EP0199355A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink ribbon cassette and ribbon feed mechanism
Assignee: Canon Inc
•
Filing: 1986-04-24
•
Granted: —
•
Expires: 2006-04-24
Abstract
Abstract There is provided an ink ribbon cassette (1) detachably mounted on a carriage of a recording apparatus, housing an ink ribbon (3) supplied from a casing and taken up therein after passing through a recording section and including first positioning means (7, 11) for positioning the ink ribbon cassette in the first direction when the ink ribbon cassette is mounted on the carriage, and second positioning means (8, 16, 17) for positioning the ink ribbon cassette in the second direction when the ink ribbon cassette is mounted on the carriage, wherein at least one of the first and second positioning means is elastically engaged with positioning means of the carriage, and inclined portions (1a) are formed at ink ribbon exit and entrance portions in the widthwise direction of the ink ribbon, and an ink ribbon feed mechanism (24) including the ink ribbon cassette.
Inventors
- 👤 Masanori Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 18:45
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/20; B41J33/00; B41J33/14; B41J33/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
An ink ribbon cassette, which houses an ink ribbon supplied from a casing and taken up therein after passing through a recording section, and which is detachably mounted on a carriage of a recording apparatus, comprising first positioning means for positioning said ink ribbon cassette in a first direction when said ink ribbon cassette is mounted on said carriage, and second positioning means for positioning said ink ribbon cassette in a second direction when said ink ribbon cassette is mounted on said carriage, wherein at least one of said first and second positioning means is elastically engaged with positioning means of said carriage, and inclined portions are formed at ink-ribbon exit and entrance portions in the widthwise direction of said ink ribbon.
Claim 2
Dependent Claim
122 words
An ink ribbon cassette, which houses an ink ribbon supplied from a casing and taken up therein after passing through a recording section, and which is detachably mounted on a carriage of a recording apparatus, comprising first positioning means for positioning said ink ribbon cassette in a first direction when said ink ribbon cassette is mounted on said carriage, and second positioning means for positioning said ink ribbon cassette in a second direction when said ink ribbon cassette is mounted on said carriage, wherein at least one of said first and second positioning means is elastically engaged with positioning means of said carriage, and inclined portions are formed at ink-ribbon exit and entrance portions in the widthwise direction of said ink ribbon.
Claim 3
Dependent Claim
40 words
A cassette according to claim 1, wherein said first positioning means is an engaging hole engaged with a boss formed on said carriage, and said second positioning means is a rib engaged with an elastic pawl formed on said carriage.
Claim 4
Dependent Claim
40 words
A cassette according to claim 1 or 2, wherein when a tension force applied to said ink ribbon is increased, said ink ribbon is guided to a member having a large radius of curvature, and is bent by said member.
Claim 5
Dependent Claim
20 words
A cassette according to claim 3, wherein said member having the large radius of curvature is said ink-ribbon exit portion.
Claim 6
Dependent Claim
53 words
A cassette according to claim 1, wherein said ink ribbon cassette has a pair of substantially plate-like arms for supporting a back surface of said ink ribbon at the distal end sides of said ink-ribbon exit and entrance portions, and further has a biasing member for supporting said ink ribbon between said arms.
Claim 7
Dependent Claim
141 words
_ 6. An ink ribbon feed mechanism comprising: an ink ribbon cassette, housing an ink ribbon which is exposed by a pair of guide arms, which has a biasing member that absorbs a slackened portion of said ink ribbon to draw it into said ink ribbon cassette and which supports said ink ribbon between said guide arms; holding means for holding said ink ribbon cassette at a predetermined position; and guide means for guiding said ink ribbon exposed outside said ink ribbon cassette, said ink ribbon supported between said guide arms being supplied outside said ink ribbon cassette when said ink ribbon cassette is held by said holding means, and the exposed ink ribbon being taken up again inside said ink ribbon cassette to be supported between said guide arms when said ink ribbon cassette is disengaged from said holding means.
Claim 8
Dependent Claim
141 words
_ 6. An ink ribbon feed mechanism comprising: an ink ribbon cassette, housing an ink ribbon which is exposed by a pair of guide arms, which has a biasing member that absorbs a slackened portion of said ink ribbon to draw it into said ink ribbon cassette and which supports said ink ribbon between said guide arms; holding means for holding said ink ribbon cassette at a predetermined position; and guide means for guiding said ink ribbon exposed outside said ink ribbon cassette, said ink ribbon supported between said guide arms being supplied outside said ink ribbon cassette when said ink ribbon cassette is held by said holding means, and the exposed ink ribbon being taken up again inside said ink ribbon cassette to be supported between said guide arms when said ink ribbon cassette is disengaged from said holding means.
Claim 9
Dependent Claim
58 words
An ink ribbon feed mechanism according to claim 6, wherein said guide means has a function for shifting the exposed ink ribbon in its widthwise direction, and a change in length of the exposed ink ribbon during ribbon shifting is absorbed by said biasing member of said ink ribbon cassette to remove slackening of the exposed ink ribbon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.