Image forming method for forming toner image on recording medium

Patent metadata

Field	Value
Publication number	US-9316971-B2
Application number	US-201414339150-A
Country	US
Kind code	B2
Filing date	Jul 23, 2014
Priority date	Nov 1, 2010
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

A method for forming a toner image on a recording medium includes receiving a job, rotating a pressing rotary body in a predetermined direction of rotation, rotating a flexible endless belt disposed opposite the pressing rotary body to form a nip therebetween, turning on a belt heater disposed opposite to an inner circumferential surface of the flexible endless belt, conveying the recording medium bearing the toner image through the nip, turning off the belt heater for a predetermined first time period after the recording medium is discharged from the nip while the flexible endless belt and the pressing rotary body rotate, stopping the flexible endless belt and the pressing rotary body, turning on the belt heater when a predetermined second time period elapses after stopping the flexible endless belt and the pressing rotary body, and turning off the belt heater.

First claim

What is claimed is:

1. A method for forming a toner image on a recording medium, comprising:
receiving a printer job;
rotating a pressing rotary body in a predetermined direction of rotation;
rotating a flexible endless belt disposed opposite the pressing rotary body to form a nip therebetween in a direction counter to the direction of rotation of the pressing rotary body;
turning on a halogen heater disposed opposite an inner circumferential surface of the flexible endless belt to heat the flexible endless belt;
conveying the recording medium bearing the toner image through the nip;
turning off the halogen heater for a predetermined first time period after the recording medium is discharged from the nip while the flexible endless belt and the pressing rotary body rotate;
stopping the flexible endless belt and the pressing rotary body;
turning off the halogen heater for a predetermined second time period after stopping the flexible endless belt and the pressing rotary body regardless of a temperature of the flexible endless belt in a standby mode; and
turning off the halogen heater in an off mode.

2. The method according to claim 1 , further comprising:
activating a print preparation mode defining a state in which power is supplied to the halogen heater while at least one of the flexible endless belt and the pressing rotary body is rotated; and
turning on the halogen heater to maintain a predetermined temperature of the flexible endless belt or higher for the predetermined second time period after conveying the recording medium bearing the toner image through the nip in the standby mode.

3. The method according to claim 2 , further comprising turning off the halogen heater for the predetermined second time period in the standby mode at one of a time when receiving a copier job and a time when activating the print preparation mode.

4. The method according to claim 2 , further comprising turning on the halogen heater for the predetermined second time period in the standby mode at one of a time when receiving a copier job and a time when activating the print preparation mode.

5. The method according to claim 2 , further comprising:
turning off the halogen heater in the off mode at one of a time when receiving a signal to enter the off mode from a controller after activating the standby mode and a time when a predetermined operation is not performed in the standby mode to turn on the halogen heater for the predetermined second time period;
activating the off mode upon receipt of the signal to enter the off mode when receiving the printer job; and
activating the off mode when the predetermined operation is not performed in the standby mode to turn on the halogen heater for the predetermined second time period at one of a time when receiving a copier job and a time when activating the print preparation mode.

6. The method according to claim 2 , further comprising turning off the halogen heater for a predetermined third time period immediately after activating the standby mode to turn on the halogen heater for the predetermined second time period at one of a time when receiving a copier job and a time when activating the print preparation mode.

7. The method according to claim 6 , wherein the predetermined third time period is equivalent to the predetermined second time period in the standby mode when receiving the printer job.

8. The method according to claim 2 , further comprising turning on the halogen heater in the print preparation mode while turning off the halogen heater in the standby mode when one of a control panel, a reader, and a media tray of an image forming apparatus is activated.

Assignees

• Hase Takamasa
• Ogawa Tadashi
• Uchitani Takeshi
• Ueno Satoshi
• Kawata Teppei
• Saito Kazuya
• Yuasa Shuutaroh
• Yamaji Kensuke
• Ricoh Co Ltd

Inventors

• Hase Takamasa
• Ogawa Tadashi
• Uchitani Takeshi
• Ueno Satoshi
• Kawata Teppei
• Saito Kazuya
• Yuasa Shuutaroh
• Yamaji Kensuke

Classifications

• G03G15/5004

  Power supply control, e.g. power-saving mode, automatic power turn-off · CPC title

• G03G15/205 Primary

  specially for the mode of operation, e.g. standby, warming-up, error (G03G15/2046 takes precedence) · CPC title