Image forming apparatus

Patent metadata

Field	Value
Publication number	US-9900457-B2
Application number	US-201615292388-A
Country	US
Kind code	B2
Filing date	Oct 13, 2016
Priority date	Oct 14, 2015
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

An image forming apparatus has a power-saving mode in which the image forming apparatus is switched from a normal power consumption state to a low power consumption state where less energy is supplied than in the normal power consumption state. This image forming apparatus includes a detection unit configured to detect an operating state of the image forming apparatus, and a memory unit configured to store a detection result by the detection unit. In the power-saving mode, the detection unit detects an operating state of the image forming apparatus, and the memory unit stores a detection result by the detection unit. When the image forming apparatus returns from the low power consumption state in the power-saving mode to the normal power consumption state, control of a return operation for the image forming apparatus from the power-saving mode is executed, based on the detection result by the detection unit stored in the memory unit.

First claim

What is claimed is:

1. An image forming apparatus having a power-saving mode in which the image forming apparatus is switched from a predetermined normal power consumption state to a low power consumption state where less energy is supplied than in the normal power consumption state, the image forming apparatus comprising:
a control section;
an opening closing member that is openable and closable; and
an opening closing member detection switch that detects whether the opening closing member is opened or closed, wherein
when the image forming apparatus returns from the low power consumption state in the power-saving mode to the normal power consumption state after the opening closing member detection switch detects and opening action or a closing action of the opening closing member in the power-saving mode, the control section controls an initial operation for a movable component of the image forming apparatus, and
wherein, when the image forming apparatus returns from the low power consumption state in the power-saving mode to the normal power consumption state after the opening closing member detection switch does not detect an opening action or a closing action of the opening closing member in the power-saving mode, the control section does not control the initial operation for the movable component.

2. The image forming apparatus according to claim 1 ,
wherein the opening closing member detection switch detects an opening action or a closing action of the opening closing member in the normal power consumption state, and
wherein the control section controls the initial operation if a detection result by the opening closing member detection switch indicates that detection of the opening action of the opening closing member is followed by detection of the closing action of the opening closing member.

3. The image forming apparatus according to claim 1 , further comprising:
a sheet placing portion that places one or more sheets; and
a sheet feeding apparatus including a pick-up roller, the pick-up roller being configured to be capable of moving up and down and to feed the one or more sheets placed on the sheet placing portion, one by one, by moving down from a raised position,
wherein the initial operation is an operation for raising the pick-up roller at the raised position.

4. The image forming apparatus according to claim 3 , further comprising an image reading device having a moving document reading configuration in which an image on a document, as the sheet, is read while the document is caused to move,
wherein the image reading device comprises a document feeding device having the pick-up roller, and
wherein the opening closing member is openable from and closable on a document feeding device main body, and is equipped with the pick-up roller.

5. The image forming apparatus according to claim 3 , further comprising an image reading device having a moving document reading configuration in which an image on a document is read while the document, as the sheet, is caused to move, and a stationary document reading configuration in which an image of a document is read while the document, as the sheet, is placed on a document placement stand,
wherein the image reading device comprises a document feeding device having the pick-up roller, and a document reading device having the document placement stand, and
wherein the opening closing member is the document feeding device which is openable from and closable on the document reading device and, when closed, which holds down the document placed on the document placement stand.

Assignees

• Sharp Kk

Inventors

• Morimoto Yasumasa
• Hiro Hideyuki

Classifications

• H04N1/00058

  using a separate apparatus · CPC title

• H04N1/00891

  Switching on or off, e.g. for saving power when not in use (H04N1/00896 takes precedence) · CPC title

• H04N2201/0094

  Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception · CPC title

• H04N1/00007

  relating to particular apparatus or devices · CPC title

• H04N1/00551

  Top covers or the like · CPC title