JP2005148992A - Print control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a raster printer capable of performing double-sided printing which is easily operated by a user by reading a printing registration information at the time of surface printing and performing the alignig at the time of back surface printing based on the information. <P>SOLUTION: White line data is printed as the surface printing registration information, and the registration information is read to be used for the registration information at the time of back surface printing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a printing control method in a printer system that controls double-sided printing.

In general, as a method of matching the print positions of the front print data and the reverse print data during double-sided printing, the user can set a print position shift (see Patent Document 1 below), print a mark, The position is adjusted by reading (see Patent Document 2 below).
JP 2000-177197 A JP 2002-273916 A

  However, the conventional example has the following problems.

  -Each time the user checks the misalignment of the print position and prints, the misalignment correction amount must be entered.

  -If the mark is printed and aligned, the printed mark remains as an unnecessary print.

  The present invention has been made paying attention to the above problems, and in a raster printer capable of duplex printing, print position information is read at the time of front side printing, and print position alignment is performed at the time of back side printing based on that information. An object of the present invention is to provide a printing control method capable of realizing double-sided printing that is easy for the user to handle.

  In order to solve the above problems, according to the present invention, at the time of front side printing, even when there is no print data at the top and bottom of the printable range, white data is printed, thereby printing in the paper. By detecting the position of the printable range and printing on the back side based on the position information, it eliminates the need for user operations and solves problems such as printing unnecessary print data. can do.

  The above configuration is shown again in the following (1) and (2).

  (1) For a printer having a double-sided printing function, when printing the surface, means for inserting white lines at the upper limit position and the lower limit position of the printable range, and the upper limit position and the lower limit position of the printable range to the printer A printing control method comprising: a means for notifying, wherein the printing position of the front surface and the back surface can be adjusted based on the position information of the white line during back surface printing.

  (2) When there is data at the upper limit position and the lower limit position of the printable range, a white pixel is inserted into a pixel having no data in one line without inserting a white line. The printing control method according to (1).

  According to the present invention, it is possible to detect the printable range on the printer side by sending data of the first line and the last line of the printable range at the time of front side printing as white lines, and to match the data to the position at the time of back side printing. it can.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below based on an embodiment with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram in which the present invention is implemented. In the figure, C1 is a host computer for operating a printer driver. C2 is a printer driver, C3 is a storage device for storing print data, and C4 is an interface with an external device. C5 is a printer main body, C6 is an interface with an external device, C7 is a reception buffer for receiving data, C8 is a control unit for controlling the printer, and C9 is a printer engine unit for actually performing printing.

  FIG. 2 is a flowchart regarding processing on the printer driver side that best represents the features of the present invention, and FIG. 3 is a flowchart of processing on the printer side.

  First, the driver processing of FIG. 2 is performed. When printing is started (S2-1), the driver C2 renders data sent from the application (S2-2) and converts it into raster data. At this time, it is confirmed whether there is data on the highest line of the printable range (S2-3). If there is no data, white line data is added (S2-4) and transmitted to the printer C5 (S2-5). . The data for the second and subsequent lines is transmitted to the printer C5 (S2-6). Finally, it is confirmed whether there is data on the lowest line (S2-7). If there is no data, white line data is added ( S2-8), and transmits to the printer C5 (S2-9). In this way, the printer driver C2 always sends the information of the highest line and the lowest line of the printable range as print data to the printer C5. Here, the end of the page is confirmed (S2-10), and if the page is finished, the printing is finished (S2-11). If there is still a page, the process returns to the beginning to render the next page.

  On the other hand, when receiving data, the printer C5 that receives data first feeds paper (S3-1), and then prints print data sent from the driver C2. At this time, the position is stored as the lowest position (S3-2). If the first data is not white line data (S3-3), printing is performed (S3-4), and if it is white line data, printing is not performed. Thereafter, data for one page is printed (S3-5). When the last line data is received, the position is stored as the highest position (S3-6), and the received data is white line data. If not (S3-7), printing is not performed, otherwise printing is performed (S3-8), printing on the front side is terminated, and reverse printing is performed in order to shift to double-sided printing. (S3-9).

  When the back side printing is started, the back side is printed from the lowest position according to the specifications of the paper feed system. Therefore, the feed amount at the time of back side feeding is acquired (S3-10), and the highest level print stored earlier is performed. The position is compared (S3-11). If a difference occurs, only the difference is fed (S3-12), but if the feed cannot be made in the reverse direction, the feed is performed only when the difference occurs in the paper feed direction. Thereafter, the data sent is printed in order (S3-13), and discharged after the printing is finished (S3-14). If it is determined in step S3-15 that there is still page data, the process returns to the top and the next page is processed.

Block diagram of a system implementing the present invention Flowchart of driver processing according to the first embodiment of the present invention Flowchart of printer processing according to the first embodiment of the present invention.

Explanation of symbols

C1 Host computer C2 Printer driver (driver)
C3 Storage device C4 Interface C5 Printer main body C6 Interface C7 Reception buffer C8 Control unit C9 Printer engine unit

Claims (2)

  Means for inserting white lines at the upper limit position and lower limit position of the printable range and means for notifying the upper limit position and lower limit position of the printable range to the printer having a duplex printing function when printing the front side The printing control method is characterized in that the printing position of the front surface and the back surface can be adjusted based on the position information of the white line during back surface printing.   2. The method according to claim 1, wherein when there is data at an upper limit position and a lower limit position of the printable range, a white pixel is inserted into a pixel having no data in one line without inserting a white line. The printing control method as described.

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