EP0624025A2
Expired / Lapsed
EP
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Recording apparatus
Assignee: Canon Inc
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Filing: 1989-09-26
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Granted: —
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Expires: 2009-09-26
Abstract
Abstract An image processing apparatus (800) for controlling an image forming apparatus (700) having means (752,753,756) for scanning a photosensitive body (711) with light modulated by image data and means (755) for detecting the scanning light to determine the timing for beginning modulation of the light, characterised in that said image forming apparatus further comprises: means (766) for controlling relative scanning speed between the light and the body to vary the recording resolution; and means (503) for varying the timing for beginning modulation of the light for a main scan line in accordance with the recording resolution.
Inventors
- 👤 Makoto Abe
- 👤 Kaoru Seto
- 👤 Takashi Kawana
- 👤 Atsushi Kashihara
- 👤 Hiroshi Mano
- 👤 Tetsuo Saito
- 👤 Hiroshi Sasame
- 👤 Michio Itoh
- 👤 Masaharu Ohkubo
- 👤 Hiromichi Yamada
- 👤 Masaki Ojima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 04:37
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1204; G06K15/1223; H04N1/04; H04N1/0402; H04N1/0408; H04N1/0411; H04N1/042; H04N1/0443; H04N1/0446; H04N1/40025; H04N1/40037; H04N1/4005; H04N1/405; H04N1/4051; H04N1/4055; H04N1/113; H04N1/1135; H04N1/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
An image processing apparatus (800) for controlling an image forming apparatus (700) having means (752, 753, 756) for scanning a photosensitive body (711) with light modulated by image data and means (755) for detecting the scanning light to determine the timing for beginning modulation of the light, characterised in that said image forming apparatus further comprises: means (766) for controlling relative scanning speed between the light and the body to vary the recording resolution; and means (503) for varying the timing for beginning modulation of the light for a main scan line in accordance with the recording resolution.
Claim 2
Dependent Claim
33 words
Apparatus according to claim 1, wherein said image forming apparatus further comprises means (502) for masking the image data till the timing for beginning modulation of the light for a main scan line.
Claim 3
Dependent Claim
37 words
Apparatus according to claim 1 or 2, wherein said image forming apparatus further comprises means (504) for varying timing for completion of modulation of the light for the main scan line in accordance with the recording resolution.
Claim 4
Dependent Claim
33 words
Apparatus according to claim 1, wherein said image forming apparatus further comprises means for receiving a command from an external apparatus, and means for setting the recording resolution in accordance with the command.
Claim 5
Dependent Claim
48 words
Apparatus according to any preceding claim, wherein said light scanning means comprises means for scanning the light in a main scan direction and means for scanning the light in a sub-scan direction, and the recording resolution is changed by changing the scanning speed in the main scan direction.
Claim 6
Dependent Claim
51 words
Apparatus according to any one of claims 1 to 4, wherein said light scanning means comprises means for scanning the light in a main scan direction and means for scanning the light in a sub-scan direction, and the recording resolution is changed by changing the scanning speed in the sub-scan direction.
Claim 7
Dependent Claim
94 words
Apparatus (800) for controlling an image forming apparatus (700) having means (752, 753, 756) for scanning a photosensitive body (711) with light modulated by image data and means (766) for controlling relative scanning speed between the light and the body to vary recording resolution in accordance with a command sent from an image data source, characterised in that said image processing apparatus sets a command receivable period in accordance with an operating state of the image forming apparatus, and invalidates the command which is received during a period other than the command receivable period.
Claim 8
Dependent Claim
26 words
Apparatus according to claim 7, wherein the command receivable period implies a period during which said image forming apparatus is not in a state of printing.
Claim 9
Dependent Claim
33 words
Apparatus according to claim 7, wherein said image forming apparatus further comprises means for receiving a command from an external apparatus, and means for setting the recording resolution in accordance with the command.
Claim 10
Dependent Claim
49 words
Apparatus according to claim 7 or 9, wherein said light scanning means comprises means for scanning the light in a main scan direction and means for scanning the light in a sub-scan direction, and the recording resolution is changed by changing the scan speed in the main scan direction.
Claim 11
Dependent Claim
48 words
Apparatus according to claim 7 or 9, wherein said light scanning means comprises means for scanning the light in a main scan direction and means for scanning the light in a sub-scan direction, and the recording resolution is changed by changing the scan speed in the sub-scan direction.
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