US 5,515,216 A · Data storage cartridge having a case with recesses accommodating flanges of tape reels and a drive roller

Abstract

The present invention provides a data cartridge having a cartridge case (1) capable of containing either of two kinds of magnetic tapes differing from each other in width. The data cartridge is provided with a pair of guide rollers (8) for guiding a driving belt ((9) for driving a magnetic tape (5). Each guide roller (8) has a crowned working surface (8a) having a maximum portion having a maximum diameter. The maximum portion is dislocated from a position corresponding to the middle between the opposite ends of the guide roller (8) toward one of the opposite ends by a specific distance. Each guide roller (8) is set in a position in which the maximum portion is below the position corresponding to the middle between the opposite ends when the data cartridge is provided with a first magnetic tape (1/4 in. magnetic tape) or in a position in which the maximum portion is above the position corresponding to the middle between the opposite ends when the data cartridge is provided with a second magnetic tape (8 mm magnetic tape) having a width greater than that of the first magnetic tape.

Drawings

Claims1

Dependent claims

A data storage cartridge capable of being provided with a magnetic tape having a width greater than that of a relatively narrower magnetic tape provided in a data storage cartridge of the same overall height, said data storage cartridge comprising:

a base plate and a case body joined to each other to form a cartridge case, said case body having an upper wall and a peripheral wall depending therefrom to said base plate to provide the cartridge case with said overall height, said peripheral wall having substantially parallel portions at front and back sides of said cartridge case;
a pair of tape reels having generally circular flanges and being rotatably mounted in side-by-side relation within said cartridge case with axes of rotation of said reels being situated approximately on a medium of said cartridge case which is parallel to said front and back sides of the latter;
a magnetic tape of said greater width coiled on said reels;
a driving roller having a generally circular upper flange and being rotatably mounted in said cartridge case adjacent said front side at a mid-position relative to said reels;
a pair of guide rollers rotatably mounted in said cartridge case adjacent opposite ends of said back side of the latter;
a driving belt wound around said driving roller and said guide rollers so as to travel along a substantially T-shaped path including portions where said driving belt is pressed into contact with coils of said magnetic tape coiled on the pair of tape reels for driving the tape and rotating the tape reels in response to rotation of said driving roller;
and
wherein said upper wall of the case body has circular recesses in its under surface which at least partly receive the upper flanges of said pair of tape reels and the upper flange of said driving roller, respectively, said recesses having respective diameters slightly greater than the diameters of said flanges of the tape reels and driving roller respectively received therein.

5 more elements

Dependencies are inferred from the claim text.

Description4,162 words

Summary2,388 words

#1. Field of the Invention

#The present invention relates to a data storage cartridge suitable for use as a back-up memory for storing data in a high recording density in, for example, a CPU (central processing unit).

#2. Description of the Related Art

Brief description of the drawings9 figures

#The above and other objects, features and advantages of the present invention will become more apparent from the following description taken in connection with the accompanying drawings, in which:

#FIGS. 1(A) and 1(B) are fragmentary sectional views of an essential portion of a data cartridge according to an embodiment of the present invention, which corresponds to sectional views taken on line A--A in FIG. 4;

#FIG. 2 is a sectional view taken on line B--B in FIG. 4;

Detailed description1,593 words

#Preferred embodiments of the present invention will be described hereinafter with reference to FIGS. 1 to 4, in which parts like or corresponding to those described previously with reference to FIGS. 5 to 9 are denoted by the same reference characters and the description thereof will be omitted to avoid duplication.

#The manner in which a pair of guide rollers 8 are set in the cartridge case of a data cartridge in a first embodiment according to the present invention when using a magnetic tape of a width W.sub.1 of 1/4 in. (1/4 in. magnetic tape) and when using another magnetic tape of a width W.sub.2 of 8 mm (8 mm magnetic tape) will be described with reference to FIGS. 1(B) and 1(A), respectively.

#FIG. 1(A) shows a manner of setting a guide roller 8 in the cartridge case 1 of a data cartridge A provided with a 8 mm magnetic tape 5 having a width W.sub.2 of 8 mm, and FIG. 1(B) shows a manner of setting the guide roller 8 in the cartridge case 1 of a data cartridge B provided with a 1/4 in. magnetic tape 5 having a width W.sub.1 of 1/4 in. In FIGS. 1(A) and 1(B), H.sub.2 is the height of the center line P.sub.2 of the 8 mm magnetic tape 5 of the data cartridge A, and H.sub.1 is the height of the center line P.sub.1 of the 1/4 in. magnetic tape 5 of the data cartridge B, respectively. The data cartridges A and B are provided with tape guides 6 of the same diametric dimensions. Denoted by H.sub.3 is the height of the upper surface of the lower flange 6b, which corresponds to the height of the lower edges of the 8 mm magnetic tape 5 and the 1/4 in. magnetic tape 5. Since the respective heights of the respective upper surfaces of the lower flanges 6b of the tape guides 6 of the data cartridges A and B are the same, H.sub.1 <H.sub.2. Denoted by H.sub.4 is the difference between the heights H.sub.1 and H.sub.2, by C.sub.1 is denoted the distance between the lower surface of the upper flange 6a and the upper surface of the lower flange 6b of the tape guide 6 of the data cartridge B, which corresponds to the width W.sub.1 of the 1/4 in. magnetic tape 5, and by C.sub.2 is denoted the distance between the lower surface of the upper flange 6a and the upper surface of the lower flange 6b of the tape guide 6 of the data cartridge A, which corresponds to the width W.sub.2 of the 8 mm magnetic tape 5.

Facts

Application

08/411,587Filed 29 Mar 1995 · continuation

Priority

JP 4-27931625 Sep 1992

Granted

7 May 1996

Term ended

20 Sep 2013

Estimated · how

Pre-1995 term; greater of 17 years from grant or 20 years from filing when eligible. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification2 codes

G11B 23/08778
Details: driving features, e.g. belt
G11B
Information storage based on relative movement between record carrier and transducer

Data storage cartridge having a case with recesses accommodating flanges of tape reels and a drive roller

Life of this patent

Data storage cartridge having a case with recesses accommodating flanges of tape reels and a drive roller

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims1

Description4,162 words

Drawings

Classification2 codes

Life of this patent

Description4,162 words