JPS63295263A - Printer - Google Patents

Abstract

PURPOSE:To enable document images with color designation to be outputted with favorable discriminability irrespective of the color of a paper, by reversing document image data inputted with color designation, and expanding background color data assigned a background color and the document image data respectively into different page memories under control. CONSTITUTION:When document image data with color designation is inputted, a CPU 4 so functions that the document image data is expanded into either one of a first output page buffer 7a and a second output page buffer 7b capable of reproducing the relevant color, whereas background image data obtained by reversing the document image data is expanded into the other output page buffer. When a background-canceling command is inputted from a panel 10, the reversion of the document image data for forming the background image data is stopped. Thus, for example, a shaded part is developed in a background color of black, while character patterns with color designation of yellow are developed in yellow, on the same paper, whereby images discriminable as the character patterns with favorable discriminability can be printed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing device that processes an input document image for each color and outputs a multicolor document image.

[Conventional technology]

Conventionally, in this type of device, a document image with specified colors output from a host computer serving as a data source is developed into different page buffers for each specified color, and the colors are specified on the same side of the paper being fed. A desired multicolor image is obtained by forming a document image according to, for example, a known electrophotographic process.

[Problem that the invention seeks to solve]

However, depending on the color of the toner used as a developing material in a printer used for multicolor images, for example, in the case of yellow, the image becomes very difficult to distinguish if the fed paper is white paper.

Furthermore, if the fed paper is colored paper and a document image created manually is developed using a developing material of the same color, it will similarly result in a color image with very poor distinguishability. There was a problem.

This invention was made to solve the above problems, and by generating an inverted image of document image data inputted with color specification and performing background processing with a different color, document image data with color specification is generated. To provide a printing device capable of outputting images with good discrimination regardless of paper color.

(Means for Solving the Problems) A printing device according to the present invention inverts document image data input with color specification and stores the background color data and the document image data, each of which is a background color, in different page memories. A deployment control means for controlling deployment is provided.

(Function) In the present invention, the development control means inverts document image data inputted manually with a designated color, generates background color data to be a background color, and develops the data in different page memories.

〔Example〕

FIG. 1 is a block diagram illustrating the configuration of a printing apparatus according to an embodiment of the present invention. Reference numeral 1 denotes a data generation source constituted by, for example, a host computer, and numeral 1 denotes a data generation source that transmits color-specified document image data to the printer apparatus 2. It is output to the input interface section 3. The printer unit 2 includes a CPU 4 that controls the printer unit 2 overall, and a ROM 5 . RAM 6. which stores various data, flag information, calculation results, etc. of the CPU 4; A first output page buffer 7a, a second output page buffer 7b, a character pattern generating section 8 which converts the character code output from the CPU 4 into a character pattern and outputs it to the first output page buffer 7a and the second output page buffer 7b. An output device 9 that prints out the pattern information developed in the first output page buffer 7a and the second output page buffer 7b as an image. Furthermore, the panel 10 outputs the inputted document image data with color specification to a first output page buffer 7a.

A background processing cancellation command is selected when color development is performed on either one of the second output page buffers 7b.

Note that, when document image data with a specified color is input, the CPU 4, which also serves as the development control means of the present invention, develops the data into either the first output page buffer 7a or the second output page buffer 7b that can reproduce the color. , to an output page buffer different from the expanded output page buffer,
Background image data is developed by inverting the color-specified document image. However, if a background cancellation command is input from the panel 10, the inversion processing of the color-designated document image data for generating background image data is stopped.

Next, the print control operation according to the present invention will be explained with reference to FIGS. 2 and 3.

FIG. 2 is a flowchart illustrating the background processing procedure according to the present invention. Note that (1) to (7) indicate each step.

First, the CPU 4 operates as the first output page buffer 7a.

To clear the second output page buffer 7b 1) To start receiving the color-specified document image data from the data source 1 2) To determine whether or not the color-specified document image data has been received (reception OK) 3 ), if NO, the process returns to step (2), and if YES, it is determined whether or not to develop the received color-designated document image data, for example, in the first output page buffer 7a (4), and to perform a page break (5). If this judgment is NO, return to step (2) and select YE.
In the case of S, the color specified document image data developed in the first output page buffer 7a is inverted and developed in the second output page buffer 7b6), and then developed in the first output page buffer 7a and the second output page buffer 7b. Output the document image data and background image data with specified colors from the output device 9 and print them on the same paper (not shown)7)
, return to step (1).

As a result, for example, when a character pattern is developed with yellow designation on the first output page buffer 7a, and an inverted image of this character pattern, that is, background image data is developed on the second output page buffer 7b, as shown in FIG. 3, for example. Furthermore, on the same sheet of paper, the shaded areas are developed with a black background color, and the character patterns designated as yellow are developed with yellow, making it possible to print an image in which the character patterns can be easily identified.

In addition, in the above embodiment, the case where all document image data for which a color is specified is printed with a background color is explained, but in particular, if the color specification for the document image data is black and the paper is white, the background color Since processing may reduce color discrimination, CP is removed from panel 10.
If a background canceling command is input to U4 and the background printing process can be executed selectively depending on the presence or absence of this background canceling command, the background printing process can be executed more effectively.

〔Effect of the invention〕

As explained above, the present invention is provided with a development control means that inverts the document image data inputted with color specification and controls the development of the background color data and the document image data, each of which becomes a background color, in different page memories. Therefore, it is possible to form a background color on the same sheet of paper together with the document image data that makes it easy to distinguish the color specified in the manually inputted document image data. It has the excellent advantage of being able to print rich color images.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating the configuration of a printing apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart illustrating a print control procedure according to the present invention, and FIG. 3 illustrates an example of image output according to the present invention. FIG. In the figure, 1 is a data generation source, 2 is a printer device, 3 is an input interface unit, 4 is a CPU, 5 is a ROM 16 is an RA
M, 7a is a first output page buffer, 7b is a second output page buffer, 8 is a character pattern generator, and 9 is an output device. Figure 1 Figure 2

Claims (3)

[Claims] (1) Printing that has a plurality of page memories that expand document image data input by specifying a color from the host into different colors, and prints the color-specific document image data developed in these page memories in the specified color. The apparatus is characterized by comprising a development control means for inverting the document image data inputted with color specification and controlling the development of the background color data and the document image data, each of which becomes a background color, in different page memories. printing device. (2) The printing apparatus according to claim (1), wherein the development control means stops development of the background color data in the page memory based on an input background cancellation command. (3) The printing apparatus according to claim (1), wherein the development control means stops development of the background color data in the page memory based on the selected paper color.