image is formed at a predetermined recording position within the width PW. The above operation is shown in the flow.

FIG. 10 is a flow chart showing the main processing flow at the time of image expansion to the page memory in the image processing apparatus of the present invention. In the figure, # 21
~ # 26 indicate steps.

In step # 21 of FIG. 10, image expansion to the page memory 5 is started, and in step # 22, the expansion start address and expansion length of the page memory 5 are determined according to the line density and the width of the print image. To do. In the next step # 23,
It is determined whether error information is set for the paper cassette to be used. When the error information is set, the process proceeds to step # 24, the error information is read to obtain the correction amount S ', the expansion start position MS is corrected to MS', and the process proceeds to step # 25. Here, the correction value MS ′ is M
Smin ≦ MS ′ ≦ MSmax. On the other hand, as a result of the determination in the previous step # 23, when the error information is not set, the expansion start position MS is set and the process proceeds to step # 25. In this case, an initial value corresponding to the image width and the line density to be printed is used. In step # 25, the print image for one page is developed on the page memory 5, and the image development on the page memory shown in FIG. 10 is completed.
By the above operation, the just-fitted recording can be performed so that the recording position of the image is within the predetermined range, and the loss of the image is also prevented (the invention of claim 4).

Fifth Embodiment This fifth embodiment corresponds to the invention of claim 5, but is also related to the inventions of claims 1 to 4.
In the third and fourth embodiments described above, the error information already stored is used to adjust the writing position on the photoconductor 31 or the expansion start position of the expanded image on the page memory 5. Explained the case. In the third and fourth embodiments, the number of the paper feed cassettes or the main body paper feeds used in the image processing apparatus is basically one, and the error information is also 1
This is a case where only one type is used for each paper feed cassette or main body paper feed. However, when a plurality of paper cassettes or main body paper sheets are used, there is a permissible error for each paper cassette, so that it is necessary to adjust each paper cassette. In the fifth embodiment, a plurality of paper feed cassettes or main body paper feeds are used, and held error information is also stored corresponding to the paper feed cassettes or main body paper feeds, respectively. It is characterized in that an error in the recording position is corrected in accordance with the paper feeding cassette or the main body paper feeding.

As described above, conventionally, the recording position (printing position) of an image is adjusted by using various tools and originals at the time of manufacturing, shipping inspection and the like. However, the position may shift due to vibrations and the like that occur in the subsequent processes such as packing and transportation, and in the case of optional parts such as multi-stage paper feeding, the actual used equipment and the equipment to be inspected If there is an error between them, it is inevitable that the user will be misaligned when printing. In the fifth embodiment, for an apparatus used by each user, an error generated between the specific image processing apparatus and an optional part such as a main body feed or a multi-stage feed can be corrected. I have. In this case, input operation of error information,
The storage state of the error information has already been described in the first embodiment. That is, a pattern image is output for each cassette and the error of the recording position is obtained from the distances ΔL and ΔR between the left and right recording positions. The error of the recording position in this case is calculated by the following equation: error = (ΔR−ΔL) / 2. In this way, when the error information calculated for each cassette is set, D
On the operation screen shown in P2 and DP3, an error value is input for each paper feed cassette unit. In this case, in order to select the paper feed cassette and switch the error setting, for example, the function is assigned to the function key and the scroll “up” key and “down” key.

When the function key is pressed while the operation screen shown by DP1 in FIG. 3 is displayed, the DP shown in FIG.
The operation screen of No. 1 is switched to DP2 and becomes the operation screen of the recording position error setting mode. In this case, it is possible to select “paper cassette” or “main body paper”, and either one of them can be selected by pressing the “right” key or “left” key of the scroll. Further, in selecting the set value, the operation screen of DP2 in FIG. 3 is switched to DP3 by pressing the “down” key of the scroll, and the set value selection screen is displayed. The operation of selecting the set value is similar to the operation of DP1 in FIG. 3 described above, the initial value is “+0.0 mm”, and the numerical value is changed by using the “right” key or the “left” key of the scroll. . As shown in FIG. 4, when the error information of the recording position is set for a plurality of types of “paper feed cassette” and “main body paper feed”, the paper feed cassette 1 is displayed on the operation screen of DP2 in FIG. / Paper cassette 2 / Paper cassette 3 / ...,
Items for selecting each paper feed cassette, such as main body paper feed / second paper feed / third paper feed / ..., may be added.
Then, the error information of the recording position is stored together with the information for specifying each paper feed cassette. In this way, the error information of the recording position for each paper feed cassette can be stored in the table format as shown in FIG.

At the time of printing, the error information of the recording position of each paper feed cassette is read out to obtain the correction value. However, even when the paper feed cassette (paper size) is changed page by page, It is possible to read the error information. As described in the third embodiment, the recording start position at the time of writing the LD on the photoconductor is corrected by the error information of the recording position for each sheet feeding cassette (the flow is as shown in FIG. 8). Similarly, as described in the fourth embodiment, the start position of image expansion to the page memory is corrected (the flow is the same as in FIG. 10). Therefore, even when a plurality of paper feed cassettes or main body paper feeds are used, it is possible to adjust the deviation of the recording position for each paper feed cassette, so that the image recording position falls within a predetermined range.
Just-fitted recording becomes possible and loss of images is prevented.

[0058]

According to the image processing apparatus of the first aspect, in the image processing apparatus for recording using plain paper, the error information of the recording position obtained by the measurement result of the output pattern image for confirming the recording position is obtained. An error information input means for inputting, an error information storage means for storing the error information of the recording position, and an error information confirmation means for confirming the error information of the recording position are provided. Therefore, if the error information about the recording position deviation at the time of printing is stored only once, it is possible to use the recording position variation information thereafter without outputting the pattern image for checking the recording position. Become.

In the image processing apparatus of the second aspect, the image processing apparatus of the first aspect is provided with error information adding means for adding the error information of the recording position to the service report or the like. Therefore, if not only the user but also a service person uses it for maintenance, quick adjustment work becomes possible.

According to a third aspect of the present invention, in the image processing apparatus according to the first or second aspect, there is provided error information reading means for reading the error information of the recording position and a correction value for the error information read at the time of printing. Is provided with a writing position adjusting means for adjusting the writing position on the photosensitive member.
Therefore, in addition to the effects similar to those of the image processing apparatus according to claims 1 and 2, it is possible to perform just-fitted recording so that the image recording position falls within a predetermined range, and
Image loss and the like are also prevented.

According to the image processing apparatus of claim 4, in the image processing apparatus of claim 1 or 2, the error information reading means for reading error information of the recording position and the error information of the recording position read at the time of printing. Is used as a correction value to adjust the expansion position on the page memory. Therefore, in addition to the same effects as those of the image processing apparatus according to the first and second aspects, it is possible to perform just-fit recording so that the recording position of the image is within a predetermined range, and to prevent missing of the image. Is done.

In the image processing apparatus of the fifth aspect, the error information input means for inputting the error information of the recording position in each cassette unit, and the pattern error information storage means for registering and storing the error information of the recording position in each cassette unit. A recording paper cassette selecting means for selecting a recording paper cassette of an optimum size at the time of printing, an error information reading means for reading error information of a recording position for each selected cassette unit, and at the time of printing,
Position adjustment means for adjusting the writing position on the photosensitive member or the expansion position on the page memory using the read error information of the recording position as a correction value is provided. Therefore, in addition to the effects of the image processing device according to claim 3 or 4,
Even when the paper feed cassette (paper size) is changed in page units, the error information can be read out for each corresponding cassette, so that the recording position can be corrected in paper feed cassette units.

[Brief description of drawings]

FIG. 1 is a functional block diagram illustrating an example of an embodiment of a main part configuration of an image processing apparatus according to the present invention.

FIG. 2 is a diagram showing an example of a pattern used in image evaluation and the like.

FIG. 3 is a diagram showing an example of a display screen when a set value of a recording position error is input in the image processing apparatus of the present invention.

FIG. 4 is a diagram conceptually showing an example of a storage state of error information stored in the system memory 2.

FIG. 5 is a diagram showing an example of a report that outputs stored error information as a system parameter list.

FIG. 6 is a flowchart of a case where a system parameter list is created by adding error information to the image processing device of this invention.

FIG. 7 is a perspective view conceptually showing a state in which a latent image is drawn on a photoconductor by a polygon mirror in the image processing apparatus of the present invention.

FIG. 8 is a flowchart showing a main processing flow when writing an LD on a photoconductor in the image processing apparatus of the present invention.

FIG. 9 is a diagram conceptually showing the positional relationship between each image of the recording paper, the transport path, and the page memory 5 in the image processing apparatus of the present invention.

FIG. 10 is a flowchart showing a main processing flow when an image is expanded in a page memory in the image processing apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 System control part 2 System memory 3 Scanner 4 Plotter 5 Page memory 6 Network control part 7 G3 FAX modem 8 Picture information memory 9 Encoding / decoding part 10 Operation display part

Claims (5)

[Claims] 1. An operation control means for outputting a pattern for confirming a recording position of an image corresponding to a recording paper size, and the pattern is printed inside the standard recording paper when the control by the operation control means is executed. Format forming means for formatting the pattern as described above, image expanding means for expanding the pattern on the page memory as an output image, and print control means for printing the image of the expanded pattern by the recording unit of the machine. In an image processing apparatus for recording using paper, an error information input unit for inputting error information of a recording position obtained by a measurement result of the output pattern image for recording position confirmation, and error information of the recording position Error information storage means for storing, and error information confirmation means for confirming the error information of the recording position,
An image processing apparatus comprising: 2. The image processing apparatus according to claim 1, further comprising error information adding means for adding the error information of the recording position to a service report or the like. 3. The image processing apparatus according to claim 1, wherein the error information reading unit reads the error information of the recording position, and the read error information is written as a correction value on the photoconductor during printing. An image processing apparatus comprising: a writing position adjusting unit that adjusts the position. 4. The image processing apparatus according to claim 1, wherein an error information reading unit that reads the error information of the recording position and a page memory that uses the error information of the recording position that is read during printing as a correction value. An image processing apparatus comprising: an expansion position adjusting means for adjusting an upper expansion position. 5. An operation control means for outputting a pattern for checking a recording position of an image corresponding to a recording paper size, and the pattern is printed inside the fixed recording paper when the control by the operation control means is executed. Format forming means for formatting the pattern as described above, image expanding means for expanding the pattern on the page memory as an output image, and print control means for printing the image of the expanded pattern by the recording unit of the machine. In an image processing apparatus for recording using paper, error information input means for inputting error information of a recording position obtained by a measurement result of the output pattern image for recording position confirmation for each cassette unit, Pattern error information storage means for registering and storing error information of recording position for each cassette unit, and optimum size for printing Recording paper cassette selecting means for selecting one of the recording paper cassettes, an error information reading means for reading the error information of the recording position for each selected cassette, and a correction value for the error information of the recording position read during printing. An image processing apparatus comprising: a position adjusting means for adjusting a writing position on the photosensitive member or a developing position on the page memory.