Image forming apparatus, image forming method, and non-transitory recording medium that realize power savings during fixing

Patent metadata

Field	Value
Publication number	US-2021072678-A1
Application number	US-202016884102-A
Country	US
Kind code	A1
Filing date	May 27, 2020
Priority date	Sep 10, 2019
Publication date	Mar 11, 2021
Grant date	—

Abstract

According to one embodiment, an image forming apparatus includes a fixing device and a control unit. The fixing device forms an image represented by print data on an image forming medium by causing a part or all of a plurality of heat generating cells to generate heat, and by fixing a developer image corresponding to the print data on the surface of the image forming medium. The control unit corrects image data before correction so as to reduce the number of heat generating cells which are caused to generate heat among the plurality of heat generating cells based upon an arrangement of an image represented by the image data before correction and an arrangement of the plurality of heat generating cells, and uses image data after correction obtained by correcting the image data before correction as the print data.

First claim

What is claimed is:

1 . An image forming apparatus, comprising:
an image forming device configured to form a toner image on an image forming medium based on an image data; a fixing device configured to heat the toner image formed on an image forming medium by causing at least one of a plurality of heat generating cells to generate heat; and a controller configured to
correct the image data so as to reduce a number of heat generating cells caused to generate heat among the plurality of heat generating cells based upon an arrangement of an image represented by the image data before correction and an arrangement of the plurality of heat generating cells, and
use image data after correction obtained by correcting the image data before correction as the print data.

2 . The apparatus according to claim 1 , wherein
the controller corrects the image data before correction by reading character information from the image data before correction and by adjusting an arrangement of the character information.

3 . The apparatus according to claim 2 , wherein
the controller corrects the image data before correction by adjusting one or more of a size of a character, a space between characters, and a line space between characters with respect to the character information.

4 . The apparatus according to claim 1 , wherein
the controller corrects the image data before correction so that at least one blank portion in the image of the image data before correction becomes equal to or larger than a width of the at least one heat generating cell.

5 . The apparatus according to claim 1 , wherein
the controller corrects the image data before correction so that a same heat generating pattern is repeated for each of a predetermined number of the heat generating cells smaller than the plurality of heat generating cells in the arrangement of the plurality of heat generating cells.

6 . The apparatus according to claim 1 , wherein
the controller corrects the image data before correction so that a plurality of continuous pages in the image data before correction include the same heat generating pattern in the arrangement of the plurality of heat generating cells.

7 . The apparatus according to claim 1 , wherein
the controller corrects the image data before correction so as to add an image of a second page to an image of a first image in the image data before correction.

8 . The apparatus according to claim 1 , wherein
the controller corrects the image data before correction so as to eliminate an inclination when the image of the image data before correction includes the inclination from a direction perpendicular to the arrangement of the plurality of heat generating cells.

9 . An image forming method in an image forming apparatus including an image forming device configured to form a toner image on an image forming medium based on an image data, and a fixing device configured to heat the toner image formed on an image forming medium by causing at least one of a plurality of heat generating cells to generate heat, comprising:
correcting, by the image forming apparatus, the image data so as to reduce a number of heat generating cells caused to generate heat among the plurality of heat generating cells based upon an arrangement of an image represented by the image data before correction and an arrangement of the plurality of heat generating cells; and using, by the image forming apparatus, image data after correction obtained by correcting the image data before correction as the print data.

10 . The method according to claim 9 , further comprising:
correcting, by the image forming apparatus, the image data before correction by reading character information from the image data before correction and by adjusting an arrangement of the character information.

11 . The method according to claim 10 , further comprising:
correcting, by the image forming apparatus, the image data before correction by adjusting one or more of a size of a character, a space between characters, and a line space between characters with respect to the character information.

12 . The method according to claim 9 , further comprising:
correcting, by the image forming apparatus, the image data before correction so that at least one blank portion in the image of the image data before correction becomes equal to or larger than a width of the at least one heat generating cell.

13 . The method according to claim 9 , further comprising:
correcting, by the image forming apparatus, the image data before correction so that a same heat generating pattern is repeated for each of a predetermined number of the heat generating cells smaller than the plurality of heat generating cells in the arrangement of the plurality of heat generating cells.

14 . The method according to claim 9 , further comprising:
correcting, by the image forming apparatus, the image data before correction so that a plurality of continuous pages in the image data before correction include the same heat generating pattern in the arrangement of the plurality of heat generating cells.

15 . The method according to claim 9 , further comprising:
correcting, by the image forming apparatus, the image data before correction by adding an image of a second page to an image of a first image in the image data before correction.

16 . The method according to claim 9 , further comprising:
correcting, by the image forming apparatus, the image data before correction by eliminating an inclination when the image of the image data before correction includes the inclination from a direction perpendicular to the arrangement of the plurality of heat generating cells.

17 . A non-transitory storage medium storing a program for causing a computer, which generates print data to be printed by an image forming apparatus including an image forming device configured to form a toner image on an image forming medium based on an image data, and a fixing device configured to heat the toner image formed on an image forming medium by causing at least one of a plurality of heat generating cells to generate heat, to:
acquire image data before correction; correct the image data so as to reduce a number of heat generating cells caused to generate heat among the plurality of heat generating cells based upon an arrangement of an image represented by the image data before correction and an arrangement of the plurality of heat generating cells; and print, by the image forming apparatus, the print data by using image data after correction obtained by correcting the image data before correction as the print data.

18 . The non-transitory storage medium according to claim 17 , wherein the program further causing the computer to:
correct the image data before correction by reading character information from the image data before correction and by adjusting an arrangement of the character information.

19 . The non-transitory storage medium according to claim 18 , wherein the program further causing the computer to:
correct the image data before correction by adjusting one or more of a size of a character, a space between characters, and a line space between characters with respect to the character information.

20 . The non-transitory storage medium according to claim 17 , wherein the program further causing the computer to:
correct the image data before correction so that at least one blank portion in the image of the image data before correction becomes equal to or larger than a width of the at lea

Assignees

• Toshiba Tec Kk

Inventors

• Katsumata Satoshi

Classifications

• G03G15/2039 Primary

  with means for controlling the fixing temperature · CPC title