Image reading device, image processing system and image forming device
The present invention provides an image reading device, an image printing system and image forming device in which variation in light intensity caused by the continuous lighting time of an exposure lamp serving as a light source for reading an original is prevented, a read image is prevented from deteriorating and wasteful power consumption is prevented. The exposure lamp is turned off after a predetermined time has passed from a time when the original finishes passing through a reading position or the original is conveyed to a standby position. Alternatively, the exposure lamp is turned off without setting the predetermined time in a group-copy mode.
1. An image reading device comprising;
an original conveyor being configured to convey an original from a predetermined original tray to a reading position in which an image of the original is read;
a reading unit reading the image of the original being conveyed by irradiation using an exposure lamp;
a controller allowing conveyance of the original to the reading position and switching on and switching off the exposure lamp; and
a clock starting to measure time when the original finishes passing through the reading position,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before conveyance of the next original to the reading position is allowed.
2. The image reading device according to claim 1 , wherein
when conveyance of the next original to the reading position is allowed by the controller then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to an output of the image data.
3. An image processing system comprising;
an image reading device according to claim 1 ;
a storage device in which image data of the original read by the reading unit are stored; and
a node processing the image data stored in the storage device.
4. An image reading device comprising;
an original conveyor being configured to convey an original from a predetermined original tray to a standby position, to hold temporarily the original at the standby position and then to convey the original to a reading position in which an image of the original is read;
a reading unit reading the image of the original being conveyed by irradiation using an exposure lamp;
a controller allowing conveyance of the original to the reading position and switching on and switching off the exposure lamp; and
a clock starting to measure time when the original reaches the standby position,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before conveyance of the next original to the reading position is allowed.
5. The image reading device according to claim 4 , wherein
when conveyance of the next original to the reading position is allowed by the controller then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to an output of the image data.
6. An image processing system comprising;
an image reading device according to claim 4 ;
a storage device in which image data of the original read by the reading unit are stored; and
a node processing the image data stored in the storage device.
7. An image forming device comprising;
an original being configured to convey an original from a predetermined original tray to a reading position in which an image of the original is read;
a reading unit reading the image of the original being conveyed by irradiation using an exposure lamp;
a controller allowing conveyance of the original to the reading position and switching on and switching off the exposure lamp;
a clock starting to measure time when the original finishes passing through the reading position;
a storage storing image data of the original read by the reading unit; and
a processor processing the image data stored in the storage,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before conveyance of the next original to the reading position is allowed.
8. The image forming device according to claim 7 , wherein
when conveyance of the next original to the reading position is allowed by the controller then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to an output of the image data.
9. An image forming device comprising:
an original conveyor being configured to convey an original from a predetermined original tray to a standby position, to hold temporarily the original at the standby position and then to convey the original to a reading position in which an image of the original is read;
a reading unit reading the image of the original being conveyed by irradiation using an exposure lamp;
a controller allowing conveyance of the original to the reading position and switching on and switching off the exposure lamp;
a clock starting to measure time when the original is conveyed to the standby position;
a storage storing image data of the original read by the reading unit; and
a processor processing the image data stored in the storage,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before conveyance of the next original to the reading position is allowed.
10. The image forming device according to claim 9 , wherein
when conveyance of the next original to the reading position is allowed by the controller then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to an output of the image data.
11. An image reading device comprising:
an original conveyor being configured to covey automatically an original from a predetermined original tray;
a reading unit reading an image of the original being conveyed by irradiation using an exposure lamp;
a controller switching on and switching off the exposure lamp;
an output unit outputting read image data to be stored in a storage device;
a clock starting to measure time when the output of the image data is completed; and
an output requesting unit requesting the output of the image data,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before an output of the image data of the next original is requested by the output requesting unit.
12. The image reading device according to claim 11 , wherein
when the output of the image data is requested by the output requesting unit, then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to the output of the image data.
13. An image processing system comprising;
an image reading device according to claim 11 ;
a storage device in which image data output from the image reading device is stored; and
a node processing the image data stored in the storage device.
14. An image reading device comprising:
an original conveyor being configured to convey automatically an original from a predetermined original tray;
a reading unit reading an image of the original being conveyed by irradiation using an exposure lamp;
a controller switching on and switching off the exposure lamp;
an output unit outputting read image data to be stored in a storage device;
a clock starting to measure time when the original gets to a standby state so as to be read; and
an output requesting unit requesting the output of the image data,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before an output of the image data of the next original is requested by the output requesting unit.
15. The image reading device according to claim 14 , wherein
when the output of the image data is requested by the output requesting unit, then the the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to the output of the image data.
16. An image processing system comprising;
an image reading device according to claim 14 ;
a storage device in which image data output from the image reading device is stored; and
a node processing the image data stored in the storage device.
17. An image forming device comprising;
an original conveyor being configured to convey automatically an original from a predetermined original tray;
a reading unit reading the image of the original being conveyed by irradiation using an exposure lamp;
an output unit outputting read image data;
an output requesting unit requesting the output of the image data;
a controller switching on and switching off of the exposure lamp;
a clock starting to measure time when the output of the image data is completed;
a storage storing the image data output from the output unit; and
a processor processing the image data stored in the storage,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before an output of the image data of the next original is requested by the output requesting unit.
18. The image reading device according to claim 17 , wherein
when the output of the image data is requested by the output requesting unit, then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to an output of the image data.
19. An image forming device comprising:
an original conveyor being configured to convey automatically an original from a predetermined original tray;
a reading unit reading the image of the original being conveyed by irradiation using an exposure lamp;
an output unit outputting read image data;
an output requesting unit requesting the output of the image data;
a controller switching on and switching off the exposure lamp;
a clock starting to measure time when the original gets to a standby state so as to be read;
a storage storing the image data output from the output unit; and
a processor processing the image data stored in the storage,
the controller switching off the exposure lamp when the reading unit continuously reads a plurality of originals, when one of the plurality of originals is at the reading position, and when a time measured by the clock reaches a predetermined time before an output of the image data of the next original is requested by the output requesting unit.
20. The image reading device according to claim 19 , wherein
when the output of the image data is requested by the output requesting unit, then the controller switches on the exposure lamp if the exposure lamp is off and obtains reference data for shading correction prior to an output of the image data.