JPS61130077A - Page-counting system for continuous paper - Google Patents

Abstract

PURPOSE:To enable accurate page counting, by a system wherein a transferred paper length is led out from a storage area, and a page counter is operated to count pages when the distance between a transferring part and a fixing part or a paper stacking part and the length of the oldest page satisfy a specified expression and page counting is required. CONSTITUTION:In the case of fixing, when transfer is started (1), the length of the pages transferred is stored into a memory on a page basis (2). A calculating part calculates the total transferred length Ls (3), calculates Ls-Lc(distance between a transferring part and a fixing part or a paper stacking part)-Lo(length of the oldest page), and a comparing part checks whether or not the relation Ls-Lc-Lo>=0 is satisfied (4). When the relation is not satisfied (a), transfer is conducted (1). When the relation is satisfied (b), it is checked whether or not the page counting is required (t). In the case of the page for which logic '1' is stored in the memory for the case of making a plurality of copies, a counter at the fixing part is not operated, but in the case of logic '0', the counter is incremented (6). The data of the length of the oldest transferred page of the printing paper thus obtained are discarded (7). An initial state of Ls=Ls-Lo is again provided (8), and the next counting-up operation is repeated. A counter at a stacker is operated similarly.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a page counting system for continuous paper, and more particularly, to a printing method having a page counter for continuous paper that has been transferred in a transfer section, a fixing section, and a paper stacking section. This relates to the page counting method for continuous paper in the device.

[Conventional technology]

There are various printing devices, but one that can print kanji,
Laser printing devices are used because of their advantages of high processing speed and low printing noise. This laser printing apparatus is constructed as shown in FIG. Laser light is focused on the photoconductor by a rotating polygon mirror and irradiated onto the photoconductor 1.
A developing device 2 performs development on the light irradiation portion of the sheet, and the developed image is transferred onto a continuous paper 3 by a transfer device 4. The transferred continuous paper 3 is fixed by a fixing unit 5 and stacked in a paper stacking unit 6 (hereinafter referred to as a stacker).

This printing device is configured such that a transfer device, a fixing section, and a stacker position are separated from each other. Therefore, it is necessary to count the pages of the transferred continuous paper at three locations.

Therefore, three counters (hereinafter referred to as counters) are provided in each case.

These counters control the count of each counter based on the distance difference between the transfer and fixing distances and the distance between the transfer and stacker. Therefore, there is a problem in that there is no accuracy in counting one hundred, and if the continuous paper to be printed is changed, the page length of the paper changes, making it necessary to readjust it.

[Problem that the invention seeks to solve]

In view of the above-mentioned conventional situation, this invention provides a hundreds counting method for continuous paper that has particularly high accuracy in hundreds counting, and is designed to improve the accuracy of counting, the length of transferred continuous paper, transfer and fixing, transfer and stacking. The aim is to achieve accurate counting based on the distance between .

[Means for solving problems]

In order to solve the above-mentioned problems, this invention stores the length of the transferred paper in units of pages in the printing device, and also provides a storage area for storing whether or not counting by 100 is necessary. Calculate the completed paper length Ls, and make sure that the distance Lc between the transfer section and the fixing section or the paper stacking section and the page length Lo of the oldest page satisfy the following formula, Ls-Lc-Lo≧0, and the 100-count "required" ”, the counter is activated to count the pages.

[Effect]

The counting method described above is convenient for changing paper by discarding the oldest pages, and is useful for paper that does not count,
For example, even when the same printing is performed on multiple sheets, highly accurate counting can be performed.

〔Example〕

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

FIG. 1 is a block diagram of a main part of an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the present invention. When a printing device starts printing on a continuous sheet of paper, it requires an extra length relative to the transfer position of the sheet so that the continuous sheet of paper can be fed a predetermined distance.

Also, even if printing is performed continuously from page 1, this portion will have the oldest page length Lo.

When the printing device starts printing, it clears the counter, etc., and when the transfer of data from the buffer 10 starts, the print control unit 11 operates the transfer counter 12 of the transfer device, and also calculates the page length of each transferred page. and a print number designation signal are stored in the memory 13. The page length is the length of one page of the continuous paper used, and is the value of the page length designation register 14.

Further, the print number designation signal is the number of copies specified by the register 15, and when a plurality of copies of the same page are made, for example, a logic value of "1°" is output, and a logic value of "1°" is registered in the memo January 3.

This logic "1" becomes a signal that does not operate the counter.

The calculation unit 16 reads the memory 1 according to the command from the print control unit 11.
The page lengths of each page stored in 3 are summed up moment by moment, and the total value is calculated as follows: Transferred paper length Ls - Distance Lc between the transfer device and fixing unit or stacker - Page length Lo of the oldest page. Perform calculations. However, the distance L between the transfer device and the fixing unit or stacker
c is determined by the printing device and input from the register 17. The computation result is input to the comparator 18, and the comparator 18 determines that if the computation result is greater than O, that is, Ls-Lc-Lo≧0
At this time, the counter, the counter 19 of the fixing section or the counter 20 of the stacker, is operated to perform count amplification.

The above operation will be explained with reference to FIG. The printing device is
Transfer is started in response to a command from the central processing unit. This is the state (1) shown in FIG. Hereinafter, the states in FIG. 2 will be indicated by numbers in parentheses. In order to make the explanation easier to understand, FIG. 2 shows the case of fixing.

When the transfer is started, the transfer page length is stored in memory in page units (2). The calculation unit calculates the total transcription length Ls of the stored transcription page lengths (3), Ls-Lc-L.

The comparison section checks whether Ls-Lc-Lo≧O (4). If Ls-Lc-Lo≧0 is not satisfied,
Perform transcription (1). When the above formula is satisfied, it is checked whether counting is necessary (5). If the page has a logic "1" stored in the memory when multiple copies are made as described above, the fixing unit counter does not operate, and when the logic is "0", the fixing unit counter 19 (6). Discard the data of the oldest transferred page length of the printing paper obtained in this way (7). Set to the initial state of Ls = Ls - Lo (8
), the next count amplifier operation is repeated. Although the explanation above has been made with reference to the fixing unit counter, the stacker counter operates in the same manner.

〔Effect of the invention〕

Now, as can be understood from the above explanation, in short, this invention enables highly accurate page counting by operating the page counters of the fixing unit and stacker depending on whether counting is necessary, and also allows easy change of printing paper. , which is highly effective in reducing waste of printed output and facilitating handling.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a main part of an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the present invention, and FIG. 3 is a configuration diagram of a laser printing apparatus. In the figure, 1 is a photoreceptor, 2 is a developer, 3 is continuous paper,
4 is a transfer device, 5 is a fixing unit, 6 is a stacker 12 is a transfer counter, 13 is a memory, 19 is a fixing counter, and 20 is a stacker counter.

Claims (1)

[Scope of Claims] A printing device for printing on continuous paper, comprising a transfer section, a fixing section, a paper stacking section, and respective counters for counting the pages of the transferred paper of the three parts. , a storage area is provided in the printing device to store the length of the transferred paper in units of pages and also to store whether or not page counting is necessary, the transferred paper length Ls is derived from the storage area, and the transfer unit and the fixing unit Alternatively, when the distance Lc between the sheet stacking section and the page length Lo of the oldest page satisfies the following formula, Ls-Lc-Lo≧0, the counter is activated to count the pages when the page count is "required". A page counting method for continuous paper that is characterized by counting.