Method and apparatus for image forming capable of effectively performing color image position adjustment
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G03G-021/16
G03G-015/01
B41J-002/385
G01D-015/06
출원번호
US-0732341
(2003-12-11)
우선권정보
JP-0002482 (2001-01-10)
발명자
/ 주소
Yamanaka, Tetsuo
Kobayashi, Kazuhiko
Shinohara, Tadashi
Hosokawa, Jun
출원인 / 주소
Ricoh Company, Ltd.
대리인 / 주소
Oblon, Spivak, McClelland, Maier &
인용정보
피인용 횟수 :
24인용 특허 :
6
초록▼
An image forming apparatus including a plurality of detachable image forming devices each for forming a color image, an image carrying device for carrying the color images sequentially overlaid into a single color image, an exchange detecting device for detecting an exchange of the plurality of deta
An image forming apparatus including a plurality of detachable image forming devices each for forming a color image, an image carrying device for carrying the color images sequentially overlaid into a single color image, an exchange detecting device for detecting an exchange of the plurality of detachable image forming devices, a test pattern reading device for reading a predetermined test pattern formed by the plurality of detachable image forming devices on the image carrying device, and a controller for instructing the plurality of detachable image forming devices to form the predetermined test pattern on the image carrying device when the exchange detecting device detects the exchange and perform a color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device.
대표청구항▼
1. An image forming apparatus comprising:a plurality of detachable image forming devices each configured to form a color image; an image carrying device configured to carry the color images sequentially overlaid into a single color image; an exchange detecting device configured to detect an exchange
1. An image forming apparatus comprising:a plurality of detachable image forming devices each configured to form a color image; an image carrying device configured to carry the color images sequentially overlaid into a single color image; an exchange detecting device configured to detect an exchange of the plurality of detachable image forming devices; a test pattern reading device configured to read a predetermined test pattern formed by the plurality of detachable image forming devices on the image carrying device; and a controller configured to instruct the plurality of detachable image forming devices to form the predetermined test pattern on the image carrying device when the exchange detecting device detects the exchange and perform a color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device. 2. An image forming apparatus as defined in claim 1, wherein the exchange detecting device includes a plurality of actuators positioned in the plurality of detachable image forming devices, respectively, and a detecting device configured to detect the plurality of actuators, wherein the plurality of actuators are configured to move to positions which are detectable by the detecting device, respectively.3. An image forming apparatus as defined in claim 1, wherein the plurality of detachable image forming devices comprises four detachable image forming devices which have magenta, cyan, yellow, and black color toners, respectively.4. An image forming apparatus as defined in claim 3, wherein the predetermined test pattern includes patterns of the magenta, cyan, yellow, and black color toners to be sequentially formed with a slight distance between two immediately adjacent patterns.5. An image forming apparatus as defined in claim 1, further comprising an optical writing device configured to generate a writing beam modulated according to image data, wherein the plurality of detachable image forming devices are configured to form the color images in accordance with the writing beam.6. An image forming apparatus as defined in claim 5, wherein the color image position adjustment adjusts the optical writing device to justify positions of the color images formed on the image carrying device via the plurality of detachable image forming devices.7. An image forming apparatus comprising:a plurality of detachable image forming devices each configured to form a color image; image carrying means for carrying the color images sequentially overlaid into a single color image; exchange detecting means for detecting an exchange of the plurality of detachable image forming devices; reading means for reading a predetermined test pattern formed by the plurality of detachable image forming devices on the image carrying means; first controlling means for instructing the plurality of detachable image forming devices to form the predetermined test pattern on the image carrying means when the exchange detecting means detects the exchange; and second controlling means for instructing the plurality of detachable image forming devices to perform a color image position adjustment based on readings of the predetermined test pattern by the reading means. 8. An image forming apparatus as defined in claim 7, wherein the exchange detecting means comprises a plurality of actuating devices provided in the plurality of detachable image forming devices, respectively, and detecting means for detecting the plurality of actuating devices, wherein the plurality of actuating devices are configured to move to positions detectable by the detecting means.9. An image forming apparatus as defined in claim 7, wherein the plurality of detachable image forming devices comprises four detachable image forming devices which have magenta, cyan, yellow, and black color toners, respectively.10. An image forming apparatus as defined in claim 9, wherein the predetermined test pattern includes patterns of the magenta, cyan, yellow and black color toners to be sequentially formed with a slight distance between two immediately adjacent patterns.11. An image forming apparatus as defined in claim 7, further comprising optical writing means for generating a writing beam modulated according to image data, wherein the plurality of detachable image forming devices are configured to form the color images in accordance with the writing beam.12. An image forming apparatus as defined in claim 11, wherein the color image position adjustment adjusts the optical writing means to justify positions of the color images formed on the image carrying means via the plurality of detachable image forming devices.
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이 특허에 인용된 특허 (6)
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Yamanaka, Tetsuo; Kobayashi, Kazuhiko; Shinohara, Tadashi; Hosokawa, Jun, Method and apparatus for image forming capable of effectively performing color image position adjustment.
Yamanaka, Tetsuo; Kobayashi, Kazuhiko; Shinohara, Tadashi; Hosokawa, Jun, Method and apparatus for image forming capable of effectively performing color image position adjustment.
Yamanaka, Tetsuo; Kobayashi, Kazuhiko; Shinohara, Tadashi; Hosokawa, Jun, Method and apparatus for image forming capable of effectively performing color image position adjustment.
Yamanaka,Tetsuo; Kobayashi,Kazuhiko; Shinohara,Tadashi; Hosokawa,Jun, Method and apparatus for image forming capable of effectively performing color image position adjustment.
Yamanaka,Tetsuo; Kobayashi,Kazuhiko; Shinohara,Tadashi; Hosokawa,Jun, Method and apparatus for image forming capable of effectively performing color image position adjustment.
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