US4586054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording head
Assignee: Canon Inc
•
Filing: 1983-04-29
•
Granted: 1986-04-29
•
Expires: 2003-04-29
Abstract
Abstract A recording head for a recording apparatus, which includes a plurality of recording elements, wherein the length or area of at least one dot in the recording elements at a particular position is varied with respect to the length or area of the dots of the remaining recording elements. Preferably, the length or area of the dot of at least one recording element positioned at the outermost end in the linear row of the plurality of recording elements is greater than the length or area of the dots of the remaining recording elements. By such variation in the length or the area of the dots, so-called "whitening" in the recorded image is prevented.
Inventors
- 👤 Kenji Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/345
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A recording head for recording information in a line of predetermined width in one scan of the recording head, comprising: a plurality of first recording elements arranged in a substantially linear row; and two second recording elements, each disposed at an end of said row, for recording in the same line as said first recording elements, wherein the dimension of said second recording elements measured along said row differs from the dimension of each said first recording element measured along said row.
Claim 2
Dependent Claim
82 words
A recording head for recording information in a line of predetermined width in one scan of the recording head, comprising: a plurality of first recording elements arranged in a substantially linear row; and two second recording elements, each disposed at an end of said row, for recording in the same line as said first recording elements, wherein the dimension of said second recording elements measured along said row differs from the dimension of each said first recording element measured along said row.
Claim 3
Dependent Claim
26 words
A recording head according to claim 1, wherein said dimension of said second recording element is greater than said dimension of each said first recording element.
Claim 4
Independent Claim
132 words
A method of recording image data on a recording medium, the method comprising the steps of: moving a recording head and the recording medium relative to each other in a main scanning direction to record a line of the image data, wherein the image data includes a plurality of image elements spanning the line and each of the image elements proximate to a different edge of the line is expanded transverse to the line; transporting the recording head and recording medium relative to each other in a sub-scanning direction by an amount substantially equal to the width of a line of image data that would result if the image elements proximate to the edges of the line were not expanded; and repeating said moving and transporting steps a desired number of times.
Claim 5
Independent Claim
132 words
A method of recording image data on a recording medium, the method comprising the steps of: moving a recording head and the recording medium relative to each other in a main scanning direction to record a line of the image data, wherein the image data includes a plurality of image elements spanning the line and each of the image elements proximate to a different edge of the line is expanded transverse to the line; transporting the recording head and recording medium relative to each other in a sub-scanning direction by an amount substantially equal to the width of a line of image data that would result if the image elements proximate to the edges of the line were not expanded; and repeating said moving and transporting steps a desired number of times.
Claim 6
Dependent Claim
40 words
A method according to claim 3, wherein the recording head includes a row of recording elements and at least one of said recording elements at an end of said row is larger than each of the other said recording elements.
Claim 7
Dependent Claim
33 words
A method according to claim 4, wherein said recording elements at both ends of said row are longer in length, as measured along the row, than each of the remaining said recording elements.
References Cited (Backward Citations)
US4251822A
Cited
US4491853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |