# US 10,484,563 B2 · Image forming apparatus, and method for controlling image forming apparatus

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- Number: US 10,484,563 B2
- Document ID: US10484563B2
- Status: Granted
- Kind: B2
- Application number: 15/912,198
- Filed: 2018-03-05
- Published: 2018-07-12
- Granted: 2019-11-19
- Earliest claimed: 2014-05-23
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Atsushi Hikichi
- Web page: https://patentgrep.com/patent/US10484563B2

## CPC

- H04N 1/00896: {using a low-power mode, e.g. standby}
- B41J 29/38: Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- G03G 15/5004: {Power supply control, e.g. power-saving mode, automatic power turn-off}
- G06F 1/3284: {Power saving in printer}
- H04N 1/00474: {outputting a plurality of functional options, e.g. scan, copy or print}
- H04N 2201/0094: Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- Y02D 30/50: in wire-line communication networks, e.g. low power modes or reduced link rate
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

An image forming apparatus that shifts to a power saving state, includes a printing unit, a printing control unit configured to control the printing unit, and a power supply unit configured to supply power to the printing control unit when the image forming apparatus returns from the power saving state, wherein the printing control unit, to which power is supplied by the power supply unit, executes initialization of the printing unit in a case where a printing screen for performing a printing function is set as a initial screen to be displayed when the image forming apparatus returns from the power saving state, and wherein the printing control unit does not execute initialization of the printing unit in a case where a selection screen for selecting the printing function is set as a initial screen to be displayed when the image forming apparatus returns from the power saving state.

## Claims

### Claim 1

A printing apparatus, comprising:
a printer that includes one or more motors;
a print controller configured to drive the one or more motors;
a power controller configured to supply power to the print controller and stop power to the print controller;
a controller configured to select one screen among a plurality of screens as an initial screen to be displayed according to a sleep return instruction; and
a display,
wherein, in accordance with the sleep return instruction, (1) the display displays the one screen selected by the controller, (2) the power controller supplies power to the print controller, and (3) the print controller drives at least one of the one or more motors or not on a basis of a type of the one screen selected by the controller.

### Claim 2 (depends on 1)

The printing apparatus according to claim 1,
wherein, in a case where a predetermined screen related to a print function is selected as the initial screen, in accordance with the sleep return instruction, the display displays the predetermined screen as the initial screen, the power controller supplies power to the print controller, and the print controller drives at least one of the one or more motors.

### Claim 3 (depends on 2)

The printing apparatus according to claim 2,
wherein the predetermined screen related to the print function is at least one of a screen for setting copy conditions and a screen for selecting data to be printed.

### Claim 4 (depends on 1)

The printing apparatus according to claim 1,
wherein the power controller outputs a predetermined signal to the print controller or not on a basis of the type of the one screen selected by the controller in accordance with the sleep return instruction, and
wherein the print controller drives at least one of the one or more motors in accordance with status of the predetermined signal.

### Claim 5 (depends on 4)

The printing apparatus according to claim 4, further comprising:
a power supply source configured to output power to the print controller; and
a switch provided between the power supply source and the print controller,
wherein, in accordance with the sleep return instruction, the power controller
(1) outputs the predetermined signal to the print controller or not based on the type of the one screen selected by the controller, and
(2) turns on the switch.

### Claim 6 (depends on 5)

The printing apparatus according to claim 5,
wherein the power controller turns on the switch after outputting the predetermined signal to the print controller.

### Claim 7 (depends on 1)

The printing apparatus according to claim 1,
wherein a power system for power supply to the controller is different from a power system for the power supply to the print controller.

### Claim 8 (depends on 1)

The printing apparatus according to claim 1,
wherein the motor is any of a motor for moving a polygon mirror, a motor for moving a drum, and a motor for moving a roller.

### Claim 9 (depends on 1)

The printing apparatus according to claim 1,
wherein, in accordance with a power on instruction, the display displays the one screen selected by the controller, the power controller supplies power to the print controller and the print controller drives at least one of the one or more motors regardless of the one screen selected by the controller.

### Claim 10 (depends on 1)

The printing apparatus according to claim 1, further comprising:
a scanner that includes one or more motors; and
a scan controller configured to drive the one or more motors of the scanner,
wherein the power controller further supplies power to the scan controller and stops power to the scan controller,
wherein, in accordance with a sleep return instruction, (1) the display displays the one screen selected by the controller, (2) the power controller supplies power to the scan controller, and (3) the scan controller drives the at least one of the one or more motors or not on a basis of the type of the one screen selected by the controller.

### Claim 11

A reading apparatus, comprising:
a scanner that includes one or more motors; and
a scan controller configured to drive the one or more motors;
a power controller configured to supply power to the scan controller and stop power to the scan controller;
a controller configured to select one screen among a plurality of screens as an initial screen to be displayed according to a sleep return instruction; and
a display,
wherein, in accordance with the sleep return instruction, (1) the display displays the one screen selected by the controller, (2) the power controller supplies power to the scan controller, and (3) the scan drives at least the one or more motors or not on a basis of a type of the one screen selected by the controller.

### Claim 12 (depends on 11)

The reading apparatus according to claim 11,
wherein, in a case where a predetermined screen related to a scan function is selected as the initial screen, in accordance with the sleep return instruction, the display displays the predetermined screen as the initial screen, the power controller supplies power to the scan controller, and the scan controller drives at least one of the one or more motors.

### Claim 13 (depends on 12)

The reading apparatus according to claim 12,
wherein the predetermined screen related to the scan function is at least one of a screen for selecting a location for storing an image of a document scanned and a screen for specifying a destination of an image of a document scanned.

### Claim 14 (depends on 11)

The reading apparatus according to claim 11,
wherein the power controller outputs a predetermined signal to the scan controller or not on a basis of the type of the one screen selected by the controller in accordance with the sleep return instruction, and
wherein the scan controller drives at least one of the one or more motors in accordance with status of the predetermined signal.

### Claim 15 (depends on 14)

The reading apparatus according to claim 14, further comprising:
a power supply source configured to output power to the scan controller; and
a switch provided between the power supply source and the scan controller,
wherein, in accordance with the sleep return instruction, the power controller
(1) outputs the predetermined signal to the scan controller or not based on the type of the one screen selected by the controller, and
(2) turns on the switch.

### Claim 16 (depends on 15)

The reading apparatus according to claim 15,
wherein the power controller turns on the switch after outputting the predetermined signal to the scan controller.

### Claim 17 (depends on 11)

The reading apparatus according to claim 11,
wherein a power system for power supply to the setting unit is different from a power system for the power supply to the scan control unit.

### Claim 18 (depends on 11)

The reading apparatus according to claim 11,
wherein the motor is any of a motor for conveying a document or a motor for adjusting a home position of a scanner head.

### Claim 19 (depends on 11)

The reading apparatus according to claim 11,
wherein, in accordance with a power on instruction, the display displays the one screen selected by the controller, the power controller supplies power to the scan controller and the scan controller drives at least one of the one or more motors regardless of the one screen selected by the controller.

### Claim 20 (depends on 11)

The reading apparatus according to claim 11,
a printer that includes one or more motors;
a print controller configured to drive the one or more motors of the printer,
wherein the power controller further supplies power to the print controller and stops power to the print controller,
wherein, in accordance with a sleep return instruction, (1) the display displays the one screen selected by the controller, (2) the power controller supplies power to the print controller, and (3) the print controller drives at least one of the one or more motors or not on a basis of the type of the one screen selected by the controller.