Image forming apparatus

• US 20080089709A1
• Filed: 09/27/2007
• Published: 04/17/2008
• Est. Priority Date: 10/17/2006
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Higashi, Shinya
• Granted Patent: US 7,769,312 B2
• Time in Patent Office: Days
• US Class Current: 399/79
• CPC Class Codes: G03G 15/5087 for receiving image data
• CPC Class Codes: G03G 21/02 Counting the number of copies; Billing

Abstract

One embodiment of the present invention is provided with an image information storage unit, an image information processing unit, an actual image forming unit, an image information control unit that controls transfer of image information between each of the units, a power supply control unit, a cost information management unit that holds basic cost information prescribing power costs dependent on a usage time and calculates unit cost information, and an image processing time management unit that calculates a processing time required for image output jobs, wherein the image information control unit sets the execution timings of the image output jobs based on the basic cost information so that a total of image output costs of the image output jobs stored in the image information storage unit is lowest.

Claims

1. An image forming apparatus, comprising:

an image information storage unit that stores inputted image information as original image information,

an image information processing unit that performs a process of converting the image information stored in the image information storage unit to outputable image information,

an actual image forming unit that forms on a physical medium the outputable image information that has undergone the process of conversion by the image information processing unit,

an image information control unit that controls transfer of image information between each of the units,

a power supply control unit that controls a state of power supply of each of the units as required,

a cost information management unit that holds basic cost information prescribing power costs dependent on a usage time and calculates unit cost information of an arbitrary time, and

an image processing time management unit that calculates a processing time required for image output jobs in which image forming is to be performed by the image information processing unit and the actual image forming unit based on the image information stored in the image information storage unit,

wherein, in relation to execution timings of image output jobs by the actual image forming unit, the image information control unit sets the execution timings of the image output jobs based on the basic cost information so that a total of image output costs of all target image output jobs stored in the image information storage unit is lowest.

2. The image forming apparatus according to claim 1, wherein, in relation to execution timings of image output jobs by the actual image forming unit, the image information control unit calculates a total of image output costs of an arbitrary time for the image output jobs of all the image information based on a processing time of the image output jobs of all target image information stored in the image information storage unit calculated by the image processing time management unit and unit cost information calculated by the cost information management unit, and sets a time at which the total of the image output costs is lowest as the execution timings of the image output jobs.

3. The image forming apparatus according to claim 1 or 2, wherein the image information control unit resets at a fixed interval the execution timings of the image output jobs of all target image information stored in the image information storage unit when one or a plurality of sets of image information have been additionally stored in the image information storage unit before an execution timing of image output jobs that has been set arrives.

4. The image forming apparatus according to claim 1 or 2, wherein the image information control unit resets the execution timings of the image output jobs of all target image information stored in the image information storage unit each time new image information is additionally stored in the image information storage unit before an execution timing of image output jobs that has been set arrives.

5. The image forming apparatus according to claim 1, wherein when new image information has been received during processing of image output jobs in a nighttime rates time period in nighttime mode, the image information control unit executes an image output job of the received image information subsequently after completion of the image output jobs currently being processed.

6. The image forming apparatus according to claim 1, wherein when new image information has been received during processing of image output jobs in a nighttime rates time period in nighttime mode, the image information control unit executes an image output job of the received image information after nighttime mode is canceled and a daytime warm up is performed.

7. The image forming apparatus according to claim 1 or 2, wherein when there is a large quantity of image output jobs of image information stored in the image information storage unit, the image information control unit divides the image output jobs into image processing jobs, in which image information stored in the image information storage unit undergoes a conversion process by the image information processing unit into outputable image information, and image forming jobs, in which the outputable image information is formed onto a physical medium by the actual image forming unit, then calculates costs required for the image processing jobs and the image forming jobs respectively and sets execution timings of the jobs respectively so that a total cost incurred in processing is lowest.

8. The image forming apparatus according to claim 1, wherein when there is a large quantity of image output jobs of a plurality of sets of image information stored in the image information storage unit during a nighttime mode period, the image output jobs are executed within a remaining time of the nighttime mode, and when there is a small quantity of the image output jobs, the image output jobs are executed in a daytime time period.

9. The image forming apparatus according to claim 1, wherein when the image forming apparatus is an apparatus having a facsimile reception function, the image information control unit transitions to nighttime mode after having continuously executed image output jobs of image information remaining in the image information storage unit when a timing for transitioning to the nighttime mode arrives during execution of the image output jobs of image information stored in the image information storage unit.

10. The image forming apparatus according to claim 1, wherein when the image forming apparatus is a printer apparatus, the image information control unit shuts off power after having continuously executed image output jobs of image information remaining in the image information storage unit when a timing for transitioning to nighttime mode arrives during execution of the image output jobs of image information stored in the image information storage unit.