JPH04193561A - Page printer - Google Patents

Abstract

PURPOSE:To process an efficient jam recovery by so controlling as to obtain a preliminarily another area without lap writing registered character data regarding registered character data designated for the same area and to temporarily store it. CONSTITUTION:Even when designated registered character data is received so as to lap write the data on the same area on a registered character data storage unit 19 by using a registered character data control table 17 and a lap write designation data control table 18, the designation of storage area is altered to control so as not to lap write. A frame buffer 20 can hold plotting image for one page. A plotter 13 plots registered character data while normally referring to a character code when the registered character data is plotted in the buffer 20, adds a registered character data storage area number to registered character information on a page buffer 16 for once plotted registered character, plots the registered character while referring to the number, and prints in a printing mechanism 14 after plotting.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a page printer capable of storing registered character data.

[Conventional technology]

Conventionally, when this type of page printer receives registered character data including a storage area specification and a character pattern,
Character patterns were always stored in the registered character data storage area specified by the host computer. After storage, when another registered character data specifying the same area was received, the registered (stored) character pattern was erased and the character pattern of the other registered character data was stored and overwritten. . Therefore, if the second registered character data specifying the same area is received after the character pattern of the first registered character data is drawn in the frame buffer,
Since the information of the first registered character data remains only on the frame buffer, when a jam occurs, jam recovery processing is performed using the data on the frame buffer.

(Problems to be Solved by the Invention) The conventional page printer described above always stores the character pattern in the area specified by the host computer when it receives registered character data, so it is difficult to recover from jams. Processing must be performed using data on the frame buffer. Therefore, when performing jam recovery processing, if a registered character pattern exists, the next page cannot be drawn until the ejection of that page is completed. This has the disadvantage that processing speed becomes slower.

SUMMARY OF THE INVENTION An object of the present invention is to provide a page printer in which the processing speed does not slow down even when a registered character pattern exists when performing jam recovery processing.

[Means to solve the problem]

The page printer of the present invention has a plurality of registered character data storage areas each capable of storing each registered character data, and a plurality of preliminary character data storage areas for overwriting processing each capable of temporarily storing each registered character data. When registered character data is already stored in any of the registered character data storage areas, if data requesting new registered character data to be stored in the same registered character data storage area is received, the new registered character data is stored in the same registered character data storage area. The registered character data to be stored in the character data storage area for overwriting processing is temporarily stored in the character data storage area for overwriting processing, and when it becomes possible to store the registered character data in the character data storage area for overwriting processing, the registered character data temporarily stored in the character data storage area for overwriting processing is stored. and a control unit that stores data in an unused portion of the registered character data storage area.

[Function] When registered character data is stored in any of the registered character data storage areas and new registered character data to be stored in the same registered character data storage area is received, the control unit stores the received registered character data. Since the data is temporarily stored in the character data storage area for overwriting processing, when performing the jam recovery processing, the next page can be drawn even if the ejection of that page is not completed.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram showing an embodiment of the page printer of the present invention, and FIG. 2 is a registered character data management table 1 in FIG.
FIG. 3 is a block diagram showing the overwrite designation data management table 18 in FIG. 1, and FIG. 4 is a block diagram showing the registered character data storage section 19 in FIG.

Upon receiving registered character data including a storage area designation and a character pattern from a host computer (not shown) via the interface control unit 11, the received data control unit 12 passes the received registered character data to the registered character data control unit 15.

The registered character data control section 15 uses the n-recorded character data management table 17 and the overlap designation data management table 18 to specify registered character data that is specified to be overlapped in the same area on the registered character data storage section 19. Even when receiving an I, the storage area specification is changed to prevent overwriting.
do. The page buffer 16 is a buffer that can store several pages worth of character data. The frame buffer 20 is a buffer that can store a drawing image for one page. When the drawing unit 13 draws registered character data on the frame buffer 20, it usually draws it while referring to the character code, but for the registered characters that have been drawn -, the registered character data is stored in the registered character information on the page buffer 16. Add an area number (hereinafter referred to as area number),
Jam recovery: At times, registered characters are drawn while referring to the area number, and after drawing, the printing mechanism 14 is made to print.

As shown in FIG. 2, the registered character management table 17 has area numbers 1, 2, . . . , n-1, and n, each area 21 has an area 22 for storing a character code, an area 23 for storing an overwrite processing area number, and an area in use flag 24. As shown in FIG. 3, the overwrite designation data management table 18 includes overwrite processing area numbers 1. u+1. ..., j7+m-1+ J
Each area 31 indicating +m has a J rear 32 for storing a character code. As shown in FIG. 4, the registered character data storage section 19 includes areas 1, 2, . . . which are registered character data storage areas for storing registered character data, respectively.・・・
. , n-i, n, and 1, f!, which are character data storage areas for overwriting processing. →-1,
, and a second area consisting of J0m-1, 11-m.

Next, the process of receiving and storing registered character data will be explained.

The received registered character data is displayed in the table as shown in Table 1.
1.

In the registered character data management table 17, if the area in use flag 24 for the area number is off, the character ]-do C is stored in the area 22 for storing character codes in the registered character data management table 17, and the registered text is ? Area K1 in the first area 41 of the data storage unit 19 (area K
) stores the character pattern D. In addition, in the registered character data management table 17, if the in-use flag 24 for the area number is on, the overwrite designation data management table 18 Area J-1 in the second area 42 for overwriting processing of the registered character data storage section 19! Store the character pattern D (with the overwrite processing area number J2+j) in the empty area of -1-m, and store the character pattern D of the overwrite processing area number J -1-j in the overwrite specification data management table 18. The character code C is stored in the area 32 for storing the character code C, and the area number for overwriting processing J+j is stored in the area 23 for storing the area number for overwriting processing on the area number of the registered character data management table 17.

Next, registered character code reference processing will be explained.

The n-record character code drawing data format in the page buffer 16 is shown in Table 2, as shown in Table 2.

Area 2 for storing character codes of registered character data management table 17 or overwrite specification data management table 18
2. Search to see if character code cp exists in 32.

Search procedure a) Area number for overlapping processing (1-
1-j) exists, area number 1 of the overwrite specification data management table 18
+ Check whether the character code of j is Cp. If the character code checked is Cp, it is drawn, but Cp
If not, set it as K...K-1-1.

b) When there is no overwrite processing area number for area number K, check whether the character code for the area number in the registered character data management table 17 is Cp. If the checked character code is Cp, it is drawn, but if it is not Cp, it is set to +1.

Next, processing at the time of drawing will be explained.

The processing is performed as follows depending on each of cases a) and b) of the registered character code reference processing described above.

In the case of a), the area number +j is stored in the area number of the registered character code in the page buffer 16.

In case b), the area number K is stored in the area number of the registered character code in the page buffer 16. The area in use flag 24 of the registered character data management table 17 is turned on.

Next, the drawing process during jam recovery will be explained.

The registered character code drawing data format in the page buffer 16 is as shown in Table 3.

At the time of jam recovery, drawing is performed with reference to the area number of the registered character code drawing data in the page buffer 16.

Next, the process of moving the registered character data in the overwrite processing area to the registered character data storage area will be described. This is done when there is no data inside the printer and all pages have been ejected.

1) If the registered character data has an overwriting processing area number ("+j") in the area number in the management table 17, the area l- of the registered character data storage section 19
Move the registered character data of +j to area K. If there is no area number for overwriting processing in the area number in the registered character data management table 17, no processing is performed.

ii) When the processing of i > is completed for 1 to N, the contents of the overwrite specification data management table 18 are cleared, and the in-use flag 24 of each area of the registered character management table 17 is cleared, and the next Prepare to receive registered character data.

〔Effect of the invention〕

As explained above, the present invention manages registered character data that specifies the same area by securing another preliminary area and managing it so that it is temporarily stored without overwriting zero-registered character data. Efficient jam recovery as the next page can be drawn even if the page has not been ejected completely.
Since the processing can be performed, there is an effect that the processing speed does not slow down even if there are registered characters.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the page printer of the present invention, and FIG. 2 is a registered character data management table 1 in FIG.
7, FIG. 3 is a block diagram showing the overwrite designation data management table 18 in FIG. 1, and FIG. 4 is a block diagram showing the 6th record character data storage section 19 in 1F. 11...Interface control [1-control section, 12.
...Received data control unit, 13...Drawing unit, 14...Printing mechanism, 15...Registered character data control unit, 16...Page stamp, 17...Registered character data management table, 18... - Overwrite specification data management table, 19...Registered character data storage section, 2o...Frame buffer, 21.22.23.24...Each area of registered character data management table 17, 3'l, 32 ...Overwrite specification data management table 1
Each area of 8, 41...6 records?゛First area of data storage section 19, 42...Second area of registered character data storage section 19. 3. Figure 2. Section 3. Figure 4.

Claims (1)

[Claims] 1. In a page printer having a plurality of registered character data storage areas each capable of storing each registered character data, a plurality of preliminary character data storage areas for overwriting processing each capable of temporarily storing each registered character data. When registered character data is already stored in either of the area and the registered character data storage area, when receiving data requesting that registered character data be newly stored in the same registered character data storage area, The registered character data to be newly stored is temporarily stored in the character data storage area for overwriting processing, and when it becomes possible to store it in the character data storage area for overwriting processing, the registration is temporarily stored in the character data storage area for overwriting processing. A page printer comprising: a control section that stores character data in an unused portion of a registered character data storage area.