JPH04175176A - Perfecting page printer - Google Patents

Abstract

PURPOSE:To efficiently conduct a perfecting printing without deteriorating a printing quality by providing a printing mechanism which is vertically disposed and provided with two printing surfaces opposed to each other for printing data for one page on each surface of printing paper set in position by an automatic paper feed mechanism. CONSTITUTION:A printing mechanism 2 is vertically disposed and provided with two printing surfaces opposed to each other for printing data for one page on each surface of printing paper fed along a line shown by a dotted line 6 by an automatic paper feed mechanism. When data is transmitted from an information processing equipment connected to a buffer 1 in an online system, a control part 5 reads the data for one page from the buffer 1 and transmits the data to a memory 3 for the first printing surface. Succeedingly, the control part 5 checks whether the data remains in the buffer 1. If the data remains, the control part 5 further reads the data for one page from the buffer 1 and transmits the data to a memory 4 for the other printing surface. Moreover, after identifying the setting of printing paper in position by the automatic paper feed mechanism, the control part 5 makes the printing mechanism 2 start printing.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a double-sided page printer, and particularly to a page printer used in an information processing system that simultaneously prints document data, etc. on both sides of print paper in units of pages. Regarding.

[Conventional technology]

Document data from information processing equipment is A4. A printer that can print and output one page at a time on print paper cut to a size such as B4 is called a page printer. This kind of page printer is based on DTP (Desk Top Pub), which was created by the development of document formatting software or page language.
In the field of ``lishing'', this is essential in order to enable the page layout as specified by the user.

In a page printer, data transferred from an information processing device connected online is temporarily stored in a buffer, the control unit reads the data from the buffer in units of one page, and instructs the printing mechanism to print one page. Print in units.

[Problem to be solved by the invention]

However, with such page printers, the printing mechanism has only one printing surface and can only print on one side of the print paper in one printing operation, so when trying to print on both sides of the print paper - once the printing is completed For example, you may need to eject the print paper, turn it over, and set it again.
It can only be done extremely inefficiently. Also, even if you try to print on both sides by simply placing another printing mechanism on the back, the conventional printer has a horizontal printing surface, so one printing mechanism has to lie on its back when printing. Because of this, it is difficult to print uniformly on both sides. Furthermore, a printing mechanism that operates normally even when mounted on the user's back has a complicated structure, making the device expensive.

An object of the present invention is to perform such double-sided printing efficiently and without deteriorating print quality.

[Means to solve the problem]

The double-sided page printer of the present invention has a buffer that temporarily stores data transferred from an information processing device connected online, and an automatic paper feeding mechanism that is installed vertically and has two printing surfaces facing each other. a printing mechanism that prints one page of data on each side of print paper set at a predetermined position; a memory that stores one page of data corresponding to each printing surface of the printing mechanism; It has a control section that controls everything.

〔Example〕

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

1 and 2 show one embodiment of the invention. In FIG. 1, one embodiment of the present invention has a buffer 1 for temporarily storing data transferred from an information processing device connected online. The printing mechanism 2 is installed vertically and has two printing surfaces facing each other, and is transported by an automatic paper feeding mechanism along the line indicated by the dotted line 6, and prints one page each on both sides of the print paper set at a predetermined position. It is a mechanism for printing data, and memory 3 stores one page's worth of data for one printing surface, and memory 4 stores one page's worth of data for the other printing surface. It's memory. The control section 5 is configured to control each section.

When data is transferred from the information processing device connected online to the buffer 1 (step 101 in Figure 2), the control unit 5 first reads data equivalent to one page from the buffer 1 and prints it on the first printing surface. (step 102 in FIG. 2). Next, the control unit 5 checks whether data remains in the buffer 1 (step 103 in FIG. 2), and if so, reads data equivalent to one more page from the buffer 1 and prints it on another printing surface. (step 104 in FIG. 2). Furthermore, it is confirmed that the print paper is set in a predetermined position by the automatic paper feeding mechanism (step 105 in Fig. 2), and the printing mechanism 2 is instructed to start printing (step 106 in Fig. 2). . Note that if no data remains in the buffer 1 at step 103 in FIG. 2, control moves to step 105.

When the printing of one sheet of print paper is completed, the control section 5 checks whether there is any data left in the buffer 1 (step 107 in FIG. 2), and if there is, then the control section 5 checks whether there is any data left in the buffer 1 (step 107 in FIG. 2).
Repeat the following actions.

In this embodiment, the paper is conveyed from the bottom to the top of the printing mechanism, but it is also possible to place the printing surface vertically and convey the paper horizontally.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to efficiently print on both sides without ejecting and resetting the print paper, and without deteriorating print quality. effective.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the control section. 1. Buffer, 2. Printing mechanism, 3.4. Memo 1
5. Control unit.

Claims (1)

[Claims] It has a buffer that temporarily stores data transferred from an information processing device connected online, and is installed vertically, has two printing surfaces facing each other, and is set in a predetermined position by an automatic paper feed mechanism. A printing mechanism that prints one page of data on each side of printing paper, a memory that stores one page of data corresponding to each printing surface of the printing mechanism, and a control unit that controls all of these. A double-sided page printer comprising: