US 2016/0238979 A1 · IMAGE FORMING APPARATUS

Abstract

An image forming apparatus includes an image forming portion; a usage amount calculating portion; a usage rate calculating portion; and a printable sheet number calculating portion. The image forming portion is configured to form an image on a printing medium using a color agent. The usage calculating portion is configured to calculate a usage amount of the color agent in the image forming portion. The usage rate calculating portion is configured to calculate a usage rate of the color agent on the printing medium according to the usage amount, and a medium size and a printed sheet number of the printing medium on which the image forming portion forms the image. The printable sheet number calculating portion is configured to calculate a printable sheet number that the image forming portion is capable of printing using a remaining color agent according to the usage amount and the usage rate.

Claims17

Dependent claims

An image forming apparatus comprising:

an image forming portion configured to form an image on a printing medium using a color agent;
an operation portion configured to set a medium size;
a usage amount calculating portion configured to calculate a usage amount of the color agent in the image forming portion;
a usage rate calculating portion configured to calculate a usage rate of the color agent on the printing medium according to the usage amount, the medium size specified with the operation portion, and a printed sheet number of the printing medium on which the image forming portion forms the image;
and
a printable sheet number calculating portion configured to calculate a printable sheet number that the image forming portion is capable of printing using a remaining color agent according to the usage amount and the usage rate.

3 more elements

Dependencies are inferred from the claim text.

Image forming apparatus

Life of this patent

Image forming apparatus

Life of this patent

Abstract

Claims17