US5142304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus having an automatic scan density control feature
Assignee: Canon Inc
•
Filing: 1990-08-07
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Granted: 1992-08-25
•
Expires: 2010-08-07
Abstract
Abstract A recorder has recording apparatus for recording data sent from a data source on a record medium at a selected one of a plurality of recording densities, and control apparatus for sending a signal indicating a record ready status of the recorder to the data source during the switching of the recording density in the recording apparatus. When the control apparatus receives the recording density switching command during the record operation, it holds the command, and after the end of the recording operation, it controls the recording apparatus in accordance with the held command to switch the recording density.
Inventors
- 👤 Kaoru Sato
- 👤 Takashi Soya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:54
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; B; B41; B41B; B41B19/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
82 words
A recorder comprising: record means capable of performing a recording operation at a plurality of recording dot densities; and control means for receiving data sent from an external data source and processing the data to output same to said record means, said control means being capable of sending a signal indicating a record ready status of the recorder to the data source and receiving data sent from the data source during the switching of the recording dot density of said record means.
Claim 2
Dependent Claim
82 words
A recorder comprising: record means capable of performing a recording operation at a plurality of recording dot densities; and control means for receiving data sent from an external data source and processing the data to output same to said record means, said control means being capable of sending a signal indicating a record ready status of the recorder to the data source and receiving data sent from the data source during the switching of the recording dot density of said record means.
Claim 3
Dependent Claim
50 words
A recorder according to claim 1, wherein said record means includes laser beam generation means for generating a laser beam, a polygon mirror for scanning the laser beam, and polygon mirror drive means for controlling a rotating speed of said polygon mirror in accordance with the selected recording dot density.
Claim 4
Dependent Claim
60 words
A recorder according to claim 1, wherein said control means receives a recording dot density switching command during the record operation, said control means holds the received recording dot density switching command, and after the end of the record operation, controls said record means in accordance with the held recording dot density switching command to switch the recording dot density.
Claim 5
Dependent Claim
71 words
A recorder according to claim 1, wherein when said control means receives the recording dot density switching command during the reception of a start of record command sent from said data source, said control means holds the received recording dot density switching command, and after the end of the record operation, controls said record means in accordance with the held recording dot density switching command to switch the recording dot density.
Claim 6
Dependent Claim
47 words
A recorder according to claim 2, wherein said control means receives the recording dot density switching command sent from said data source and controls said polygon mirror drive means in accordance with the received recording density switching command to switch the rotating speed of the polygon mirror.
Claim 7
Dependent Claim
118 words
A recorder comprising: record means for recording record data, said record means being capable of performing a recording operation at a plurality of recording dot densities; and control means for receiving record data and recording dot density designation data sent from an external data source and processing the data to output same to said record means, and for controlling the recording dot density of said record means on the basis of the recording dot density designation data, said control means being capable of sending a signal indicating a record ready status of the recorder to said data source and receiving data sent from the data source, during the switching of the recording dot density of said record means.
Claim 8
Dependent Claim
118 words
A recorder comprising: record means for recording record data, said record means being capable of performing a recording operation at a plurality of recording dot densities; and control means for receiving record data and recording dot density designation data sent from an external data source and processing the data to output same to said record means, and for controlling the recording dot density of said record means on the basis of the recording dot density designation data, said control means being capable of sending a signal indicating a record ready status of the recorder to said data source and receiving data sent from the data source, during the switching of the recording dot density of said record means.
Claim 9
Dependent Claim
50 words
A recorder according to claim 6, wherein said record means includes laser beam generation means for generating a laser beam, a polygon mirror for scanning the laser beam, and polygon mirror drive means for controlling a rotating speed of the polygon mirror in accordance with the designated recording dot density.
Claim 10
Dependent Claim
66 words
A recorder according to claim 7, wherein when said control means receives the recording dot density designation data duringn the record operation, said control means holds the received recording dot density designation data, and after the end of the record operation, controls said polygon mirror drive means in accordance with the held recording dot density designation data to switch the rotating speed of the polygon mirror.
Claim 11
Dependent Claim
76 words
A recorder according to claim 7, wherein when said control means receives the recording dot density designation data during the reception of a start of record command sent from said data source, said control means holds the received recording dot density designation data, and after the end of the record operation, controls said polygom mirror drive means in accordance with the held recording dot density designation data to switch the rotating speed of the polygon mirror.
Claim 12
Dependent Claim
31 words
A recorder according to claim 6, wherein the record data is image information, and the recording dot density designation data is sent to said control means in a form of command.
Claim 13
Dependent Claim
105 words
A recorder comprising: record means capable of performing a recording operation at a plurality of recording dot densities, said record means outputting a recording period signal; control means for receiving data sent from an external data source and processing the data to output same to said record means, said control means outputting the processed data after sending a record start signal; and inhibit signal output means for outputting to said record means an inhibit signal for inhibiting the switching of the recording dot density on the basis of the recording period signal from said record means and the record start signal from said control means.
Claim 14
Dependent Claim
105 words
A recorder comprising: record means capable of performing a recording operation at a plurality of recording dot densities, said record means outputting a recording period signal; control means for receiving data sent from an external data source and processing the data to output same to said record means, said control means outputting the processed data after sending a record start signal; and inhibit signal output means for outputting to said record means an inhibit signal for inhibiting the switching of the recording dot density on the basis of the recording period signal from said record means and the record start signal from said control means.
Claim 15
Dependent Claim
54 words
A recorder according to claim 11, wherein said record means comprises: laser beam generation means for generating a laser beam; a rotating polygon mirror for scanning the laser beam; and polygon mirror drive means for controlling the switching of a rotation speed of the polygon mirror in accordance with a set recording dot density.
Claim 16
Dependent Claim
127 words
A recorder comprising: record means capable of performing a recording operation at a plurality of recording dot densities, said record means outputting a recording period signal; control means for receiving the data sent from an external data source and processing the data to output same to said record means, said control means outputting the processed data after sending a record start signal; recording dot density designation signal output means for outputting a recording dot density designation signal for designating a recording dot density; and recording density control signal output means for outputting a recording dot density control signal for controlling the recording dot density of said record means, on the basis of the recording period signal, the record start signal and the recording dot density designation signal.
Claim 17
Dependent Claim
127 words
A recorder comprising: record means capable of performing a recording operation at a plurality of recording dot densities, said record means outputting a recording period signal; control means for receiving the data sent from an external data source and processing the data to output same to said record means, said control means outputting the processed data after sending a record start signal; recording dot density designation signal output means for outputting a recording dot density designation signal for designating a recording dot density; and recording density control signal output means for outputting a recording dot density control signal for controlling the recording dot density of said record means, on the basis of the recording period signal, the record start signal and the recording dot density designation signal.
Claim 18
Dependent Claim
55 words
A recorder according to claim 13, wherein said record means comprises: laser beam generation means for generating a laser beam; a rotating polygon mirror for scanning the laser beam; and a polygon mirror drive means for controlling the switching of a rotation speed of the polygon mirror in accordance with a set recording dot density.
Claim 19
Dependent Claim
87 words
A recorder comprising: a controller for receiving data from an external data source and for processing the data to generate image data; and a recording unit capable of performing a recording operation at a plurality of recording dot densities said recording unit recording in accordance with the image data from said controller at one of the plurality of recording dot densities; wherein said controller is capable of receiving data sent from the external data source during the switching of the recording dot density of said record unit.
Claim 20
Dependent Claim
87 words
A recorder comprising: a controller for receiving data from an external data source and for processing the data to generate image data; and a recording unit capable of performing a recording operation at a plurality of recording dot densities said recording unit recording in accordance with the image data from said controller at one of the plurality of recording dot densities; wherein said controller is capable of receiving data sent from the external data source during the switching of the recording dot density of said record unit.
Claim 21
Dependent Claim
51 words
A recorder according to claim 15, wherein said recording unit comprises a laser beam generator, a polygon mirror for scanning the laser beam, and a polygon mirror driver for rotating said polygon mirror at a speed which is set relative to a selected one of the plurality of recording dot densities.
Claim 22
Dependent Claim
45 words
A recorder according to claim 15, wherein said controller receives recording dot density information from the external data source and sends a recording density switching command to the recording unit in accordance with the recording density information so as to switch the recording dot density.
Claim 23
Dependent Claim
58 words
A recorder according to claim 17, wherein when said recording unit receives the recording dot density switching command between the reception of a start of a recording command and the end of a recording operation, said recording unit switches the recording dot density in accordance with the recording density switching command after the end of the recording operation.
Claim 24
Dependent Claim
29 words
A recorder according to claim 15, wherein said controller receives character coded data from the external data source and processes the character coded data to generate the image data.
Claim 25
Dependent Claim
121 words
A line recorder comprising: a controller for receiving data from an external data source and for processing the data to generate image data, said controller outputting the image data and a print signal corresponding to a recording operation; a recording unit capable of performing the recording operation at a plurality of recording dot densities, said recording unit recording in accordance with the image data from said controller at a selected one of the plural recording dot densities and outputting a recording period signal during performing the recording operation; and an inhibit controller for inhibiting the switching of the recording dot density on the basis of both the recording period signal from said recording unit and the print signal from said controller.
Claim 26
Dependent Claim
121 words
A line recorder comprising: a controller for receiving data from an external data source and for processing the data to generate image data, said controller outputting the image data and a print signal corresponding to a recording operation; a recording unit capable of performing the recording operation at a plurality of recording dot densities, said recording unit recording in accordance with the image data from said controller at a selected one of the plural recording dot densities and outputting a recording period signal during performing the recording operation; and an inhibit controller for inhibiting the switching of the recording dot density on the basis of both the recording period signal from said recording unit and the print signal from said controller.
Claim 27
Dependent Claim
26 words
A recorder according to claim 20, wherein said inhibit controller comprises an OR gate arranged to input both the print signal and the recording period signal.
Claim 28
Dependent Claim
29 words
A recorder according to claim 20, wherein said controller receives data sent from the external data source during the switching of the recording dot density of said recording unit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |